IHC Integrated Monitoring and Control System FS 8064

IHC SYSTEMS B.V. Reference : 801607.FSS.MRE.0003 Version : 1.3 Status : For Approval

© 2008 IHC SYSTEMS B.V. All rights reserved. The contents of this document are the property of IHC SYSTEMS B.V. and may neither be brought to the knowledge of third parties in original form nor by reproduction of parts or whole document.

Specification Integrated Monitoring and Control System

Cutters JDN 8064/8065/8066/8067

IHC SYSTEMS B.V. Sliedrecht – the Netherlands Industrieweg 30 – 3361 HJ Sliedrecht P.O. Box 41 - 3360 AA Sliedrecht The Netherlands Tel.: (++31) (0) 184 431 922 Fax : (++31) (0) 184 431 505 E-mail: [email protected] Internet: www.ihcsystems.com


© 2008 IHC SYSTEMS B.V. All rights reserved. Page 2 of 87

This document Document Information Title Specification Subject Integrated Monitoring and Control System Reference 801607.FSS.MRE.0003 Version 1.3 Date 10 Oct 2008 Number of pages 87 File name FS 8064.doc Author mreuvers Project Cutters JDN 8064/8065/8066/8067 Project number 801.607/801.608 Yard number 8064 / 8065 / 8066 / 8067 Vessel Ibn Battuta / Zheng He / Fernão de Magalhães /JDN8067 Owner Jan de Nul Document history Version Date Status Description 1.0 18-Sep-07 For Approval First issue 1.1 6-Dec-07 For Approval Remarks owner and hydr spec added 1.2 23-Apr-08 For Approval Remarks owner and hydr spec added 1.3 10-Oct-08 For Approval Updated Approval Name Role Date Signature M. Reuvers Author 10-Oct-08 MRE

Quality Control

M. v.d. Sluijs Approval 23-Apr-08

Customer



References Document Supplier Reference Version [1] Network drawing IHC Systems BV D0031960 A [2] IMC Soft IO List IHC Systems BV 1.20 [3] IMC IO List IHC Systems BV 1.20 [4] Technical specification electric

control system IHC Hytop BV HY46770-010 H

[5] Product specifications DPM & ACC

IHC Systems BV DPM/ACC 2.0

Definitions and abbreviations Term Description HMI Human Machine Interface DTPS Dredge Track Presentation System DPM Dredge Profile Monitor ACC Automatic Cutter Control CSD Cutter Suction Dredger. The vessel. DP Dredge Pump DCD Dredge Control Desk EOC End Of Cut EOCLT End Of Cut Layer Thickness EOS End Of Swing DA Density Advice value AC Alternating Current AI Analogue Input AO Analogue Output CT Constant Tensioning DAL Distance Along Line DOL Distance Off Line DC Direct Current IO Input Output PID Proportional Integration Differential PS Port Side SB Star Board side RFU Ready For Use (signal) SCADA Supervising Control And Data Acquisition system (a HMI interface) PLC Process Logic Controller SSI Synchronous Serial Interface protocol



Table of contents

1. INTRODUCTION............................................................................................................................................... 7

1.1 PURPOSE OF THIS DOCUMENT......................................................................................................................... 7 1.2 CONDITION TABLES........................................................................................................................................ 7

2. FUNCTIONAL SPECIFICATION ................................................................................................................... 8

2.1 MAIN CONTROL CONCEPTS............................................................................................................................. 8 2.2 OPTIONS.........................................................................................................................................................8 2.3 REQUIRED STATES AND MODES...................................................................................................................... 8 2.4 CONTROL & MONITORING.............................................................................................................................. 8

2.4.1 Hydraulic system................................................................................................................................... 8 2.4.1.1 Booster hydraulic pumps ....................................................................................................................................9 2.4.1.2 Main hydraulic pumps........................................................................................................................................9 2.4.1.3 Auxiliary hydraulic pumps ...............................................................................................................................10 2.4.1.4 Restart after black out.......................................................................................................................................11 2.4.1.5 Emergency hydraulic pump..............................................................................................................................11 2.4.1.6 Hydraulic cooling pumps..................................................................................................................................11 2.4.1.7 Emergency close hull inlet valves ....................................................................................................................11 2.4.1.8 Alarms ..............................................................................................................................................................12

2.4.2 Cutter .................................................................................................................................................. 12 2.4.2.1 Cutter drive.......................................................................................................................................................12 2.4.2.2 Normal speed control........................................................................................................................................14 2.4.2.3 Slow turning mode selection ............................................................................................................................15 2.4.2.4 Slow turning from the bridge............................................................................................................................15 2.4.2.5 Slow turning locally..........................................................................................................................................16 2.4.2.6 Slow turning robot............................................................................................................................................19 2.4.2.7 Cutter loosing device ........................................................................................................................................20 2.4.2.8 Cutter ‘Palco’ measurement .............................................................................................................................20 2.4.2.9 Cutter bearing flushing system .........................................................................................................................20

2.4.3 Ladder ................................................................................................................................................. 24 2.4.3.1 Ladder winch drives .........................................................................................................................................24 2.4.3.2 Ladder securing cylinders.................................................................................................................................26 2.4.3.3 Trunnion and tilting shaft cylinders..................................................................................................................27 2.4.3.4 Ladder wire tension cylinders...........................................................................................................................28

2.4.4 Side winches ........................................................................................................................................ 29 2.4.4.1 Side winch drives .............................................................................................................................................29 2.4.4.2 Spooling device ................................................................................................................................................32

2.4.5 Spud carrier system............................................................................................................................. 33 2.4.5.1 Spud carrier ......................................................................................................................................................33 2.4.5.2 Spud carrier buffer............................................................................................................................................36

2.4.6 Spud handling...................................................................................................................................... 36 2.4.6.1 Local control panel spud tilting ........................................................................................................................36 2.4.6.2 Spud hoisting winch .........................................................................................................................................36 2.4.6.3 Spud emergency hoisting..................................................................................................................................39 2.4.6.4 Spud locking cylinders .....................................................................................................................................40 2.4.6.5 Spud guide locking cylinders............................................................................................................................40 2.4.6.6 Spud tilting cylinders........................................................................................................................................41 2.4.6.7 Spud hoisting tension cylinders ........................................................................................................................42 2.4.6.8 Spud shifting winches.......................................................................................................................................43

2.4.7 Barge loading installation................................................................................................................... 44 2.4.7.1 Control position barge loading arms.................................................................................................................44 2.4.7.2 Gantry and hinge ..............................................................................................................................................45 2.4.7.3 Launder pipe valves and flaps ..........................................................................................................................45 2.4.7.4 Mooring winches ..............................................................................................................................................45

2.4.8 Anchor booms...................................................................................................................................... 47 2.4.8.1 Guy rope winches .............................................................................................................................................47 2.4.8.2 Anchor winches ................................................................................................................................................48

2.4.9 Dredge pumps ..................................................................................................................................... 50 2.4.9.1 Dredge slice valves...........................................................................................................................................50 2.4.9.2 Dredge pump drives..........................................................................................................................................50



2.4.9.3 Gland system ....................................................................................................................................................54 2.4.9.4 Dredge valves flushing system .........................................................................................................................56 2.4.9.5 Production measuring.......................................................................................................................................57 2.4.9.6 Discharge pipeline............................................................................................................................................58 2.4.9.7 Vacuum relief valve..........................................................................................................................................58

2.5 DREDGE PROFILE MONITOR (DPM)............................................................................................................. 60 2.5.1 Sensors ................................................................................................................................................ 60

2.5.1.1 Ladder angle .....................................................................................................................................................60 2.5.1.2 Draught, Trim and List .....................................................................................................................................60 2.5.1.3 Tide correction..................................................................................................................................................61 2.5.1.4 Gyro..................................................................................................................................................................61 2.5.1.5 (D)GPS.............................................................................................................................................................61

2.5.2 Geometry settings and options ............................................................................................................ 61 2.5.3 Anchor positioning settings and options ............................................................................................. 62 2.5.4 Cutter selection ................................................................................................................................... 63

2.6 AUTOMATIC CUTTER CONTROL (ACC) ....................................................................................................... 64 2.6.1 Product options ................................................................................................................................... 64 2.6.2 Control settings and options ............................................................................................................... 65

2.7 HUMAN MACHINE INTERFACE (HMI) .......................................................................................................... 66 2.7.1 Control panels..................................................................................................................................... 66 2.7.2 Operator stations ................................................................................................................................ 66

2.7.2.1 Locations ..........................................................................................................................................................66 2.7.2.2 Dedicated operator keyboard............................................................................................................................66 2.7.2.3 Accounts...........................................................................................................................................................66

2.7.3 Menu structure .................................................................................................................................... 67 2.7.4 Colour Definitions............................................................................................................................... 67

2.7.4.1 Dredge valves and Jet valves with limit switches.............................................................................................67 2.7.4.2 Valves with analogue position indication .........................................................................................................68 2.7.4.3 Manual controlled valves..................................................................................................................................68 2.7.4.4 Hydraulic, Gland, Flushing and dredge pumps.................................................................................................68 2.7.4.5 Other symbols...................................................................................................................................................69 2.7.4.6 Bar graphs.........................................................................................................................................................69 2.7.4.7 Function keys ...................................................................................................................................................70 2.7.4.8 Text...................................................................................................................................................................70 2.7.4.9 Setpoints ...........................................................................................................................................................70 2.7.4.10 Variables ......................................................................................................................................................70 2.7.4.11 Object status.................................................................................................................................................70 2.7.4.12 Manual control of objects.............................................................................................................................70

2.7.5 Pages................................................................................................................................................... 73 2.7.5.1 Index graphics ..................................................................................................................................................74 2.7.5.2 Process graphics ...............................................................................................................................................74 2.7.5.3 Diagnostic graphics ..........................................................................................................................................74 2.7.5.4 Settings graphics...............................................................................................................................................75 2.7.5.5 Alarm graphics .................................................................................................................................................75

2.7.6 AMCS Alarm handling ........................................................................................................................ 75 2.8 DREDGE DATABASES.................................................................................................................................... 75

2.8.1 Default data tables .............................................................................................................................. 76 2.8.2 User defined data tables...................................................................................................................... 76 2.8.3 Reporting............................................................................................................................................. 76

2.9 INFRASTRUCTURE........................................................................................................................................ 76 2.9.1 PLC network........................................................................................................................................ 76 2.9.2 Computer network ............................................................................................................................... 77 2.9.3 Connections......................................................................................................................................... 77 2.9.4 Cabling................................................................................................................................................ 77

2.10 EXTERNAL INTERFACE REQUIREMENTS........................................................................................................ 77 2.10.1 Interfacing with Alarm Monitoring System (AMS).............................................................................. 77 2.10.2 Interfacing with Spud carrier .............................................................................................................. 78 2.10.3 Interfacing with gyro........................................................................................................................... 78 2.10.4 Interfacing with (D)GPS ..................................................................................................................... 78 2.10.5 Interfacing with survey system ............................................................................................................ 78



2.10.6 Interfacing with owner supply dredge supervisory system.................................................................. 82 2.10.7 Interfacing with field ........................................................................................................................... 82

2.10.7.1 Galvanic isolation ........................................................................................................................................82 2.10.7.2 IMC stop ......................................................................................................................................................84 2.10.7.3 Emergency close dredge valves ...................................................................................................................84 2.10.7.4 Emergency stop logic...................................................................................................................................84

2.11 INTERNAL INTERFACE REQUIREMENTS......................................................................................................... 84 2.12 SYSTEM QUALITY FACTORS (NON-FUNCTIONAL REQUIREMENTS) ................................................................ 84

2.12.1 Performance........................................................................................................................................ 84 2.12.2 Reliability ............................................................................................................................................ 84 2.12.3 Maintainability .................................................................................................................................... 84 2.12.4 Availability .......................................................................................................................................... 85 2.12.5 Safety................................................................................................................................................... 85

2.13 OTHER REQUIREMENTS AND CONSTRAINTS.................................................................................................. 85 2.13.1 Design and construction constraints ................................................................................................... 85 2.13.2 Personnel related requirements .......................................................................................................... 85 2.13.3 Training and instruction related requirements ................................................................................... 85 2.13.4 Logistics related requirements ............................................................................................................ 85 2.13.5 Packaging requirements...................................................................................................................... 85

3. QUALIFICATION PROVISIONS.................................................................................................................. 86

4. SCOPE OF DELIVERY................................................................................................................................... 86

ATTACHMENT A.................................................................................................................................................... 87



1.Introduction

1.1Purpose of this document The purpose of this document is to describe the functional specifications of the Integrated Monitoring and Control System (IMC) for the Cutters JDN 8064/8065/8066/8067. This functional specification is the basis for the technical design, implementation and configuration of the IMC System.

1.2Condition tables A condition table used in this document has the following conventions:

- The ‘Start’ column indicate that the function is a start condition only, The ‘Run’ column indicate that the condition is active at run time and the centre column indicates that the condition is a start and running condition as well:

� ‘X’ stands for condition programmed in IMC system. � ‘A’ stands for condition programmed in AMS system. In case of a link failure between

AMS and IMC system these conditions are ignored by the IMC system (still handled by the AMS system) and will colour purple on the SCADA condition pages (unknown state).

- Conditions not separated with a line are OR functions and separated are AND functions. - Overrule column indicate if the condition can be overruled:

� ‘D’ stands for operational at the bridge. � ‘E’ stands for operational from the ECR. � ‘X’ stands for operational from the bridge and ECR. � ‘A’ stands for operational from AMS system and is implemented in IMC system for

indication only.

conditions … Start Run Overrule - Condition … - Condition …

X X X

- Condition … X



2.Functional specification

2.1Main control concepts The Cutters JDN 8064/8065/8066/8067 includes the following basic functionality:

1. Monitor and Control functions. 2. Dredge Profile Monitor. 3. Automatic Cutter Control.

2.2Options Not applicable.

2.3Required states and modes Generally three levels of modes can be distinguished for equipment control:

1. Local control. In this situation the equipment is controlled manually mostly hardwired. There is no possibility for the IMC system to interfere. The input data will be displayed and handled to present the actual process situations as close as possible.

2. Manual control: In this situation the equipment is controlled by the IMC system on direct command of the operator from the dredging desk or SCADA interface.

3. Automatic control: In automatic mode the equipment will be Start / stop controlled and/or regulated based on process parameters and sequences.

2.4Control & monitoring This chapter describes the individually control, interlocking and alarms of the equipment. 2.4.1Hydraulic system The hydraulic system is based on a constant pressure system of 320 bar. When a pump is running for a few seconds, the pump will be pressurized by energizing the pressure solenoid. The following pumps are controlled by the IMC system: - Main pumps sets (M0.1 / M0.2 / M0.3). Every set consists of two hydraulic pumps with a

corresponding safety solenoid driven by one e-motor. - Auxiliary pumps (M0.4 / M0.5). - Cooling pumps (M0.7 / M0.8). - Booster pumps (M0.11 / M0.12).

Consumers:

1. Spud carrier cylinder (via serial link with spud carrier controller). 2. Barge loading gantry cylinders. 3. Barge loading hinge cylinders. 4. Barge loading launder valve cylinders. 5. Spuds locking. 6. Emergency spud hoisting cylinders (not controlled by IMC). 7. Spud carrier buffer cylinders 8. Spud tilting cylinders. 9. Spud guide locking cylinders. 10. Ladder turning point cylinders. 11. Ladder tilting point cylinders. 12. Ladder locking point cylinders.



13. Cutter platform lifting cylinders (not controlled by IMC). 14. Cutter platform locking cylinders (not controlled by IMC). 15. Cutter head loosening device cylinder. 16. Cutter manipulator cylinder (not controlled by IMC). 17. Anchor foundation cylinders (not controlled by IMC). 18. Ladder hoisting tension cylinders. 19. Spud hoisting tension cylinders. 20. Slice valves. 21. Butterfly valves. 22. Anchor hoisting winches. 23. Anchor boom guy rope winches. 24. Barge mooring winches. 25. Spud hoisting winches. 26. Spud shifting winches. 27. Windlasses (not controlled by IMC). 28. Spooling device side wire winches. 29. Spooling device lifting side wire winches.

2.4.1.1Booster hydraulic pumps The hydraulic main pumps can be controlled from the following control positions only: - Start / stop control on the Bridge SCADA view stations on ‘hydraulic system’ screens. - Start / stop control on the ECR SCADA view stations on ‘hydraulic system’ screens.

conditions main hydraulic pump Start Run Overrule

- Pump IMC selected X - Pump Ready for use X - No EM stop hydraulic pumps Bridge active X - No EM stop hydraulic pumps Local active X - Hydraulic Emergency pump not running X - No low-low level main tank (2 sec delayed) A - No high-high oil temperature main tank A Manual control: Manual pump start / stop control is available by clicking on the pump symbol on the SCADA interface. A detail popup screen appears and provides function keys to start and stop the pump. Automatic control: The booster pumps are triggered to start on execution of the function key sequences of the main pumps. The booster pumps will be stopped automatically after a post running time when all three main pumps are stopped. The post running time settings is adjustable on the SCADA interface 2.4.1.2Main hydraulic pumps The hydraulic main pumps can be controlled from the following control positions only: - Start / stop control on the Bridge SCADA view stations on ‘hydraulic system’ screens. - Start / stop control on the ECR SCADA view stations on ‘hydraulic system’ screens.

conditions main hydraulic pump Start Run Overrule

- Pump IMC selected X - Pump Ready for use X - Both booster pumps are running - One booster and one or less main pumps are running (see note

1)

X X X

- Return pressure > 1 bar X - Return pressure < 0.5 bar for more than 5 seconds (see note 2) X - Two boosters or two or less main pumps are running (M0.3 only) (see

note 1) X



- At least one booster pump is running (see note 1) X - Isolating switch in normal position X - No EM stop hydraulic pumps Bridge active X - No EM stop hydraulic pumps Local active X - Hydraulic Emergency pump not running X - No low-low level main tank (2 sec delayed) A - No high-high oil temperature main tank A - No high-high temperature motor windings A Notes:

1. Maximum two main pumps may run in case only one booster pump is running. Main pump M0.3 will be stopped at default when only one booster pump is running.

2. The pressure solenoids are deactivated immediately when, during running of the main pumps, the return pressure (PT0.2) drops below 0.5 bar. In case the pressure does not increase again above the 1 bar, the main pumps will be stopped. In case it does, the pressure solenoids are activated again after a small delay.

Individual start /stop: Manual pump start / stop control is available by clicking on the pump symbol on the SCADA interface. A detail popup screen appears and provides function keys to start and stop the pump. Function key control: Start / stop control via function keys on the SCADA screens (header: ‘Main pumps’; F-keys: ‘EM1’, ‘EM2’, ‘EM3’, ‘All’, ‘Stop’). An ‘EMx’ function key first starts both booster pumps and secondly executes an individual start as mentioned above when both booster pumps are running and the return pressure is high enough for a few seconds. The function key blinks during starting of the pump and colours continue on a running feedback signal. The key colours red on a start-up timeout or unexpected stop of the pump. The ‘All’ function key provides a group start command for the three main pumps. First again the booster pumps are started and secondly the main pumps a few seconds behind each other to prevent overloading. The key is blinking during the execution of the sequence and colours continue is the running feedback signals of all three pumps are active. The ‘Stop’ function key stops all three pumps at the same time. The key colours continue if all three pumps are stopped. The booster pumps will stop after the post running timer of that pump has elapsed. 2.4.1.3Auxiliary hydraulic pumps The hydraulic aux pumps can be controlled from the following control positions only: - Start / stop control on the Bridge SCADA view stations on ‘hydraulic system’ screens. - Start / stop control on the ECR SCADA view stations on ‘hydraulic system’ screens.

conditions aux hydraulic pump Start Run Overrule

- Pump IMC selected X - Pump Ready for use X - No EM stop hydraulic pumps Bridge active X - No EM stop hydraulic pumps Local active X - Hydraulic Emergency pump not running X - No low-low level main tank (2 sec delayed) A - No high-high oil temperature main tank A Manual pump start / stop control is available by clicking on the pump symbol on the SCADA interface. A detail popup screen appears and provides function keys to start and stop the pump. Function key control:



Start / stop control via function keys on the SCADA screens (header: ‘Aux pump x’; F-keys: ‘Start’, ‘Stop’). The pressed function key blinks during starting and colours continue on a running feedback signal. The key colours red on a start-up timeout or unexpected stop of the pump. The ‘Stop’ function key stops the pump. The key colours continue when the pump has stopped. 2.4.1.4Restart after black out A restart after black-out function is implemented for the main- and auxiliary hydraulic pumps. If a pump has an unexpected stop and the power management system signals a black-out within 5 seconds, the pump will be set available for restart. The IMC system will restart the pumps if the black-out detection is removed. The main pumps will always be restarted a few seconds after each other.

� PMS blackout detection MSB PS restarts M0.3. � PMS blackout detection MSB SB restarts M0.1 and M0.2. � PMS blackout detection ASB PS restarts M0.5. � PMS blackout detection ASB SB restarts M0.4.

2.4.1.5Emergency hydraulic pump The pump is start / stop controlled with a buttons on the dredging control desk directly hardwired to the motor starter. If the emergency hydraulic pump is started, the main- and auxiliary pumps will be stopped. The following conditions are hardwired to the motor starter. The IMC system displays them only for diagnostic purposes only.

conditions emergency hydraulic pump Start Run Over rule - Pump Ready for use X - No EM stop hydraulic pumps Bridge active X - No EM stop hydraulic pumps Local active X 2.4.1.6Hydraulic cooling pumps The hydraulic cooling pumps can be controlled from the following control positions only: - Start / stop control on the Bridge SCADA view stations on ‘hydraulic system’ screens.

A cooling pump is provided to cool or heat the hydraulic oil in the system. The cooling pump can either be controlled in manual and automatic mode. Selection ‘Auto’ / ‘Manual’ with function keys on the SCADA system. Selection is unconditional.

conditions hydraulic cooling pump Start Run Overru le - Pump IMC selected X - Pump Ready for use X - No EM stop hydraulic pumps Bridge active X - No EM stop hydraulic pumps Local active X - No low-low level main tank (2 sec delayed) A Manual control: Manual pump start / stop control is available by clicking on the pump symbol on the SCADA interface. A detail popup screen appears and provides function keys to start and stop the pump. Automatic control: The pump is start / stop controlled based on the oil temperature in the main tank when the automatic mode is selected. The pump starts on high temperature (>40 °C) and stops after a post running time when the switch is deactivated. The temperature threshold value and the post running time settings are adjustable on the SCADA interface. 2.4.1.7Emergency close hull inlet valves The dredging desk is provided with an emergency close button for the inlet sluice valves (Suction inlet valve upper and lower trunnion and the bypass valve).



The emergency close functions are hardwired relay logic which disconnect the PLC outputs to the valve open / close solenoids and energizes the accumulator release solenoid to close the valve. The valve work switch is also hardwired in the solenoid lines. In case this switch is not in working position the open/close and the emergency close solenoids are blocked of that particular valve and not the others. 2.4.1.8Alarms IMC system sends raw data and pump states via a communication link to the AMS system (see soft IO list AMCS [2]). These alarms are presented on the AMS system. IMC provides alarms for fast diagnostic to the operator. The following alarms will be implemented in the IMC system:

- Low-low level alarm. Alarm and interlocks are 2 sec delayed. Alarm is generated by AMS system. - Low level pre-warning alarm. Alarm is generated by AMS system. - High-high temperature alarm hydraulic oil. Alarm is generated by AMS system. - Motor winding temperature too high alarm. Alarm is generated by AMS system. - Pump running alarm. Generated on a running feedback failure or unexpected stop of the pump. - Low-low oil pressure emergency close valves alarm of each accumulator.

2.4.2Cutter The cutter can be controlled from the following positions: - Remote from wheelhouse (DCD desk) for normal operation - Local at cutter platform for maintenance purposes 2.4.2.1Cutter drive The ER auxiliaries like lubrications, drive auxiliaries like cooling fans and the frequency converter powering up are controlled by the AMS system. These systems are started or stopped from the IMC system by a single command. The AMS system is responsible for the start or stop order.

2.4.2.1.1Cutter motor selections The cutter drive motors for operation are selected on the AMS system. The drive will respond with ‘cutter mode PS/SB selected’ the IMC system. Depending of those two feedback signals the IMC system selects which motor to use and informs the clutch cabinet as well. Selection changes are only possible in the IMC system when the cutter is not in operation.

2.4.2.1.2Cutter drives start / stop control The cutter drives are start / stop controlled via function keys on the SCADA view stations (F-keys: ‘Start’, ‘Stop’). The activated function key will blink during the start / stop execution or colours continue when the running / stopped status is reached. The running or stopped states is determined out of the drive feedback running signals, the currently selected motors and the clutch engaged / disengaged feedback signals. In case of a start failure or unexpected stop the cutter motors ‘Start’ function key colours red.

conditions cutter drive xx Start Run Overrule - Cutter drive xx ER system Ready for use - Cutter drive xx ER system Running

X X X A

- Cutter drive xx ER system No critical failure X - Cutter bearings flushing system ready for use (see note 1) X - Cutter bearings no low pressure shut down alarm X D - Cutter bearings no low flow shut down alarm X D - Cutter loosening device retracted - Slow turning selected

X X

X D

- Cutter drive xx not in propulsion mode X - Cutter drive xx Isolating switch transformer room in normal position A - Cutter drive xx Isolating switch ladder machinery in normal position A - Cutter drive Isolating switch cutter platform normal position X - Cutter drive No EM stop Bridge A



- Cutter drive No EM stop ECR active A - Cutter drive No EM stop cutter platform A - Cutter drive xx No EM stop ladder machinery active A - Cutter drive xx No EM stop on ABB drive panel active A - Cutter drive xx No EM stop on drive control panel active A

conditions clutch e-motor xx Start Run Overrule - Clutch cabinet IMC selected X - Clutch engaging conditions ok (see note 2) X - Clutches interlocked X - Clutches interlocked one motor operation X - No clutch emergency stop activated X - Cutter drive selected from clutch cabinet X - Drive motor speed about 0 rpm X - Palco cutter shaft speed about 0 rpm X Notes:

1. The cutter bearing flushing system is ‘Ready for use’ when: � OR the conditions of one of the flushing pumps are normal (see 2.4.2.9) AND the flushing

system is automatic selected. � OR one of the pumps running AND the flow and pressure is sufficient.

2. All condition signals like the clutch alarm and conditions signals are assumed to be combined in the ‘Ready for use’ signal. These signals are for diagnostic purposes and alarms only.

Actions during start-up and running:

1. All sub systems and the drives it self are started at the same time. Only the clutches will stay disengaged. The following systems are started: � The cutter bearing flushing system. � The cutter drive ER auxiliary systems. � The selected frequency converters are started. With this start command the drive auxiliaries

will be started and after that the frequency drive should start up until it is completely powered. Only the thyristor-bridge must stay disabled until the ‘zero controller’ output to the drive is deactivated. The drive should response with a started feedback in this situation.

2. When all systems are running the start function key will colour yellow. If one of the systems fails to start, the start-up will be interrupted and a time out alarm generated. Some sub system running signals: � The cutter bearing flushing system ‘Running’ feedback is active when:

− AND the one of the pumps is running. − AND the flow and pressure are sufficient (>= … m3/h, >= … bar).

3. The clutches of the selected drives will be engaged when the operator turns the speed knob on

the dredging desk. After the clutch engaged signal is active the drives will be enabled to run by deactivating the ‘zero controller’ output to the drive and increase the analogue speed setpoint on request of the operator. The start function key is now green coloured. The ‘Palco’ torque measuring on the cutter shaft for instance can disengage the clutches in case of a torque overload. In case a clutch of one of the selected motors is not engaged during running (speed release conditions failed), the IMC system goes back to situation 2 and response with a 0% speed setpoint to the drives and ‘zero controller’ output will be activated. The function key colours yellow again. The clutches can be engaged again when the cutter motor speed(s) and the ‘Palco’ shaft speed are nearly 0 rpm and cutter speed controller on the dredging desk is turning to the right. The speed setpoint will be increased starting from 0 rpm when the clutches are engaged.

Actions during stopping:



1. The speed controller will be disabled, the drive setpoints are set to 0% and frequency drive(s) will be stopped. The drive should ramp down and power down. In this last situation the running feedback must be deactivated.

2. The clutch(es) will be disengaged. 3. The start request to all external auxiliary system will be removed after deactivation of the drive

running feedback. Every auxiliary system will execute its stop procedure after its own stopping delay.

Output signals: - The E-motor running output to the clutch cabinet becomes active when the start command to the

drive is active or the drive running feedback is active. - The one motor operation output to the clutch cabinet becomes active when the motor is not selected

and one of the cutter drives powered up or during start-up execution. - Controller zero output to the drive is active when:

� When the speed control is not enabled (see 2.4.2.2). � When the setpoint to the drive is about 0 rpm.

2.4.2.1.3Cutter drive used for propulsion In case the cutter drive is used for propulsion, the indications on the SCADA screens for this cutter drive have no meaning.

2.4.2.1.4Alarms The following alarms will be implemented in the IMC system:

- Cutter motor running failure alarm. Generated on a running feedback time out or unexpected stop of the motor.

- Clutch failure alarm. Generated on a running time out. - ECR auxiliary system failure alarm. Generated when the system time out or unexpected stop of

the system. - Cutter bearing flushing system failure alarm. Generated when the system fails to start or when

flow or pressure stays below the start up threshold value. - Cutter bearing flushing flow alarm low. Generated when the cutter is started and the flow is less

than a minimum threshold value (… m3/h). - Cutter bearing flushing pressure alarm low. Generated when the cutter is started and the

pressure is less than a minimum threshold value (… bar). A time out stop alarm stays active until the next start attempt. IMC system sends the clutch alarms via a communication link to the ECR alarm system (see soft IO alarm list [2]). 2.4.2.2Normal speed control

The cutter speed can be manual controlled with a pulse encoder speed controller on the dredging desk. If the speed controller is not released the manual speed setpoint will be kept at minimum (0%) speed. If the



controller is enabled, the manual setpoint will be increased or decreased with a predefined speed step on every click of the speed controller.

conditions cutter speed enable Start Run Overrule - Cutter drive selected motors not turning service X - Clutches selected motors engaged X - Clutches cutter drive selected X - Slow turning mode not initiated or selected X - Selected drives running feedback active X The manual speed setpoint will be kept equal to the Cutter Speed Controller output in automatic mode. This method guaranties bump less transfer between manual and automatic mode. The control will be degenerated to manual if the manual controller is operated. The automatic mode must be selected with a toggle function key on the SCADA interface (F-key: ‘Auto’). In automatic mode the speed will be regulated by the Cutter Speed Controller which is implemented in the Automatic Cutter Control (see paragraph 2.6).

conditions cutter auto control Start Run Overrule - Communication with ACC controller healthy X - Cutter speed control released X - Cutter speed measurement healthy X - Cutter torque measurement healthy X In case a ‘Quick speed reduce’ button on the keyboard is pressed the control down grades to manual and the speed setpoint will be set to 20% of the nominal motor speed. After this action the speed can be increased again with the manual speed controller or activate the automatic mode again. The ‘Quick reduce’ command to the drive stays active until the speed is reached the 20% or after a maximum time out. 2.4.2.3Slow turning mode selection The slow turning mode must be selected with function keys on the SCADA interface of the IMC system and have the following possibilities: - Slow turning from the bridge (Fkey: ‘DCD’). Pressing the function key starts a procedure as described

in 2.4.2.4. - Slow turning locally on the cutter platform (Fkey: ‘Local’). Pressing the function key starts a procedure

as described in 2.4.2.5. - Slow turning controlled from robot interface (Fkey: ‘Robot’). Pressing the function key starts a

procedure as described in 0. In case none of these functions are selected the normal speed mode is active. 2.4.2.4Slow turning from the bridge The slow turning DCD mode will be initiated by pressing the ‘DCD’ turning selection function key. During the preparation of the mode the function key will blink and after the procedure has finished and the slow turning mode DCD is enabled the function key colours green.

conditions slow turning DCD mode selection Start R un Overrule - One of the cutter drives started (running feedback active) X - Motor speed of the drives about 0 rpm X - Cutter speed < 5 rpm X Default the PS dive will be used for slow turning. Pressing the bridge turning mode selection function key start the following procedure: In case PS drive is started:



1. The turning gear and SB motor clutch are disengaged and the PS clutch is engaged. 2. The turning mode PS to the clutch cabinet will be activated.

In case PS drive was not started:

1. The turning gear and PS motor clutch are disengaged and the SB clutch is engaged. 2. The turning mode SB to the clutch cabinet will be activated.

conditions slow turning DCD mode enabled Start Run Overrule

- Drive PS running X - Drive PS in turning mode X - Clutch PS engaged X - Clutch SB disengaged X - Turning device clutch disengaged X

OR - Drive PS not running X - Drive SB running X - Drive SB in turning mode X - Clutch SB engaged X - Clutch PS disengaged X - Turning device clutch disengaged X The cutter can be turned when the slow turning DCD mode is enabled. The following function keys are available for bridge turning:

− Left, pre-selection turning to the left − Right, pre-selection turning to the right. − Knock off, pre-selection turning for knock off operation.

When Left or Right is selected the operator can turn the cutter by turning the manual speed controller on the drive to the right (increasing speed). The IMC system sends the corresponding command left/right to the drive en increases the speed setpoint until maximum turning limit. Turning the speed controller to the left stops turning by reset the command. When knock off is selected the operator can turn the cutter by turning the manual speed controller on the drive to the right (increasing speed). The command will be reset automatically after a predefined time (e.g. 15 sec). 2.4.2.5Slow turning locally The slow turning Local mode will be initiated by pressing the ‘LOCAL’ turning selection function key. If selected the function key will colour immediately green.

conditions slow turning local mode selection Start Run Overrule - One of the cutter drives started (running feedback active) X - Motor speed of the drives about 0 rpm X - Cutter speed < 5 rpm X

OR - Starter turning device RFU X - Flushing system running (see …) X - Lubr. Oil system ER cutter running X - Coupling condition turning device RFU X After slow turning locally is selected the operator must select the turning drive and mode to use. The following selections are available: - Slow turning with turning gear motor (Fkey: ‘TG’). Selection is possible when local slow turning is

selected.



- Slow turning with drives (Fkey: ‘Drive’). Selection is possible when local slow turning is selected and one of the drives is started.

- Knock off mode (Fkey: ‘Knock Off’). Selection is possible when local slow turning is selected and one of the drives is started.

The selection will be reset if the local slow turning mode is not selected.

2.4.2.5.1Local control panel cutter platform The cutter head can be controlled locally with a Local Operating Panel (LOP). Functionality’s on LOP: - Torn cutter head with turning device - Torn cutter head with cutter drive E-motors - Operation of loosening pin (see 2.4.2.7) The following control components on LOP are provided: - Selection switch (S1) <0>,<Turning device>,<Freq. Drive>, <Robot> - Selection switch (S2) <Turning>, <Knock Off>. - Pushbutton emergency stop. - Pushbuttons turning ‘Left’, ‘Right’ and ‘Knock off‘. - Signal lamp turning device ‘Ready for use/Enabled’

� Blinking : Local control and ‘TG’ selected on SCADA system (turning device enabled) � Steady : Turning device conditions fulfilled and section switches on ‘Turning device’ (S1) and ‘Turning’ (S2).

- Signal lamp frequency drive ‘Ready for use/Enabled’ � Blinking : Local control and ‘Drive’ selected on SCADA system (drive enabled) � Steady : Drive enabled and section switches on ‘Drive’ (S1) and ‘Turning’ (S2).

- Signal lamp knock off mode ‘Ready for use/Enabled’ � Blinking : Local control and ‘Knock-off’’ selected on SCADA system (drive enabled) � Steady : Drive enabled and section switches on ‘Drive’ (S1) and ‘Knock-off’ (S2).

- Signal lamp robot mode ‘Ready for use/Enabled’ � Blinking : ‘Robot’ selected on SCADA system (see 2.4.2.6) � Steady : Drive enabled and section switches on ‘Robot’ (S1) and ‘Turning’ (S2).

- Pushbuttons loosening pin ‘In’ (S3) and ‘Out’ (S4). - Signal lamp Loosening device ‘Ready for use’

� Blinking : Local control selected on SCADA system. � Steady : Loosening device conditions fulfilled.

- Signal lamp Loosening device in � Steady : When loosening device is completely retracted (limit switch active).

The local slow turning mode can be selected with function keys on the SCADA system (Header: ‘Local Slow turning’; F-keys: ‘TG’, ‘Drive’, ‘Knock off’).

2.4.2.5.2Turning with turning gear motor Slow turning cutter with the turning gear can be established by selecting the ‘TG’ function key on the SCADA system. The ready for use lamp on the local panel and the function key starts blinking when selected and lids continue when the turning device conditions are fulfilled (see below).

conditions local turning gear selection Start Run Overrule - Local Turning gear mode selected on the bridge X Actions turning gear selected (S1) on LOP:

1. The e-motor clutches are disengaged. 2. After the clutches are disengaged the clutch cabinet is switch over to the turning gear. 3. If the turning gear mode is selected the turning gear clutch is engaged.

Actions turning gear NOT selected (S1) on LOP:

1. Disengage turning gear motor.



conditions turning gear clutch Start Run Overrule - Clutch cabinet IMC selected X - Clutch engaging conditions ok X - Clutches interlocked X - Clutches interlocked one motor operation X - No clutch emergency stop activated X - Turning gear selected from clutch cabinet X - Turning gear selected on LOP (S1) X Turning gear motor: The cutter head can be turned left or right with buttons on the local panel. The motor is running as long as the button is pressed.

conditions turning gear motor Start Run Overrule - Local Turning device mode selected on the bridge X - Turning gear selected on LOP (S1) X - Turning selected on LOP (S2) X - Clutch PS drive disengaged X - Clutch SB drive disengaged X - Turning device clutch engaged X The turning gear motor is interlocked as long as the conditions are not fulfilled.

2.4.2.5.3Turning with the drive Slow turning cutter with the drive can be established by selecting the ‘Drive’ or the ‘Knock-off’ function key on the SCADA system. The ready for use lamp on the local panel and the function key of the selection starts blinking when selected and lids continue when the drive conditions are fulfilled (see below).

conditions local drive selection Start Run Overrul e - Local Drive mode selected on the bridge X - Clutch conditions selected drive for turning is ok X - At least one of the drives is running X Default the PS drive is used for turning. If this drive is not running, the SB drive is selected. Actions drive selected on LOP (S1):

1. The turning device clutch and the clutch of the not selected drive are disengaged 2. The clutch of the selected drive is engaged. 3. The drive is selected in turning mode.

Actions drive NOT selected on LOP (S1):

1. Disengage e-motor clutch. Turning mode: The cutter head can be turned left or right with buttons on the local panel. The motor is running as long as the button is pressed when the following conditions are fulfilled:

conditions local drive turning Start Run Overrule - Local Drive mode selected on the bridge X - Drive selected on LOP (S1) X - Turning selected on LOP (S2) X - Clutch selected drive engaged X - Clutch not selected drive disengaged X - Clutch turning device disengaged X - Drive in turning mode X



- Drive is running X Knock-off mode: The knock-off function can be executed with the knock-off button on the local panel. The IMC sends a knock-off command to the drive. The motor is running for a few seconds as the button is pressed and the following conditions are fulfilled:

conditions local drive turning Start Run Overrule - Local Knock-off mode selected on the bridge X - Drive selected on LOP (S1) X - Knock-off selected on LOP (S2) X - Clutch selected drive engaged X - Clutch not selected drive disengaged X - Clutch turning device disengaged X - Drive in turning mode X - Drive is running X 2.4.2.6Slow turning robot The slow turning Robot mode will be initiated by pressing the ‘ROBOT’ turning selection function key. During the preparation of the mode the function key will blink and after the procedure has finished and the slow turning robot mode is enabled the function key colours green.

conditions slow turning robot mode selection Start Run Overrule - Starter turning device RFU X - Flushing system running (see 2.4.2.9) X - Lubr. Oil system ER cutter running X Pressing the robot turning mode selection function key start the following procedure:

1. Disengage the drive couplings. 2. Engage turning device coupling 3. Send ‘Robot mode’ to the starter of the turning device.

conditions slow turning robot mode enabled Start R un Overrule

- Clutch cabinet IMC selected X - Clutch engaging conditions ok X - Clutches interlocked X - Clutches interlocked one motor operation X - No clutch emergency stop activated X - Turning gear selected from clutch cabinet X - Robot mode selected on the bridge X - Robot selected on LOP (S1) X - Turning selected on LOP (S2) X - Drive PS coupling disengaged X - Drive SB coupling disengaged X - Turning device coupling engaged X Turning gear motor: The cutter head can be turned by the robot interface.

conditions turning gear motor Start Run Overrule - Local Turning device mode selected on the bridge X - Robot selected on LOP (S1) X - Turning selected on LOP (S2) X - Clutch PS drive disengaged X - Clutch SB drive disengaged X



- Turning device clutch engaged X The turning gear motor is interlocked as long as the conditions are not fulfilled. 2.4.2.7Cutter loosing device The cutter loosening device can be controlled from the following control positions only: - Locally with pushbuttons on cutter platform (see 2.4.2.3).

The cutter head loosening device cylinder will be used to move the blocking pall in and out, to loosen the cutter head from the cutter shaft. The loosing device can be operated with pushbuttons in / out on the local panel. A local ‘Ready for use’ signal lamp indicates if the device can be operated. The limit switch cutter head loosening device retracted will be used for indication only. When pressing the push buttons, the IN or OUT solenoid will always be activated. A local ‘Device cylinder in’ signal lamp indicates of the pin is in loosening position.

conditions cutter loosing device Start Run Overrul e - Cutter slow turning mode selected X - No EM stop on cutter platform X - Cutter speed less than 2 rpm X To prevent serious damage if cylinder is going out during dredging the cylinder will be retracted with a configured time interval (setpoint hr) when the cutter drive is running in normal operation. The limit switch retracted is used as a condition for the cutter drive in normal operation mode (see 2.4.2.1.2). 2.4.2.8Cutter ‘Palco’ measurement A torque measurement system (PALCO) is mounted on the cutter shaft to detect over torque. The PALCO system is hardwired connected to the cutter drive clutches and initiates an emergency clutch out command. The IMC system will set the speed reference to the frequency converter to 0 rpm if the corresponding clutches are disengaged (see speed enable conditions 2.4.2.2). The clutches can be re-engaged with the manual speed controller. The following signals from PALCO to IMC are available:

- Cutter shaft speed [rpm] - Cutter shaft power [kW] - Cutter shaft torque [kNm] - Palco alarm limit exceeded - Palco trip limit exceeded

The IMC system accumulates every over torque signal and presents them on the cutter page. These counters can be reset on this page with a ‘Reset’ function key. A signal lamp on the dredging desk is installed to indicate when the Palco alarm limit is active. 2.4.2.9Cutter bearing flushing system The cutter bearings flushing system can be controlled from the following positions: - Via the Bridge SCADA view stations on ‘Flushing system’ screens.



The system can be selected in Manual or Automatic mode with function keys on the SCADA system (Header: ‘Cut Bear Flush’; F-keys: ‘Manual’, ‘Auto’). The selection is always allowed.

2.4.2.9.1Manual controls In Manual mode the system must be started, stopped and controlled by individual actions of the operator. Manual pump start / stop control is available by clicking on the pump symbol on the SCADA interface. A detail popup screen appears and provides function keys to start and stop the pump. A pump has the following individual conditions:

conditions of a flushing pump Start Run Overrule - IMC selected X - Ready for use X Manual flushing valve open / close control is available by clicking on the valve symbol on the SCADA interface. A detail popup screen appears and provides function keys to open and close the valve. On a start command of the pump, first the discharge valve will be closed if not already closed before starting the pump. After the pump running feedback is active a few seconds later the valve will be opened. The valve will be stopped a few seconds after the pump has stopped. If the valve fails the start of the pump will be interrupted.

2.4.2.9.2Automatic controls Start / stop on a start-up request: In Automatic mode the IMC system will start, stop and control the flushing system depending on a start request of cutter drive. The master flushing pump will be started on a request. In case of a take over alarm the back-up pump is started instead. If no request is active the pump is stopped after a predefined stop delay. Standby pump: Always one of the pumps is selected as Master pump. The master pump is the serving pump. The not as master selected pump is automatically the stand-by pump. Changing from Master pump is always allowed. If the during operation the standby pump is selected as master, this pump will be started and the previous master pump will be stopped. If the back-up pump is started on a take over alarm, the failing pump will be stopped. The take over alarm must be rest before the standby system becomes operational again. This can be established by selecting the running back-up pump as master pump. A takeover alarm will be generated if one of the following events occurs:

- Master pump conditions fails (not IMC selected, not ready for use or running failure). - Discharge valve open/close failure during start of the pump.



- On generation of low pressure standby start alarm. - On generation of low flow standby start alarm.

conditions for execution standby start Start Run O verrule

- Standby pump is IMC selected X - Standby pump is Ready for use X - Flushing system Auto selected X - Option Standby control enabled X High / Low flow valve: The high flow valve will be automatically opened or closed controlled when the following conditions are fulfilled:

- The flushing system is in Auto mode. - Option valve control manually is not selected.

Valve will be closed when: Cutter depth is less than 5 meters AND Cutter speed less than 5 rpm other wise the valve will be opened. In case a pump or the valve is manually operated the system will be automatically downgraded to manual mode. An option is available to operate the valve manually only. In this case the system will not be down graded to manual when operating the valve.

2.4.2.9.3Pressure and flow settings The following setpoints can be adjusted on the SCADA interface:

Bearing flushing pressure: - Minimum pressure setpoint. The pressure must be greater or equal to this value before the cutter

may be started. - Pre-alarm pressure setpoint. Pre warning during operation when the cutter is running. - Standby start pressure setpoint. Pressure less than this setpoint triggers a standby start. - Shut down pressure setpoint. Stops the cutter drive. Bearing flushing flow normal and slow turning operation. Slow turning operation has separate setpoints equal to the normal operation: - Minimum main flow setpoint. The flow must be greater or equal to this value before the cutter

may be started. - Pre-alarm main flow setpoint. Pre warning during operation when the cutter is running. - Standby start main flow setpoint. Flow less than this setpoint triggers a standby start. - Shut down main flow setpoint. Stops the cutter drive. Individual bearing flow alarms: - Pre-alarm shaft bearing 1 flow setpoint. - Pre-alarm shaft bearing 2 flow setpoint. - Pre-alarm shaft bearing 3 flow setpoint. - Pre-alarm cutter head bearing flow setpoint.


The following alarms are enabled some time after start request of the cutter system or if one of the flushing pumps are running. The alarm it self is a few seconds delayed. The alarm threshold values are adjustable on the SCADA interface. - Cutter bearing pressure low pre-alarm. - Cutter bearing pressure low standby start alarm. - Cutter bearing pressure low shut down alarm. - Cutter bearing main flow low pre-alarm. - Cutter bearing main flow low standby start alarm. - Cutter bearing main flow low shut down alarm. - Cutter shaft bearing 1 low flow alarm. - Cutter shaft bearing 2 low flow alarm. - Cutter shaft bearing 3 low flow alarm.



- Cutter bearing end shaft low flow alarm. Additional alarms: - Pump running failure alarm. Generated on a running feedback time out or unexpected stop of a

pump. - Master flushing pump cutter failure. Generated as a start request is active and the master pump

is not available or a stand-by start was executed. - Standby flushing pump cutter failure. Generated as a start request is active and the standby

pump is not available.



2.4.3Ladder 2.4.3.1Ladder winch drives

2.4.3.1.1Modes and winch start / stop control Two ladder winches are available for hoisting and lowering the ladder. The winch aux ER systems, drive aux systems and the frequency converter are controller by the AMS system. The IMC system starts all of them via the AMS system. The start command is given with the operation mode selection. This can be established with function keys on the SCADA system (Header: ‘Ladder winches’; F-keys: ‘PS / SB’, ‘Stop’, ‘Auto’, ‘Comb’). The following operation modes are possible: Separate mode with spindle high switch

Activated with the ‘PS / SB’ function key. Both drive and auxiliary systems are started.

Separate mode without spindle high switch

Identical as the separate mode with and extra option which overrules the winch high spindle switch in the frequency converter (hardwired limit; Header: High spindle LS; Fkeys: ‘Enable’, ‘Disable’). This switch is connected to the frequency converter and to the IMC system. The Combined and Automatic modes are interlocked in this situation.

Combined mode Activated with the ‘Comb’ function key. Both drive auxiliary systems are started. Conditions of both ladder winches must be fulfilled and high spndle LS enabled.

Automatic mode The automatic mode can be selected when the winches are in separated or combined mode started.

With the ‘Stop’ function key all systems of both winches are stopped. During start-up execution of the selected function key the key is blinking. After the required systems are running the function key colours constantly if the mode is operational. This is determined by the drive running feedback signal. If the start-up fails the function key colours red.

conditions start ladder winch Start Run Overrule - Winch Drive xx ER system Ready for use - Winch Drive xx ER system Running

X X X A

- Winch Drive xx ER system No critical failure X - No emergency stop Bridge active A - No emergency stop ECR active A - No emergency stop on drive active A - No emergency stop propulsion room active A - No emergency stop cutter platform active A - Isolating switch propulsion room in normal position A - Isolating switch transformer room in normal position A - Drive not in use for the side winch X

2.4.3.1.2Winch operation The dredging desk is provided with pushbuttons to switch the control of the ladder winches ‘On’ or ‘Off’. The ‘On’ status is indicated with a signal lamp in the button. In separate mode a ladder winch is controlled with its own controller lever. In combined mode both winches are controlled by one lever. The first lever that is operated has the control until both levers are back in zero position again. In combined mode both winches are started to run. It is possible that one winch stops during operation because for instance failing of haul or pay out condition. The operation will finish with the remaining winch.



When the automatic mode is active and one of the manual control levers is taken out of the zero position, the automatic mode is deactivated. The automatic mode can be selected again when the manual speed controller is put back into zero position. When switching between separate and combined mode the controllers must be placed in zero position first to enable the winch control again. The IMC system checks if there is winch speed detected on a hoist or pay out command and the setpoint to the drive is greater than minimum value. On a time out the winch is stopped with an alarm. In that case start command must be taken away (lever in zero position or no command from the automatic controller). The alarm is reset on a new command.

conditions enable separate mode Start Run Overrule - Ladder winches work switch on dredging desk active X - Ladder winch drive running X - Separate mode selected X - Ladder winch controller in zero position X

conditions enable combined Start Run Overrule - Ladder winches work switch on dredging desk active X - Both Ladder winch drives running X - Combined mode selected X - Deviation wire length too high X D - Both Ladder winch controllers in zero position X

conditions enable automatic mode Start Run Overrul e - Communication with ACC controller healthy X - Ladder winches work switch on dredging desk active X - At least one Ladder winch drives running X - Combined mode selected - Separate mode selected

X X

X

- Both Ladder winch controllers in zero position X - Ladder winch speed measurement healthy X - Ladder above profile (DTM) data X

conditions running ladder winch Haul Pay out

Overrule

- Ladder winch enabled (see above) X - Both locking cylinders on an end position X - Ladder angle less than 60 deg X - No slack wire (tension cylinder position > 1.65 m) X - Spindle limit switch low not active X - Spindle limit switch high not active - Spindle limit switch disabled

X X X

- Ladder not in locking position X D In manual mode the winch speed is regulated with the control lever between 0 and 100%. In automatic mode the speed will be regulated by the automatic ladder winch controller which is implemented in the Automatic Cutter Control (see paragraph 2.6). The speed is limited to 20% in the following cases: - In both directions if the ladder locking cylinders are not retracted.



- In both directions if the ladder tilting shaft cylinders are not retracted. - In hoisting direction if slack wire is active. - In hoisting direction if nearly highest position is reached (determined with limit switch). - If the speed reduce button is pressed on the dredging desk. The reduced state stays active until the

button is pressed again. A signal lamp in the button indicates the reduced state active. The lowering speed can be limited by the AMS system between 20 and 100% as well. Outputs:

- Mode selections are hardwired send to the frequency converter. - Hoist and pay out commands and speed setpoint. Hoist or pay out command is possible with a

zero speed setpoint. In that case the brake must stay lifted. The commands can change from hoist to pay out. The drive must ramp to the setpoint in the other direction. Synchronic brake lifting and speed control in combined mode is the responsibility of the drives.

- Zero position command when drive has to stop and put the brake back on.

2.4.3.1.3Ladder drive replaces side winch drive In case the ladder winch drive is used to replace the side winch drive all outputs and feedback signals of ladder winch will be rerouted to side winch software module. The ladder winch indications on the SCADA screens have no meaning in this case.

2.4.3.1.4Wire lengths Both winches are provided with an SSI absolute encoder to determine the payout wire length. The ladder wire length is calculated as follows: (wire length PS + wire length SB) / reeving. Wire length calibration must be executed when the ladder is in the secure position. Function keys are provided for individual calibration of the wire length (F-keys: ‘Enable’, ‘Calib’). The secure position is the 0 meter position. The IMC system guards the payout difference of the two winches. Setpoints are available for alarming and trip in combined mode. During separate mode the alarm are suppressed. Specifications wire length calculations: - Drum diameter : 2 m - Wire diameter : 0.064 m - Pay out wire per drum revolution : 2.064 * pi m - Nominal wire speed : 33 m/min - Number of layers : 1 - Ladder reeving : 12 (6 parts per side)

2.4.3.1.5Alarms The following alarms will be implemented:

- Time out starting ladder drive. - Time out winch speed. No winch speed detected on a hoist or pay out command (see above). - ‘Wire length measuring failure’. This alarm will be generated by comparing the calculated wire

speed on the hand of the winch speed with a measured average wire speed (differential calculation in time of the actual wire length measuring). The alarm is enabled when the motor speed is greater than predefines speed level. The alarm is active when the measured average wire speed is less then 80% of the calculated wire speed.

2.4.3.2Ladder securing cylinders The ladder can be locked with securing cylinders one for each side. The cylinders are operated with in / out function keys on the SCADA system (Header: Locking pin left/right; Fkeys: ‘In’, ‘Out’). During execution of the pressed function the button will blink and colours continue if the end position is reached. A solenoid stays active until a few seconds after the end position is reached to ensure that the cylinder will be fully retracted or ejected or on a time out. The key colours red if end position is not active.



conditions locking cylinder operation Start Run Ov errule

- Ladder in locking position X D - No Ladder locking PS EM stop Deck X - No Ladder locking SB EM stop Deck X - Both ladder winches stopped X 2.4.3.3Trunnion and tilting shaft cylinders The trunnion shaft cylinders are used to move the ladder in the lower or upper trunnion position and above the ladder bin for maintenance. The Tilting shaft cylinders are used as a pivot point on the ladder.

2.4.3.3.1Local panel The trunnion- and tilting shaft cylinders are operated with a radio control local panel (LOP) side. The LOP must be enabled before any operation. The enabling is initiated on the bridge with a function key (Header: ‘Tilt/Turn’; Fkey: ‘Enable’). The local panel is provided with:

- Emergency stop - Control selection switch <PS>/<off>/<SB>. - Push buttons tilting shaft cylinder In / Out control. - Signal lamps tilting shaft cylinder end positions.

� Blinking : Moving � Steady : On end position

- Push buttons trunnion shaft cylinder In / Out control. - Signal lamps trunnion shaft cylinder end positions.

� Blinking : Moving � Steady : On end position

- Ready for use (RFU) signal lamp � Blinking : Local control enabled � Steady : Local control conditions fulfilled

conditions LOP operation Start Run Overrule

- Control released from Bridge X - No Ladder trunnion/tilting EM local panel X - No Ladder trunnion/tilting PS EM stop Deck X - No Ladder trunnion/tilting SB EM stop Deck X

2.4.3.3.2Tilting shaft cylinders Depending of the selection PS or SB on the LOP, the tilting shaft cylinder can be ejected or retracted with local pushbuttons. The solenoid stays energized until a few seconds after the end position has reached to ensure that the cylinder will be fully retracted or ejected or on a time out. Two local signal lamps indicate if the cylinder is on his end position (feedback in or out; lights continue) or is moving (blinking).

conditions tilting shaft cylinder Start Run Overru le - Conditions LOP operation fulfilled X - Ladder trunnion/tilting PS/SB side selected X

2.4.3.3.3Trunnion shaft cylinders Depending of the selection PS or SB on the LOP, the trunnion shaft cylinder can be ejected or retracted with local pushbuttons. The solenoid stays energized until a few seconds after the end position has reached to ensure that the cylinder will be fully retracted or ejected or on a time out. Two local signal lamps indicate if the cylinder is on his end position (feedback in or out; lights continue) or is moving (blinking).

conditions trunnion shaft cylinders Start Run Over rule



- Conditions LOP operation fulfilled X - Ladder trunnion/tilting PS/SB side selected X - Ladder tilting shaft cylinders out X 2.4.3.4Ladder wire tension cylinders

2.4.3.4.1Cylinder position The ladder hoisting tension cylinders are used to keep slack out of the wires during dredging. A cylinder above half position (1.65 m) will be treated as a slack wire signal. The cylinder position is based on a CIMS measurement. The cylinder position calibration must be executed when the cylinder is at maximum position. Via function keys on the SCADA system (F-keys: ‘Enable’, ‘Calibr’) a reset pulse is sent to the CIMS measurement.

2.4.3.4.2Accumulator filling/draining Oil filling / draining: The accumulator can be oil filled or drained with function key’s on the SCADA system (Header: ‘Buffer’; Fkey’s: ‘Fill’, ‘Drain’, ‘Stop’). The accumulator level is guarded with level switches to prevent over filling or draining. The filling and draining is limited to maximum 30 minutes.

conditions tension accumulator filling Start Run O verrule - No accumulator high level X - No main hydraulic tank low level X - Starting air function not active X - Blow off air function not active X

conditions tension accumulator draining Start Run Overrule - No accumulator low level X - No main hydraulic tank high level X - Starting air function not active X - Blow off air function not active X Air pressuring: The air pressure at the top of the accumulator can be increased after filling the accumulator with a certain oil level. It can be controlled with function keys on the SCADA system (Header: ‘Air’; Fkeys: ‘Blow off’, ‘Fill’, ‘Stop’). If the fill key is pressed the IMC system will close the air blow off valve (M18.x.2) if not already closed and open the air supply valve (M18.x.1). In case the blow off key is pressed the supply valve will be closed if not already closed and the blow off valve is opened. The operator must stop manually when the desired pressure has been reached.

conditions tension air pressuring Start Run Overru le - Accumulator filling/draining function not active X - Blow off air function not active X Booster air: If a higher pressure is needed than the default air supply pressure, the operator must start the booster air function when the starting air filling is active (Header ‘Booster air’; Fkeys: ‘Fill’, ‘Stop’). The piston of the hydraulic cylinder pump will be moved up and downwards (Y18.x.3 energized / de-energized sequencelly for x/y-time) until the operator stops the booster air or the maximum pressure is reached. The piston will be returned to the downwards position when stopped. The air supply valve will be closed when starting air is stopped.

conditions tension booster air Start Run Overrule - Accumulator filling/draining function not active X



- Air fill function active and running (supply valve open) X - Air pressure above minimum value (PT18.x.1 >= 30 bar) X - Air pressure less than maximum value (PT18.x.1 < 200 bar) X Alarm monitoring: During operation the oil level in the accumulator must stay within limits guarded with level switches. In case of a high or low pre-alarm (3 sec delayed) the operator must adjust the level by pumping oil in or out the vessel. In case the too low or too high alarm is activated (3 sec delayed) all operations must be stopped. This is an operational responsibility. The IMC has no interlocking for that. The accumulator pressure, monitored by PT18.x.1, must stay within limits and is depending of the cylinder position (PM18.x). The IMC generates an alarm if one of the limits is exceeded. The relation between limit values and cylinder positions is monitored as mentioned in the hydraulic ‘Technical specification electric control system’ specifications [4]:

2.4.4Side winches 2.4.4.1Side winch drives

2.4.4.1.1Modes and winch start / stop control The winch aux ER systems, drive aux systems and the frequency converter are controller by the AMS system. The IMC system starts all of them via the AMS system. The start command is given with the operation mode selection. This can be established with function keys on the SCADA system (Header: ‘Side winches’; F-keys: ‘PS/SB’, ‘Stop’, ‘Comb’). The following operation modes are possible: Separate mode: Activated with the ‘PS/SB’ function key. Both drives and auxiliary systems are

started.

Combined mode: Activated with the ‘Comb’ function key. Both drives and auxiliary systems are started.

Auto mode: The automatic mode can be selected when the winches are in combined mode started.

With the ‘Stop’ function key all systems of both winches are stopped. During start-up execution of the selected function key the key is blinking. After the required systems are running the function key colours constantly if the mode is operational. This is determined by the drive running feedback signal. If the start-up fails the function key colours red.



conditions start side winch xx Start Run Overrule - Winch Drive xx ER system Ready for use - Winch Drive xx ER system Running

X X X A

- Winch Drive xx ER system No critical failure X - No emergency stop Bridge active A - No emergency stop ECR A - No emergency stop on drive active A - No emergency stop deck A - Isolating switch on ladder in normal position A - Isolating switch transformer room in normal position A

2.4.4.1.2Separate mode control A winch can be individually speed controlled with the manual control handle on the dredging desk. The thyristor-bridge should be enabled on a hauling or pay outing command of the IMC system and the motor speed should ramp up to the speed reference.

conditions separate mode side winch xx Start Run O verrule - Feedback signal frequency converter started active X - Conditions drive fulfilled X - Separate mode selected X - Winch control dredging desk enabled X - Manual speed controller in zero position X The torque setpoint has no meaning in this mode.

2.4.4.1.3Manual combined control The hauling speed is adjustable with the controllers, one for each direction. The pay out winch will be torque controlled to keep the wires tensioned. The torque will be regulated with a brake force controller on the desk. The haul speed setpoint of the pay outing winch will be set about 10% of the nominal winch speed.

conditions manual combined control Start Run Overr ule - Feedback signal frequency converter PS started active X - Feedback signal frequency converter SB started active X - Conditions drive PS fulfilled X - Conditions drive SB fulfilled X - Winch control dredging desk enabled X - Combined mode selected X - Exactly one spud grounded X D - Cutter drive running (see note 1) X D Notes:

1. In case the cutter speed goes to zero, for instance when one of the clutches disengage or cutter is stalling, the swing auto mode stays active only the swing speed is reduced to zero.

2.4.4.1.4Automatic mode control In automatic mode the swing, swing speed, dredging pattern, override control, etc. are controlled by the Automatic Cutter Controller (see 2.6). The automatic cutter controller provides the following basic modes:

- Auto swing mode. In this mode all geometric controls are available. Only the process master controllers are inactive.

- Auto dredge mode. In this mode all control functions are active including the master controllers. It is possible to selected or deselect a individual master controller for operation.

The automatic swing control must be activated with function keys on the SCADA interface or with push buttons on the dredging desk. It provides two push buttons to initiate the first swing direction (To PS, To



SB) and one stop (direct) function key. The function key colour on the SCADA interface indicates the state of the swing process.

conditions auto swing Start Run Overrule - Communication with ACC controller healthy. X - No gyro compass failure X - Side winch PS/SB torque measurement healthy X - Feedback signal frequency converter PS started active X - Feedback signal frequency converter SB started active X - Conditions drive PS fulfilled X - Conditions drive SB fulfilled X - Winch control dredging desk enabled X - Combined mode selected X - Exactly one spud grounded X D - Cutter drive running (see note 1) X D Notes:

1. In case the cutter speed goes to zero, for instance when one of the clutches disengage or cutter is stalling, the swing auto mode stays active only the swing speed is reduced to zero.

Every master controller has its own conditions. In case of condition failure the controller will be switched off.

conditions cutter torque control Start Run Overrul e - Cutter speed measurement healthy. X - Cutter torque measurement healthy. X

conditions vacuum & density control Start Run Over rule - Vacuum measurement healthy. X - Velocity measurement healthy. X - Density measurement healthy. X

conditions mean density control Start Run Overrule - Vacuum measurement healthy. X - Velocity measurement healthy. X - Density measurement healthy. X

conditions intermediate pressure control Start Run Overrule - Vacuum measurement healthy. X - Intermediate pressure 1 measurement healthy. X - Velocity measurement healthy. X - Density measurement healthy. X

conditions velocity & discharge pressure control St art Run Overrule - Vacuum measurement healthy. X - Intermediate pressure 1 measurement healthy. X - Intermediate pressure 2 measurement healthy. X - Discharge pressure measurement healthy. X - Velocity measurement healthy. X - Density measurement healthy. X - Dredge pump DRPx speed measurement healthy. X - Dredge pump DRPx torque measurement healthy. X



2.4.4.1.5Over speed limit The speed of the hauling winch will be reduced in case the pay outing winch exceeds the maximum speed. The over speed controller is active in combined mode.

2.4.4.1.6Wire lengths Both winches are provided with an SSI absolute encoder to determine the payout wire length. Function keys are provided for individual calibration of the wire length (F-keys: ‘Enable’, ‘Calib’). The wire length will be reset to a predefined offset in meters (changeable via SCADA). Specifications wire length calculations: - Drum diameter : 2 m - Wire diameter : 0.064 m - Pay out wire per drum revolution : 2.064 * pi - Nominal wire speed : 22 m/min - Number of layers : 1

2.4.4.1.7Alarms: The following alarms will be implemented:

- Time out starting side winch drive. - Wire length pre-alarm low. Generated when the wire length is less than a predefined alarm limit

(changeable via SCADA). - ‘Wire length measuring failure’. This alarm will be generated by comparing the calculated wire

speed on the hand of the winch speed with a measured average wire speed (differential calculation in time of the actual wire length measuring). The alarm is enabled when the motor speed is greater than predefines speed level. The alarm is active when the measured average wire speed is less then 80% of the calculated wire speed.

2.4.4.2Spooling device The spooling devices are used to guide the side wire from the storage part of the drum and wind it up on the working part of the drum or backwards. The side shifting and the up and down movement of the side shifting device are done with hydraulic cylinders. The spooling device is built on the side wire winch. The winches spooling devices are operated on deck with a local control panel. Both spooling devices will be controlled from the same panel. There can only be one (SB or PS) spooling device in control at the time. The local panel must be enabled from the bridge SCADA system. The control panel is provided with:

- Control selection switch <Winch SB>/<Off>/<Winch PS>. - A lever controller for direction and speed ‘up’ and ‘down’. - A lever controller for direction and speed ‘left’ and ‘right’. - ‘Ready for use’ signal lamp

� Blinking : Spooling device enabled from bridge. � Steady : Conditions selected spooling device fulfilled.

conditions spooling device xx Start Run Overrule

- Spooling device enabled from bridge X - No EM stop side winches from bridge X - No local EM stop spooling device PS X - No local EM stop spooling device SB X - Spooling device xx selected X - Both controllers in zero position X On a ‘left’ or ‘right’ command of the local control lever, the proportional amplifier is enabled and the speed is ramped up to the controller setpoint. Up and down ramp rates are fixed in the PLC processor. On a zero command the speed will be ramped down to zero first. At zero speed and controller is still in zero position, the proportional amplifier is disabled.



The ‘up’ / ‘down’ control works in the same way as the side shifting control. 2.4.5Spud carrier system 2.4.5.1Spud carrier The spud carrier is controlled by a single control unit connected to the IMC system via a serial connection (see 2.10.2). The spud carrier can be operated in 5 different modes:

- Position Mode . A position setpoint will be sent to the Spud Carrier PLC (SCP) and the SCP will bring the Spud Carrier to the desired position.

- Speed mode . A speed setpoint from the speed lever will be sent to the Spud Carrier PLC (SCP) and the SCP will bring the Spud Carrier forwards or backwards with the desired speed.

- Speed open loop mode (positioning measurement incorrect). A speed setpoint from the speed lever will be sent to the Spud Carrier PLC (SCP) and the SCP will bring the Spud Carrier forwards or backwards with the desired speed. SCP will not ramp down on the approaching the minimum or maximum position and will stop on the limit switches.

- Emergency control mode . Emergency mode is available when one or more pressure transmitters are incorrect

- Commissioning mode . In commissioning mode it is possible to move the spud carrier at reduced speed in or out without stopping on any sensor.

Spud carrier movements are only possible when the control is enabled via the SCADA system (F-key: ‘Enable’).

conditions spud carrier enable Start Run Overrule - Communication link with SC PLC ok X - No spud carrier EM stop / 230V failure X - No valve failure bottom side X - No valve failure rod side X - Spud carrier enabled on SCADA interface X Available setpoints: - Position setpoint - Speed setpoint in normal and open loop mode - Speed setpoint in emergency mode - Step setpoint X forwards/backwards - Maximum speed in - Maximum speed out - Maximum pulling force - Maximum pushing force - Friction pulling force - Friction pushing force - Push button forwards (normal & open loop) - Push button backwards (normal & open loop) - Push button forwards (emergency mode) - Push button backwards (emergency mode) - Step setpoint forwards EOS SB - Step setpoint forwards EOS PS - Advanced correction PS - Advanced correction SB The spud carrier can be moved with the following controls: a) Available controls on dredging desk:



Mode: POS /

SP Speed

OL EM

- Manual speed control lever dredging desk X X X - Manual position control setpoint (counter) X

The delta position pulses from the position controller (counter) are added or subtracted to the position setpoint. The pushbuttons are adding or subtracting a via SCADA adjustable predefined step X to the position setpoint. In case the speed controller is in use the position setpoint will be kept equal to the actual cylinder position. b) Via function keys on the SCADA system:

Mode: POS / SP

Speed OL

EM

- F-key ‘Full back’ X - F-key ‘Step Back’ X - F-key ‘Step Forw’ X - Position setpoint changes X The step keys are adding or subtracting a via SCADA adjustable predefined step X to the position setpoint. The full back key writes 0 m into the position setpoint. c) Via the automatic swing control:

Mode: POS / SP

Speed OL

EM

- At the end of swing PS / SB (auto step mode) X - During swing (auto position mode) X Auto step mode: At the end of swing (EOS) a predefined setpoint is added to the position setpoint. Spud carrier auto control is active when the ‘EOS step’ ‘Auto’ function key is selected. If the EOS PS or SB is reached the spud carrier is triggered to make a step forwards. Auto position mode: Because of alternating the position of the spud carrier during dredging, the radius of the swing will continue change. In this mode this controller will compensate that by calculating the spud carrier position setpoint during swinging. The correction is depending of the slew angle. At an angle of 0 deg the correction is zero as well (see 2.6).

2.4.5.1.1Position / speed mode The position and speed modes to be enabled on the SCADA system (F-key: ‘Pos/Sp’). The position control mode is the default mode. The mode will be set to automatically to “speed mode” when the speed controller is in use. After that the mode will be set back to position mode.

conditions spud carrier position / speed mode Start Run Overrule - Communication link with SC PLC ok X - No spud carrier EM stop / 230V failure X - No valve failure bottom side X - No valve failure rod side X - No supply pressure fault X - No limit switch cylinder in (pull direction only) X - No limit switch cylinder out (push direction only) X



- No pressure transmitter PT13.1 failure X - No pressure transmitter PT13.2 failure X - No pressure transmitter PT13.3 failure X - No pressure transmitter PT13.4 failure X - No position transmitter failure X - No limit switch fault X - No position / speed fault X - No cavitation failure X Note: The conditions are combined in a ‘Mode xx possible’ feedback signal retrieved from the spud carrier control unit.

2.4.5.1.2Speed open loop mode The speed open loop mode to be selected on the SCADA system (F-key: ‘Speed OL’). The mode “speed control (open loop)” will be active when the speed controller is in use and the positioning measurement is overruled.

conditions spud carrier position / speed mode Start Run Overrule - Communication link with SC PLC ok X - No spud carrier EM stop / 230V failure X - No valve failure bottom side X - No valve failure rod side X - No supply pressure fault X - No limit switch cylinder in (pull direction only) X - No limit switch cylinder out (push direction only) X - No pressure transmitter PT13.1 failure X - No pressure transmitter PT13.2 failure X - No pressure transmitter PT13.3 failure X - No pressure transmitter PT13.4 failure X - No limit switch fault X - No cavitation failure X Note: The conditions are combined in a ‘Mode xx possible’ feedback signal retrieved from the spud carrier control unit.

2.4.5.1.3EM control mode The Emergency control mode to be selected via the SCADA system (Fkey: ‘EM’). The purpose of emergency control is when for some reason the normal control system cannot be used (faulty transmitter or position signal). In that case it is possible to operate at reduced speed by enabling "emergency control". The actual speed does not only depend on the required speed signal but also on the load.

conditions spud carrier EM mode Start Run Overrule - Communication link with SC PLC ok X - No spud carrier EM stop / 230V failure X - No valve failure bottom side X - No valve failure rod side X - No limit switch cylinder in (pull direction only) X - No limit switch cylinder out (push direction only) X - No limit switch fault X Note: The conditions are combined in a ‘Mode xx possible’ feedback signal retrieved from the spud carrier control unit.

2.4.5.1.4Commissioning mode The commissioning In and Out commands to be initiated on the SCADA system (F-keys: ‘Comm In’, ‘Comm Out’). The spud carrier will move slowly in the requested direction without stopping on any senor.



conditions spud carrier commissioning mode Start R un Overrule - Communication link with SC PLC ok X - No spud carrier EM stop / 230V failure X - No valve failure bottom side X - No valve failure rod side X Note: The conditions are combined in a ‘Mode xx possible’ feedback signal retrieved from the spud carrier control unit. The cylinder position is based on a CIMS measurement. The cylinder position calibration must be executed when the cylinder is at a minimum (retracted) position. Via function keys on the SCADA system (F-keys: ‘Enable’, ‘Calibr’) a reset pulse is sent to the spud carrier control PLC. Remote reset of the spud carrier control unit is possible via the SCADA system (F-key: ‘Reset’). 2.4.5.2Spud carrier buffer This cylinder is used to give the Spud carrier wheel a pre-tension to prevent the wheels hammering on the rails during dredging. The buffer pressure can be regulated depending on a new entered setpoint on the SCADA system. The buffer will be filled or drained until the new pressure is reached. A maximum time out alarm will stop the action. The alarm will be reset on a new setpoint change. 2.4.6Spud handling 2.4.6.1 Local control panel spud tilting Spud tilting can be operated from a local panel. The panel must be enabled form the bridge SCADA system. The local panel is provided with:

- Selection switch spud tilting <Main>/<Off>/<Aux> - Pushbutton locking cylinders <In>/<Out> - Pushbutton guide locking cylinders <In/<Out> - Signal lamps guide locking cylinders ‘In’ or ‘Out’ on end state. - Pushbutton tilting cylinders <Up>/<Down> - Signal lamp selected spud horizontal position end state active. - Spud hoisting winch controller with speed setpoint and direction contacts. - Signal lamp spud tilting ‘Ready for use’.

� Blinking : Enabled on the bridge SCADA system � Steady : Conditions selected spud fulfilled

2.4.6.2Spud hoisting winch

Tension cylinder

position

Corr SP

Corr H-limit

Slack wire

Corr L-limit

Min position

Spud grounded

Two spud hoisting winches are provided, one for each spud (main / aux.). The spud winches are used to hoist and lower the spud poles in a controlled way or in a free fall mode. The hydraulic motor can be connected to the drum with a coupling and is provided with a hydraulic brake. The drum is provided with a friction brake.

The winches can be controlled from:



• The bridge dredging desk. The winch controller and the freefall button become active after a control release. This can be established with push buttons on the dredging desk. A signal lamp indicates the release state.

• The spud tilting local panel. Control local panel becomes active when tilting is enabled from the bridge SCADA system and the selection switch on the panel on Main or Auxiliary. Only speed mode is possible and bridge control is disabled.

2.4.6.2.1Speed mode

conditions hoisting winch speed mode bridge Start Run Overrule - Control dredging desk released X - No EM stop bridge active X - No emergency spud hoisting selected X - Spud tilting not active X - Free fall procedure not active X - Bridge controller in zero position X

conditions hoisting winch speed mode local Start R un Overrule - Tilting selected on bridge SCADA system X - Winch selected on local panel X - No EM stop bridge active X - No emergency spud hoisting selected X - Local controller in zero position X

conditions hoist / pay out direction Hoist Pay out

Overrule

- Spud not in highest position (LS) X - Spud not in highest position (Wire) X D - Spud not in lowest position (LS) X - Spud not in lowest position (Wire) X D - No slack wire (tension cylinder too high) X D Actions on hoist or pay out command of the lever:

1. The proportional amplifier is enabled and the speed is ramped up to predefined wire force determined with the pressure transmitter high side of the hydraulic motor (PT25.x.1).

2. If the wire force/pressure is high enough the hydraulic motor brake is released (Y25.x.3). 3. After the brake is released (PS25.x.1) and a small time delay the winch speed is ramped to the

controller setpoint in hauling or pay outing direction. On a time out of one of the actions the start is interrupted, the brake is put back on and an alarm is generated. The controller has to be set in zero position first to reset the alarm and to restart again. Actions on zero command of the lever:

1. The speed will be ramped down to zero. 2. At about zero speed and controller is still in zero position, the brake is put back on. 3. After a small time delay the proportional amplifier is disabled.

Up and down ramp rates are fixed in the PLC processor. The hoist or pay out speed is limited to 20% if the following conditions for high speed are not fulfilled:

conditions hoist / pay out high speed Hoist Pay out

Overrule

- Spud not in high position (Wire) X



- Spud not in low position (Wire) X - Spud locking pin PS retracted X D - Spud locking pin SB retracted X D - Spud EM locking PS pin retracted X D - Spud EM locking SB pin retracted X D

2.4.6.2.2Freefall mode

conditions hoisting winch freefall mode Start Run Overrule - Control dredging desk released X - No EM stop bridge active X - No emergency spud hoisting selected X - Spud tilting not active X - Speed procedure not active X - Spud locking pin PS retracted X D - Spud locking pin SB retracted X D - Spud EM locking PS pin retracted X D - Spud EM locking SB pin retracted X D - Speed controller in zero position X Actions on a free fall command:

1. The friction brake is lifted to a certain extent with the proportional valve Y25.x.5 (proportional card enabled) and released with solenoid Y25.x.4. The brake pressure must increase to a certain level (PT25.x.2).

2. If the friction brake pressure is high enough, two additional brakes are lifted by Y25.x.6 to be checked with pressure switch PS25.x.2.

3. After that the last additional brakes are lifted by Y25.x.7 to be checked with pressure switch PS25.x.3.

4. By lifting the last brakes the spud starts falling controlled by the friction brake. The pressure to the friction brake will be decreased via a curve to increase the speed of the drum. The IMC system will control the brake pressure to prevent that the drum speed exceeds the maximum speed of 100 rpm.

5. When the spud hits the ground can be determined by a de-acceleration of the winch. At that moment or after a maximum time out the friction brake will be increased to stop the winch much faster. At about half stroke position the all brakes are put back on and after a small time delay the proportional amplifier is disabled.

6. In case the winch speed is too less before the half stroke position is reached the winch starts paying out by controlling the motor brake Y25.x.3 and the payout solenoid Y25.x.1.

On a time out of one of the actions the free fall is interrupted. The brake is put back on and an alarm is generated. During the free fall the hydraulic motor brake must stay on. This is checked witch the pressure switch PS25.x.1. The free fall is indicated with a blinking signal lamp on the dredging desk.

2.4.6.2.3Tension cylinder correction mode The purpose of this function is to keep the tension cylinder between a maximum and a minimum setpoint. If one of the setpoint is reached the winch will be hoisted or lowered until the tension cylinder position is half way between the two setpoints ( (MinSP + MaxSp) / 2 ). Selection of the correction mode has to be enabled on the SCADA interface (Header: ‘Tension Corr’; Fkeys: ‘Main’, ‘Aux’). The function key is yellow when the selection is enabled and green when standby or active.

conditions hoisting winch correction mode selection Start Run Overrule - Control dredging desk released X



- No EM stop bridge active X - No emergency spud hoisting selected X - Spud tilting not active X

conditions hoisting winch correction mode execution Start Run Overrule - Correction mode selected X - Free fall procedure not active X - Speed procedure not active X - Spud locking pin PS retracted X D - Spud locking pin SB retracted X D - Spud EM locking PS pin retracted X D - Spud EM locking SB pin retracted X D - Speed controller in zero position X - No slack wire (tension cylinder too high) X D - Spud grounded X Actions when limit is reached:

1. The hydraulic motor brake is released (Y25.x.3) to be checked with pressure switch PS25.x.1. 2. After a small time delay the proportional amplifier is enabled and the speed is ramped up to hoist

or lower the winch until the wire tension cylinder position is about half the stroke. The speed will be proportional to the half position setpoint and limited to 20%.

3. At about half stroke position the brake is put back on and after a small time delay the proportional amplifier is disabled.

On a time out of one of the actions the correction is interrupted. The brake is put back on and an alarm is generated.

2.4.6.2.4Wire length An SSI encoder is installed on the drum to measure the payout wire length. The wire length is corrected with the tension cylinder position multiplied with a reeving factor. Calibration must be established in a predefined position from which the exact length is known. The maximum and minimum payout limits will stop the winch, the pre-warning limits reduces the winch speed. Specifications wire length calculations: - Drum diameter : 2 m - Wire diameter : 0.072 m - Pay out wire per drum revolution : 6.735574 m - Nominal wire speed : … m/min - Reeving factor tension cylinder : 2

2.4.6.2.5Spud grounded A spud is grounded if:

- AND the tension cylinder position is greater than 1.0 m. - AND spud locking pin PS is in or overruled. - AND spud locking pin SB is in or overruled. - AND spud EM locking pin PS is in or overruled. - AND spud EM locking pin SB is in or overruled.

2.4.6.3Spud emergency hoisting Emergency spud hoisting is operated on deck with a local control panel, one panel for each spud. The control is hardwired. The 24Vdc power supply is obtained from the IMC system. The control panel is provided with:

Fixed part: - Selection switch emergency hoisting <Off>/<On>. - ‘Ready for use’ signal lamp



� Steady : Work switch ‘On’. Portable part: - Pushbuttons engaging cylinders ‘Forward’ / ‘Backwards’. - Selection switch engaging cylinders ‘Floating’ / ‘Non floating’ - Pushbuttons lifting cylinders ‘In’ / ‘Out’. - Pushbuttons locking cylinders ‘In’ / ‘Out’. - Selection switch locking cylinders ‘Floating’ / ‘Non floating’

The emergency hoisting panel can be operated when the selection switch is in the ‘On’ position. The locking cylinders are operated from the emergency logic when the selection switch is in the ‘On’ position and from the IMC PLC when the selection switch is in the ‘Off’ position. 2.4.6.4Spud locking cylinders The spud locking cylinders can be controlled from:

• The bridge SCADA system spud locking cylinders in/out with function keys on the SCADA system (Header: ‘Main/Aux spud lock’; F-keys: ‘In’, ‘Out’).

• From the local tilting panel when tilting panel is selected on the bridge SCADA system and the spud is selected on the local panel.

The solenoid stays energized until a few seconds after the end position has reached to ensure that the cylinder will be fully retracted or ejected or on a time out. Cylinder operation is always done in non floating mode (Non floating solenoid to be operated parallel with retraction or ejection solenoid). The cylinders will be set in floating mode if the cylinder has stopped moving in extending direction even when the end limit switch in extended position is not reached. Floating solenoid to be energized for about 2 sec. The floating mode can be checked with a pressure switch (PS5.x.1).

Conditions spud locking cylinders bridge Start Run Overrule - No EM stop tilting from bridge X - No EM stop tilting local X - No spud tilting enabled X - No emergency hoist active X - Locking cylinders free from nock (see note 1) X D - Spud hoisting winch not running (zero speed) X

Conditions spud locking cylinders local Start Run Overrule - No EM stop tilting from bridge X - No EM stop tilting local X - Spud tilting enabled X - Spud selected on local panel X - No emergency hoist active X - Spud hoisting winch not running (zero speed) X Notes:

1. The locking cylinders can be moved if the locks cylinders are positioned between two nocks on the spud. The number of knocks, distance between nocks, safe distance from a knock and the position of the first knock are programmed in the PLC. The spud position is determined out of the pay out wire of the hoisting winch.

2.4.6.5Spud guide locking cylinders The spud guide locking cylinders can be controlled from:

• The bridge SCADA system spud guide locking cylinders in/out with function keys on the SCADA system (Header: ‘Main/Aux spud guide lock’; F-keys: ‘In’, ‘Out’).




The solenoid stays energized until a few seconds after the end position has reached to ensure that the cylinder will be fully retracted or ejected or on a time out. The high pulling force solenoid (Y9.x.3) is energized parallel with the out solenoid (Y9.x.1)

Conditions spud guide locking cylinders bridge Star t Run Overrule - No EM stop tilting from bridge X - No EM stop tilting local X - No spud tilting enabled X - No emergency hoist active X - Spud hoisting winch not running (zero speed) X

Conditions spud guide locking cylinders local Start Run Overrule - No EM stop tilting from bridge X - No EM stop tilting local X - Spud tilting enabled X - Spud selected on local panel X - No emergency hoist active X - Spud hoisting winch not running (zero speed) X 2.4.6.6Spud tilting cylinders The spud tilt cylinders are used to move the spud guides between the vertical (working position) and horizontal position. The spud guide locking cylinders can be controlled from:

• The bridge SCADA system spud tilting up/down with function keys on the SCADA system (Header: ‘Main/Aux Spud Tilt’; F-keys: ‘Up’, ‘Down’, ‘Stop’). The spud tilting must be enabled on the SCADA system before any tilting action can be executed.


Pressure monitoring (PT8.x.1/2/3/4): Tilting is stopped and interlocked at a pressure difference of more then … bars between the two cylinders (Difference between bottom - bottom and rod - rod) or when the pressure of one cylinder is double of the other cylinder. When the pressure on both cylinders (bottom - bottom and rod - rod equal) cylinders rises above … bars the operation is stopped. To prevent cavitation in the cylinders, the operation is stopped when one of the pressures during movement is lower than 3 bar during small time delay (about 2 sec).

Conditions spud tilting cylinders Start Run Overru le - Spud tilting enabled X - No EM stop tilting from bridge X - No EM stop tilting local X - No pressure difference interlock alarm X - No maximum pressure alarm X - No cavitation alarm X - Spud locking cylinder PS retracted X - Spud locking cylinder SB retracted X Emergency tilting:



The emergency tilting mode must be selected on the SCADA system. This can only be done with the auxiliary or emergency pump sets. To ensure that, the pressure solenoids of the main pumps will be de-energized in emergency mode. In the emergency mode Y8.x.4 is energized parallel with the up/down tilting solenoids Y8.x.1 an 2. In normal mode Y8.x.3 is energized parallel with the up/down tilting solenoids. 2.4.6.7Spud hoisting tension cylinders Each spud hoisting arrangement (main- and auxiliary spud) has a tensioning cylinder. The cylinders are positioned in line with the spud hoisting wire forward of the spud. The tension cylinders are used to keep slack out of the hoisting wire during dredging and during free falling of the spud. During free falling, the cylinders have a restricted speed. The cylinders have a double characteristic. The upper part is used for tensioning and the lower part is for buffering.

2.4.6.7.1Cylinder position A cylinder at high-high position will be treated as a slack wire signal. The cylinder position is based on a CIMS measurement. The cylinder position calibration must be executed when the cylinder is at a maximum position. Via function keys on the SCADA system (F-keys: ‘Enable’, ‘Calibr’) a reset pulse is sent to the CIMS measurement.

2.4.6.7.2Accumulator filling/draining Buffer oil filling / draining: The oil buffer can be filled or drained with function key’s on the SCADA system (Header: ‘Buffer’; Fkey’s: ‘Fill’, ‘Drain’, ‘Stop’). The accumulator level is guarded with level switches to prevent over filling or draining. The filling and draining is limited to maximum 30 minutes.

conditions tension accumulator filling Start Run O verrule - No accumulator high level X - No main hydraulic tank low level X - Starting air function not active X - Blow off air function not active X

conditions tension accumulator draining Start Run Overrule - No accumulator low level X - No main hydraulic tank high level X - Starting air function not active X - Blow off air function not active X It is necessary to check the amount of oil in the buffer vessel after each spud lowering action. When the tension cylinder is in extended position (> 1.0 m) for more than 2 minutes the pressure is checked by means of PT19.x.2. In case the pressure is too less Y19.x.1 is energized until the pressure is >= 105 bar or a time out limit exceeds. In the last case an alarm is generated. Air pressuring: The air pressure at the top of the accumulator can be increased after filling the accumulator with a certain oil level. It can be controlled with function keys on the SCADA system (Header: ‘Air’; Fkeys: ‘Blow off’, ‘Fill’, ‘Stop’). If the fill key is pressed the IMC system will close the air blow off valve (M19.x.2) if not already closed and open the air supply valve (M19.x.1). In case the blow off key is pressed the supply valve will be closed if not already closed and the blow off valve is opened. The operator must stop manually when the desired pressure has been reached.

conditions tension air pressuring Start Run Overru le - Accumulator filling/draining function not active X



- Blow off air function not active X Booster air: If a higher pressure is needed than the default air supply pressure, the operator must start the booster air function when the starting air filling is active (Header ‘Booster air’; Fkeys: ‘Fill’, ‘Stop’). The piston of the hydraulic cylinder pump will be moved up and downwards (Y19.x.3 energized / de-energized sequencelly for x/y-time) until the operator stops the booster air or the maximum pressure is reached. The piston will be returned to the downwards position when stopped. The air supply valve will be closed when starting air is stopped.

conditions tension booster air Start Run Overrule - Accumulator filling/draining function not active X - Air fill function active and running (supply valve open) X - Air pressure above minimum value (PT19.x.1 >= 30 bar) X - Air pressure less than maximum value (PT19.x.1 < 200 bar) X Oil vessel filling: The oil filling of the oil/air vessel can be adjusted by pulling in the tension cylinder by means of the hoisting winch with lifted spud. Control with function keys in the SCADA system (Header: ‘Oil vessel tensioner’; Kkeys: ‘Fill’, ‘Stop’). When started the sequence first starts air bleeding by energizing Y19.x.4 until level switch LS19.x.3 closes. Secondly Y19.x.5 is energized until level switch LS19.x.3 opens again. The sequence can be interrupted by pushing the stop button or on a level switch time out. In the last case an alarm is generated and the start function key colours red. Air bleeding: Air bleeding form the oil/air vessel needs to be done on realer base. The IMC system provides air bleeding on manual and automatic base (Header: ‘Air bleed’; Fkeys: ‘Start’. ‘Auto’). The air bleeding sequence first energizes Y19.x.4 for 10 sec to air bleed and subsequently Y19.x.5 for 10 sec to refill with oil. The manual bleeding function is executed with the start key. The automatic function is executed once a week when the auto function key is selected. If the manual air bleed function is pressed the automatic interval timer is reset. The auto function stays active. Alarm monitoring: During operation the oil level in the accumulator must stay within limits guarded with level switches. In case of a low pre-alarm (3 sec delayed) the operator must adjust the level by pumping oil in the vessel. In case the too low or too high alarm is activated (3 sec delayed) all operations must be stopped. This is an operational responsibility. The IMC has no interlocking for that. 2.4.6.8Spud shifting winches The Spud shifting winches are used for Spud shifting in the longitudinal way, to slide the spud in and out of the spud guide. The same winches can reach both spud guides. Control is by means of a local control panel. The LOP must be enabled before any operation. The enabling is initiated on the bridge with a function key. The local control panel is provided with:

- Work switch (1 fore each connection station (Fore/Aft) - EM stop push button - Control selection switch <Winch Aft>/<Off>/<Winch Fore>/<Combined>. - Winch speed controller. - Brake force controller. - Ready for use (RFU) signal lamp

� Blinking slow : Enabled from the bridge SCADA system � Steady : Control conditions fulfilled

conditions spud shift winches LOP Start Run Overru le



- Local control on bridge enabled X - No EM stop local Aft X - No EM stop local Fore X - No EM stop local panel / work switch (enabled after accept control) X - Spud shifting winch controller in zero position X

2.4.6.8.1Winch Aft or Winch Fore mode On a hoist or pay out command first the brake setpoint is ramped up (Y26.x.4) to 100% in hoist direction or 20% in pay out direction. After a small delay (0.5 sec) the brake is lifted (Y26.x.3) and the speed is ramped up to the controller speed setpoint (Y26.x.1/2). The maximum speed is 100% in hoist or payout direction. Up and down ramp rates are fixed in the PLC processor. In case of a direction change the speed will be ramped to the controller setpoint in the other direction. Brake setpoint is changed when the speed ramps up in the other direction. On a zero command the speed will be ramped down to zero first. At zero speed after about 0.5 sec delay, the brake is put back on and the brake setpoint set to 0%. In case the control is switched off (condition failure) the winch is stopped without ramping down.

2.4.6.8.2Combined mode In combined mode one winch will only hoist with a maximum speed of 40% regulated with the speed controller and the other winch is paying out in brake mode regulated with the potentiometer on the local panel. The winch selection is done with the speed controller (hoist command: Fore winch up, Aft winch down; lower command: Aft winch up, Fore winch down). On a hoist or payout command first the brake setpoints are set to 100% for the hoisting winch and the potentiometer setpoint for the lowering winch. After about 0.5 sec delay the brakes are lifted and both winches can be manipulated. The setpoints are ramped. Up and down ramp rates are fixed in the PLC processor. On a zero command the speed ramped down and the brake force is ramped up. After about 0.5 sec delay the brakes are put back on. In case the control is switched off (condition failure) the winch is stopped without ramping down. 2.4.7Barge loading installation 2.4.7.1Control position barge loading arms The barge loading arms can be controlled from the following control positions only: - From a Bridge SCADA work station. - Barge loading PS with control handles on the Barge Loading Desk (BCD) PS. - Barge loading PS with control handles on the Dredging Control Desk (DCD) left side. - Barge loading SB with control handles on the Barge Loading Desk (BCD) SB. - Barge loading SB with control handles on the Dredging Control Desk (DCD) right side.

Every control position is provided with two pushbuttons ‘On’ and ’Off’ to select respectively deselect the control on that desk. It is allowed to select the control position even when the control on the other desk is active. The last selected control becomes the control position. This is indicated with a signal lamp in the button. Conditions to select the control for every individual barge loading side:

conditions control position selection Start Run Ov errule - No EM stop near gantry Aft X - No EM stop near gantry Fore X - No EM stop from Dredging desk X - No EM stop from Barge loading desk PS X - No EM stop from Barge loading desk SB X



2.4.7.2Gantry and hinge The gantry is operated with manual speed controller. The controller of a control position must be set zero first after the control position is selected. On a hoist or pay out command the direction solenoid is energized and the speed is ramped up to the controller setpoint. Up and down ramp rates are fixed in the PLC processor. On a zero command or direction change command the speed will be ramped down to zero first. At zero speed, about 0.5 sec delay, the direction is changed or deactivated depending on the actual request. In case of a direction change the speed will be ramped up again to the controller setpoint. In case of a control position change the controller of the new selected position determines the setpoints and commands. The procedure to the new controller commands is the same as described above. In case the control is switched off (pushing the button or a condition failure) the gantry is stopped without ramping down. The hinge is operated in the same way as the gantry.

conditions enable gantry / hinge Start Run Overrul e - Desk control position selected X - Controller in zero position X 2.4.7.3Launder pipe valves and flaps Manual valve / flap open / close control is available by clicking on the valve symbol on the SCADA interface. A detail popup screen appears and provides function keys to open and close the valve.

conditions enable launder pipe valves and flaps Sta rt Run Overrule - Desk control position dredging desk selected - Desk control position barge loading selected

X X

X

2.4.7.4Mooring winches These winches are used for mooring and handling of barges under the barge-loading arms and to keep the barges ad the right placed by using a constant adjustable pulling force (constant tensioning). The barge mooring winches can be controlled from a local panel near the winch. The local panel is provided with:

- Work switch / EM stop switch - Control selection mode switch <CT>/<Off>/Normal/<High speed>. - Winch speed controller. - CT pressure (force) controller. - CT pressure (force) indicator. - Ready for use (RFU) signal lamp

� Steady : Conditions fulfilled

2.4.7.4.1Normal / high speed mode If the normal or high speed mode is selected the winch is operated with the speed control lever on the local panel. High speed mode is allowed if the pressures are in a certain range. This is checked with the following formula:

)4..242..24(583,0)3..241..24(417.0 xPTxPTxPTxPTp −+−= Start hauling:

1. Energize brake (Y24.x.5) and checked if lifted with pressure switch PS24.x.1.



2. Check if high speed is allowed: If p is less than 75 bar and high speed is selected and sensors are healthy, high speed is enabled. If not the winch stays on low speed and an alarm ‘high speed failure’ is generated.

3. If high speed is enabled Y24.x.8 is energized. The proportional amplifier is enabled and the speed is ramped up to controller setpoint with a maximum of 80% in low speed mode en 91% in high speed mode (Y24.x.4). Up and down ramp rates are fixed in the PLC processor.

Start payout:

1. The CT pressure setpoint is set to 250 bar (=100%) (Y24.x.7). 2. After 0.5 sec CT pressure is enabled with solenoid (Y24.x.6) and the brake is lifted (Y24.x.5). The

brake lifted status is checked with pressure switch PS24.x.1. 3. Check if high speed is allowed: If p is less than 75 bar and high speed is selected and sensors

are healthy, high speed is enabled. If not the winch stays on low speed and an alarm ‘high speed failure’ is generated.

4. Solenoid Y24.x.6 is energized and only if high speed is enabled Y24.x.8 is energized as well. Then the proportional amplifier is enabled and the speed is ramped up to controller setpoint with a maximum of 80% in low speed mode en 91% in high speed mode (Y24.x.3). Up and down ramp rates are fixed in the PLC processor.

Stop hauling/payout:

1. The speed is ramped down to zero speed. 2. At zero speed solenoids Y24.x.6/7/8 are de-energized and high speed is disabled. If starting in

the opposite direction start with step 2 of the start sequence. 3. After 0.5 sec at zero speed the brake solenoid is de-energized.

It is allowed to switch over between normal and high speed mode during running of the winch. The selected mode becomes active if the winch has been stopped first and the startup sequence has been executed again.

Conditions barge mooring winch manual mode enable S tart Run Overrule - No EM stop local X - Normal mode selected X - Normal mode selected - High speed selected

X X

X

- Hydraulic cooling pump M0.7 running X - Hydraulic cooling pump M0.8 running X - Barge mooring cooling unit running X - Controller in zero position X

2.4.7.4.2Constant tension mode Constant tension mode becomes active on the rising flank of the CT mode switch. After a trip the CT mode must be activated again with the same switch. The following controls are available:

• The tension setpoint is adjustable with a potentiometer on the local panel. • The speed setpoint is adjusted with the controller on the local panel.

Operation of the winches the time between speed change measurement and changing the output to the solenoids, in particular solenoids Y24.x.1 until Y24.x.4, should not exceed 30 msec. Start CT mode:

1. Solenoids Y24.x.8 and 9 are energized and the CT pressure setpoint is set to 250 bar (=100%) (Y24.x.7).

2. After 0.5 sec CT pressure is enabled with solenoid (Y24.x.6) and the brake is lifted (Y24.x.5). The brake lifted status is checked with pressure switch PS24.x.1.

3. After the brake has been lifted, the CT pressure will be decreased slowly until the CT pressure setpoint. In case of slack wire, the pressure drop across the small motor (PT24.x.1-PT24.x.3) is



less than the CT pressure setpoint, the pressure lowering is done much faster than with a tensioned wire. The IMC system guards that during lowering the winch speed does not exceed the maximum speed of 12 m/min.

4. When the CT pressure has been lowered to the CT setpoint, solenoids Y24.x.1 until 4 are controlled via a curve depending on the actual winch speed as mentioned in the hydraulic ‘Technical specification electric control system’ specifications [4] (copy curves see below). The IMC system guards that the maximum speed of 40 m/min is not exceeded.

5. During CT mode the CT pressure can be adjusted with the CT setpoint potentiometer. The setpoint is ramped to the new setpoint (tup = 5sec; tdwn = 10 sec).

Stop CT mode:

1. The winch is stopped by raising the CT pressure to 100% via a ramp. 2. At maximum pressure setting (100%) all solenoids are de-energized. 3. After 0.5 sec the brake solenoid is de-energized.

If the winch run in CT mode on a high speed for x-time the IMC system assumes that the wire has been broken. The winch will be stopped and a wire break alarm is generated. The alarm resets and the winch is restarted again when restart the CT mode again with the mode selection switch.

conditions barge mooring winch CT mode enable Start Run Overrule - No EM stop local X - Work switch / EM stop enabled X - CT mode selected X - Hydraulic cooling pump M0.7 running X - Hydraulic cooling pump M0.8 running X - No wire break alarm X - On rising flank of CT mode selected X 2.4.8Anchor booms The dredging desk is provided with pushbuttons, one set for every anchor boom, to switch the control of the anchor boom winches on or off. The ‘On’ status is indicated with a signal lamp in the button. 2.4.8.1Guy rope winches

conditions guy winch Start Run Overrule - Anchor boom control DCD switched on X



- No EM stop DCD desk active X - No EM stop local active X - Controller in zero position X

2.4.8.1.1Hoist / pay out commands On a hoist or pay out command the proportional amplifier is enabled and the speed is ramped up to the controller setpoint (Y23.x.1/2) with a high volume displacement. Up and down ramp rates are fixed in the PLC processor. On a zero command the speed will be ramped down to zero first. At zero speed and controller is still in zero position, the proportional amplifier is disabled. Two (2) seconds after start ramping, the winch will be switched to small volume by energizing Y23.x.4. The solenoid will be de-energized around zero setpoint after ramp down. When ramping up in the other direction again after 2 seconds the solenoid will be energized. When the anchor boom is pulled into inboard storage position, it will be locked with a pall. The pall can be released with a pushbutton on the dredging desk. There is no interlock between winch and lifting the pall.

2.4.8.1.2Free payout mode The free payout mode can be selected / deselected with a pushbutton on the dredging desk. A feedback signal lamp in the button indicates that this mode is active. The mode is reset when the manual lever is not in zero position. When the mode is active the free pay out solenoid is energized (Y23.x.3) and 2 seconds later the winch will be switched to small volume by energizing Y23.x.4. Y23.x.4 will be de-energized 1 seconds after Y23.x.3 is de-energized 2.4.8.2Anchor winches The anchor-hoisting winch is used to retrieve the side-anchor with the anchor boom and hoist the anchor on deck.

conditions anchor winch Start Run Overrule - Anchor boom control DCD switched on X - No EM stop DCD desk active X - No EM stop local active X - Controller in zero position X

2.4.8.2.1Hoist / pay out commands On a hoist or pay out command the proportional amplifier is enabled and the speed is ramped up to the controller setpoint (Y22.x.1/2) with a high volume displacement. Up and down ramp rates are fixed in the PLC processor. On a zero command the speed will be ramped down to zero first. At zero speed and controller is still in zero position, the proportional amplifier is disabled. 2 seconds after start ramping, the winch will be switched to small volume by energizing Y22.x.4. The solenoid will be de-energized around zero setpoint after ramp down. When ramping up in the other direction again after 2 seconds the solenoid will be energized.

2.4.8.2.2Free payout mode The free payout mode can be selected / deselected with a pushbutton on the dredging desk. A feedback signal lamp in the button indicates that this mode is active. The mode is reset when the manual lever is not in zero position. Before the freefall mode is accepted the IMC system will test if the anchor is on the ground. First the proportional amplifier is enabled and the anchor will be hoisted with low speed in high volume displacement (Y22.x.1/2). The IMC checks the pressure of the winch during hoisting. If the pressure is too high than the free fall mode is cancelled (anchor not on the ground) and winch stopped. If the pressure is



low the freefall is accepted. The proportional amplifier card is ramped down and disabled. If the free fall was accepted the free pay out solenoid is energized (Y23.x.3) and 2 seconds later the winch will be switched to small volume by energizing Y22.x.4. Y22.x.4 will be de-energized 1 seconds after Y22.x.3 is de-energized. In case the control is switched off (condition failure) the winch is stopped without ramping down.



2.4.9Dredge pumps 2.4.9.1Dredge slice valves The dredge slice valves are manually open / close control by clicking on the valve symbol on the SCADA interface. A detail popup screen appears and provides function keys to open and close the valve. The valves are fully open or closed controlled. The valve will become in a presumed state if the end position is not activated after a timeout delay (about 1.5x the stoke time) and the previous end position is deactivated. In case the previous end state was not deactivated during operation, the system assumes that the valve had not been moved and therefore does not change the valve state. The presumed state becomes also active when the valve looses the end position sensor when stopped. The presumed state will be reset when a new valve command is given (in the same direction is allowed) and the end position corresponding to this command becomes active. If the valve is stopped and the end position becomes active the presumed state will also be reset. If the valve is externally closed during an emergency close action, the valve becomes initially in the presumed open state. If the valve is closed within the stroke time timeout delay, the presumed state will be reset and the close state will be activated. If a timeout occurs during the emergency closing then the valve stays presumed open. The valve will stop 2 seconds after the end sensor becomes activated or after the time out delay.

2.4.9.1.1Bilge alarm pump room On a high bilge alarm of the pump room the dredge pumps are stopped and the dredge hull inlet valves and the bypass valve are closed. The IMC system waits to close the hull valves until all pumps are stopped with a maximum delay time out for about 15 seconds. After this delay the valves are closed after all. The operator is allowed to reopen the valves and to restart the inboard pumps even when the bilge alarm signal is still active.

2.4.9.1.2Valve interlocking Valves provided with an isolating switch are blocked to operate when the isolating switch is in maintenance position. Valve with emergency close facility are blocked to operate when the emergency close button is pressed. 2.4.9.2Dredge pump drives Dredge pumps can be controlled from the following control positions only: - Via the Bridge SCADA view stations. - Speed controlled with manual speed controllers on the Dredging desk.

2.4.9.2.1Dredge pump selections The vessel is equipment with three dredge pumps. DRP1 is the submerge pump on the ladder, DRP 2 and DRP 3 are the inboard pumps. The dredge pumps in use are determined as follows: DRP1: Suction valve inboard pumps is closed (barge loading).

DRP1: No inboard pump selection is made and suction valve inboard pumps is open (shore

discharge).

DRP1 & 2: Selection DRP2 is made and suction valve inboard pumps is open (shore discharge).

DRP1 & 3: Selection DRP3 is made and suction valve inboard pumps is open (shore discharge).

DRP1 & 2 & 3: Selections DRP2 and DRP3 are made and suction valve inboard pumps is open (shore



discharge). Selection of installed inboard pumps must be made on a ‘Dredge pump settings’ page (Header: DRP selection’; F-keys: ‘DRP2’, ‘DRP3’). Selection changes are possible when all dredge pumps are stopped. The selections of inboard dredge pumps will change the pipe configuration drawn around the inboard dredge pumps on the SCADA process pages or made the not selected pump invisible in more principle graphics.

2.4.9.2.2Dredge pump start / stop control The dredge pumps are individual start stop controlled via function keys on the SCADA view stations. The activated function key will blink during the start or stop execution or colours continue when the running respectively stopped status is reached. The running or stopped states is determined out of the drive feedback running signal and the clutch engaged / disengaged feedback signals. In case of a start failure or unexpected stop op the dredge pump the ‘Start’ function key and the pump symbol colours red. Actions during start-up and running:

1. All sub systems and the drive it self are started at the same time. Only the clutch will stay disengaged. The following systems are started: � The ER auxiliaries controlled by the AMS system of all dredge pumps in the dredge path. � The gland systems of all dredge pumps in the dredge path. � The dredge valve flushing pumps. � The frequency converter is started. With this start command the drive auxiliaries will be

started and after that the frequency drive should start up until it is completely powered. Only the thyristor-bridge must stay disabled until the ‘zero controller’ output to the drive is deactivated. The drive should response with a started feedback in this situation.

2. When all systems are running the start function key will colour yellow. If one of the systems fails to start, the start-up will be interrupted and a time out alarm generated. Sub system running signals: � A gland system ‘Running’ feedback is active when: - AND the selected suction and shaft gland pumps are running. - AND the suction and shaft flow are sufficient (>= … m3/h). - AND the flushing valve is open. - AND the back flushing valve is closed.

3. The clutch will be engaged when the operator turns the speed knob on the dredging desk. After

the clutch engaged signal is active the drive will be enabled to run by deactivating the ‘zero controller’ output to the drive and increase the analogue speed setpoint on request of the operator. The start function key is now green coloured. In case the clutch disengage during operation the IMC system goes back to situation 2 disabling the drive and keep the setpoint at zero speed. The function key colours yellow again. The clutch can be engaged by turning the speed knob again.

Actions during stopping:

1. The frequency drive will be stopped. The drive should ramp down and power down. In this situation the running feedback must be deactivated.

2. The clutch will be disengaged. 3. The start request to all external auxiliary system will be removed after deactivation of the drive

running feedback. Every auxiliary system will execute its stop procedure after its own stopping delay.

Output signals: - The E-motor running output to the clutch cabinet becomes active when the start command to the

drive is active or the drive running feedback is active.



- Controller zero output to the drive is active when: � The drive feedback signal is not active. � When the setpoint to the drive is about 0 rpm. � When the clutch is not engaged.

Conditions: The following conditions are used for start and running control of the dredge pumps. Note that the Auxiliary ER systems are lubricating systems around the pump, the Drive ER systems are the auxiliaries of the frequency converter, e-motor and transformer. :

conditions start / stop dredge pump DRPx Start Run Overrule - DRPx Drive ER system Ready for use X A - DRPx Drive ER system No critical failure X - DRP1 Auxiliary ER system Ready for use - DRP1 Auxiliary ER system Running (see note 1)

X X X A

- DRP2 Auxiliary ER system Ready for use - DRP2 Auxiliary ER system Running (see note 1)

X X

X A

- DRP3 Auxiliary ER system Ready for use - DRP3 Auxiliary ER system Running (see note 1)

X X X A

- DRP1 Gland system Ready for use or running (see note 1 & 2) X E - DRP2 Gland system Ready for use or running (see note 1 & 2) X E - DRP3 Gland system Ready for use or running (see note 1 & 2) X E - Flushing pump is Ready for use or running (see note 5) X D - No bilge alarm pump room (see note 6) X - No emergency close dredge hull valves active X - DRP1 Turning gear disengaged (see note 1) X - DRP2 Turning gear disengaged (see note 1) X - DRP3 Turning gear disengaged (see note 1) X - DRPx Isolating switch transformer room in normal position A - DRPx Isolating switch engine room in normal position (DRP2 & 3 only) A - DRPx Isolating switch pump room in normal position (DRP2 & 3 only) X - DRPx Isolating switch in ladder compartment (DRP1 only) A - DRPx Isolating switch on deck / pump room in normal position (DRP1

only) X

- DRP2 Drive not in used for DRP1 pump (DRP2 only) X - DRPx Pump selected (DRP2 & 3 only) X - DRPx No EM stop Bridge active A - DRPx No EM stop ECR active A - DRPx No EM stop engine room active (DRP2 & 3 only) A - DRPx No EM stop pump room active (DRP2 & 3 only) A - DRPx No EM stop ladder machinery compartment active (DRP1 only) A - DRPx No EM stop deck active (DRP1 only) A - DRPx No EM stop clutch active X - DRPx No EM stop on ABB drive panel active A - DRPx No EM stop on drive control panel active A

conditions clutch dredge pump DRPx Start Run Overr ule - DRPx Clutch engage conditions OK (see note 3) X - DRPx Drive Main system running X Notes:

1. The condition indicator on the SCADA diagnostic screens will be invisible when this condition is not required this is the case when the dredge pump is not in the water path.

2. The gland system is ‘Ready for use’ when:



� OR (the conditions of the selected gland pumps are normal (see gland system) AND the gland system is automatic selected.

� OR the selected gland pumps are running AND the suction and shaft flow are sufficient. 3. All other condition signals like the clutch alarm and conditions signals are assumed to be

combined in the ‘Ready for use’ signal. These signals are for diagnostic purposes and alarms only.

4. Overrule water path will only ignore the presumed state of the valves. 5. The flushing system is ready for use when flushing pump conditions are fulfilled and the system is

in automatic mode. 6. Stop command for all dredge pumps. The inboard dredge pumps may be restarted even when

the bilge alarm is still active.

2.4.9.2.3Dredge pump speed control

The dredge pumps are speed controlled with a manual speed controller one for every dredge pump. In automatic mode the speed will be regulated by the Automatic Pump Controller. The automatic mode must be selected with a toggle function key on the SCADA interface for every pump individual (F-key: ‘Auto’).

conditions dredge pump DRPx auto control Start Run Overrule - Communication with ACC controller healthy X - Dredge pump is running X - Manual speed controller not operated X - Quick speed reduce button on key board not pressed X - Dredge pump DRPx speed measurement healthy X - Dredge pump DRPx torque measurement healthy X The pump speed is manually regulated with a pulse encoder speed controller on the dredging desk. If the pump is not running the manual speed setpoint will be kept at minimum speed. If the pump is running the manual setpoint will be increased or decreased with a predefined speed step on every click of the speed controller. The manual speed setpoint will be kept equal to the Automatic Pump Controller output in automatic mode. This method guaranties bump less transfer between manual and automatic mode. The control will be degenerated to manual if the manual controller is operated. Automatic Pump Control is implemented in the Automatic Cutter Control (see paragraph 2.6).

2.4.9.2.4Quick speed reduce command In case a ‘Quick speed reduce’ button on the keyboard is pressed the control down grades to manual and the speed setpoint will be set to 20% of the nominal motor speed. After this action the speed can be increased again with the manual speed controller or activate the automatic mode again. The ‘Quick reduce’ command to the drive stays active until the speed is reached the 20% or after a maximum time out.



2.4.9.2.5DRP 2 drive replace DRP 1 drive In case the DRP 2 drive is used to replace the DRP 1 drive all outputs and feedback signals of DRP 2 will be rerouted to DRP 1 software module. The DRP 2 indications on the SCADA screens have no meaning in this case.


- DRPx Pump running failure alarm. Generated on a running feedback time out or unexpected stop of the pump.

- DRPx Drive ER systems critical failure alarm. - ECR auxiliary system failure alarm. Generated when the system time out or unexpected stop of

the system. - DRPx gland system failure alarm. Generated when a gland pump(s) fails to start or when gland

flow stays below the start up threshold value. - DRPx gland suction flow alarm low. Generated when the dredge pump(s) is started and the flow

is less than a minimum threshold value (… m3/h). - DRPx gland shaft flow alarm low. Generated when the dredge pump(s) is started and the flow is

less than a minimum threshold value (… m3/h). - DRPx gland suction pressure alarm low. Generated when the dredge pump(s) is started and the

pressure is less than a minimum threshold value (… bar). - DRPx gland shaft pressure alarm low. Generated when the dredge pump(s) is started and the

pressure is less than a minimum threshold value (… bar). Time out stop alarms stays active until the next start attempt. IMC system sends the clutch alarms via a communication link to the ECR alarm system (see soft IO alarm list [2]). Alarms can be reset locally on the clutch cabinet or remotely via the ECR SCADA view stations only. 2.4.9.3Gland system Every dredge pump has its own gland system. A gland system and sub parts can be controlled from the following control positions only: - Via the Bridge SCADA view stations on ‘Gland system’ screens. - Via the ECR SCADA view stations on ‘Gland system’ screens.

A gland system can be selected for Manual or Automatic control with function keys on the SCADA system (Header: ‘Gland DRPx’; F-keys: ‘Manual’, ‘Auto’). Automatic control can be selected when the following conditions are fulfilled. The system falls back to manual mode on failure of one of the conditions:

conditions automatic selection Start Run Overrule - Both selected gland pumps conditions normal (see below) X - Stand-by pump not running X - No manual operation pumps or valves X



2.4.9.3.1Standby pump selection Every gland system consists of three speed controlled pumps. The Mid pump (GP2) is a spare pump to replace the suction pump (GP3) or the shaft pump (GP1). The spare pump must be selected prior to be used by the system and can be used for one purpose only. The pumps discharge valves are manually operated and must be checked first before starting the system. The pumps in use must be selected with function keys on the SCADA system (Header: ‘Standby DRP x’; F-keys: ‘Shaft, ‘Suction’). Selection changes are possible when all three pumps are stopped.

2.4.9.3.2Manual controls In Manual mode the system must be started, stopped and controlled by individual actions of the operator. Manual pump start / stop control is available by clicking on the pump symbol on the SCADA interface. A detail popup screen appears and provides function keys to start and stop the pump and for manual speed setpoint changes. A gland pump has the following individual conditions:

conditions gland pumps Start Run Overrule - IMC selected X - Ready for use X Manual flushing valve open / close control is available by clicking on the valve symbol on the SCADA interface. A detail popup screen appears and provides function keys to open and close the valve.

2.4.9.3.3Automatic controls In Automatic mode the IMC system will start, stop and control the gland system depending on the following requests:

- On start-up request of one of the dredge pumps in the current dredge path. - When the dredge pump is not completely stopped (abs(speed) >= 8 rpm).

An option is available to stop with or without executing flushing the settling pipe (back flushing) in automatic mode. Selection On/Off via the SCADA interface. Selection is always possible. Actions on a start-up request:

1. Check if the Flushing valve is open and the back flushing valve closed. If not the valves will be set in the right position.

2. Start of the selected gland pumps. 3. Automatic control of suction and shaft flow. Precautions are made to prevent overshoots during

the start-up. The flow setpoints are fixed values. A minimum speed setpoint guaranties a minimum pump speed.



If a gland flow request become active again during the back flush cycle, the back flush cycle will be interrupted and the gland system becomes operational as soon as possible. Actions when no start-up request is active and option ‘Back flushing Off’:

1. The pumps will stop after an individual post-running time delay. Time settings to be entered on the SCADA system. The post running timers are also active during manual control.

Actions when no start-up request is active and option ‘Back flushing On’:

1. After a stop delay the back flush valve is opened and the flushing valve closed in such way that there is always a water path.

2. After a ‘Flushing time’ delay the flushing valve will be opened and the back flush valve closed in such way that there is always a water path.

3. After a delay both gland pumps are stopped. Time settings to be entered on the SCADA system.

2.4.9.3.4Alarms See dredge pump alarms paragraph 2.4.9.2.6. 2.4.9.4Dredge valves flushing system The dredge valve flushing system can be controlled from the following positions: - Via the Bridge SCADA view stations on ‘Flushing system’ screens.

The system can be selected in Manual or Automatic mode with function keys on the SCADA system (Header: ‘Valve Flushing’; F-keys: ‘Manual’, ‘Auto’). The selection is always allowed. On a start command of the pump, first the discharge valve will be closed if not already closed before starting the pump. After the pump running feedback is active a few seconds later the valve will be opened. The valve will be stopped a few seconds after the pump has stopped. If the valve fails the start of the pump will be interrupted.

2.4.9.4.1Manual controls In Manual mode the system must be started, stopped and controlled by individual actions of the operator. Manual pump start / stop control is available by clicking on the pump symbol on the SCADA interface. A detail popup screen appears and provides function keys to start and stop the pump. The pump has the following individual conditions:

conditions valve flushing pump Start Run Overrule



- IMC selected X - Ready for use X Manual flushing valve open / close control is available by clicking on the valve symbol on the SCADA interface. A detail popup screen appears and provides function keys to open and close the valve.

2.4.9.4.2Automatic controls In Automatic mode the IMC system will start, stop and control the flushing system depending on the following requests:

- On start-up request of one of the dredge pumps. - When one of the dredge valves is manually operated.

Actions on a start-up request:

- The flushing pump will be started. - The flushing pump discharge valves to the barge loading arms are open / close controlled

depending of the dredge pump selection is in ‘Barge loading’ mode. - The discharge valve to the Shore Discharge Valve is open / closed controlled depending of the

dredge pump selection is in ‘Shore discharge’ mode. Actions if no start-up request is active:

- The flushing pump will be stopped after a predefined post running time delay. The post running timer is also active in manual mode.

In case the pump is manually operated the system will be automatically downgraded to manual mode. It is allowed to operate the discharge valves manually during operation without down grading to manual.


- Pump running failure alarm. Generated on a running feedback time out or unexpected stop of the pump.

- Low and high pressure alarms. 2.4.9.5Production measuring The vessel is provided with three production measuring pipes, one in each barge loading installation and one in the discharge pipeline of DRP3. Every production measuring pipes provides the velocity and density of the mixture. The IMC system calculates the production in situ out in t/h and m3/h of these signals. Density setpoints of sea water and situ have to be entered on the SCADA system. To protect the scintillation counter a production pipe is provided with a shutter. The shutters of the barge loading installation will be opened when dredge pump DRP1 is running and the barge loading valve to the installation is opened. The shutter of DRP3 is opened when one of the dredge pumps is running and the suction inboard dredge pumps valve is open. A shutter closes after a time delay when the dredge pump or pumps has stopped. For maintenance purposes the shutter can be opened via the SCADA interface with a maximum test time of about 15 minutes. The production pipe must be filled with water to give reliable signals. To suppress unreliable signals a production pipe is provided with an empty pipe signal. In this case the velocity will be forced to 0 m/s and the density to 1.0 t/m3 until the empty pipe signal has recovered. The dredging desk is provided with a yield indicator. The velocity / density signals to the desk indicator is automatically selected depending on the dredge pump mode ‘Shore discharge’ or ‘Barge loading’. In the last case the open Barge loading valve states switches the indicator between PS and SB. The actual selection is indicated with signal lamps next to the yield indicator.



Alarms: The following alarms will be implemented in the IMC system:

- Shutter open/close failure alarm. 2.4.9.6Discharge pipeline The discharge pipeline can be defined with the following segment length and diameter setpoints:

- Onboard pipeline shore discharge. - Floating pipeline. - Submerged pipeline. - Land pipeline.

The IMC system will calculate a nominal diameter and length of the pipeline equal to the diameter of the production measuring pipe. The parameters can be changed during the pump process. Setpoints must be entered via the SCADA interface. The system determines the following values:

- Maximum discharge pipe diameter [m] - Normalised discharge pipe length [m] - Maximum average density in pipeline - Calculated actual velocity setpoint [m/s]

The maximum average density in the pipeline will be used to increase the velocity setpoint to compensate the critical velocity shifting (see pump control paragraph 2.5.2). The maximum average density in the pipeline is calculated as follows. The pipeline length is divided in fixed parts. The density for every element is calculated as function of the velocity and time. The element with the highest density is the maximum average density. The velocity of the discharge pipeline can be corrected with a gain factor. The calibration procedure is as follows:

1. Fill in the discharge pipeline parameters (length and diameter) as accurate as possible. 2. Press the ‘Enable’ function key followed by the ‘Reset’ function key to set the gain factor at 1.0. 3. Start pumping water through the pipeline with a constant velocity. 4. Start the calibration timer with the ‘Start’ function key as soon as the water colouring enters the

entrance of the pumping circuit. 5. Stop the calibration timer with the ‘Stop’ function key as soon as the water colouring appears at

the end of the pumping circuit. The IMC compares the measured velocity and the calculated average velocity and determines a new gain factor.

6. Enter the new gain factor by pressing the ‘Enable’ function key followed by ‘CALIBR’ function key. 2.4.9.7Vacuum relief valve

The Vacuum Relief Valve is used to avoid a high vacuum at the inlet side of the submerged dredge pump. The valve can be operated manually or automatically. Selection auto / manual to be made with function keys on the SCADA interface. The selection is unconditional. When the valve is manual operated, the automatic mode degenerates to manual.

Manual control:



On manual, the valve open / close control is available by clicking on the valve symbol on the SCADA interface. A detail popup screen appears and provides function keys to open and close the valve. Additionally the dredging desk is provided with pushbuttons for manual open / close control of the valve as well. A signal lamp in the open button indicates the closed state of the valve. Automatic control: On Automatic the valve is open / close controlled based on the inlet pressure (vacuum) of dredge pump DRP1. When the vacuum is higher then the pre-warning limit, the vacuum bar graph will color red. The valve is open/close controlled with one solenoid. The valve closed detection is done with a pressure switch. In case the pressure is high the valve is assumed to be closed.



2.5Dredge Profile Monitor (DPM) The main function of the DPM is to calculate depth of cutter and the position of the dredger. The implementation will be the standard IHC DPM software running on a separate server and ActiveX implementations on the SCADA screens (see DPM specifications [5]). Side view: Visualization of the profile together with the position of the cutter in the cut is shown. The centerline, EOS left and EOS right are shown as vertical lines. Top view: The position of the cutter during the last sing and its present position are shown on this page. The active line used for the profile is also shown on this page. 2.5.1Sensors The DPM determines the cutter position in three dimensional directions out of the following sensors:

- Ladder angle sensor. - Ladder pay out wire length as back-up for the ladder angle sensor. - Trunnion depth (draught) sensor. - Draught transmitter Fore and Aft. - Trim and list sensors. - Tide signal. - Spud carrier position sensor. - Two gyro NMEA serial connections (connected to DPM/ACC computer). - Two (D)GPS NMEA serial connections (connected to DPM/ACC computer).

2.5.1.1Ladder angle The ladder angle is measured with a pendulum sensor or as back-up determined out of the ladder wire lengths. Selection to be made on the SCADA system (F-keys: ‘Pendul’, ‘Wire’). Depth calibration: The ladder position is important in determining the depth at which effective dredging will take place. The following calibration methods are provided Calibration with function keys ‘Enable’ and ‘Calibr’. Method selections with function keys ‘WaterL’, ‘Level’, ‘Fixed’:

- Waterline . In order to calibrate depth measurement, the teeth of the cutter just be visible above the waterline.

- Horizontal . The ladder must be exactly in horizontal position before calibration of the sensor. - Dedicated position . Calibration in fixed pre-defined position like when the ladder is in his

secured position. Back-up depth calibration: The back-up depth is calculated with the pay-out wire lengths of the ladder winches. To calibrate the emergency depth, place the ladder in his secured position and then calibrate (see also 2.4.3.1). 2.5.1.2Draught, Trim and List Trim selections:

- Manual entered value on the SCADA system. - Analog measured with an angle transmitter. - Calculated by the DPM. The DPM is using at least 2 draught transmitters to calculate the trim.

List selections:

- Manual entered value on the SCADA system. - Analog measured with an angle transmitter.

The transversal distances of the sensors are too small to use the DPM calculation.



Depth selections: - Manual entered value on the SCADA system. - Analog measured with the trunnion depth sensor. - Calculated by the DPM.

The draught sensor are visualized in bar, offset and depth for each transmitter. Every transmitter can be inhibited. The average depth and the depth at the markers and at the trunnion are calculated when all sensors are available. Setting is available for entering the density of the sea water. Trunnion position ‘Low’ / ‘High’ to be selected on the SCADA system. 2.5.1.3Tide correction The tide input can be selected from:

- Manual input on the SCADA system - Received from Survey system.

2.5.1.4Gyro The gyro signal can be selected out of the following signals. Selections via function keys on the SCADA system:

- Received NMEA signal from gyro 1. - Received NMEA signal from gyro 2. - Received from survey system.

2.5.1.5(D)GPS The (D)GPS signal can be selected out of the following signals. Selections via function keys on the SCADA system:

- Manual input on the SCADA system - Received NMEA signal from Navigation GPS. - Received NMEA signal from Survey GPS.

The following position modes are available:

1. Sailing . Is active when two spuds are off the ground and the GPS quality=1. 2. Manual + spud + gyro . This mode is active when manual GPS data is selected or when the

selected GPS has failed. The last know coordinates will be used when entered this mode and will be further estimated on hand of the spud position and spud change signals. The position will be initialised when the manual position settings are changed.

3. a) DGPS + spud + gyro . This mode is active when the Navigation GPS is selected (quality=2). b) High quality DGPS . This mode is active when the Survey GPS is selected (quality=4).

2.5.2Geometry settings and options The following settings and options are available via the SCADA interface:

Base line: - Base line selection from ‘Survey’ / ‘Manual’ - Base line manual begin and end position to be entered in Easting and Northing coordinates and

start DAL position. - Dredge direction ‘Incrementing’ / ‘Decrementing’. Design profile: - Design profile selection from ‘Survey’ / ‘Manual’. - Design pattern selection ‘Box cut’ / ‘Follow slope’. - One (1) manual design profile of seven (7) points to be entered in DOL and Depth and the

number of active points. - Break in option ‘On’ / ‘Off’ - Break in settings of two (2) points to be entered in DAL and Depth. - Over depth selection ‘Fixed’ / ‘Divided’ / ‘Off’. - Over depth settings over depth and over width.



Depth and End of swing (EOS): - End of swing determination ‘Manual’ / ‘Design profile’. - End of swing manual positions on PS and SB and approach end of swing settings. - Cutting width point selection:

� Actual cutting point position. � Center top point of the cutter. � The side of the cutter in swinging direction.

- Cutting depth point selection: � Actual cutting point position. � Center top point of the cutter. � The side of the cutter in swinging direction.

Layer pattern: - Layer pattern selection ‘Basic’ / ‘Horizontal’ / ‘Vertical’ pattern. - Layer pattern data of maximal seven (7) layers to be entered in Depth and the number of active

layers. - Clean up cycle selection ‘On’ / ‘Off’. - Clean up cycle over depth setting during clean up.

2.5.3Anchor positioning settings and options The DPM estimates the position of the anchors and provides warning alarms in case an anchor is moving in or is out of the anchoring area. The following position estimations are available:

- Manual . The position of the anchor must be entered manually in DAL and DOL coordinates. - Watch dragging . Two (2) settings per anchor are available to set the initial DAL and DOL

position of the anchor. The position is initiated on entering a setting. After that the DPM software will optimize the position and generates necessary alarms during swinging.

- Auto measure . The same as watch dragging only the initial position will be the position of the boom tip. The boom angle and a triggering anchor dropping will be estimated in the PLC software.

The estimation software uses the side winch wire lengths. This length is added with an ‘Anchor + dragging length’ option.



2.5.4Cutter selection The IMC system provides seven (7) predefined cutters. However more cutters are possible because the IMC system saves the cutter data in an ini-file. This data can be loaded in one of the predefined cutters. The actual cutter must be selected out of the predefined cutters. The IMC system provides multiple teeth selections. The teeth type defines an offset on the cutter radius. The following data are available to define the cutter:

Cutter selection: - Cutter Type name. More cutters of the same type are possible. They are divided with a user

cutter number. - User cutter number. Teeth selection: - Teeth Type name. - Radius offset. Cutter data per cutter type: - The length between the ladder end and the front of the cutter centre. - The number of blades. - The position of maximum eighty (80) teeth positions defined as a length and radius entries per

teeth. - Teeth offset



2.6Automatic Cutter Control (ACC) 2.6.1Product options The automatic cutter controller compromises the following control functions. Product Options List:

Selected (Yes/No)

DPM options Logging and Replay (see §4.1) No Anchor position estimator (see §4.2) Yes ACC options Swing motion control (speed control mode, see §4.3.1) Yes Swing motion control (torque control mode, see §4.3.2) Yes Ladder motion control (see §4.3.3) Yes Carrier motion control (see §4.3.4) Yes Carrier advance correction (see §4.3.5) Yes Basic pattern coordination (see §4.3.6) Yes Horizontal layer pattern coordination (see §4.3.7) Yes Vertical layer pattern coordination (see §4.3.8) Yes Cutter speed optimizer (see §4.3.9) Yes Cutter load control (see §4.4.1) Yes Mixture density control (see §4.4.2) Yes Vacuum control (see §4.4.3) Yes Intermediate pressure control (see §4.4.4) Yes Average mixture density control (see §4.4.5) Yes Spud carrier force control (see §4.4.6) Yes Vacuum relief valve control (see §4.4.7) Yes Automatic pump control (see §4.5) Yes Automatic pump control (extended booster version, see §4.6) No Mixture velocity control (AI control, see §4.7)* Yes * only in combination with average density controller and pump controller

For more ACC specifications see [5].



2.6.2Control settings and options The following settings and options are available via the SCADA interface:

Side winches: - Pre tension selection ‘Slack’ / ‘Medium’ / ‘Stiff’. - Under cutting only (fast return) selection ‘On’ / ‘Off’. - Under cutting only settings to lift and retract cutter during fast swing back. - Side winch control during auto step ‘Not follow EOS’ / ‘Follow EOS’. - Side winch control during follow EOC auto step setting ‘Low’ / ‘Medium’ / ‘High’. - Reduce speed if cutter below profile ‘On’ / ‘Off’. - Reduce speed if cutter below profile setting distance below where the swing speed completely

stops. - Acceleration speed setting. - Deceleration speed setting.

Ladder winches: - Brake control ‘Always off’ / ‘Allow on’. - Brake control on hysteresis setting. - Lift cutter before horizontal stepping ‘On’ / ‘Off’. - Lift cutter before horizontal stepping setting. - Follow profile accuracy setting.

Spud carrier: - Selection ‘Auto step’ / ‘Auto pos’. In auto position mode the carrier will be corrected during the

complete swing and in auto step mode only when horizontal stepping is required. - In auto position mode selection ‘Constant actual radius’ / ‘Constant max radius’ / ‘Straight line’.

For the accuracy of these options it is recommended that the spud carrier controller handles the carrier speed feed forward signal from the ACC controller.



2.7Human Machine Interface (HMI) 2.7.1Control panels See the confirmation of order. 2.7.2Operator stations

2.7.2.1Locations DCD - 4 operator stations with TFT screen and dedicated operator keyboard CNC - 1 operator station with TFT screen and dedicated operator keyboard BCD PS - 1 operator station with TFT screen and dedicated operator keyboard BCD SB - 1 operator station with TFT screen and dedicated operator keyboard ECR - 2 operator stations with TFT screen, qwerty keyboard and mouse Office - 1 operator station with TFT screen, qwerty keyboard and mouse, connected by a KVM

switch with the SCADA server 1, office PC. Cabin - 1 operator station with TFT screen, qwerty keyboard and mouse

2.7.2.2Dedicated operator keyboard Seven (7) operator stations on the bridge will have the IHC KPTB01 dedicated operator keyboard installed. (4 on DCD, 2 on BCD and 1 on CNC) The dedicated operator keyboards will provide function key push buttons and a tracker ball which will be used to operate the SCADA graphic pages. The dedicated operator keyboard will have 16 programmable function keys, which can be freely programmed for easy switching of graphic pages. The dedicated keyboard provides the following keys: Key(s)

Functionality

F1 until F12 Function keys for direct and quick operation. These keys are related with the function keys at the bottom of the currently shown graphic. Pressing a function key will execute the corresponding action displayed on the screen. In case a Default Object Window appears as an overlay over the function key area, the function keys are assigned to this window. The executed commands are described in paragraph 2.8.4.

Numerical pad For entering setpoint values, page numbers, etc. Keys as Enter, Backspace, Escape, Tab, +, - are included.

a matrix of 4 by 4 special keys for directly selecting graphical pages

See attachment A

2.7.2.3Accounts Dredge operator Account:

- All Dredge operator functionality will be available and accessible on all operator stations when logged in as dredge account.

- All stations on the bridge will automatically login using the Dredge account. ECR operator Account:

- All ECR operator functionality will be available and accessible on all operator stations when logged in as ECR account.

- All stations in the ECR will automatically login using the ECR account. Administrator Account:



- All Administrative functionality will be available and accessible on all operator stations when logged in as Cimplicity Administrator account. Administrative functionality includes entering profiles and layers (graphics 264, 265 and 266).

- The station in the office will automatically login using the Cimplicity Administrator account. Viewer Account:

- View possibilities only. - All not mentioned station here above will automatically login using the Viewer account.

2.7.3Menu structure The IMC system provides the following kinds of graphics: - Index graphics:

These graphics are mentioned to navigate between graphics on an index base. All graphics can be opened by a graphic number or touching the index text on the monitor or by clicking with the left mouse button on the index text.

- Process graphics: These graphics are mention for normal process control. Generally those graphics provides a layout of a process part and a function key area for fast operator actions.

- Diagnostic graphics: These graphics gives the operator detailed information, as working or starting conditions, about the certain control function on the process graphics.

- Control graphics: These graphics are mentioned to regulate and to tune the dredging control functions provided by the system.

- Calibration graphics: These graphics are destining for calibration of special I/O signals connected to the IMC system.

- Alarm overview window (page 999). This is a full screen overview window with scroll bars included. The previous window appears after closing this window.

2.7.4Colour Definitions The colour definitions, process symbols and page layouts to be used within the SCADA system for the ‘Cutters JDN 8064/8065/8066/8067’ project will be based on the ‘Kearius / Hondius’ project. All graphic pages will be based on a 1032 x 826 screen size and will have a [Black] background. The colour and symbol definitions will be discussed in the following paragraphs.

2.7.4.1Dredge valves and Jet valves with limit swit ches The valve symbol consists of two opposite triangles. For both sides of the valve a colour animation is configured to indicate several different states. One side has three different colours; the other side has two different colours configured. The state of the valve depends on the two limit-switches and the last given command. - Really opened:

the valve is opened, i.e. the valve has moved on an “open” command and the limit switch “opened” is reached during the control period. The valve will be coloured: “Blue ”

- Really closed:

the valve is closed, i.e. the valve has moved on a “close” command and the limit switch “closed” is reached during the control period. The valve will be coloured: “Grey”

- Presumed opened:

the valve has moved on an “open” command but the limit switch “opened” is not reached during the control period or the limit switch “opened” failed while a close command was not given. The valve is then coloured: “Red”



- Presumed closed: the valve has moved on a “close” command but the limit switch “closed” is not reached during the control period or the limit switch “closed” failed while an open command was not given. The valve is then coloured: Green ”

- Opening:

the valve is moving from the closed, presumed closed or presumed opened position to the opened position. The valve will be blinking, depending on its previous closed state (really or presumed). � From closed to opened position: The valve is coloured “Grey” blinking. � From presumed close to opened position: The valve is coloured “Green ” and blinking � From presumed open to opened position: The valve is coloured “Red” and blinking

- Closing:

the valve is moving from opened, presumed opened or presumed closed position to closed position. The valve will be blinking, depending on its previous opened state (really or presumed). � From opened position to closed position: The valve is coloured “Blue ” and blinking. � From presumed open to closed position: The valve is coloured “Red” and blinking. � From presumed close position to closed position: The valve is coloured “Green ” and blinking.

If a valve is really opened and an “open” command is given, nothing will happen. If the valve is presumed opened and an open command is given, this open command will become active. The same is true for a closed valve and a “close” command. The status will be "presumed” till the valve has moved correctly to a new state or when the operator has reset the presumed status. A manual reset function is provided on a SCADA page, this will reset all valves and display the actual position of the valves.

2.7.4.2Valves with analogue position indication If the valve position indicates less than 5%, it is assumed that the valve is really closed (“Grey” coloured). If the valve position indicates more than 95%, it is assumed that the valve is really opened (“Blue ” coloured). If the valve position is in-between those points, then it is coloured ”light blue” If the valve is moving from the close position to the open position the valve will be coloured “Grey” and blinking. If the valve is moving from the open position to the close position the valve will be coloured “Blue ” and blinking. If the valve is moving from the in between position to the open or close position the valve will be coloured: “Light Blue ”

2.7.4.3Manual controlled valves

Manualvalve

Checkvalve

Valves on the graphics coloured “White ”, are manual controlled valves. The valve has no limit switches connected to the IMC system. The purpose is only to indicate that there is a valve in the line. The system handles check valves as manual valves. Its symbol consists of a triangle and a line. The triangle point in the flow direction and the line in the opposite direction.

2.7.4.4Hydraulic, Gland, Flushing and dredge pumps The generic pump symbol consists of an outer shape and an inner triangle.



Round background - Gray : Pump is ready for use and not in auto. - Yellow : Pump is not ready for use. - Green : Pump is ready for use and in auto. - Red : Pump is tripped by a failure. Triangle foreground - Black : pump not running. - Blue : pump is running. The pump symbol contains also two textual indications: - - SWB : This text will appear on the right below and indicates that the pump is not IMC selected, but

on the switch board. - - M : This text will appear on the left above and indicates that the pump is selected as master

pump in case of master/slave selection.

2.7.4.5Other symbols For the other symbols the following colour definitions are used: - “Grey ” : No operation - “Green ” : Running operation - “Red” : Failed

2.7.4.6Bar graphs

Bargraphs consists of a vertical scale in a suitable refinement and sizable green coloured rectangles. A numerical value of the process value is located just below the bargraph and is coloured yellow . A movable triangle along the bargraph is the graphical presentation of a setpoint value. If a numerical value of the setpoint is required, it will be positioned under the process value. The setpoint colouring is as follows: - Red : control is on (auto) - Gray : control is off (manual) Limit values are displayed as red coloured lines along the bargraph.



2.7.4.7Function keys A function key, on a normal IHCS SCADA page, consists of two parts. The upper part indicates if all conditions are met regarding the action of the key. When the upper part indicates that not all conditions are met, the user can navigate to a detailed graphic page showing all the conditions by clicking on the upper part with the left mouse button. The upper part indicates the availability of the object - “Yellow ” : Start conditions are not met - “Green ” : Start conditions are met - “Red Line ” : Conditions overruled The operator executes (if a command by operating the (lower part) function keys on the keyboard or clicking with the left mouse button on the function key drawn on the screen or touching the function key on the monitor. The status or result of the command execution is displayed by colouring of the function key presentation on the screen. The lower part indicates the status of the object. - “Grey ” : Object is not active or no active status defined - “Green ” : Object is active - “Blinking ” : Object is busy (moving, starting, stopping) - “Yellow ” : System started but with no speed - “Red” : The sub-system has failed or gone to the alarm state

2.7.4.8Text The text font is defined as ARIAL 14 points for variable information and ARIAL 14 points for static information such as names, engineering units etc.

2.7.4.9Setpoints

Setpoint values are indicated as a value with an ”Magenta” rectangle around it. When a setpoint area is selected with the mouse pointer, a new setpoint value can be entered.

2.7.4.10Variables

The analogue values are presented with text colour “yellow” against the “black” background.

2.7.4.11Object status The various objects are coloured in different colours “green ” if some statuses are active, and “grey ” if they are not. The dark red colour indicates that data-connections are lost to server or PLC.

2.7.4.12Manual control of objects

2.7.4.12.1Manual control of digital valves When the digital valve symbol is selected, the following pop-up window will be shown:

The pop-up window provides the following functionalities:



- Function keys defined as: F1 Open command F2 Close command F3 Stop command

- A black frame with yellow fore ground text indicating the selected object status. - An information frame with providing the system tag name and description of the selected object. The valve pop-up window will appear in front of the regular function key bar at a graphic page after a valve is selected with the mouse. It will disappear automatically when the mouse pointer is moved out of the valve pop-up window area. The following colour definitions are used: Outer shape (shape around the black “status” area) - “Grey ” : Start conditions are not met - “Green ” : Start conditions are met The colouring of the function keys is the same as the lower part of a function key.

2.7.4.12.2Manual control of analogue valves When the analogue valve symbol is selected, the following pop-up window will be shown:

The pop-up window provides the following functionalities: - Open/close control:

F1 Open command, opens the valve completely F2 Close command, closes the valve completely F3 Stop command, stops previous action Setpoint control (if required): - - Degrease setpoint with a step of 20% - Degrease setpoint with a step of 10% + Increase setpoint with a step of 10% + + Increase setpoint with a step of 20% F12 Close sub window

- A black frame with yellow fore ground text indicating the selected object status. - A black frame with purple outer line and yellow fore ground text for entering a set-point position. - A black frame with yellow fore ground text indicating the actual valve position.. - An information frame with providing the system tag name and description of the selected object. Setpoint values are clipped to 0% of 100%. The valve pop-up window will appear in front of the regular function key bar at a graphic page after a valve is selected with the mouse. It will disappear automatically when the mouse pointer is moved out of the valve pop-up window area. The following colour definitions are used: Outer shape (shape around the black “status” area) - “Grey ” : Start conditions are not met



- “Green ” : Start conditions are met - “Red Line ” : Inhibit or Stand-in functionality active

2.7.4.12.3Manual control of pumps When the pump symbol is selected, the following pop-up window will be shown:

The pop-up window provides the following functionalities: - Function keys defined as:

Start / stop control: F1 Start command F2 Stop command F3 Master command (e.g. flush and key pumps) F4 Auto command

- A black frame with yellow fore ground text indicating the selected object status. - An information frame with providing the system tag name and description of the selected object. The pump pop-up window will appear in front of the regular function key bar at a graphic page after a pump symbol is selected with the mouse. It will disappear automatically when the mouse pointer is moved out of the pump pop-up window area.

2.7.4.12.4Diagnostic pages The conditions for each system are implemented in the diagnostic pages and will be displayed like example below:

- Left column = Overrule buttons and indicators

� Red = Overrule active � A = Overrule can only be activated in the AMCS system (indication) � D = Overrule can be activated in IMC by Dredge user � E = Overrule can be activated in IMC by ECR user � When there is no A,D or E, both IMC users can activate the overrule

- Middle column = descriptions and indications � Indications in one field next to each other are AND conditions � Indications in one field below each other are OR conditions

- Right columns = start and stop conditions � Indications below START are start conditions � Indications below RUN are running conditions � Indicators in between are start and Running condition



2.7.5Pages The IMC system provides the following kinds of graphics: - Index graphics:

These graphics are mentioned to navigate between graphics on an index base. All graphics can be opened by touching the index text on the monitor or by clicking with the left mouse button on the index text.

- Process graphics: These graphics are mention for normal process control. Generally those graphics provides a layout of a process part and a function key area for fast operator actions.

- Diagnostic graphics: These graphics gives the operator detailed information, as working or starting conditions, about the certain control function on the process graphics. The conditions as mentioned in this specification will be presented in a graphical way as mentioned in paragraph 2.7.4.12.4 on these pages.

- Settings graphics: These graphics provides setpoints and limit factors changeable by the operator.

- Alarm graphics: These graphics will give the operator an overview of actual and accepted alarms of a system.

All graphic pages will be equipped with a standard page header.

In this page header the following items will be available:

• Time and date – Actual time and date. • Filename information – Filename of the graphic page. • Mini alarm window – Shows the last active alarm message. • Buttons – To navigate to the ‘Alarm group overview’ page. • Alarm Group information.



2.7.5.1Index graphics This section contains the following graphics: [000] – Start screen (shows picture of ship, software revisions and PC/project/user name) [001] – Main menu (Index and navigation to all pages) [240] – Calibration menu (Index and navigation to calibration pages) [300] – Diagnostics index (navigation to these pages)

2.7.5.2Process graphics This section contains the following graphics: [100] – General navigation [101] – Dredge profile [105] – Swing memory [106] – Side winches [107] – Spud system [108] – Cutter [109] – Ladder winches [113] – Swing graph [114] – DPM top view [115] – Anchor handling [122] – Dredge process & barge loading [124] – Barge loading [151] – Swing process [152] – Dredge process [172] – Spud system [173] – Spud locking pins [174] – Spud tilting [104] – Hydraulic pumps [111] – Flushing system & Gland system DRP 1 [112] – Gland system DRP 2 & 3 [131] – Pressure hydraulics [132] – Pressure liquids [140] – Controllers

2.7.5.3Diagnostic graphics This section contains the following graphics: [301] – DRP1 system diagnostics [302] – DRP2 system diagnostics [303] – DRP3 system diagnostics [304] – Ladder winch system diagnostics [306] – Side winch system diagnostics [308] – Cutter system diagnostics [315] – Barge loading diagnostics [316] – Ladder shaft cylinders diagnostics [317] – Spud hoisting winch diagnostics [320] – Spud shifting winch diagnostics [321] – Spud locking diagnostics [322] – Spud tilting diagnostics [325] – Anchor boom winch diagnostics [326] – Hydraulic power pack diagnostics [327] – Hydraulic consumers diagnostics [328] – Dredge valve diagnostics



[330] – Cutter head loosening diagnostics [333] – Barge mooring winches diagnostices [350] – Process values [381] – Valve states [401] – History trend page 1 [402] – History trend page 2 [403] – History trend page 3 [404] – History trend page 4 [267] – Survey communication [268] – System diagnostics [269] – ControlNet diagnostics

2.7.5.4Settings graphics This section contains the following graphics: Calibration: [241] – Cutter depth calibration [242] – Trunnion depth calibration [243] – Spud carrier communication diagnostics [244] – Velocity calibration [245] – Process settings [247] – Draught, trim and list [248] – Wire length calibration [249] – Wire length calibration Parameters and settings: [251] – Vessel dimensions [252] – Automatic control & keyboard settings [253] – Cutter settings & selection [254] – Spud carrier settings [255] – Side winches controller settings [258] – Vacuum relief valve settings [259] – Cutter controller settings [260] – Dredge process settings [261] – Gland pump settings [262] – Flushing system settings [264] – Dredge profiles [265] – Layer settings [266] – Layer graphic

2.7.5.5Alarm graphics This section contains the following graphics: [900] – Alarm page (Displays alarms mentioned in this FS) 2.7.6AMCS Alarm handling Alarms on the AMCS SCADA system will be shown on the ‘Alarm group overview’ page. The latest alarm line is always visible in the Alarm Status bar on every AMCS graphic page. The Alarm Status bar is part of the standard page header which is described in paragraph 2.7.5 Pages.

2.8Dredge databases Data logging is one of the standard features of Cimplicity. The SQL server is used to store and maintain this data. The following three different types off data log tables are provided by Cimplicity for the ‘Cutters JDN 8064/8065/8066/8067’ project: - Default data tables



- User defined data tables (used for trending) - Trip report data tables For data logging purposes the office operator station will be equipped with Microsoft SQL server software. All logging will be carried out by the Cimplicity servers and stored in data tables located on the office operator station. Maintenance and database clean up actions will be carried out by using scripting and SQL agent jobs inside the SQL server program.

2.8.1Default data tables There are four default data tables available in Cimplicity: - ALARM_LOG: Used to log point data alarm each time an alarm occurs. - EVENT_LOG: Used to point data event each time an event occurs. - DATA_LOG: Used to log point data individually. There fore the property “log data” have to be

checked. - EM_LOG: Used to keep a record of event management event actions. When the event triggers

actions that have been selected to be logged, the Event Manager sends a message to the logger to log.

Logged data in above tables is stored for three days. The data will be kept saved for three days. Saved data is automatically deleted when it is three days old.

2.8.2User defined data tables With the SCADA program, custom data tables can be created to log user specified data. For the ‘Cutters JDN 8064/8065/8066/8067’ project, the following additional table will be created:

• DREDGE_LOG_T: Used to log dredge related points. Maximum columns (logged points) for a table is 255 and also depending of the length of the logged points descriptions. The analogue points will be logged every three seconds. The data will be kept saved for three days. Saved data is automatically deleted when it is three days old.

2.8.3Reporting Not applicable.

2.9Infrastructure 2.9.1PLC network The PLC network will be based on a redundant ControlNet network. It is split in a SCADA net and a PLC net and will contain the following hardware platforms (Nodes): SCADA net:

• DRGCLX01 – ControlLogix Chassis containing Bridge Main processor and ControlNet modules. • SCADA Server 1 – SCADA Server station containing 1784-PCIC ControlNet Interface module. • SCADA Server 2 – SCADA Server station containing 1784-PCIC ControlNet Interface module. • DPM/ACC – DPM/ACC server station containing 1784-PCIC ControlNet Interface module.

PLC net:

• DRGCLX01 – ControlLogix Chassis containing Bridge Main processor and ControlNet modules. • SBR – ControlLogix Chassis containing ControlNet module and several I/O modules. • SBR – PointIO module for interfacing the SSI encoders for wire lengths ladder and side winches. • ECR – ControlLogix Chassis containing ControlNet module and several I/O modules and

interface with AMS system and spud carrier. • Hydraulic room – ControlLogix Chassis containing ControlNet module and several I/O modules.



• Hydraulic room – PointIO module for interfacing the SSI encoders for wire lengths spud hoisting winches.

• Spud carrier – ControlLogix Chassis containing ControlNet module and several I/O modules. • Ladder – ControlLogix Chassis containing ControlNet module and several I/O modules.

More information regarding the PLC network and PLC modules can be found in the network. See the network drawing [1] for the ‘Cutters JDN 8064/8065/8066/8067’ project. 2.9.2Computer network The SCADA computer network is based on a standard Ethernet network configuration and will contain the following IHC Systems delivered network and computer components:

• JDN-01 – Primary SCADA server. This computer will operate as the Primary SCADA in the redundant SCADA system.

• JDN-02 – Secondary SCADA server. This computer will operate as the Secondary SCADA in the redundant SCADA system.

• JDN-03 – SCADA Data logger and maintenance station located on the Office. The PLC configuration packet (RSLogix5000, etc.) is installed on this computer. Online monitoring and service is routed to the PLC processor via the Ethernet card in the DCD rack.

• JDN-04 – DPM/ACC server. The automatic cutter control and dredge profile monitor calculations are established on this server.

• JDN-06 – AI PC. This computer is used for optimal production calculations. • JDN-11 – SCADA operator station located on the Dredging console. • JDN-12 – SCADA operator station located on the Dredging console. • JDN-13 – SCADA operator station located on the Dredging console. • JDN-14 – SCADA operator station located on the Dredging console. • JDN-15 – SCADA operator station located on the Navigation console. • JDN-16 – SCADA operator station located on the Barge loading console PS. • JDN-17 – SCADA operator station located on the Barge loading console SB. • JDN-18 – SCADA operator station located on the Captains cabin. • JDN-21 – SCADA operator station located in the ECR. • JDN-22 – SCADA operator station located in the ECR. • JDN-31 – Notebook maintenance PLC/Control-net. • JDN-51 – Colour LaserJet – Network printer

The following JDN delivered components will also be part of the SCADA computer network:

• JDN-90 – Survey operator station. • JDN-91 – Survey operator station.

2.9.3Connections See the network drawing [1] for the ‘Cutters JDN 8064/8065/8066/8067’ project.

2.9.4Cabling See the network drawing [1] for the ‘Cutters JDN 8064/8065/8066/8067’ project.

2.10External interface requirements

2.10.1Interfacing with Alarm Monitoring System (AMS ) Interface signals communication link as specified in the soft I/O list [2]. The communication with the AMS system is based on RS422 with the following specifications:

• Galvanic separated. • Protocol Modbus RTU • Minimum data speed 9600 baud, no parity, 8 bits, 1 start/stop bit. • Minimum update rate 5 per second.

The IMC interface module is located in a PLC remote IO rack and is configured as master/slave.



2.10.2Interfacing with Spud carrier Interface signals communication link as specified in the soft I/O list [2]. The communication with the spud carrier system is based on RS422 with the following specifications:

• Galvanic separated. • Protocol Modbus RTU • Minimum data speed 9600 baud, no parity, 8 bits, 1 start/stop bit. • Minimum update rate 5 per second.

The IMC interface module is located in a PLC remote IO rack and is configured as slave.

2.10.3Interfacing with gyro Gyro signals are connected to DPM/ACC server via a RS232 interface and a standard NMEA protocol with the following specifications:

• Galvanic separated. • Protocol NMEA 0183 with a HDT – Heading, True specification:

- $-HDT,x.x,T*hh<CR><LF> � x.x = heading, accuracy 1 digit behind decimal point � T = true � *hh = checksum

- Information according to the “National Marine Electronics Association NMEA 0183 Standard For Interfacing marine Electronic Devices”

• Minimum data speed 9600 baud, no parity, 8 bits, 1 start/stop bit. • Minimum update rate 10 per second.

2.10.4Interfacing with (D)GPS (D)GPS signals are connected to DPM/ACC server via a RS232 interface and a standard NMEA protocol with the following specifications:

• Galvanic separated. • Protocol NMEA 0183 with a GGA – Position specification. Information according to the “National

Marine Electronics Association NMEA 0183 Standard For Interfacing marine Electronic Devices” • Minimum data speed 9600 baud, no parity, 8 bits, 1 start/stop bit. • Minimum update rate 10 per second.

2.10.5Interfacing with survey system There will be one protocol, message definition used for communication between de JdN Survey and the IHC IMS systems. The SURVEY PROTOCOL will communicate via UDP and/or TCP (UDP and TCP protocols are equal to Microsoft Winsockets) using the following message layout. All messages will be formatted in this way. Survey communication MessageLength uint16 Total length of message in bytes including the length itself SequenceNumber uint16 Incremented each time a new messages is transmitted Origin int8 Identification of specific origin within the system

PLC=1 ECDIS=2 DPDT=3 SURVEY=4 IMS=5

NrOfSubMessages uint16 Total number of sub-messages (tag + data) contained in this message.

TimeOfMessage Double Time of message data. Ctag-1 uint16 CTag 1 ... 10000 Following value is an 8 bit integer

CTag 10001 ... 20000 Following value is an 16 bit integer CTag 20001 ... 30000 Following value is an 32 bit integer CTag 30001 ... 40000 Following value is an 32 bit float



CTag 40001 ... 50000 Following value is an 64 bit double CTag 50001 ... 60000 Length is included as next two bytes

Data-1 1 to 8 bytes Ctag-2 uint16 Data-2 1 to 8 bytes CTag-3 uint16 Data-3 1 to 8 bytes ........... CTag-N uint16 Data-N 1 to 8 bytes Notes: - Ctag == Communication Tag - Messages will be broadcasted on the network - Port numbers can be defined for the individual systems - Data will be distributed over multiple messages depending on the data length. UDP messages are

limited to 512 bytes.

Jan de NullSurvey

TCP Transmission

Processing

IMS Systems

UDP Transmission

Processing

Communication from IMS Systems towards Survey will be based on UDP communication. Communication from JdN survey IMS System will be based on TCP & UDP network protocol. It is allowed to make multiple connections to this system. IHC Systems will be responsible for defining the allowed message contents based on the above given message format that can be handled by these systems. The following data can be send to DPM by Survey - Position information from Survey to DPM (UDP) The following data will be send to Survey by DPM - Position information from DPM to Survey (UDP) The following data can be send to Survey by DPM - Request design profile (Triangles) (TCP) The following data can be send to DPM by Survey - Requested design profile (Triangles) (TCP)

2.10.5.1.1Definitions IMS Systems:



+Z

+X

+Y

+

+

+

- +X direction == Cutter head (Cutter dredger) - -X direction == Spud carrier (Cutter dredger) - +Y direction == Right side (Cutter dredger, dredging) - -Y direction == Left side (Cutter dredger, dredging) - +Z direction == Upwards - -Z direction == Downwards - Roll == rotation around the X-axis, from +Y rotated

thru +Z is a positive rotation - Pitch == rotation around the Y-axis, from +Z rotated

thru +X is a positive rotation - Depth equals Height == Z-axis, upwards is positive,

downwards is negative Zero of the vessel to be stated (reference point): - X=0 at zero position of main spud - Y=0 at centreline vessel - Z=0 at baseline (moulded)

2.10.5.1.2Position information from Survey to DPM ( UDP protocol)

MessageLength Uint16 … SequenceNumber Uint16 … Origin Int8 4 NrOfSubMessages Uint16 1 TimeOfMessage Double … Ctag Uint16 50101 Length Uint16 … Tide Double Tide level [m] TideStatus Uint16 Status tide EastingAntenne Double Easting, antenne position [m] NorthingAntenne Double Northing, antenne position [m] HeightAntenne Double Height, antenne position [m] (Chart Datum) DGPSQuality Uint16 0=Unknown, 1=GPS, 2=DGPS, 4=LRK,

5=EDGPS. 2,4 and 5 acceptable OffsetXAntenne Double Offset X antenne position [m] OffsetYAntenne Double Offset Y antenne position [m] OffsetZAntenne Double Offset Z antenne position [m] EastingCutter Double Easting, cutter position [m] NorthingCutter Double Northing, cutter position [m] Compass Double Compass angle [deg] (Corrected for grid) Chainage Double Chainage spud [m] (KP value spud) Offset Double Offset spud [m] (DCC spud) EastingP1 Double Easting [m] point 1 NorthingP1 Double Northing [m] point 1 KPvalueP1 Double KP [m] point 1 EastingP2 Double Easting [m] point 2 NorthingP2 Double Northing [m] point 2 KPvalueP2 Double KP [m] point 2 EmergencyBit Uint16 1=Emergency, 0=OK

2.10.5.1.3Position information from DPM to Survey ( UDP protocol)



MessageLength Uint16 … SequenceNumber Uint16 … Origin Int8 5 NrOfSubMessages Uint16 1 TimeOfMessage Double … CTag Uint16 50102 Length Uint16 … DepthCutter Double Depth cutter [m] at cutpoint, above CD +,

below CD - WidthCutter Double Width cutter [m] at cutpoint, PS -, SB + Shiplength Double Ship length [m] TrunnionDepth Double Trunnion depth [m], above CD +, below CD - SpudPosition Double Spud position [m] Pitch Double Pitch [deg] Roll Double Roll [deg] ActualTide Double Actual tide [m] ActualTideStatus Uint16 Actual tide status Compass Double Compass angle [deg] (Corrected for grid) Density Double Density [t/m3] Velocity Double Velocity [m/s] ConFOut1 Double Configurable output 1 ConFOut2 Double Configurable output 2 ConFOut3 Double Configurable output 3 ConFOut4 Double Configurable output 4

The configurable outputs are adjustable on the SCADA system (Header: ‘Config’; Fkey: ‘Select’).

2.10.5.1.4Request design profile (Triangles) from D PM to Survey (TCP protocol)

MessageLength Uint16 … SequenceNumber Uint16 … Origin Int8 5 NrOfSubMessages Uint16 1 TimeOfMessage Double … Ctag Uint16 50103 Length Uint16 … Requested Number of triangles Uint32 Requested number of triangles

2.10.5.1.5Requested design profile (Triangles) fro m SURVEY to DPM (TCP protocol)

MessageLength Uint16 … SequenceNumber Uint16 … Origin Int8 4 NrOfSubMessages Uint16 1 TimeOfMessage Double … Ctag Uint16 50104 Length Uint16 … Name Char[16] Used to identify Total Uint32 Total number of triangles Start Uint32 Number of first triangle in this message



0 .. Total-1 End Uint32 Number of last triangle in this message

0 .. Total-1 P1.Easting Double Easting [m] of point 1 in triangle Start P1.Northing Double Northing [m] of point 1 in triangle Start P1.Depth Double Depth [m] of point 1 in triangle Start P2.Easting Double Easting [m] of point 2 in triangle Start Triangle Start P2.Northing Double Northing [m] of point 2 in triangle Start P2.Depth Double Depth [m] of point 2 in triangle Start P3.Easting Double Easting [m] of point 3 in triangle Start P3.Northing Double Northing [m] of point 3 in triangle Start P3.Depth Double Depth [m] of point 3 in triangle Start ………………………… P1.Easting Double Easting [m] of point 1 in triangle End P1.Northing Double Northing [m] of point 1 in triangle End P1.Depth Double Depth [m] of point 1 in triangle End P2.Easting Double Easting [m] of point 2 in triangle End Triangle End P2.Northing Double Northing [m] of point 2 in triangle End P2.Depth Double Depth [m] of point 2 in triangle End P3.Easting Double Easting [m] of point 3 in triangle End P3.Northing Double Northing [m] of point 3 in triangle End P3.Depth Double Depth [m] of point 3 in triangle End

2.10.5.1.6Logging information from SURVEY to DPM (U DP protocol) MessageLength Uint16 … SequenceNumber Uint16 … Origin Int8 4 NrOfSubMessages Uint16 1 TimeOfMessage Double … Ctag Uint16 50105 Length Uint16 … Name Char[16] Used to identify CutHeight Double Thickness of removed soil [m] CutVolume Double Volume of removed soil per second [m3/s] AnchorLeftEasting Double Easting position of left anchor [m] AnchorLeftNorthing Double Northing position of left anchor [m] AnchorRightEasting Double Easting position of right anchor [m] AnchorRightNorthing Double Northing position of right anchor [m]

2.10.6Interfacing with owner supply dredge supervis ory system On the SCADA servers 2 RS232 outputs are available. The selection and scaling of SCADA points to the RS232 outputs can be done with a selector program on the office PC. Additionally 12 digital outputs and 8 analogue configurable outputs are available for the supervisory system. The selection and scaling of SCADA points to the hardwired outputs can be done with a selector program on the office PC.

2.10.7Interfacing with field Interface signals connected to the hardware interface cards as specified in the I/O list [3]. 2.10.7.1Galvanic isolation Galvanic isolation is provided between inputs or outputs and the computer or electronic system where the signal is used. This isolation is provided according to two methods:



- Low isolation method . The isolation is done on the computer’s input/output device. A disturbance of an analogue or digital input or output signal may not damage the processor bus connection, or processor, or any other input/output device than the signal’s own.

- High isolation method . The isolation is done in the panel where the signal is entered, on terminal strip level. The signal is isolated in such a way that a disturbance of the signal does not damage any other component than the signal’s own isolating module. At the same time no other sensor, instrumentation or power supply is damaged or disturbed.

A disturbance means: - A short circuit - Over current - Over voltage - Earth fault - Failure in sensor’s power supply (i.e. incorrect voltage, over voltage, short circuit, earth fault, …) Galvanic isolation is also to be provided between different systems. In this case isolation is to be provided at both sides according to the high isolation method: - Where extensive cabling is installed - Serial interfaces between PLC’s/PC’s/PCB’s and PLC’s/PC’s/PCB’s. In critical loops Zener diodes will be fitted in such a way that a disturbance in a part of the loop, or in an instrument does not affect the critical loop. Galvanic isolation does not imply that other safety devices can be dropped (e.g. diodes, fuses, …) Low isolation: The isolation is to the computer system’s standard. Power supplies are short circuit proof. Isolated power supplies are used to supply the following number of signals: - Not more than 32 digital signals or 16 analogue signals are powered from ine isolated supply unit. for

every input/output card an isolated supply unit is provided. - For each 16 digital or 8 analogue signals power supply is provided with double-poled fuses. - Power supplies to field devices are always fused. The signals enter directly to the galvanic isolated part of the IO card. External signals (from outside the input/output cabinet) are fused (single pole). The fuses can be inside the terminals. High isolation The isolation is by means of interface modules, at terminal strip level. Power supplies are short circuit proof. Interface modules to be standardized. Modules are DIN-rail mounted, or fitted on common backplanes (make Phoenix, Hartmann & Braun, Praxis Automation or similar): Isolated power supplies are used to supply the following number of signals: - Not more than 32 digital signals or 16 analogue signals are powered from one isolated supply unit.

For every input/output card an isolated supply unit is provided. - The supply to each sensor is provided with a DC/DC converter. - For each 16 digital or 8 analogue signals power supply is provided with double-poled fuses. - Power supplies to field devices are always fused. The signals are each isolated separately in the following way: - Digital input: isolated input relais - Digital output: isolated output relais - Analogue input: isolation mode - Analogue output: isolation module The separation between the low and the high isolation method is done on input/output device level, i.e. input/output cards do not process signals of different isolation method.



2.10.7.2IMC stop The digital outputs are provided with a hardwired IMC emergency stop logic. When one of the following emergency stops is activated the digital outputs and relays are switched of except the outputs of the dredging desk: - IMC stop on the dredging desk. - IMC stop on PLC cabinet switchboard room. - IMC stop on PLC cabinet engine control room. - IMC stop on PLC cabinet hydraulic room. - IMC stop on PLC cabinet on the ladder. - IMC stop on PLC cabinet on the spud carrier. 2.10.7.3Emergency close dredge valves As described in 2.4.1.7. 2.10.7.4Emergency stop logic The hydraulic emergency stops are provided with hard wired relay logic in one of the PLC cabinets. The logic will switch of the digital solenoids and enable signals to the hydraulic amplifier cards. The following emergency stop logics are provided: - Emergency stop spud shifting winches - Emergency stop aux spud hoisting winch - Emergency stop main spud hoisting winch - Emergency stop aux spud tilting - Emergency stop main spud tilting - Emergency stop ladder trunnion / tilting - Emergency stop ladder locking - Emergency stop anchor winch PS - Emergency stop anchor winch SB - Emergency stop guy winch PS - Emergency stop guy winch SB - Emergency stop barge mooring winch SB Aft - Emergency stop barge mooring winch SB Fore - Emergency stop barge mooring winch PS Aft - Emergency stop barge mooring winch PS Fore - Emergency stop side winch PS spooling devices - Emergency stop side winch SB spooling devices - Emergency stop barge loading arms SB - Emergency stop barge loading arms PS

2.11Internal interface requirements Not applicable.

2.12System quality factors (non-functional requirem ents)

2.12.1Performance The ControlNet between dredge processor, the server and the remote I/O racks will be configured in such way that the deterministic scheduled bandwidth is large as possible for fast internal communications but also has enough bandwidth is available for the servers.

2.12.2Reliability No special requirements applicable.

2.12.3Maintainability A ContolLogix PLC configuration software will be installed on the viewer station in the computer room. The computer is connected to the ControlNet via an Ethernet card in a ControlLogic rack. From this station the PLC processor can be monitored, down loaded, uploaded and software changes made.



The Cimplicity studio SCADA software will be installed on the viewer station in the computer room. From this position it is possible to change the SCADA project software and graphics.

2.12.4Availability The ControlNets will be a redundant COAX cable implementation.

2.12.5Safety No special requirements applicable.

2.13Other requirements and constraints 2.13.1Design and construction constraints The implementation of the Dredge Profile Monitoring (DPM) functions will be the standard IHC IMS DPM software running on the server and ActiveX implementations on the SCADA screens. 2.13.2Personnel related requirements Not applicable. 2.13.3Training and instruction related requirements Not applicable. 2.13.4Logistics related requirements See Confirmation of Order. 2.13.5Packaging requirements See Confirmation of Order.



3.Qualification provisions During the factory acceptance test (FAT) the I/O points will be simulated with a separate process simulation packet or, when use full, simulated with additional logics in the PLC processor it self.

4.Scope of delivery See the confirmation of order.



Attachment A

Documents

IHC Integrated Monitoring and Control System FS 8064