DNV-RP-A205: Offshore Classification Projects - Testing ... · PDF fileDET N ORSKE V ERITAS AS Recommended Practice DNV-RP-A205, October 2013 CHANGES – CURRENT – Page 3 CHANGES

RECOMMENDED PRACTICE

DET NORSKE VERITAS AS

The electronic pdf version of this document found through http://www.dnv.com is the officially binding version

DNV-RP-A205

Offshore Classification Projects - Testing and Commissioning

OCTOBER 2013

© Det Norske Veritas AS October 2013

Any comments may be sent by e-mail to [email protected]

This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of this document, and is believed to reflect the best ofcontemporary technology. The use of this document by others than DNV is at the user's sole risk. DNV does not accept any liability or responsibility for loss or damages resulting fromany use of this document.

FOREWORD

DNV is a global provider of knowledge for managing risk. Today, safe and responsible business conduct is both a licenseto operate and a competitive advantage. Our core competence is to identify, assess, and advise on risk management. Fromour leading position in certification, classification, verification, and training, we develop and apply standards and bestpractices. This helps our customers safely and responsibly improve their business performance. DNV is an independentorganisation with dedicated risk professionals in more than 100 countries, with the purpose of safeguarding life, propertyand the environment.

DNV service documents consist of among others the following types of documents:

— Service Specifications. Procedural requirements.

— Standards. Technical requirements.

— Recommended Practices. Guidance.

The Standards and Recommended Practices are offered within the following areas:

A) Qualification, Quality and Safety Methodology

B) Materials Technology

C) Structures

D) Systems

E) Special Facilities

F) Pipelines and Risers

G) Asset Operation

H) Marine Operations

J) Cleaner Energy

O) Subsea Systems

U) Unconventional Oil & Gas


Recommended Practice DNV-RP-A205, October 2013

CHANGES – CURRENT – Page 3

CHANGES – CURRENT

General

This document supersedes DNV-RP-A205, March 2012.

Text affected by the main changes in this edition is highlighted in red colour. However, if the changes involvea whole chapter, section or sub-section, normally only the title will be in red colour.

Main changes October 2013

• General

— Spelling, grammar and punctuation have been amended. — The use of abbreviations has been standardized and [1.8] Abbreviations has been expanded.— References to renumbered documents have been updated.

• Sec.6 Safety, Health and Environment

— A new Sec.6 on SHE has been added.

• Appendices

— Previous App.A.6 has been deleted.— There have been minor updates to App.A, App.B and App.C.— In App.D and App.E survey categorisation has been developed for FPSO and FSO (previously marked

“Pending”).— Survey scope for the Class Notation PROD has been developed in App.G.2.

In addition to the above stated main changes, editorial corrections may have been made.

Editorial Corrections



Contents – Page 4

CONTENTS

CHANGES – CURRENT ................................................................................................................... 3

1 Introduction ............................................................................................................................... 6

1.1 Preamble ......................................................................................................................................................... 6

1.2 General............................................................................................................................................................ 6

1.3 Objective ......................................................................................................................................................... 6

1.4 Scope and application.................................................................................................................................... 6

1.5 Structure of this document............................................................................................................................ 6

1.6 How to use this document ............................................................................................................................. 6

1.7 References....................................................................................................................................................... 6

1.8 Abbreviations ................................................................................................................................................. 7

2 Commissioning process and definition of various stages....................................................... 8

2.1 Detailed design ............................................................................................................................................... 8

2.2 Mechanical completion.................................................................................................................................. 8

3 Pre-commissioning .................................................................................................................... 9

3.1 Commissioning............................................................................................................................................... 9

3.2 Integration testing.......................................................................................................................................... 9

3.3 Marine sea trial .............................................................................................................................................. 9

3.4 Delivery ......................................................................................................................................................... 10

3.5 Hook up......................................................................................................................................................... 10

3.6 Operation...................................................................................................................................................... 10

4 Commissioning procedures .................................................................................................... 10

5 DNV involvement in commissioning...................................................................................... 12

6 Safety, health and environment ............................................................................................. 12

App. A DNV typical survey categorization for drillships during mechanical completion and commissioning of marine and drilling systems .................................................... 13

A.1 Category I systems for commissioning (for integration) ................................................................ 13A.2 Category II systems for commissioning (for integration) ............................................................... 13A.3 Category I systems for commissioning (as independent systems).................................................. 14A.4 Category II systems for commissioning (as independent systems) ................................................ 14A.5 Category III systems for commissioning (as independent system)................................................. 16

App. B DNV typical survey categorization for semi-submersible units during mechanical completion and commissioning of marine and drilling systems ........... 17

B.1 Category I systems for commissioning (for integration) ................................................................ 17B.2 Category II systems for commissioning (for integration) ............................................................... 17B.3 Category I systems for commissioning (as independent systems).................................................. 18B.4 Category II systems for commissioning (as independent systems) ................................................ 18B.5 Category III systems for commissioning (as independent system)................................................. 20

App. C DNV typical survey categorization for “jack-up” units during mechanical completion and commissioning of marine and drilling systems ............................... 21

C.1 Category I systems for commissioning (for integration) ................................................................ 21C.2 Category II systems for commissioning (for integration) ............................................................... 21C.3 Category I systems for commissioning (as independent systems).................................................. 22C.4 Category II systems for commissioning (as independent systems) ................................................ 22C.5 Category III systems for commissioning (as independent system)................................................. 24

App. D DNV typical survey categorization for FPSO units during mechanical completion and commissioning of marine and production systems ............................................. 25

D.1 Category I systems for commissioning (for integration) ................................................................ 25D.2 Category II systems for commissioning (for integration) ............................................................... 26D.3 Category I systems for commissioning (as independent systems).................................................. 27D.4 Category II systems for commissioning (as independent systems) ................................................ 28D.5 Category III systems for commissioning (as independent system)................................................. 29



Contents – Page 5

App. E DNV typical survey categorization for FSO units during mechanical completion and commissioning of marine and production systems.............................................. 30

E.1 Category 1 systems for commissioning (for integration)................................................................ 30E.2 Category II systems for commissioning (for integration) ............................................................... 30E.3 Category I systems for commissioning (as independent systems).................................................. 31E.4 Category II systems for commissioning (as independent systems) ................................................ 32E.5 Category III systems for commissioning (as independent system)................................................. 33E.6 Category I systems for commissioning (class notation CRANE) .................................................. 33

App. F DNV Requirements related to marine, utility and safety systems ............................ 34

F.1 Stability and watertight integrity..................................................................................................... 34F.2 Fabrication and testing of offshore structures ................................................................................. 35F.3 Marine and machinery systems and equipment .............................................................................. 36F.4 Electrical installations ..................................................................................................................... 42F.5 Instrumentation and telecommunication systems ........................................................................... 51F.6 Fire protection systems ................................................................................................................... 53F.7 Vessel operations ............................................................................................................................ 56

App. G Survey scope for specific class notations...................................................................... 59

G.1 DNV survey scope for DRILL ....................................................................................................... 59G.2 DNV survey scope for PROD ....................................................................................................... 67

CHANGES – HISTORIC ................................................................................................................. 75



Sec.1 Introduction – Page 6

1 Introduction

1.1 Preamble

This Recommended Practice (RP) outlines the general best practices that lead to effective testing andcommissioning of marine and industrial systems onboard mobile offshore units in newbuilding projects. Forconvenience, an extract of all DNV rules related to testing and commissioning of marine and industrial systemshave been included in this document. It should be noted that for more accurate applicable statutory and classrequirements related to testing and commissioning, applicable versions of the statutory and class rules asspecified in the contract shall be referred to. System categorizations included in the appendix are general innature and may not include all applicable systems that are specific to particular newbuilding projects and so,this document should be used only as a guide. This document currently includes requirements related to drillingunits with the intention to include requirements related to other object types at a later stage.

1.2 General

DNV has recognized that the technical complexity of modern Offshore Installations is increasing due tosystems becoming more complex, more automated and more tightly integrated. This evolution providesdesigners, shipyards, owners and other involved parties challenges in the management of testing andcommissioning equipment and systems onboard offshore units successfully.

1.3 Objective

This RP outlines recommended work processes for the testing and commissioning activities on offshorenewbuild units. This document shall be read as a guide to testing and commissioning equipment and systemsonboard Offshore Units. The document will help users in preparing or carrying out witnessing of testing andcommissioning activities to satisfy the requirements of classification and applicable statutory regulations whereDNV has delegation from such authorities.

It should be noted that final acceptance of commissioning is the owner's responsibility. This RP only coversclass and statutory related activities.

1.4 Scope and application

This guide is applicable to testing and commissioning activities onboard classed Mobile Offshore Units e.g.,Drilling, Accommodation and FPSOs.

1.5 Structure of this document

This document contains:

— A general overview of testing and commissioning activities together with samples of typical contents oftesting and commissioning procedures including the ones for integration testing and commissioning.

— Extract of applicable DNV Service Specifications and DNV standards related to preparation, testing andcommissioning of various marine, utility and industrial systems.

— Categorization of marine, utility and industrial systems that can be used to decide on the extent ofinvolvement from various stakeholders.

The RP can be used as a check list for reviewing Commissioning procedures to assist preparation ofrequirements related to class and applicable statutory regulations.

1.6 How to use this document

The main function of the RP is to ensure that the commissioning procedures contain all the relevant informationrequired by the applicable DNV Service Specifications and DNV Offshore Standards.

If the commissioning procedures are reviewed against this document, they should contain all the requiredinformation to ensure compliance with the various offshore standards thus ensuring that testing andcommissioning activities are fully in compliance with the required Classification requirements.

1.7 References

Information and requirements provided in this RP are extracted from the following DNV ServiceSpecifications, Offshore Standards and Rules for Classification of Ships (Rules for Ships):

— DNV-OSS-101 Rules for Classification of Offshore Drilling and Support Units

— DNV-OSS-102 Rules for the Classification of Floating Production, Storage and Loading Units

— DNV-OS-A101 Safety Principles and Arrangements

— DNV-OS-C301 Stability and Watertight Integrity

— DNV-OS-C401 Fabrication and Testing of Offshore Structures

— DNV-OS-D101 Marine and Machinery Systems and Equipment

— DNV-OS-D201 Electrical Installations

— DNV-OS-D202 Automation, Safety, and Telecommunication Systems



Sec.1 Introduction – Page 7

1.8 Abbreviations

— DNV-OS-D301 Fire Protection

— DNV-OS-E101 Drilling Plant

— DNV-OS-E201 Oil and Gas Processing Systems

— DNV Rules for Ship Pt.4 Ch.2, Ch.3, Ch.7, Ch.8, and Ch.14 / Pt.5 Ch.3 / Pt.6 Ch.3.

Abbreviation Description

AC Alternating Current

BOP Blow Out Preventer

CSG Casing

DAT Digital Audio Tape

DB Distribution Board

DC Direct Current

DDM Derrick Drilling Machine

DFMA Design for Manufacture and Assembly

DP Dynamic Positioning

DPS Dynamic Positioning System

ESD Emergency Shut Down

E0 Unmanned machinery space alarm

F&G Fire & Gas (systems)

FPSO Floating Production, Storage and Offloading (Unit)

FSO Floating Storage and Offloading (Unit)

FW Fresh Water

GMDSS Global Maritime Distress Safety System

HP High Pressure

HPU Hydraulic Power Unit

HVAC Heating, Ventilation and Air Conditioning

ICCP Impressed Current Cathodic Protection

ICMS Integrated Control and Management System

LER Local Electrical Room

LIR Local Instrument Room

LMRP Lower Marine Riser Package

LP Low Pressure

LQ Living Quarter

LV Low Voltage

MC Mechanical Completion

MCC Main Control Center

MGPS Marine Growth Protection System

P & ID Piping & Instrument Diagram

PABX Private Automatic Branch Exchange (Telephone System)

PA/GA Public Address / General Alarm

PCR Process Control Room

PMS Power Management System

PSD Process Shut Down

QA Quality Assurance

QC Quality Control

QSP Quality Survey Plan

SIT System Integration Test

SWBD Switchboard

TA/ATA Thruster Assisted/ Automatic Thruster Assisted

UPS Uninterruptable Power Supply

VDU Visual Display Unit

VFD Variable Frequency Drive

WHC Wellhead Control System



Sec.2 Commissioning process and definition of various stages – Page 8

2 Commissioning process and definition of various stages

Commissioning of an offshore unit is a time consuming and complex process. A structured approach is anecessity for a successful commissioning phase of the newbuilding projects. While the requirements for thetesting and commissioning are clearly specified in various applicable DNV standards, how exactly thecommissioning activities should be carried out is largely left to the Builder/Owners of the mobile offshoreunits. For instance, there will be dependencies between the different packages. It is, however, a DNVrequirement to see that the testing requirements mentioned in our rules are carried out during commissioning.It is often required by DNV offshore standards that the equipment is to be tested in “as installed” condition. So,though similar tests have already been carried out during a factory acceptance test (FAT), a new test in installedcondition would be required. A typical example could be the offshore cranes. They will probably be overloadtested during FAT, but they will still be necessary to overload test in installed condition.

Before commissioning starts the responsible DNV surveyor and all stakeholders involved in preparing andcarrying out the testing and commissioning should also have an idea as to what activities are considered mostimportant to DNV and also what activities are not within the DNV scope. During commissioning it is alsoimportant to be aware that the owner’s and the yard’s viewpoint as to what is DNV’s scope of work may notbe in harmony with the scope required by the DNV Offshore standards. It is also important to recognize thatowner/yard may have additional requirements e.g., related to performance or additional functionality, that maybe over and above the classification requirements of DNV.

2.1 Detailed design

When entering into the final stages of any project, the detailed design is expected to be fully completed,reviewed and approved. Failure to complete the design in a satisfactory manner may undermine alreadycompleted testing and commissioning, especially comments that may result in redesigning component orsystems. Any duplication in redoing testing and commissioning is not very efficient and will result in loss ofvaluable time and additional cost. The preferred solution would be to have the design engineers availableduring the commissioning stages. The design engineer can then confirm completion of the design activities andadvise what needs to be rectified, redesigned and followed up.

2.2 Mechanical completion

For most offshore projects mechanical completion (MC) is considered a natural and a logical step on the waytowards proper project completion. It is normal for the builder or system vendor to create mechanicalcompletion check lists for the actual equipment or system. Only some parts of mechanical completion iscovered in the DNV Offshore standards and is thus formally DNV scope of work. DNV generally maintainoversight of most of the mechanical completion activities of the project through unscheduled surveys. Whereit is mandated by the Quality Survey Plan (QSP), a DNV surveyor may attend certain mechanical completionactivities. Some of the examples of such activities are:

— Pressure testing of piping. — Installation of main engines/alignment.— Cable installation / segregation of cables.

In this instruction, MC is completed when construction and installation of equipment, piping, instrumentation,



Sec.3 Pre-commissioning – Page 9

cabling, electrical equipment, etc. have been demonstrated as physically complete. Dynamic tests are limitedto non-energised tests like cold alignment of shafting for motors, engines and generators. Further megger tests,flushing and drying of piping systems, cleaning, etc. is included in this milestone. Typically, the MC will resultin a number of outstanding activities that must be rectified before any actual pre-commissioning, testing andcommissioning can commence. Normal findings typically include missing electrical equipment grounding,lack of proper shielding of fuel pipes or hot surfaces, insufficient nozzle coverage for deluge systems, etc. Theevidence of the required certification of equipment should be verified during mechanical completion stage sothat there are no surprises before commencing pre-commissioning, testing and commissioning stages. Failureto do so may jeopardize the safety of such activities.

3 Pre-commissioning

Pre-commissioning is the stage before commissioning which involves the verification of functional operabilityof the equipment part or full systems. This stage of testing requires energising of equipment and introduction offluids in fluid piping systems. This is the stage where the vendor and/or the yard are carrying out independenttesting of the equipment/system. This is a “trial and error” phase where class normally do not attend. Duringreview and approval of commissioning procedures, it is important for the DNV surveyor to make sure that testsrequired by the rules are carried out during the commissioning phase. It may be a challenge when the testsrequired by the rules are carried out during pre-commissioning but not attended by a DNV Surveyor. This shouldbe highlighted during the review of the commissioning procedures. Pre-Commissioning would typically include:

— Loop testing. — Motor no load runs. — Equipment final alignments.

3.1 Commissioning

The phase after mechanical completion, pre commissioning and testing is often referred to as thecommissioning phase. The “commissioning of an offshore unit” is a very wide term and for the purpose ofclassification, it refers to final checks, inspection and tests that every operational component or system goesthrough to confirm operational readiness. Typically equipment/system commissioning will consist of:

— Functional testing of systems by start-up priority.— Testing of ESD/PSD and F&G.— Load tests and other equipment performance testing.

In the commissioning phase it will be verified that the installed equipment and system are working as intendedand that the rule requirements for the various equipment/system functionality are met. The rules will haverequirements for “performance”, e.g. number of starts for starting air receivers and “functionality”, e.g. safetyfunctions of boilers and incinerators.

For effective commissioning, it is important that the testing and commissioning of the different skids/packagesare given the right priority so that they happen in the right sequence/order. Very little commissioning can beperformed without the hydraulic ring line, power system, cooling water, pneumatic systems and other utilitiesbeing functional and working properly. Typically, temporary arrangements should not be accepted forcommissioning. It should also be a general principle that commissioned equipment is not dismantled ormodified after testing and commissioning of the equipment/system is completed. Once the equipment/systemis tested and commissioning is completed it is good practice to have a close out meeting where thecommissioning procedures are signed, by owner and outstanding punch items are agreed.

3.2 Integration testing

Integration testing is a collective term for testing and commissioning of more than one system (a collection ofsystems, sub-systems and equipment packages) to ensure compliance with project requirements. Many systemsonboard are integrated with other systems in one way or another. However, in this context, integration testingis meant to cover the following but not limited to:

— Complete functional testing of systems across equipment boundaries. — Final adjustments of alarm-limits, measuring instruments.— End to end testing of ESD/PSD and F&G.— Integrated testing of PROD/DRILL plants.

Many of the system integration tests are often carried out during the marine sea trial as all the relevant systemsand consumers may be required to be ready for such tests to be carried out. The trials can also be organised e.g.with one drilling trial and one marine sea trial.

3.3 Marine sea trial

The marine sea trials typically focuses on propulsion, steering and utility systems functioning under normal



Sec.4 Commissioning procedures – Page 10

operating conditions. A prerequisite for sea trials is that the major safety systems like fire fighting, life-savingappliances, PA/GA, HVAC, etc. are satisfactorily commissioned ahead of sea trials. In addition, the incliningtest should be completed prior to taking the unit out on sea trial.

Sea trials are conducted to test a vessels performance and general seaworthiness. Testing of a vessels speed,manoeuvrability, equipment and safety features are usually conducted during sea trial. However, thisdemonstration of speed and manoeuvrability, etc. is normally more important for a merchant vessel than anoffshore unit. A merchant vessel will typically have a contract speed as part of the contract between the builderand the owner. That is seldom the case for an offshore unit. The marine sea trial will typically consist of butnot limited to:

— testing of Dynamic Positioning System— final commissioning of Ballast systems, Cooling water, Lube oil, Fuel Oil, HVAC, Thrusters, etc.— speed test— crash stop— turning test— E0 test (Unmanned machinery space alarms)— endurance test.

The marine sea trial is normally not relevant for fixed units or units without propulsion.

3.4 Delivery

Depending on type of unit, the successful completion of all testing and commissioning activities will triggerthe delivery of the unit. The level of completion will however vary from project to project. Typically a projectwith a contract in place and a long transit to the operation area, the owner may prefer an early delivery with theintention to close some of the outstanding items in transit. If a unit does not have a project in place, the ownerwill typically aim for a higher level of completion before they will accept the unit. Equipment subject to classapproval that is not readily commissioned in accordance with approved testing and commissioning proceduresshould be identified in the delivery documentation by issuance of relevant conditions of class. It should beevaluated prior to delivery whether the outstanding class and statutory systems are minor in nature and doesnot affect the safety and integrity of the unit that will allow the Class Society to issue appropriate Class andStatutory Certificates. If critical systems e.g., fire fighting/detection, propulsion and steering, life-savingappliances, navigational aids, etc. are not commissioned, Class and Statutory Certificates are not typicallyissued.

3.5 Hook up

Hook up is mostly relevant for fixed units like FPSOs and other units that will stay on the same location for anumber of years, however some drilling units may require some testing of systems on first location. Typicallyit means the hook up of risers to the unit and preparations required prior to first oil. Many of the vitalcommissioning activities for such units will have to take place at location and cannot be completed during theconstruction of the unit. Hook up is not typically included in the class scope but if safety and integrity of thevessel is in question, Class Society typically evaluates the status of such operation.

3.6 Operation

Once the unit is in operation, there should not be any major outstanding class and statutory items carried overfrom the newbuilding phase and procedures related to “units in operation” requirements should be followed.

4 Commissioning procedures

Two types of procedures are normally submitted for Review / Approval:

— System or Equipment Commissioning— Integration Testing.

Typical examples of the contents list of these procedures are shown in the Figure 4-1 and Figure 4-2 below.



Sec.4 Commissioning procedures – Page 11

Figure 4-1Typical content for a system commissioning procedure

Figure 4-2Typical content for a system integration test procedure

SYSTEM COMMISSIONING PROCEDURE

1 SYSTEM DESCRIPTION

1.1 Commissioning Package 1.2 System Integration Description 1.3 Pre-requisites

2 OBJECTIVE

3 GENERAL

3.1 Safety requirements and precautions 3.2 Regulatory and project specific requirements 3.3 Participants (e.g. Owner / Vendor / Class Representative / Builder) 3.4 Kick-off meeting 3.5 Special / Temporary Tools / Equipment, Spare & Consumables 3.6 Traceability of documents & records 3.7 Punch list system

4 PRE-COMMISSIONING 4.1 Each package listed

5 OPERATIONAL MULTI-DISCIPLINE COMMISSIONING

5.1 Detailed test procedure with acceptance criteria

APPENDIXES

I. Equipment Data Sheet / Information II. Commissioning Test Results / Running Logs III. Single Line Diagram / Block Diagram IV. P & ID

INTEGRATION TEST PROCEDURE

1 SYSTEM DESCRIPTION

1.1 Commissioning Package 1.2 System Integration Description 1.3 Pre-requisites

2 OBJECTIVE

3 GENERAL

3.1 Safety Requirements and precautions 3.2 Sequence of Events 3.3 Participants (e.g. Owner / Vendor / Class Representative / Builder) 3.4 Kick-off meeting 3.5 Special / Temporary Tools / Equipment, Spare & Consumables 3.6 Traceability of documents & Records 3.7 Punch list system

4 PERFORMANCE OF INTEGRATION TEST 4.1 Detailed test procedure with acceptance criteria

5 OPERATIONAL MULTI-DISCIPLINE COMMISSIONING

5.1 Detailed test procedure with acceptance criteria

APPENDIXES

I. Equipment Data Sheet / Information II. Commissioning Test Results / Running Logs III. Single Line Diagram / Block Diagram IV. P & ID



Sec.5 DNV involvement in commissioning – Page 12

5 DNV involvement in commissioning

DNV’s involvement in testing and commissioning is limited to the requirements of statutory and class rules.DNV surveyor will attend testing and commissioning to the extent specified in applicable Quality SurveyProgram (QSP).

Survey scope shall be categorized as follows:

— Survey Category 1 - Statutory and Essential Systems for Safety (normally increased attendance by DNV).— Survey Category 2 - Main Systems / Functionally Important (For Main and Additional Class Notations,

extent is based on the yard’s experience and the effectiveness of Yard’s QA/QC system).— Survey Category 3 – Normally limited or no attendance required by surveyor.

The tables attached in the following appendices detail the “survey categorization during MechanicalCompletion and Commissioning of Marine and Drilling Systems” (based on Project System / Sub System List).

6 Safety, health and environment

It is important to note that commissioning activities may introduce additional hazards to the process that maynot have been considered in the design phase i.e. the use of alternative media for testing in the absence ofhydrocarbons. When evaluating extent of checks and tests the philosophy of Primum non nocere or first do noharm should be considered.

It should also be noted that the commissioning activities themselves may also introduce additional risks andhazards into the workplace. Prior to start of any commissioning the relevant safe job analysis should beperformed where relevant dangers are highlighted and sufficient efforts are taken to minimize the risks.

It is important to ensure responsibilities are clearly defined and recognised; that there are suitable and sufficientinstructions e.g. procedures, method statements, workpacks; whether control and supervision of staff andcontractors is adequate; whether arrangements for calibration of any test equipment associated withcommissioning is adequate; there is adequate control of temporary commissioning aids e.g. E&I hardwiredlinks, isolations, spades in process lines.

Drillships App.A

Semi-Submersible units App.B

Jack Ups App.C

FPSO App.D

FSO App.E



App.A DNV typical survey categorization for drillships during mechanical completion and commissioning of marine anddrilling systems – Page 13

APPENDIX A DNV TYPICAL SURVEY CATEGORIZATION FOR

DRILLSHIPS DURING MECHANICAL COMPLETION AND

COMMISSIONING OF MARINE AND DRILLING SYSTEMS

A.1 Category I systems for commissioning (for integration)

A.2 Category II systems for commissioning (for integration)

No. Name of the System Integrated with

1 Fire Main System F&G/Deluge/control

2 Inergen System F&G/HVAC/PA

3 Fire Water Deluge System F&G

4 Main Diesel Generator PMS&S/T&DP

5 Seawater Cooling System Consumer Capacity Test

6 Thruster Seawater Cooling System SIT

7 Thruster S/T

8 11Kv Switchboard (or equivalent) PMS

9 690V HPU MCC (or equivalent) SIT

10 690V Drilling VFD Switchboard (or equivalent) SIT

11 690V Thruster VFD Switchboard (or equivalent) DP/PMS

12 230V AC UPS (or equivalent) ESD

13 230V AC UPS Battery (or equivalent) ESD

14 230V AC UPS Main Distribution Board (or equivalent) ESD

15 230V AC UPS DB (or equivalent) ESD

16 ICMS, Fire and Gas, ESD and DP with Sensor and Reference System ESD/HVAC

17 Telecom System ESD

18 Electrical and Auxiliary Machinery Rooms Ventilation Systems ESD

19 Engine Rooms Ventilation Systems ESD

20 Port/Stbd/Aft Machinery Rooms Ventilation Systems ESD

21 LQ HVAC ESD

22 Power Management System DRILL/DP

23 Dynamic Positioning System Test (DPS) CONTROL

24 Machinery Unmanned Test E0


1 Ballast System Semi Recovery Test

2 Aux. Cooling F.W. System S/T and SIT

3 460V LV Switchboard S/T


5 PA Coverage Measurement Normal Operation (machinery Running)




A.3 Category I systems for commissioning (as independent systems)

A.4 Category II systems for commissioning (as independent systems)

No. Name of the System

1 Lifeboat and Launch System

2 Fast Rescue Craft Launch Device System

3 Deck Crane

4 Emergency bilge system

5 Emergency Shut Off System (Quick closing valves)

6 Drill Floor Elevator

7 Escape Chute

8 Watertight Doors

9 Helideck Fire-Fighting System

10 Emergency Generator

11 Emergency Switchboard

12 Cement unit

13 230V AC UPS

14 230V AC UPS Battery

15 230V AC UPS Main Distribution Board

16 230V AC UPS DB

17 Dynamic Positioning System Test (DPS)


1 Misc.Lifesaving Equipment

2 Helicopter Refueling System

3 Ballast System

4 Dirty Drain System

5 Fire Main System

6 Inergen System

7 Fire Water Deluge System

8 Main Diesel Generator

9 Steam Generating System

10 Seawater Cooling System

11 Starting Air System For Main Engine

12 Thruster Seawater Cooling System

13 Sewage and Gray Water Discharge System

14 Anchor Winches

15 Thruster

16 Bilge System

17 Diesel Gen. F.W Cooling System

18 11Kv Switchboard (or equivalent)

19 690V HPU MCC (or equivalent)

20 690V Drilling VFD Switchboard (or equivalent)

21 690V Thruster VFD Switchboard (or equivalent)

22 230V AC UPS (or equivalent)

23 230V AC UPS battery (or equivalent)

24 230V AC UPS Main Distribution Board (or equivalent)

25 230V AC UPS DB (or equivalent)

26 Nav. and Signal Light

27 U-Light and Foghorn

28 Obstruction Light

29 Remote Sounding System

30 ICMS, Fire and Gas, ESD and DP with Sensor and Reference System

31 Telecom System

32 HPU For Vent Valve Operation

33 Ram Rig Travelling Yokes Main/Aux. (or equivalent)




34 Tong Lift System

35 LIR / HVAC Room, HVAC

36 Derrick Drilling Machine (DDM)/Top Drive

37 Rotary Table Main/Aux.(Including Power Slips)

38 DAT System

39 Guideline Winch and Tensioner System

40 LP/HP Nitrogen System

41 Mud Bucket

42 Bulk Powder Handling System

43 Mud Storage and Transfer System

44 Mud Mixing and Additive System

45 Mud Supply System

46 Mud Return and Treatment System

47 Mud, Brine, Oil Storage and Transfer System System

48 BOP Package

49 Diverter Package

50 Tubular and Riser Feeding Machine/Shuttle, Main Rig

51 Lower Guiding Arm including Heads and Rail, Main/Aux

52 Trolley for Riser Guiding

53 Riser Chute

54 DP/DC, Casing and Riser Fingerboard, bellyboard

55 Bridge Crane in Derrick

56 Hydraulic Roughneck

57 Multi Scope Arm

58 Hydraulic Cathead, Brake Out, including Wire

59 Tail in Arm

60 Manipulator Arm (MPMA/DFMA)

61 Pipehandler Crane

62 Riser Handling Crane (w/ Rail)

63 BOP Skid/X-Mas/ LMRP Transportation/Handling

64 Miscellaneous Guides

65 Access Basket

66 BOP Overhead Crane/X-mas Tree Overhead Crane

67 Overhull/underhull Guiding

68 Utility Winch and Manrider Winch

69 Burner Boom

70 Ringline HPU and Distribution System

71 Ramrig HPU and Distribution System

72 Dual Derrick Simultaneous Operation

73 Integrated BOP and Riser Handling System

74 Sludge system

75 Loop Check

76 Mud, Cement, Choke and Kill Manifolds

77 LQ HVAC

78 Power Management System

79 Navigation Equipment

80 Machinery Unmanned Test

81 Anchor Test

82 PA Coverage Measurement

No. Name of the System (Continued)




A.5 Category III systems for commissioning (as independent system)


1 Monorail System

2 Winches and Towing Equipment

3 Drill Water System

4 Deck Bilge System

5 Service Air System

6 Steam and Drain System

7 Seawater Service System

8 Aux. Cooling F.W. System

9 Diesel Oil Transfer and Drain System

10 Lub. Oil Storage, Transfer and Drain System

11 Distilled and Make-Up Water System

12 Potable and Sanitary Supply System

13 Cold Starter Generator

14 Marine Growth Protection System

15 Heat Trace System

16 460V LV Switchboard

17 230V LV Switchboard

18 Small Power DB

19 Lighting and Small Power

20 Shore Connection Box

21 Column and Pontoon Machinery Rooms Ventilation Systems

22 Electrical and Auxiliary Machinery Rooms Ventilation Systems

23 Engine Rooms Ventilation Systems

24 Port/Stbd/Aft Machinery Rooms Ventilation Systems

25 HVAC Duck Air Leak Test Procedure for Hull and Topside

26 ICCP

27 Pneumatically Operated Door

28 Provision Cold Store and Freezer System

29 Noise Level Measurement

30 Vibration Level Measurement

31 Helideck Drains



App.B DNV typical survey categorization for semi-submersible units during mechanical completion and commissioning ofmarine and drilling systems – Page 17

APPENDIX B DNV TYPICAL SURVEY CATEGORIZATION FOR SEMI-

SUBMERSIBLE UNITS DURING MECHANICAL COMPLETION AND


B.1 Category I systems for commissioning (for integration)

B.2 Category II systems for commissioning (for integration)







6 Thruster Seawater Cooling System S/T

7 Thruster S/T

8 11Kv Switchboard (or equivalent) PMS

9 690V HPU MCC (or equivalent) SIT

10 690V Drilling VFD Switchboard (or equivalent) SIT

11 690V Thruster VFD Switchboard (or equivalent) DP/PMS

12 230V AC UPS (or equivalent) ESD

13 230V AC UPS Battery (or equivalent) ESD

14 230V AC UPS Main Distribution Board (or equivalent) ESD

15 230V AC UPS DB (or equivalent) ESD

16 ICMS, Fire and Gas, ESD & DP With Sensor and Reference System

ESD/HVAC


18 Column and Pontoon Machinery Rooms Ventilation Systems ESD




22 LQ HVAC ESD


24 Dynamic Positioning System Test (DPS) CONTROL



1 Anchor Winches If Posmoor, TA/ATA

2 PA Coverage Measurement Normal operation

3 Ballast System Semi recovery test

4 Auxiliary Cooling Fresh Water System (#2) S/T & SIT






B.3 Category I systems for commissioning (as independent systems)

B.4 Category II systems for commissioning (as independent systems)




3 Deck Crane

4 Emergency Bilge System



7 Escape Chute

8 Column Room Elevators

9 Water Tight Doors


11 Inclining Experiment and Light Weight Measurement Procedure


13 Emergency SWBD

14 Cement Unit


1 Misc. Lifesaving Equipment



4 Ballast System

5 Fire Main system

6 Inergen system

7 Fire Water Deluge system



10 Seawater Cooling System

11 Starting Air System for Main Engine

12 Thruster Seawater Cooling System


14 Anchor Winches

15 Thrusters

16 Bilge System

17 Diesel Generator Fresh Water Cooling System

18 11Kv Switchboard (or equivalent)

19 Navigation and Signal Light



22 690V Thruster VFD Switchboard (or equivalent)

23 230V AC UPS (or equivalent)

24 230V AC UPS Battery (or equivalent)

25 230V AC UPS Main Distribution Board (or equivalent)

26 230V AC UPS DB (or equivalent)




30 HPU for Vent Valve Operation

31 Ram Rig Travelling Yokes Main and Auxiliary (or equivalent)

32 Tong Lift System

33 LIR/HVAC Room, HVAC

34 Draw-Work


36 Rotary Table Main / Auxiliary (Including Power Slips)




37 DAT System

38 Guideline Winch and Tensioner System

39 LP/HP Nitrogen System

40 Mud Bucket






46 Pontoon Mud, Brine, Oil Storage and Transfer System

47 BOP Package

48 Diverter Package

49 Tubular and Riser Feeding Machine/Shuttle, Main Rig

50 Lower Guiding Arm Includes Heads and Rail, Main and Auxiliary

51 Trolley For Riser Guiding

52 Riser Chute

53 DP/DC, Casing and Riser Fingerboard

54 Direct Lift Bridge Crane DP/DC/CSG, Main Rig / Auxiliary Rig


56 Multi Scope Arm (Casing Modem)

57 Hydraulic Cathead, Brake Out, Including Wire

58 Tail in Arm

59 Multi Manipulator Arm (DFMA)


61 Riser Handling Crane (with Rail)

62 Skids for BOP/X-mas tree/LMRP


64 Access/cherrypicker Basket

65 BOP / X-Mas Tree Overhead Crane

66 Underhull Guiding Main / Auxiliary

67 Overhull/underhull Guiding


69 Burner Boom


71 Ramrig HPU and Distribution System (or equivalent)

72 Dual Derrick Simultaneous Operation (if Fitted)

73 Integrated BOP and Riser Handling System

74 Sludge System

75 Loop Check

76 Drilling Control

77 Mud and Cement Manifolds


79 Anchor Test

80 Leakage detection system





B.5 Category III systems for commissioning (as independent system)


1 Monorail System

2 Air Winches and Towing Equipment


4 Deck Bilge System




8 Aux. Cooling FW system


10 Lub Oil Storage, Transfer and Drain System




14 MGPS (Marine Growth)


16 460V LV Switchboard (or equivalent)

17 230V LV Switchboard (or equivalent)

18 Small Power Distribution Boards



21 Column and Pontoon Machinery rooms ventilation systems

22 Electrical and Auxiliary Machinery rooms ventilation systems

23 Engine room ventilation systems

24 Port/ Stbd/Aft machinery rooms ventilation systems

25 HVAC Duct Air Leak Test Procedure for Hull and Topside

26 ICCP





31 Helideck Drains



App.C DNV typical survey categorization for “jack-up” units during mechanical completion and commissioning of marineand drilling systems – Page 21

APPENDIX C DNV TYPICAL SURVEY CATEGORIZATION FOR “JACK-

UP” UNITS DURING MECHANICAL COMPLETION AND


C.1 Category I systems for commissioning (for integration)

C.2 Category II systems for commissioning (for integration)







6 11Kv Switchboard PMS

7 690V HPU MCC SIT

8 690V Drilling VFD Switchboard SIT

9 230V AC UPS ESD

10 230V AC UPS Battery ESD

11 230V AC UPS Main Distribution Board ESD

12 230V AC UPS DB ESD

13 ICMS, Fire and Gas and ESD With Sensor and Reference System

ESD/HVAC





18 LQ HVAC ESD



21 Jacking motors Jacking trial

22 Jacking control system Jacking trial


1 Fire water lift with submerged pumps F&G/Deluge/control

2 PA Coverage Measurement Normal operation

3 Auxiliary Cooling Fresh Water System (#2) S/T and SIT






C.3 Category I systems for commissioning (as independent systems)

C.4 Category II systems for commissioning (as independent systems)




3 Deck Crane

4 Emergency Bilge System



7 Escape Chute

8 Water Tight Door


10 Inclining Experiment and Light Weight Measurement Procedure


12 Emergency SWBD

13 Cement Unit

14 Cantilever

15 Rack Chocking Device

16 Accommodation Unit Gangway Test

17 230V AC UPS

18 230V AC UPS Battery

19 230V AC UPS Main Distribution Board

20 230V AC UPS DB





4 Fire Main System

5 Inergen System

6 Fire Water Deluge System



9 Seawater Cooling system (including Buffer Tank alarms if Fitted)

10 Starting Air System for Main Engine


12 Bilge System

13 Diesel Generator Fresh Water Cooling System

14 11Kv Switchboard or equivalent



17 Navigation and Signal Light




21 ICMS, Fire and Gas and ESD

22 Telecommunication System

23 HPU for Vent Valve Operation

24 Ram Rig Travelling Yokes Main and Auxiliary (or equivalent)

25 Tong Lift System

26 LIR/HVAC Room, HVAC

27 Draw-Work


29 Rotary Table Main / Auxiliary (Including Power Slips)

30 Mud Bucket









36 Mud, Brine, Oil Storage and Transfer System

37 BOP Package

38 Diverter Package

39 Lower Guiding Arm Includes Heads and Rail, Main and Auxiliary

40 Direct Lift Bridge Crane DP/DC/CSG, Main Rig / Auxiliary Rig


42 Multi Scope Arm (Casing Modem)

43 Hydraulic Cathead, Brake Out, Including Wire

44 Tail in Arm

45 Multi Manipulator Arm (DFMA)


47 Skids for BOP/X-mas tree/LMRP


49 Access Basket

50 BOP / X-Mas Tree Overhead Crane


52 Burner Boom


54 Ramrig HPU and Distribution System

55 Dual Derrick Simultaneous Operation

56 Sludge System

57 Loop Check

58 Drilling Control

59 Mud and Cement Manifolds


61 Anchor Test (if fitted for temp and emergency mooring)

62 Ballast System/ Pre Load System

63 Spud can HP water injection





C.5 Category III systems for commissioning (as independent system)


1 Monorail System

2 Air Winches and Towing Equipment


4 Deck Bilge System





9 Lube Oil Storage, Transfer and Drain System




13 MGPS (Marine Growth) (if fitted for spud cans)


15 Small Power DB



18 HVAC Duct Air Leak Test Procedure for Hull and Topside





23 Helideck Drains



App.D DNV typical survey categorization for FPSO units during mechanical completion and commissioning of marine andproduction systems – Page 25

APPENDIX D DNV TYPICAL SURVEY CATEGORIZATION FOR FPSO

UNITS DURING MECHANICAL COMPLETION AND COMMISSIONING

OF MARINE AND PRODUCTION SYSTEMS

D.1 Category I systems for commissioning (for integration)

No. Name of the System Integrated with*

1 Watertight Doors and Hatches VMS

2 Communication – PA/GA ESD/PSD/F&G

3 ESD/PSD System ICSS

4 F&G Detection Systems ICSS

5 UPS for Critical Control (PCS/DP/PMS) ESD

6 HVAC Systems ESD/F&G

7 Main Power Generation and Distribution ESD/PMS

8 Main Fire Pump and Fire Water System ESD/F&G

9 Helifuel Fire Fighting System ESD/F&G

10 Specific Area Fire Fighting Systems i.e. Foam, CO2, Inergen, Water Spray Systems

ESD/F&G

11 Topsides Fire Water Deluge Systems ESD/F&G

12 Dynamic Positioning System (DPS), Steering and Propulsion and associated equipment

ICSS/ESD

13 Wellhead Control System (WHC) ESD/PSD

14 Riser Quick Connect/Disconnect System ESD/PSD

15 Offloading Quick Connect/Disconnect System including telemetry ESD/PSD/VMS

16 Position Monitoring System ICSS/ESD

* Where an integrated control and safety system is employed the control System architecture will define which systems theintegrated testing should interface with and may include ICSS/ESD/PSD/F&G/PCS/DP/PMS/VMS.




D.2 Category II systems for commissioning (for integration)


1 Ballast System ICSS

2 Fuel oil Transfer System VMS

3 Lube oil Transfer System VMS

4 Seawater Cooling System (Marine) VMS

5 Starting Air System For Main Engine (Marine) VMS

6 Bilge System VMS

7 Inert Gas System VMS

8 Cargo Pumping, Control and Monitoring Systems PSD

9 Production Riser System PSD/ESD

10 Topside Nitrogen System PSD/ESD

11 Inlet Manifold PSD/ESD

12 Test Manifold PSD/ESD

13 Separation System PSD/ESD

14 Test Separation System PSD/ESD

15 Process Heating System PSD/ESD

16 Process Cooling System PSD/ESD

17 Closed Drain System PSD/ESD

18 Produced Water Treatment and Disposal System PSD/ESD

19 Seawater Treatment and Injection System PSD/ESD

20 Gas Treatment System PSD/ESD

21 Glycol Regeneration Systems PSD/ESD

22 Fuel Gas Treatment System PSD/ESD

23 Process Relief and Depressurisation Systems PSD/ESD

24 Gas Disposal System PSD/ESD

25 Gas Compression System PSD/ESD/PCS

26 Oil Export System PSD/ESD

27 Gas Export System PSD/ESD

28 Pipeline Pigging Systems PSD/ESD

29 Methanol Storage and Injection Systems PSD/ESD

30 Chemical Storage and Injection Systems PSD/ESD

31 Export Riser System PSD/ESD

32 Gas Injection Systems PSD/ESD

33 Machinery Unmanned/Watch Call Alarm System (E0) VMS

34 Offshore Crane ESD

35 Helideck Status Lights (Wave off) F&G

36 Topside Power Generation System ESD

37 Steam System ESD





D.3 Category I systems for commissioning (as independent systems)



2 Emergency Lighting

3 Navigation Lights

4 Structural Marking (U-Light and Foghorn)

5 Steering Gear and Control System

6 Watertight Doors and hatches

7 Diving System

8 Communication – GMDSS, PA/GA, PABX

9 ESD/PSD System

10 F&G Detection Systems

11 Emergency Generator and Emergency Switchboard System

12 Emergency Generator Starting System (Air or Battery)

13 Emergency Motor Control Centre (to control fire pump and other emergency services)

14 Transitional Source of Power

15 UPS for PA/GA/PABX

16 UPS for GMDSS

17 UPS for emergency lighting

18 UPS ICSS system *define or UPS for ESD/PSD/F&G/PCS/DP/PMS

19 Fuel Oil System for Main Power Generation

20 Lube oil System for Main Power Generation

21 Fresh Water Cooling System for Main Power Generation

22 HVAC for propulsion system

23 HVAC for Main Power Generation

24 Main Power Generation and Distribution




28 Escape routes

29 Liferafts and Escape to Sea


31 Main Fire Pump and Fire Water System

32 Helifuel Fire Fighting System


34 Topsides Fire Water Deluge Systems

35 Deck Foam System

36 Dynamic Positioning System (DPS), Steering and Propulsion and associated equipment

37 Wellhead Control System (WHC)

38 Riser Quick Connect/Disconnect System

39 Offloading Quick Connect/Disconnect System

40 Position Monitoring System




D.4 Category II systems for commissioning (as independent systems)



2 Helicopter Refuelling System

3 Ballast System

4 Hazardous Open Drain System

5 Non Hazardous Open Drain System

6 Mooring Line Tension Measuring System

7 Fuel oil Transfer System

8 Lube oil Transfer System

9 Steam Generating System (Marine)

10 Seawater Cooling System (Marine)

11 Starting Air System For Main Engine (Marine)

12 Control Air System


14 Anchoring System and Winches

15 Thrusters not part of steering or propulsion

16 Bilge System

17 Main Lighting Systems

18 Topside Umbilical Termination Unit

19 Turret Swivel Systems

20 Inert Gas System

21 Cargo Pumping, Control and Monitoring Systems

22 Production Riser System

23 Topside Nitrogen System

24 Inlet Manifold

25 Test Manifold

26 Separation System

27 Test Separation System

28 Process Heating System

29 Process Cooling System

30 Closed Drain System

31 Produced Water Treatment and Disposal System

32 Seawater Treatment and Injection System

33 Gas Treatment System

34 Glycol Regeneration Systems

35 Gas Compression System

36 Fuel Gas Treatment System

37 Process Relief and Depressurisation Systems

38 Gas Disposal System

39 Oil Export System

40 Gas Export System

41 Pipeline Pigging Systems

42 Methanol Storage and Injection Systems

43 Chemical Storage and Injection Systems

44 Export Riser System

45 Gas Injection Systems

46 HVAC for Hazardous Areas

47 LQ HVAC

48 Individual HVAC Systems (LER, PCR, Topside Power Generation Enclosure)

49 HVAC for Engine Rooms and other Machinery spaces


51 Machinery Unmanned/Watch Call Alarm System (E0)

52 Offshore Crane

53 Helideck Status Lights (Wave off)




D.5 Category III systems for commissioning (as independent system)

54 Topside Power Generation System


1 Deck Bilge System










11 Small Power DB

12 Small Power



15 Impressed Current Protection System (ICCP)



18 Helideck Drains




App.E DNV typical survey categorization for FSO units during mechanical completion and commissioning of marine andproduction systems – Page 30

APPENDIX E DNV TYPICAL SURVEY CATEGORIZATION FOR FSO

UNITS DURING MECHANICAL COMPLETION AND COMMISSIONING

OF MARINE AND PRODUCTION SYSTEMS

E.1 Category 1 systems for commissioning (for integration)

E.2 Category II systems for commissioning (for integration)


1 Watertight Doors and Hatches VMS

2 Communication – PA/GA ESD/PSD/F&G

3 ESD/PSD System ICSS

4 F&G Detection Systems ICSS

5 UPS for Critical Control (PCS/DP/PMS) ESD

6 HVAC Systems ESD/F&G

7 Main Power Generation and Distribution ESD/PMS

8 Main Fire Pump and Fire Water System ESD/F&G

9 Helifuel Fire Fighting System ESD/F&G

10 Specific Area Fire Fighting Systems i.e. Foam, CO2, Inergen, Water Spray Systems ESD/F&G

11 Inlet Flowline or Riser Quick Connect/Disconnect System ESD/PSD

12 Offloading Quick Connect/Disconnect System including telemetry ESD/PSD/VMS




1 Ballast System ICSS

2 Fuel oil Transfer System VMS

3 Lube oil Transfer System VMS

4 Seawater Cooling System (Marine) VMS

5 Starting Air System For Main Engine (Marine) VMS

6 Bilge System VMS

7 Inert Gas System VMS

8 Cargo Pumping, Control and Monitoring Systems PSD

9 Inlet flowline or riser System PSD/ESD

10 Oil Export System PSD/ESD

11 Pipeline Pigging Systems PSD/ESD

12 Methanol Storage and Injection Systems PSD/ESD

13 Chemical Storage and Injection Systems PSD/ESD

14 Export Riser System PSD/ESD

15 Machinery Unmanned/Watch Call Alarm System (E0) VMS

16 Offshore Crane ESD

17 Helideck Status Lights (Wave off) F&G





E.3 Category I systems for commissioning (as independent systems)



2 Emergency Lighting

3 Navigation Lights

4 Structural Marking (U-Light and Foghorn)

5 Watertight Doors and hatches

6 Diving System

7 Communication – GMDSS, PA/GA, PABX

8 ESD/PSD System

9 F&G Detection Systems

10 Emergency Generator and Emergency Switchboard System

11 Emergency Generator Starting System (Air or Battery)

12 Emergency Motor Control Centre (to control fire pump and other emergency services)

13 UPS for PA/GA/PABX

14 UPS for GMDSS

15 UPS for emergency lighting

16 UPS ICSS system* define or UPS for ESD/PSD/F&G/PCS/DP/PMS

17 Fuel Oil System for Main Power Generation

19 Lube oil System for Main Power Generation

20 Fresh Water Cooling System for Main Power Generation

21 HVAC for propulsion system

22 HVAC for Main Power Generation

23 Main Power Generation and Distribution




28 Escape routes

29 Liferafts and Escape to Sea


31 Main Fire Pump and Fire Water System

32 Helifuel Fire Fighting System


34 Fire Water Deluge Systems

35 Deck Foam System

36 Inlet Flowline or Riser Quick Connect/Disconnect System

37 Offloading Quick Connect/Disconnect System





E.4 Category II systems for commissioning (as independent systems)


1 Misc.Lifesaving Equipment


3 Ballast System

4 Hazardous Open Drain System

5 Non Hazardous Open Drain System

6 Mooring Line Tension Measuring System

7 Fuel oil Transfer System

8 Lube oil Transfer System

9 Steam Generating System (Marine)

10 Seawater Cooling System (Marine)

11 Starting Air System for Main Engine (Marine)

12 Control Air System


14 Anchoring System and Winches

15 Thrusters not part of steering or propulsion

16 Bilge System

17 Main Lighting Systems

18 Inert Gas System

19 Cargo Pumping, Control and Monitoring Systems

20 Gas Disposal System

21 Oil Export System

22 Pipeline Pigging Systems

23 Methanol Storage and Injection Systems

24 Chemical Storage and Injection Systems

25 Export Riser System

26 HVAC for Hazardous Areas

27 LQ HVAC

28 Individual HVAC Systems (LER, PCR, Topside Power Generation Enclosure)

29 HVAC for Engine Rooms and other Machinery spaces


31 Machinery Unmanned/Watch Call Alarm System (E0)

32 Offshore Crane

33 Helideck Status Lights (Wave off)




E.5 Category III systems for commissioning (as independent system)

E.6 Category I systems for commissioning (class notation CRANE)


1 Deck Bilge System










11 Small Power DB

12 Small Power



15 Impressed Current Protection System (ICCP)



19 Helideck Drains


1 Deck Crane

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APPENDIX F DNV REQUIREMENTS RELATED TO MARINE, UTILITY AND SAFETY SYSTEMS

F.1 Stability and watertight integrity

System / Equipment Description

DNV OS / Rule Reference

DNV Surveillance Focus

Inclining Test DNV-OS-C301Ch.2 Sec.1 [3.1]

— Confirm the results of an inclining test are gathered for the first unit of a design when it is near to completion as possible, to determine accurately the light ship data (weight and position of center of gravity).

Watertight / Weathertight Doors and Hatches

DNV-OS-C301 Ch.2 Sec.2 [9.1]

— Pressure testing of watertight doors and hatches:

- Before installation (i.e. normally at the manufacturer), confirm that watertight doors or hatch covers are hydraulically tested with exposure to the side most prone to leakage.

- The test pressure shall correspond to the pressure height + 0.05 N/mm2 (5 m water), and the acceptance criteria shall be: - No leakage for doors or hatch covers with gaskets, maximum water leakage 1 litre per minute for doors or hatch covers with metallic

sealing.

DNV-OS-C301 Ch.2 Sec.2 [9.2]

— Hose testing of all watertight and weathertight doors and hatch covers:

- After installation onboard, confirm watertight and weathertight doors or hatch covers are hose tested. The water pressure shall be at least 0.2 mm2 (2 bar), and the nozzle shall be held at a distance of maximum 1.5 m from the door or hatch cover. No leakage shall be accepted.

- As an alternative to hose testing, chalk testing may be applied under special circumstances, upon acceptance by all parties involved.

DNV-OS-C301 Ch.2 Sec.2 [9.3]

— Function testing of watertight doors and hatch covers — After installation onboard the operation, control and alarm functions for all watertight doors and hatch covers shall be tested. The

following shall be verified:

- For each door, the total closing time shall not be less than 30 seconds or more than 60 seconds.- It shall be possible to close all doors or hatch covers in one group simultaneously within 60 seconds from the control room.- It shall be possible to open and close the doors or hatch covers three times by means of a local device and stored energy.- It shall be possible for a person to pass through the doorway or hatchway and at the same time hold both handles in the “open

position”.- It shall be possible to open the door or hatch cover locally from both sides, after being closed centrally, and the door or hatch cover

shall close automatically after such opening.- The door or hatch cover shall be mechanically locked in a closed position.- The light and sound signals shall give warning when the door or hatch cover is closed centrally.- The remote position indicator for doors or hatch covers shall function properly.- The alarms for the following conditions shall function properly: - Start of standby pump, loss of power to control, alarm and indicating system, low pressure (below lowest permissible).

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F.2 Fabrication and testing of offshore structures


DNV OS / Rule Reference


Tanks DNV-OS-C401 Ch.2 Sec.4 [2.1]

— Testing of Tightness— Confirm that all tanks are tested for tightness. The test may be performed as a hydraulic test using water. Alternatively, tightness may

be confirmed by use of compressed air and an efficient indicating liquid. Void spaces not part of the structural integrity in the accidental limit state (ALS) can normally be omitted from this tightness test. A void space defined as a confined space is typically not intended to carry liquid cargo, ballast or fuel. Gas tightness of e.g. boundaries between cofferdams/pump room and adjacent non-hazardous area, may be subject to appropriate methods accepted by the purchaser.

— Tightness test by compressed air and an effective indicating liquid shall be carried out before protective coating has been applied. A thin layer (< 50 m) of primer with documented chemical composition may be applied prior to testing. Tightness may also be confirmed by the following methods: vacuum testing of individual welds, injection of air into root gap of fillet welds (fillet air test). Tightness testing of continuous automatic and multipass semiautomatic weld processes in butt welds of plated boundaries may be omitted.

— If compressed air and an efficient indicating liquid are used, the air pressure shall not exceed 0.2 bar and shall be reduced to a smaller value, but not less than 0.15 bar before inspection. The method shall give clear indications of small leaks. Care should be taken so that the pressure in the tank does not exceed 0.2 bar above atmospheric pressure because of unexpected raise in ambient temperature, falling atmospheric pressure or otherwise. The pressure shall be measured by an accurate method, such as a U-shaped tube with water. Means should be provided to release pressure in emergency case.

— If water is applied, the pressure shall not be less than 25 kN/m2 at the top of the tank. The outside of the tank shall be dry and clean.— For hose testing, the hose pressure shall be at least 200 kN/m2 and applied at a maximum distance of 1.5 m. The nozzle inside diameter

shall be at least 12.0 mm.

DNV-OS-C401 Ch.2 Sec.4 [3.1]

— Structural Tests— Confirm that at least one of several identical tanks undergo a structural test. By agreement, the test shall be carried out by applying

water. In agreement with the purchaser, the structural test may be omitted for a series of sister vessels. Protective coating may be applied before a structural test is carried out.

— Bulkheads between tanks arranged to carry different liquids shall be hydraulically tested from at least one side.— The test pressure height shall be taken as the design pressure height for load case a) as defined in the relevant offshore object standard.

The pressure shall be maintained for at least 20 minutes. The filling rate shall be restricted to avoid excessive dynamic design pressure.— The structural test is considered successful if no significant deformations or other damages have developed during the test.— Confirm that closing appliances for access openings in decks, bulkheads (etc.) which shall be watertight, are separately tested before

installation. Structural testing of other parts outside tanks may be required.— If structural tests reveal weaknesses in the structure, further testing is required.

Corrosion Protection Systems

DNV-OS-C401Ch.2 Sec.5 [1.5]

— Installation of impressed current cathodic protection system:

- Confirm that testing of the proper functioning of the systems is carried out. The test method and results shall be reported.- Final testing and acceptance of the system shall be performed after installation.

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F.3 Marine and machinery systems and equipment


DNV OS /Rule Reference


All Systems / Equipment

DNV-OS-D101Ch.3 Sec.1[5.1 to 5.3]

— General

- Commissioning shall be in accordance with submitted procedures reviewed and approved by DNV in advance of the commissioning. Commissioning shall be witnessed by a surveyor and is considered complete when all systems, equipment and instrumentation are operating satisfactorily.

— System and Equipment Checks

- During commissioning, all items of pipework and equipment shall be checked for compliance with approved documentation and commissioning procedures.

— Functional Testing

- During commissioning, the systems shall be functionally tested, as practicable, in accordance with approved procedures.

All Piping Systems DNV-OS-C301Ch.2 Sec.2 [3.2]

— Confirm positive functional testing results of closure devices in way of watertight boundaries from control room / station, as well as positive remote confirmation of the same closure devices.

— Where valves are provided at watertight boundaries to maintain watertight integrity, these valves shall be capable of being operated from a control room. Valve position indicators shall be provided at the remote control station.

DNV-OS-D101Ch.2 Sec.1 [1.7]

— For remotely controlled valves, confirm that a failure in power supply (electrical, hydraulic, and pneumatic) does not cause opening of closed valves or closing of open valves on fuel oil tanks and in cooling water system for propulsion and power generating machinery.


— Confirm that all valve bodies are subject to a hydrostatic test by the manufacturer, at a pressure equal to 1.5 times the nominal pressure. The nominal pressure is the maximum allowable working pressure at room temperature. The test pressure need not be more than 70 bar in excess of the nominal pressure. For valves fitted on unit or installation’s side and bottom, the test pressure shall not be less than 5 bar.

— Confirm that butterfly valves fitted on unit or installation’s side and bottom are hydrostatically tested at a pressure equal to 5 bar applied independently on each side of the closed disc.

DNV-OS-D101Ch.2 Sec.6 [6.1/6.2]

— Hydrostatic testing required after assembly on board — The piping shall be hydrostatically tested in accordance with the following:

- Fuel oil piping, heating coils in tanks, bilge, ballast and fire pipes, steam pipes, compressed air pipes and feed pipes of class III: - 1.5 maximum working pressure, minimum 4 bar.- Hydraulic piping: - 1.5 maximum working pressure for 15 minutes. Test pressure need not exceed working pressure by more than 70 bar.- Piping systems made from non-metallic material: - 1.5 maximum working pressure, minimum six (6) bar, minimum duration one (1) hour.


— Confirm that all piping systems are properly flushed, checked for leakage and functionally tested under working conditions.

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Pump Hydrostatic Testing


— Confirm that all pump housings, excluding those for pumps which transfer stored crude oil, are hydrostatically tested to 1.5 times the maximum working pressure. The test pressure need not exceed the maximum working pressure by more than 70 bar.

- Pumps for transfer of crude oil shall be tested at 1.3 times the maximum working pressure, and to a minimum of 14 bar. - For centrifugal pumps, the maximum working pressure shall be the maximum pressure head on the head-capacity curve. - For displacement pumps, the maximum working pressure shall not be less than the relief valve opening pressure.- The steam side of the steam driven pumps shall be hydraulically tested to 1.5 times the steam pressure.

— Hydrostatic testing of pump housings on submerged pumps is normally not required.

Pump Capacity Testing


— Confirm that pump capacities are checked with the pumps running at design condition (rated speed and pressure head, viscosity, etc).

- The capacity test need not be applied for pump designs where satisfactory tests have been previously performed and documented.

Ballast, Bilge and Drainage Systems - General


— Ballast and Bilge System

- Confirm functional redundancy of system such that any tank may be de-ballasted by either pump. - Confirm installed pump capacity meets design requirements.- Confirm functionality of the central Ballast and Bilge Control Station testing.- Witness final comprehensive testing of the Ballast and Control System.- Confirm self-closure of ballast valves in emergency situations and remote status indication.- Confirm power supply function from normal and emergency switchboards.- Confirm status indications remain following shutdown of power generation (UPS function).

— Bilge System

- Confirm functional redundancy of system such that the bilge of any tank / compartment may be removed by either pump.- Confirm free draining arrangements for tanks, compartments and voids fitted with such.- Confirm location and function of both branch bilge suction lines fitted within pump / essential machinery rooms. - Confirm location and function of emergency bilge suction within pump / essential machinery rooms. - Confirm installed pump capacity meets design requirements.

Ballast, Bilge and Drainage Systems – Column Stabilized Units and Installations


— Confirm that the general requirements are complied with, unless otherwise specified herein.

- The ballast system is to provide the capability to bring the unit or installation, while in an intact condition, from the maximum normal operating draught to a severe storm draught, within three (3) hours.

Lubricating Oil Systems


Confirm proper function of remote shut-off of normally open valves as fitted to lube oil tanks above double bottom and located below top of the tank or overflow outlet.

— This requirement may be waived for small tanks with volume less than 0.5 m3, and tanks which upon unintended closing of the valves, may result in loss of main functions.



DNV Surveillance Focus (Continued)

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Fuel Oil Systems DNV-OS-D101Ch.2 Sec.4 [3.4 to 3.6 and 3.9]

— Fuel Oil Tank Valves

- Confirm proper function from central position outside engine room of remote shut-off valves as fitted to fuel oil (FO) tanks and located below top of the tank or overflow outlet. Also, confirm the proper location of remote control station.

— Arrangement of Valves

- Confirm location and proper function of fuel oil line shut-off valves fitted on or nearby engine room bulkheads- Confirm all valves in the fuel oil system shall be controllable from positions above the floor plates.

— Oil Filters

- Confirm duplex filter arrangement such that it prevents unintended opening of a filter under pressure.


— Remote Stop of Fuel Oil Pumps and Fans— Confirm function of remote emergency stop of the power supply to the following pumps and fans from a central place outside the

engine and boiler room:

- Fuel oil transfer pumps- Fuel oil booster pumps- Nozzles cooling pumps when fuel oil is used as coolant- Fuel oil purifiers- Pumps for oil-burning installations- Fans for forced draught to boilers- Fans for ventilation of engine and boiler rooms- Thermal oil circulation pumps- Hydraulic oil pumps.

Rules for ShipsPt.4 Ch.8 Sec.8A400

— Fuel Oil Pre-Heaters— Confirm proper function of oil temperature control (Max 50ºC) and related manual interlock for over temperature.

Thermal Oil Systems Rules for ShipsPt.4 Ch.7 Sec.3B100 / B200 / B300 / B600 / B700

— Confirm function of mechanical ventilation, automatic fire detecting and an approved fixed fire-extinguishing system, operated from an easily accessible place outside the room.

— Confirm location and proper function of remote stop of ventilation, oil-burner and oil-booster pumps outside the room. Ventilating ducts shall be possible to close by means of flaps.

— Confirm proper automatic function of minimum circulation through the heater in case consumers are shut-off. — Confirm local and remote manual operation, from an easily accessible location outside the heater room, of stop-valves fitted to oil

fired heater main inlet and main outlet pipes for thermal-oil.— Confirm local start, stop and remote manual stop, from an easily accessible location outside the heater room, of circulation pumps

and heater burners.— For exhaust fired thermal oil heaters, confirm function of temperature control and bypass arrangements and fire extinguishing

arrangements as fitted.— Confirm that the circulating pumps remain in operation at least for 10 minutes after stop of burners.




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Thermal Oil Systems(Continued)

Rules for ShipsPt.4 Ch.7 Sec.7E100 / E200

— Confirm proper automatic control of thermal-oil outlet temperature to be able to keep the oil temperature within the limits for safe operation under all load conditions.

— Confirm alarm and automatic shutdown of burner for the following:

- Thermal Oil: Temperature Outlet High, Flow Low and Pressure Low- Flue Gas: Temperature High- Expansion Tank: Level Low, Temperature High (alarm only)- Forced Draft: Fan Stopped- Heavy Fuel Oil: Temperature or Viscosity High / Low (alarm only)- Flame: Flame Ignition and / or Flame Failure.

Rules for ShipsPt.4 Ch.7 Sec.8D600

— After onboard installation, confirm that the system is functionally and capacity tested according to an approved test program. The test procedure shall include flow measurements for each coil, covering the whole range of heater loads. The heater system charge shall be a thermal-oil, which will allow maximum heater rating to be tested.

Feed Water and Condensation System


— Confirm the preheating arrangement maintains the temperature above 80ºC when boilers are operated at maximum load during normal service.

Pneumatic Starting Arrangements

DNV-OS-D101Ch.2 Sec.4 [10.2]

— Confirm starting systems for internal combustion engines and gas turbines shall have capacity for a number of starts specified below without reloading of air receivers:

- Engines for driving electric generators and engines for other purposes – three (3) starts each, total capacity need not exceed six (6) starts

- Engines for driving emergency generators – six (6) starts, automatic attempts shall be limited to three (3) starts

— Confirm if a starting system serves two or more of the above specified purposes, the capacity of the system shall be the sum of the capacity requirements.

— Confirm for multi-engine propulsion plants, the capacity of the starting air receivers shall be sufficient for three (3) starts per engine. However, the total capacity shall not be less than twelve (12) starts and need not exceed eighteen (18) starts.

— Confirm compressors are installed with total capacity sufficient for charging air receivers of capacities specified in 201 and 202 from atmospheric to full pressure in the course of one (1) hour.


— Confirm that failed automatic starting attempts are limited to restrict consumption of starting energy.

HVAC System DNV-OS-D101Ch.2 Sec.4 [11.3]

— Confirm for machinery spaces that the capacity of the ventilation plant is such as to provide comfortable working condition in the engine room, to supply the necessary combustion air to the diesel engines, boilers, and to prevent heat-sensitive apparatus from overheating.

- Confirm that air is distributed to all parts of the engine room, so that pockets of stagnant hot air are avoided. Special considerations should be given to areas with large heat emission and to all normal working areas, where reasonably fresh and clean outdoor air should be provided through adjustable inlet devices.

- Confirm for units with unrestricted location, the temperature rise from air intake to air passing from the engine room up to the casing should be maximum 10ºC for an outside air temperature of maximum +35ºC.

— Confirm that the air exhaust fans maintain a slight positive pressure in the engine room, which does not exceed 50 Pa.— Confirm that hazardous enclosed spaces receives twelve (12) air changes per hour and non-hazardous enclosed spaces receives six

(6) air changes per hour.




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Use of Gas and Crude Oil for Auxiliary Boilers and Turbines

DNV-OS-D101Ch.2 Sec.4 [12.3.11]

— Confirm the following fault conditions shall release alarm and automatic shutdown of gas and crude oil supply:

- Detected gas of maximum 20% of the lower explosive limit (LEL) in the ventilated duct. For crude oil fired units, detection of liquid at all low points in the ventilated duct may be accepted as an alternative

- Detected gas of maximum 20% of the LEL in engine and boiler room. This requirement may be dispensed with if the ducting has no opening (e.g. hood) into the machinery space

- Loss of ventilation in the duct- Abnormal pressure variation in the fuel supply line- Detected fire in the engine and boiler room.

General Marine Equipment


— Confirm that a space is pressurized to make it non-hazardous, and is provided the following minimum requirements:

- Pressurization air is taken from a safe area- An alarm system is fitted to indicate loss of air pressure- An air-lock system with self-closing doors are fitted- An exhaust outlet is located in a non-hazardous area- A combustion air inlet is located in a non-hazardous area.

— Automatic shutdown is arranged to prevent overspeeding in the event of ingestion of flammable gas.

Jacking Gear Machinery

DNV-OS-D101Ch.2 Sec.5 [3.11]

— Confirm that the following control and monitoring arrangements are present:

- Remote indication and alarm if a brake is not released when power applied to the motors. The brake alarm shall be given by an independent mechanical sensor

- Remote indication and alarm for overheating of an electric motor- A permanent remote indication of loads during jacking and retrieval is provided. For a lattice leg unit, the load per chord is as a

minimum to be presented. Confirm that an alarm signal is given when the maximum load is exceeded.

DNV-OS-D101Ch.2 Sec.5 [3.12]

— Confirm that a spin test and contact pattern test is carried out according to accepted methods.

DNV-OS-D101Ch.2 Sec.5 [3.14]

— Confirm that jacking machinery is tested with the highest specified lifting and descending load. The duration shall reflect one operating cycle.

— Confirm that the interlock is tested.




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Thrusters DNV-OS-D101Ch.2 Sec.5 [5.1]Rules for ShipsPt.4 Ch.14 I100

— Shipboard testing— After installation on board the vessel, and prior to seatrial, the steering gear shall be subjected to the required hydrostatic and running

tests. The test shall as a minimum comprise of:

- Hydrostatic testing;- Parts of steering gear that has not been pressure tested at workshop shall be tested at 1.5 times design pressure- Assembly shall be tested at a minimum 1.5 times maximum working pressure- Function testing of the steering gear- Testing alarms and indicators- Autostart test of power units- Testing all start and stop functions- Test control transfer between bridge and local control- Test safety valve setting (if not performed during in Workshop)- Testing function and setting of overcurrent protection- Test and check functions and settings in frequency converter (if applicable)- Check mechanical rudder indicator.

— On double rudder installations where two units are synchronized by mechanical means, confirm that mutual adjustment is tested.


— Confirm that alarms are provided for the following faults:

- Stop of prime mover- Power failure of remote control system- Power failure of alarm system- Low level in lubrication oil tank (if provided)- Low level in hydraulic supply tank- Low pressure in hydraulic system- High level in bilge well.

— The following additional alarms shall be provided and tested for propulsion thruster azimuth gear power units:

- Power failure- Phase failure- Motor overload- High lubrication oil inlet temperature.

Windlasses, Winches and Chain stoppers for Temporary or Limited Use


— Confirm that a riser disconnect system is fitted, such that it is not possible to release the anchor lines while risers are connected to the unit. Confirm that a special safety system preventing this is provided.

— Confirm that it is possible to carry out a controlled lowering of the wire rope / chain in case of an emergency. — Confirm that it is possible to release the brakes or stoppers from a protected area close to the winch itself, and from a manned control

room or bridge. During the emergency release, it shall be possible to apply the brakes once in order to halt the lowering and therefore releasing them again.

— Confirm that an audible alarm system exists to warn that remote operation of the windlasses or winches shall take place.— Confirm that winches are fitted with a load indicator, emergency stop system and an audible alarm system in case of overload.




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F.4 Electrical installations




Main Electric Power Supply System


— Confirm the main power supply system has the capacity to supply power to all services necessary for maintaining the ship in normal operation without recourse to the emergency source of power.


— Confirm that electrical supply to equipment necessary for station keeping, propulsion and steering, and to ensure safety of the offshore unit, will be maintained or immediately restored in case of loss of any one of the generators in service, including:

- Confirmation that starting and connection to the main switchboard of the standby generator occurs preferably within 30 seconds, but not more than 45 seconds after loss of power.


— Confirm system for start, stop and load sharing between generators, if controlled by an automation system. The following alarms shall be confirmed:

- Power failure to the control system- Starting failure of prime mover- High and low frequency- High and low voltage- Excessive percentage difference in loads (kVA or alternatively both kW and kVAr) taken by the generators, with the necessary time

delay, when in symmetrical load sharing mode.— Confirm simultaneous connection of generators on to the same bus is not possible.— Confirm restoration of power in case of loss of any one of the generators in service.— Confirm all generator sets are arranged with systems for starting during blackout.

Rules for ShipsPt.4 Ch.3 Sec.1I300

— Confirm that propulsion engines are tested for four (4) hours at 100% power.— Confirm that engines for auxiliary purposes are tested at 100% power for duration sufficient for conducting all related inspections or

measurements, however, not less than one (1) hour.

- Confirm insulation of hot surfaces during maximum load by measuring surface temperature.

Switchgear and Control Assemblies


— Confirm that the following tests are performed on switchgear and controlgear assemblies (may be submitted by the manufacturer):

- Function test: all basic functions including auxiliary functions- Insulation resistance test- High voltage test.

— Confirm that all circuits are verified installed as shown in the as-built documentation. Control and protection shall be tested for correct functioning.

— Confirm that switchgear or control gear assemblies are subject to complete function tests after installation onboard.— Confirm that switchgear and assemblies with rated voltage above 60 V is subject to a voltage test between the circuits and between

live parts and the enclosure. The test voltage shall be minimum equal to twice the rated voltage plus 1000 V with a minimum of 1500 V. The test voltage shall be applied for 1 minute at any frequency between 25 and 100 Hz.

— For switchgear assemblies with rated voltage below 60V, confirm that the test voltage shall be a minimum of 500 V. — Confirm that the insulation resistance test is completed prior to and on completion of the voltage test. Confirm that the testing does

not cause any reduction in the switchgear insulation level. The insulation level shall be at least 1 MOhm.

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Emergency Power Supply System


— Confirm the emergency source of power to be automatically connected to the emergency switchboard in case of failure of the main source of electric power. If the power source is a generator, confirm that it is automatically started within 45 seconds and supplies at least the services required by transitional power.

— Confirm the electrical power available to be sufficient to supply all services essential for safety in an emergency. Hence, the emergency switchboard and emergency distribution boards are not to be considered as part of the main distribution system, even though supplied from such during normal operation.

— Confirm that in normal operation, the emergency switchboard is supplied from the main switchboard by an interconnecting feeder, which shall be protected against overload and short circuit at the main switchboard, and shall be disconnected automatically at the emergency switchboard upon failure of the supply from the main source of electrical power.

— Confirm provision for the periodic testing of the complete emergency system and the testing of automatic starting arrangements.


— Confirm that emergency generating sets are equipped with a starting device with a stored energy capability of at least three (3) consecutive starts. Confirm that a second source of energy is provided for an additional three (3) starts within 30 minutes, unless manual starting can be demonstrated to be effective within this time. One starting motor is sufficient.

— The duration of each start shall be minimum 10 seconds.


— Confirm governor conditions for emergency generator sets when their total consumer load is applied suddenly, or;— The total consumer load is applied in steps, subject to:

- The total load is to be supplied within 45 seconds since power failure on main switchboard- The maximum step load is declared and demonstrated- The power distribution system is designed such that the declared maximum step loading is not exceeded- The compliance of time delays and loading sequence with the above are demonstrated at ship’s trails.

Rules for ShipsPt.4 Ch.3 Sec.1I400

— Engines for auxiliary purposes to be tested at 100% power for a duration sufficient for conducting all related inspections or measurements, however not less than one (1) hour.

— Confirm sufficient insulation of hot surfaces during maximum load by measuring surface temperature.

Battery Systems DNV-OS-D201Ch.2 Sec.2 [4.1]

— Confirm that each charging device has sufficient rating for recharging to at least 80% capacity within 10 hours while system has normal load.

— Confirm that an alarm is given at a manned control station if the charging of a battery fails.— Confirm that an alarm shall be given if the battery is discharged.

- A single common alarm signal to a central alarm system may be accepted for the two (2) alarms listed here;- If other alarms are included in the common alarm signal, it must be ensured that an active alarm will not prevent initiation of any

new alarm with its audible and visual indication.

Engines with Electric Starter

DNV-OS-D201Ch.2 Sec.2 [5.1.1]

— Confirm that each battery has sufficient capacity for at least the following start attempts of the engines being normally supplied:

- Twelve (12) starts for each reversible engine;- Six (6) starts for each non-reversible engine connected to a reversible propeller or other devices enabling the engine to be started

with no opposing torque.- The duration of each starting shall be a minimum of 10 seconds.

— For multi-engine propulsion plants, it shall be confirmed the capacity of the starting batteries is sufficient for three (3) starts per engine, total capacity shall not be less than 12 starts and need not exceed 18 starts.

— For auxiliary engines, it shall be confirmed that each starting battery has sufficient capacity for at least three (3) start attempts of each of the engines being normally supplied. The duration of each starting shall be taken as a minimum of ten (10) seconds.




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Rotating Machinery - General

DNV-OS-D101Ch.2 Sec.1 [2.3.13]

— Confirm that machinery can be brought into operation from the «dead ship» condition within 30 minutes using only the facilities installed onboard.


— Confirm that electrical machines are tested at the manufacturer’s works with the tests carried out on a prototype of a machine or the first of a batch of machines. Confirm that routine tests are carried out on each machine.

— The type tests (TT) and routine tests (RT) that are required for generators include:

- Air gap measured or verified; visual inspection, verification of data on name plate; verification of degree of enclosure protection; vibration or balance of the machine including operation of the bearing or lubrication system during running tests; overspeed tests (20% in excess of rated r.p.m. for two (2) minutes); withstand voltage test (1 minute); windings resistance to be measured; temperature-rise test at full load; measurement of insulation resistance; overload or overcurrent test; measuring of voltage regulation during steady and transient loading and unloading (AC generator); measuring of open circuit voltage characteristics (AC generator); measuring of short circuit characteristics (AC generator); measuring of excitation current at rated voltage, current and power factor (AC synchronous motor or generator); measuring of steady short circuit condition (AC synchronous generator); a steep fronted impulse test (for high voltage machines).

— The type test (TT) and routine tests (RT) that are required for motors include:

- Air gap measured or verified; visual inspection, verification of data on name plate; verification of degree of enclosure protection; vibration or balance of the machine including operation of the bearing or lubrication system during running tests; overspeed tests (20% in excess of rated r.p.m. for 2 minutes); withstand voltage test (1 minute); windings resistance to be measured; temperature-rise test at full load; measurement of insulation resistance; no load current at rated voltage and frequency; overload or overcurrent test.

— Confirm that all machines are tested onboard, after installation, so that acceptable starting and running performance is verified with full capacity of driven equipment.

DNV-OS-D201Ch.2 Sec.10 [4.4]

— All machines shall be tested at site, after installation, so that acceptable starting and running performance are verified with full capacity of driven equipment, alternatively full generator load.

— Confirm electrical characteristics and control of all generating sets together with their switchboard equipment (switchgear or protection and cabling) during full load test.

— Confirm engine room ventilation / airflow during full load test of all generating sets.— Confirm voltage regulation, speed governing and load sharing for of all generating sets.— Confirm overload protection, reverse power protection, overcurrent and short circuit, other protection like earth fault, differential,

undervoltage, overvoltage (if applicable) for all generating sets.— Confirm synchronizing systems for all generating sets.




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Rotating Machinery - Load Steps


— Confirm transient frequency variations in the electrical network to be less than 10% of the rated frequency with a recovery time to steady state conditions not exceeding five (5) seconds, when the maximum electrical step load is switched on or off.

— Confirm application of electrical load to be possible with three load steps and shall be such that prime movers - running at no load - can suddenly be loaded to 1/3 of the rated power of the generator followed by the next 1/3 after an interval sufficient to restore the speed to a steady state condition.

— Finally, the sudden load step from 2/3 to full load applies. Additionally, the prime mover shall be able to take a sudden application of not less than 1/3 of full load when running at any part load below 2/3 of full power. Steady state conditions shall be achieved in not more than five (5) seconds.

— Confirm parallel running of generating sets (active load, kW) in the range of 20% to 100% of total load. The load on any generating set shall not normally differ from its proportionate share of the total load by more than 15% of the rated power of the largest machine or 25% of the rated power of the individual machine in question, whichever is the less.


— Confirm parallel running of generating sets (reactive load, kVAr) in the range 20 to 100% of the rated reactive load of each generator. The actual reactive load (mean value, if oscillations occur) shall not differ from its proportionate share of the total reactive load by more than 10% of the rated reactive load of the largest generator in parallel, or not more than 25% of the smallest generator's rated reactive load, if this is less than the former.

Power Transformers DNV-OS-D201Ch.2 Sec.6 [2.1]

— Confirm that transformers are tested at the manufacturer’s works with routine tests (RT) being carried out on each transformer, and type tests (TT) carried out on a prototype or the first batch of identical transformers.

— The following routine tests (RT) are to be carried out:

- Inspection of enclosure, terminations, instrumentation or protection; measuring of insulation resistance; measuring of voltage ratio at no load and check of phase displacement; measuring of winding resistance; short circuit impedance and load losses; measuring of no-load loss and current; separate-source AC withstand voltage test; inducted AC withstand voltage test; partial discharge measurement on transformer windings above Um ≥ 3.6 kV, maximum level of partial discharge shall be 10 pC.

— The following type test (TT) is to be carried out:

- Temperature rise test,— Confirm that the separate-source AC withstand voltage test involves:

- A high voltage test is applied to a new and completed transformer- The test is carried out immediately after the temperature rise test- The test is applied between each winding and the other windings, frame and enclosure all connected together. The full test voltage

shall be maintained for one (1) minute- Single phase transformers for use in a polyphase group shall be tested in accordance with requirements for the transformers as

connected together in the system- After rewinding or other extensive repair, the transformer shall be subjected to a high voltage test with a test voltage of at least 75%

of that minimum test voltage.— Confirm that insulation resistance test is carried out and involves measuring the insulation resistance of a new, clean, dry transformer,

after the temperature rise test and high voltage test have been carried out. The test shall be carried out between:

- All current carrying parts, connected together, and earth- All current carrying parts of different polarity or phase, where both ends of each polarity or phase are individually accessible.




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Semi-Conductor Converters

DNV-OS-D201Ch.2 Sec.7 [1.2.1]

— Confirm that the converter has a capacity of at least 100% continuous load, and specified overload capacity given by a current of maximum duration of time.

— Confirm for motor drives (including soft starters), shall as a minimum withstand two consecutive start attempts immediately followed after stopping, or starting up from cold without being overheated.


— Confirm that capacitors within a converter shall be discharged to less than 60 Volt in less than five (5) seconds (or a residual charge of less than 50 mC) after removal of power. If this requirement is not achievable, warning signboards shall be fitted.

— Confirm that alarm is given for power supply failure and trip of unit.— Confirm that for power supply units with batteries included, the following alarms shall be provided: when the discharging battery fails,

alternatively if the battery is being discharged; when the automatic bypass is in operation for on-line units; operation of battery protective device.

— Confirm that converters have the possibility for monitoring the output voltage, frequency and current.— Confirm that restarting the converter in a normal manner after a blackout is possible. Manual resetting / restarting of the unit shall not

be necessary.


— Confirm that converters are routine tested (RT) at the manufacturer’s works and are carried out on each converter. These tests should include:

- Visual inspection; function test (UPS switch test); insulation tests (high voltage tests); insulation resistance test; control and monitoring system; cooling failure tests; pressure test of coolant piping/hoses.

— Confirm that converters are type tested (TT) at the manufacturer’s works and are carried out on a prototype of a converter or the first batch of identical converters. These tests should include:

- Visual inspection; function test (UPS switch test); input voltage and frequency tolerance test; stored energy and restored energy tests; insulation tests (high voltage tests); insulation resistance test; rated current test/full load test; temperature rise test; control and monitoring system; short circuit test; cooling failure tests; capacitor discharge; pressure test of coolant piping/hoses.

DNV-OS-D201Ch.2 Sec.10 [4.4]

— Confirm that functional tests of semi-conductor converters for motor drivers are performed with all relevant ship systems simultaneously in operation, and in all characteristic load conditions.

Control Power DNV-OS-D201Ch.2 Sec.2 [8.1]

— Confirm that upon failure of the power supply to essential and important functions, an alarm is initiated. In case of duplicated supplies, both shall be monitored.

— Confirm battery or uninterruptible power supply is provided as stand-by power supply for systems that are required to operate during black-out, restore normal conditions or if specific requirements specify the need.

Electrical Distribution Systems


— Confirm that each insulated, or high resistance earthed primary or secondary distribution system has a device or devices to continuously monitor the values of electrical insulation to earth and to give an audible or visual indication in case of abnormally low insulation values.

— Confirm that on high voltage systems, automatic disconnection is arranged for operation at 1/3 or less of the minimum earth fault current. On low-resistance earthed neutral systems, the disconnection is arranged for less than 20% of the minimum earth fault current.


— Confirm loss of protective functions to either trip the corresponding equipment or give an alarm on a manned control position.— Confirm interlocks when a switchboard has two incoming feeders in order to prevent simultaneously closing of both feeders when the

parallel-connected short circuit power exceeds the switchboards’ short circuit strength. A short time parallel feeding as a “make before break” arrangement is accepted when arranged with automatic disconnection of one of the parallel feeders within 30 seconds.


— Confirm that generators are fitted with overcurrent protection such that the generator breaker trips at 110% to 125% of nominal current, with a time delay of 20 to 120 seconds. Confirm that short circuit protection is installed such that the breaker trips at a maximum of 1 second delay.

— Confirm that generator circuit breakers are also equipped with undervoltage protection, such that it will trip when generator voltage drops within the range of 70% to 35% of its rated voltage.




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Electrical Distribution Systems(Continued)


— Confirm equipment is designed to operate at any load up to the rated load, with a supply voltage containing the following harmonic distortion:

- Total harmonic content not exceeding 8% of voltage RMS value; no single harmonic being greater than 5% of voltage RMS value.

DNV-OS-D201Ch.2 Sec.10 [4.3]

— Confirm that all outgoing power circuits from switchboards (cables and consumers) connected during installation shall undergo insulation resistance testing to verify its insulation level towards earth and between phases where applicable (i.e. switchboards assembled onboard).

— The insulation resistance tests (megger tests) shall be carried out by means of a suitable instrument applying a DC voltage according to:

- Rated voltage ≤ 250 V, minimum test voltage 2 x rated voltage (V), minimum resistance 1 M-ohm- 250 < rated voltage ≤ 1000 V, minimum test voltage 500 V, minimum resistance 1 M-ohm- 1000 < rated voltage ≤ 7200 V, minimum test voltage 1000 V, minimum resistance (rated voltage / 1000) + 1 M-ohm- 7200 < rated voltage ≤ 15000 V, minimum test voltage 5000 V, minimum resistance (rated voltage / 1000) + 1 M-ohm.

DNV-OS-D201Ch.2 Sec.10 [4.4]

— Confirm that function and load tests of essential and important equipment are carried out.— Confirm settings of protective functions of consumers.— Confirm function of protective functions of consumers, if wired up during installation.— Confirm satisfactory operation (by use of tests) of the distribution in normal conditions, and in any abnormal condition in which the

system is intended to operate.— Confirm start-up and stop sequences are tested together with different operating modes and are controlled by automatic control

systems when relevant. — Confirm interlocks, alarms and indicators.— Confirm all control modes from all control locations.

Emergency Stops DNV-OS-D201Ch.2 Sec.2 [8.5]

— Confirm that at least the following pumps and fans are arranged and able to be stopped in an emergency from an easily accessible position outside the space being served:

- Fuel oil transfer pumps- Fuel oil feed and booster pumps- Nozzles cooling pumps when fuel oil is used as coolant- Fuel and lubrication oil purifiers- Pumps for oil-burning installations- Fans for forced draught to boilers- All ventilation fans- All electrical driven lubrication oil pumps- Thermal oil circulating pumps- Hydraulic oil pumps in machinery space.

Battery / UPS System DNV-OS-D201Ch.2 Sec.7 [1.2]

— Confirm monitoring with alarm for UPS is provided for power supply failure, trip of unit and earth fault (except dedicated system for single consumers).

— Confirm for power supply units with batteries included, that additional alarms are provided for when the battery is being discharged, when the bypass is in operation for on-line units and operation of battery protective device is active. Confirm that alarms are given to main alarm system.

DNV-OS-D201Ch.2 Sec.10 [2.3]

— Confirm that the following tests and inspections are performed before batteries are put into service:

- Ventilation shall be verified, including natural ventilation;- Capacity tests, voltage measurements;- Alarms and monitoring functions.




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Battery / UPS System(Continued)

DNV-OS-D201Ch.2 Sec.10 [4.4]

— Confirm positive function test result for dip free voltage when feeding power is being switched off (black out simulation) for UPS systems and regular D.C. battery backed up power supply (transitional, emergency or clean power) systems serving essential or important functions.

— Confirm correct capacity of battery backed up power supply system by running on expected load (in battery feeding mode) for a period determined by the requirements for the actual system and by the relevant rules (30 minutes unless specified by other Rule requirement).

— Confirm that alarms are verified for their correct function.— Confirm functional test result of semi-conductor converters for power supply with intended loading onboard.— Confirm functional tests of semi-conductor converters for motor drives with all relevant ship systems simultaneously in operation, and

in all characteristic load conditions.

Lighting DNV-OS-D201Ch.2 Sec.2 [6.2]

— Confirm main electric lighting system to provide illumination throughout those parts of the ship normally accessible to, and used by, passengers or crew, and shall be supplied from the main source of electrical power. These areas include:

- Every muster and embarkation station, survival craft and their launching appliances, and area of water which they are launched;- All service and accommodation alleyways, stairways and exits, personnel lift cars and lift trunks- All machinery spaces and main generating stations including their control positions- All control stations, machinery control rooms, locations where operation of safety equipment may be necessary to bring the

installation to a safe stage, steering gear and at each main and emergency switchboard- All spaces from which control of drilling process is performed and where controls of machinery essential for the performance of

this process, or devices for the emergency switching-off of the power plant are located- All stowage positions for firemen’s outfits- At the fire pump and its starting position- At the sprinkler pump and its starting position- At the emergency bilge pump and its starting position- Floodlight and perimeter lights on helicopter landing decks- In all cargo pump rooms.

— Confirm that upon loss of main source of power, all required emergency lighting to is automatically supplied from the emergency source of power.

— Confirm the navigation light switchboard (controller) to be supplied by two alternative circuits, one from the main source of power and one from the emergency source of power. A changeover switch shall be arranged for the two supply circuits. Confirm that upon failure of either power supply, an alarm is given.

Parallel Connected Cables

DNV-OS-D201Ch.2 Sec.2 [10.6]

— Confirm that single cables, after installation, do not carry more than its capacity. — Confirm that this is demonstrated at full load of the consumer.

High Voltage Cable after Installation

DNV-OS-D201Ch.2 Sec.10 [4.3]

— After installation, with termination kit applied, high voltage cables shall be subject to one of the following alternative high voltage tests, with the voltage applied between the conductors and the screen:

a) When a D.C. voltage withstand test is carried out, the voltage shall be not less than:

- 1.6 · (2.5 · U0 + 2) kV for cables with U0 not exceeding 3.6 kV- 4.2 · U0 kV for cables with U0 in excess of 3.6 kV

The test voltage shall be maintained for a minimum of 15 minutes;

b) A power frequency test at the normal operating voltage of the system, applied for 24 hours.

c) A power frequency test with the phase-to-phase voltage of the system applied between the conductor and the metallic screen or earth for five (5) minutes.




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Cooling and Anti-Condensation


— Where electrical equipment depends on additional cooling, the following shall be confirmed:

- Alarm is initiated when auxiliary cooling or ventilation motors stop running- Alarm is initiated based on winding temperature for windings in cooled equipment for essential services- Alarm is initiated based on high winding temperature in the windings in the cooled equipment for important services.- Confirm automatic operation (on standstill condition) of heating elements for all equipment equipped with air / water heat

exchangers as well as for all high voltage converters, transformers and rotating equipment (which are not located in heated and ventilated spaces).

Electric Propulsion DNV-OS-D201Ch.2 Sec.12 [1.3 and 1.4]

— Confirm the system to have sufficient overload capacity to provide the necessary torque, power, and for A.C. systems reactive power needed during starting (seatrial), manoeuvring (sea trial) and crash stop (seatrial) conditions.

- During crash-stop manoeuvres, it will be accepted that voltage and frequency variations exceed normal limits, if other equipment operating on the same net is not unduly affected.

DNV-OS-D201Ch.2 Sec.12 [1.5]

— Confirm upon detection of abnormal conditions in the generators’ excitation systems, an alarm is given on the navigating bridge and in the engine control room and automatic actions to bring the system into a safe operational mode are executed.

DNV-OS-D201Ch.2 Sec.12 [1.6]

— Confirm that a failure of the remote propulsion control system does not cause appreciable change of the thrust level or direction and not prohibit local control.

— Confirm thrust limitation of the normal propulsion remote control system when there is not adequate available power.— Confirm electric power generation and distribution system to be equipped with an automatic control system having at least the

following functions:

- Ensure adequate power for safe manoeuvring is available at all times- Ensure even load sharing between on-line generators- Execute load tripping and / or load reduction when the power plant is overloaded- Ensure that adequate power for safe manoeuvring is available also if one running generator is tripped. If necessary by tripping of

non-essential consumers- No changes in available power shall occur if the automatic control system fails, that is no start or stop of generators shall occur as

an effect of a failure- Control the maximum propulsion motor output.

— Confirm that the control system initiates an alarm to the operator when adequate power is no longer available.— Confirm that critical alarms are relayed to navigation bridge and displayed with separate warnings separated from group alarms.

— Confirm that monitoring alarms are arranged for:

- High temperature of cooling medium of machines and semi-conductor converters having forced cooling- High winding temperature of all propulsion generators and motors- Loss of flow of primary and secondary coolants of machines and semi-conductor converters having closed cooling method with a

heat exchanger, when this flow is not caused by the propulsion motor itself. Auxiliary contacts from motor starters may be used for this purpose

- Lubricating oil pressure for machines with forced oil lubrication- Leakage of water-air heat exchanger for cooling of machines and semi-conductor converters- Earth fault for main propulsion circuits- Earth fault for excitation circuits (This may be omitted in circuits of brushless excitation systems and for machines rated less than

500 kW)




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Electric Propulsion(Continued)

DNV-OS-D201Ch.2 Sec.12[1.6](Continued)

— Fuses for filter units or for other components where fuse failures are not evident.— Confirm that a temperature indicator for directly reading the temperature of the stator windings of generators and propulsion motors

is located in the control room.— Confirm that the following values are displayed in the control room or on the applicable converter:

- Stator current in each motor- Field current in each motor (if applicable).

— Confirm the following values are displayed in the control room for each generator: A power factor meter or kVAr meter.— Confirm that instruments are provided for indication of consumed power and power available for propulsion on the bridge and in the

control room.— Confirm at each propulsion control stand, indications, based on feedback signals, are provided for pitch or direction of rotation, speed,

and azimuth, if applicable.— Confirm indications as listed for control stands, are arranged in the engine control room, even if no control means are provided.

DNV-OS-D201Ch.2 Sec.12 [2.1]

— Upon completion as well as satisfactory tests of all subsystems, the electric propulsion system shall be confirmed during sea trial where the propulsion plant shall be tested in normal and abnormal conditions.

— Confirm that start-up and stop sequences as controlled by the power management system, when relevant.— Confirm safety functions, alarms and indicators.— Confirm all control modes from all control locations.— Confirm required level of redundancy by verification through tests.




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F.5 Instrumentation and telecommunication systems




Failure Response DNV-OS-D202 Ch.2 Sec.1 [3.2]

— Confirm that detected failures initiate alarms in the assigned manned control station.— Confirm that failure detection facilities at least cover the following failure types:

- Power failure- Sensor and actuator failures.

— For computer based systems, confirm that failure detection facilities covers the following:

- Communication errors- Computer hardware failures- Software execution failures- Software logical failures.

— Confirm fail-safe functionality to ensure the most probable failures result in the least critical of any possible new conditions. Special attention shall be paid to arrangement where single fire or gas detectors are used for each detection area, as fail safe action should be taken on instrument failure resulting in confirmed fire or gas.

Integration Testing DNV-OS-D202Ch.2 Sec.1 [5.3]

— Confirm that integration tests include integration of hardware components and integration of software modules into the same hardware. The integration tests to be performed with the actual software and hardware on board include:

- Hardware tests for failures- System software tests for failures- Application software tests- Function tests of normal system operation, as well as operation outside normal operating parameters- User interface tests.

On-board Testing DNV-OS-D202 Ch.2 Sec.1 [5.5]

— On-board testing shall demonstrate, verify and document full functionality of all automation and safety systems and shall include:

- During installation, the correct function of individual equipment packages, together with establishment of correct parameters for automation and safety (time constants, set points, etc.)

- During installation and sea trials, the correct function of systems and integration of systems, including the ability of the automation and safety systems to keep any EUC within the specified tolerances and carry out all safety/protective actions

- The correct distribution, protection and capacity of power supplies- Back-up and emergency automation and safety functions for essential unit / installation systems. The tests should demonstrate that

the essential installation functions are operable on the available back-up means of operation (as required in the relevant application standard), and in a situation where the normal system is disabled as far as practical.

— A copy of the approved test programme shall be kept on the installation, completed with final set points. — The test program for harbour and sea trials shall be approved prior to tests by the Approval centre.— Hydraulic automation and shutdown systems with on or off regulation shall be tested with maximum return flow to verify that return

headers are adequately sized and free of blockages that could prevent correct system performance. — For pneumatic and hydraulic automation systems with accumulators used to ensure fail-safe operation, tests shall include verification

of accumulator charge level and capacity.

DNV-OS-D202 Ch.2 Sec.2 [1.3]

— Confirm main propulsion remote controls are independent of other command locations. Only one location shall be able to be in control at a time. Confirm on each alternative location that it is indicated when this location is in control.

— Confirm transfer of propulsion remote control from one location to another (also applicable for mode change) does not result in significant alteration of process equipment parameters.

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On-board Testing (Continued)


— Confirm equipment under control (EUC) does not start again automatically after being stopped by safety system.

DNV-OS-D202 Ch.2 Sec.2 [1.5]

— Confirm that alarms indicate abnormal conditions only. In areas where the audible signal may not be heard due to background noise, additional visual and audible display units shall be installed.

— Confirm audible alarms are distinguishable from signals indicating normal conditions.— Confirm visual alarms are distinguishable from other indications by use of colour and special representation.— Confirm responsibility for alarms not to be transferred before acknowledged by the receiving location. Confirm transfer of

responsibility gives audible warning and indicates at each individual location when this location is in charge.— Confirm that silencing the audible signal causes the signal to cease in addition to the external rotating lights. However, the visual alarm

indication on the workstation remains unchanged, normally flashing.— Confirm that acknowledgement of the alarm causes silencing of the alarm. However, visual indication will remain in alarm state on

the workstation until the alarm condition ceases. Also, an active alarm signal will not prevent initiation of any new alarm with its audible and visual indication.

DNV-OS-D202 Ch.2 Sec.3 [2.1]

— Confirm running software versions are uniquely identified by number, date or other appropriate means.— Confirm software modifications are not made without also changing the version identifier. — Confirm the record of changes to the system since the original issue and the identification information is maintained.

DNV-OS-D202 Ch.2 Sec.3 [3.1]

— Confirm it is possible to maintain emergency operation of the vessel / units main functions independent of network status.


— Confirm that the data communication link is self-checking, detects failures and initiates an alarm on dedication workstations.

DNV-OS-D202 Ch.2 Sec.3 [3.2]

— Confirm that network (traffic) performance is continuously monitored. Alarms should be generated if malfunctions or reduced / degraded capacity occurs.

DNV-OS-D202 Ch.2 Sec.3 [3.4]

— Confirm the following items in a test related to network functionality:

- The main observations / items from the analysis- Self- diagnostics, alarming upon different network failures- Worst-case scenarios - network storm- Segment segregation - autonomous operation of segments- Individual controller node integrity - nodes working without network communication- Consequence of single cabinet loss.

DNV-OS-D202 Ch.2 Sec.4 [3.7]

— After installation, confirm that Optical Time Domain Reflectometry (OTDR) measurements for each fibre can be used to correct and re-evaluate the power budget calculations.

DNV-OS-D202 Ch.2 Sec.4 [4.1]

— Confirm piping and tubing to actuators and between actuators and local accumulators are hydrostatically tested to 1.5 times the system design pressure for minimum 15 minutes.

On-board Testing (Continued)

DNV-OS-D202 Ch.2 Sec.6 [4.1]

— Drilling Unit / Production and Storage Unit

- Confirm back-up means of operation contains the most important action functions and alarm indications related to emergency relocation (if required), gas detection, including activation of active fire protection devices;

- This will typically include release of foam systems and indication of foam system status, if applicable; gas detection status indication (flammable and toxic); facilities for emergency relocation, if applicable; activation of BOP release sequence (normally located in BOP control panel).

DNV-OS-D202 Ch.2 Sec.7 [2.1]

— Production and Storage Unit

- Confirm power to the relevant parts of the safety system is not be tripped by the emergency shutdown (ESD) system.




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F.6 Fire protection systems




Fire Divisions DNV-OS-D301Ch.2 Sec.1 [3.1]

— “H” class divisions are tested to the following standards:

- They are constructed to be capable of preventing the passage of gas, smoke and flames up to the end of the two-hour standard fire test.

- Confirm that a test of a prototype division is carried out before its classified as “H” class.

— “A” class divisions are tested to the following standards:

- They prevent the passage of smoke and flame to the end of the one-hour standard fire test.- Confirm that a test of a prototype division is carried out before its classified as “H” class.

— “B” class divisions are tested to the following standards:

- They prevent the passage of flame to the end of the first half hour of the standard fire test.- Confirm that a test of a prototype division is carried out before its classified as “H” class.

Fire Protection DNV-OS-D301Ch.2 Sec.1 [2.3]

— Confirm power ventilation of accommodation spaces, service spaces, control stations, machinery spaces and hazardous areas is possible of being stopped from an easily accessible position outside the space being served. The means provided for stopping the power ventilation serving machinery spaces or hazardous areas to be entirely separate from the means provided for stopping ventilation of other spaces.

Fire Fighting Systems


— Confirm that active fire protection systems and equipment can be tested without interruption of normal operation.


— Confirm that each pump has the capability of delivering at least one jet simultaneously from each of any two (2) fire hydrants, hoses and 19 mm nozzles while maintaining a minimum pressure of 0.35 N/mm2.

— Where a foam system is provided for protection of the helicopter deck, confirm the pump is capable of maintaining a pressure of 0.7 N/mm2 at the foam installation.


— Confirm release of the deluge systems to be possible both locally and remotely at the control station where the operating status of the systems is monitored.


— Confirm that pressure drop in the sprinkler system is alarmed and automatically activates start-up of fire water pumps.


— Confirm that the fire water monitor has sufficient movement horizontally and vertically in order to permit the monitor to cover the complete area of protection.

— Confirm the local manual override control is possible, if remotely operated monitor is installed.— Confirm the monitor is provided with a locking device for operating in a selected position as well as capable of both jet and spray

discharge.

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Fire and Gas Detection

DNV-OS-D301Ch.2 Sec.4 [3.5/3.7]

— Confirm that activation of any detector or manually operated call point will initiate a visual and audible fire signal at the control panel and indicating units. If the signals have not received attention within two (2) minutes, confirm that an audible alarm is automatically sounded throughout the crew accommodation and service spaces, control stations and machinery spaces of category A.

— Confirm that the function of the detection system is periodically tested to the satisfaction of the Administration by means of equipment producing hot air at the appropriate temperature, or smoke or aerosol particles having the appropriate range of density or particle size, or other phenomena associated with incipient fires to which the detector is designed to respond.

— Confirm that all detectors are of the type such that they can be tested for correct operation and restored to normal surveillance without the renewal of any component.


— Periodically Unattended Machinery Space:

- Confirm that an approved fire detection system based on self-monitoring principals includes facilities for periodical testing is installed in periodically unattended machinery spaces.

- Confirm fire detection system under varying conditions of engine operation and ventilation (activity normally performed during sea trial – smoke tests).


— Confirm that a fixed automatic gas detection and alarm system continuously monitors all enclosed areas of the unit in which the accumulation of flammable gas may be expected to occur.

— Confirm that gas detection system indicates both, by audible and visual alarm in the control center, the presence of an accumulation of gas corresponding to 25% and 60% of lower explosion limit.

Fire Protection – Oil and Gas Production and Storage Units


— Confirm that the fire pump systems are available at all times at the central control station. The firewater pumps should start automatically upon fire detection in any area they are serving, as well as upon low pressure in the fire water ring main.

— Confirm that fire pumps are only be capable of being manually stopped at the driver. Automatic trip is only accepted for over-speed protection.

— Confirm that fire pump systems can operate until destruction in an emergency situation. Over-speed protection shall be automatic reset to cater for situations where new start up is called for.

— Confirm that fire detection at the fire water pump and / or its driver area do not stop the pump or inhibit the start of the fire pump driver.


— Confirm that fixed fire fighting systems, including deluge valve and fire water distribution pipework, provide effective fire water protection within 20 seconds of the demand.

— Confirm the deluge valve system is activated by a signal from the fire and gas detection system and has a local energy source for the valve actuator.


— Confirm that the rate of supply of foam solution shall not be less than the greatest of the following:

- 0.6 litre / minute / m2 of storage tank deck area, where crude oil tank deck area means the maximum breadth of the ship multiplied by the total longitudinal extent of the cargo tank spaces

- 6 litre / minute / m2 of the horizontal sectional area of the single tank having the largest such area, or- 3 litre/ minute / m2 of the area protected by the largest monitor, such area being entirely forward of the monitor, but not less than

1250 litre / minute.

— Confirm that sufficient foam concentrate can be supplied to ensure at least 20 minutes of foam generation in tankers fitted with an inert gas installation, and 30 minutes of foam generation in tankers not fitted with an inert gas installation when using solution rates given above, whichever is greatest.

Fire Protection – LNG Import and Export Terminals and Production Units


— Confirm that the fire pump systems are available at all times at the central control station. Confirm that firewater pumps start automatically upon fire detection in any area they are serving, as well as upon low pressure in the fire water ring main.




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Fire Protection –LNG Import and Export Terminals and Production Units (Continued)


— Confirm that fixed fire fighting systems, including deluge valve and fire water distribution pipework, provide effective fire water protection within 20 seconds of the demand.

— Confirm the deluge valve system is activated by a signal from the fire and gas detection system and has a local energy source for the valve actuator.


— Confirm that fire detection in areas containing gas and LNG processing facilities results in an automatic shut-down of hydrocarbon flow and ventilation for the area.

— Confirm automatic shutdown of ventilation upon detection of fire in enclosed spaces or smoke detection in ventilation air inlets.— Confirm that fire detection in the wellhead, turret, oil production or crude oil tank areas initiates an automatic shutdown of wellhead

valves and oil production facilities.


— Confirm that gas detection results in an automatic shutdown all hydrocarbon flow.— Confirm that a gas concentration of 25% lower explosion limit (LEL) in the air results in an automatic shutdown of all air inlets to

non-hazardous areas.— Confirm 60% LEL gas detection in the area of wellhead, turret, production facilities and storage tanks result in the wellhead valves

and production facilities shutdown.

Rules for ShipsPt.5 Ch.3 Sec.9F and G

— Confirm that gas detection not higher than 10% LEL in product pump rooms and double hull spaces on floating installations results in an audible and visual alarm signal which is automatically initiated in the pump-room, engine control room and navigation bridge, to alert personnel to the potential hazard.

— For ships with inert gas systems, confirm that two instruments for measuring O2-content, two instruments for measuring hydrocarbon content in the range of 0 to 20% hydrocarbon gas by volume and two instruments for measuring low hydrocarbon gas content 0 to 100% LEL are present. Confirm that alarms (visual and audible) on the bridge and in the cargo control room are triggered if safe levels are exceeded.

— For ships without inert gas system, confirm that two instruments for measuring low hydrocarbon gas content 0 to 100% LEL are provided and that alarms (visual and audible) on the bridge and in the cargo control room are triggered if safe levels are exceeded.




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F.7 Vessel operations




Periodical Test Rules for ShipsPt.6 Ch.3 Sec.1D200

— Confirm that testing of field instruments shall in general include the physical sensor and the whole signal loop, correct functionality, indication and alarming.

— Confirm that all field instruments for critical alarms are tested every six (6) months, unless more frequent testing is specified by the manufacturer. The test intervals for all other field instruments shall not exceed 12 months.

General Operations Rules for ShipsPt.6 Ch.3 Sec.2C100

— Confirm that the alarm system including the extension alarm system is continuously powered and in case of a loss of normal power supply, an automatic change over to a continuously available power supply will have capacity for 30 minutes.

Rules for ShipsPt.6 Ch.3 Sec.2C400

— Confirm that the watch responsibility transfer system initiates an audible and optical (flashing light) warning at both control positions when watch transfer is requested, and the warning shall remain in operation until acknowledged.


— Confirm that automatic start of the standby pump is initiated by the process parameter which is being monitored (ie. Low-pressure signal). When a pump is standby, confirm that this is clearly indicated on the operator panel.

Class Notation E0 – Monitoring Systems


— Confirm that a manual activated safety shutdown is not possible from the bridge for over-speed protection, crankcase explosive conditions and short circuit in electrical propulsion plants.

— Confirm that the alarm for manual activation of shutdown is independent from the main alarm system.

Rules for ShipsPt.6 Ch.3 Sec.3B100

— E0: Confirm and test individual alarms on the bridge for:

- Automatic shutdown of main boiler- Automatic shutdown and / or slowdown of propulsion machinery- Request for manual shutdown and / or slowdown of propulsion machinery- Power failure bridge alarm system- Failure in the remote control systems with respect to propulsion machinery, including controllable pitch propeller if arranged- Failure in the remote control systems with respect to steering- Low starting air pressure for reversible propulsion engines.

— Confirm that the propulsion plant is possible to reset (propulsion machinery safety system), as well as restart (from bridge) after blackout. Automatic or manual arrangements are both acceptable.


— Confirm the number of consecutive automatic attempts, which fail to produce a start, is limited to safeguard sufficient starting air pressure. Confirm that an alarm is provided indicating low starting air pressure set at a level that still permits starting operations of the propulsion machinery.


— During sea trials, four (4) hours continuous operation with unattended machinery spaces shall be confirmed.


— During sea trials, testing of the remote control system for the propulsion machinery shall be confirmed. Prior to testing, the propulsion machinery shall run for at least one (1) hour.

— All tests included in the test programme for the remote control system shall be carried out without manual assistance from the engine room and all systems shall be in operation as normal for unattended machinery space.

Rules for ShipsPt.6 Ch.3 Sec.5B200 / B300

— Confirm manoeuvres, start, stop and emergency stop according to approved test programme for fixed or controllable pitch propeller arrangement during sea trial.

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Class Notation E0 – Monitoring Systems (Continued)


— Confirm manoeuvres, start, stop and emergency stop according to approved test programme for steam turbine arrangement during sea trial.

Ships with Gas Fuelled Machinery


— During sea trials, four (4) hours continuous operation with unattended machinery spaces shall be confirmed for both gas operation mode as well as fuel oil mode (resulting in 2 x 4 hours test).

— Manoeuvres, start, stop and emergency stop according to approved test programme should be confirmed for both gas operation mode as well as fuel oil mode.

— For LNG carriers with steam propulsion and dual fuel boilers as well as dual fuel engines of the high pressure gas injection type: testing required (four (4) hours continuous operation - manoeuvres, start, stop and emergency stop test) may be carried out with boilers fired with fuel oil only.

Other Installations for Boil-off Gas Handling


— Confirm that automatic operation of gas combustion units (oxidizing units) is possible without manual surveillance, except that start and stop may be manually initiated.

— Confirm that automatic operation for re-liquefaction plants for boil-off gas is possible without manual surveillance.


— Confirm that parameters are recorded for the automatic control system for auxiliary boilers tests, which include:

- Steam pressure (primary and secondary system)- Water level in boiler- Automatic actions such as start and/or stop of burners, alarms, etc.

— For an automatic control system for auxiliary boilers serving turbo generators, vary the boiler load as follows:

- Increase load from minimum to full load during a period of minimum 15 minutes- Reduce load from full load to minimum during a period of minimum 15 minutes- Increase load suddenly to minimum 50% of full load by connecting one of the greater consumers- When stationary conditions are reached, reduce load suddenly to a minimum.

— For an automatic control system for two auxiliary boilers operating in parallel, vary the boilers’ load as follows:

- Increase load suddenly to minimum 30% of full load, by connecting one of the greater consumers.— When stationary conditions are reached, reduce load suddenly to approximately 5% of full load and keep that load until stationary

conditions are reached.


— Confirm that parameters are recorded for the automatic control system for main boilers tests, which include:

- Steam flow (alternatively position of control valve);- Steam pressure;- Temperature of superheated steam;- Water level in boiler;- Water level in condenser and deaerator;- Fuel oil temperature or viscosity;- Excess of combustion air in exhaust gas.

— Confirm that the boiler load is varied in accordance with manoeuvring tests specified in B300. The boiler plant testing may be carried out simultaneously with testing of remote control system for the main turbines.

Other Installations for Boil-off Gas Handling(Continued)


— Confirm the flame fault detection system by closing fuel supply to burner while in operation.— With burners in operation, confirm the automatic shutoff valve for fuel oil by shielding the flame detector.— With boiler in operation, confirm automatic stop of the combustion air fan. — Confirm that fuel oil supply is shut off after reducing water level below safety limit.— Confirm remaining boiler alarms and safety actions by simulating failures as realistically as practicable.




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Dynamic Positioning Rules for ShipsPt.6 Ch.7 Sec.1E100

— Confirm power systems and thruster systems have been completed as per main class test requirement and no major pending issues remaining before commencing any dynamic positioning (DP) test activity.

- Main class test requirements will at least include:- Load test according to main class- Transfer of thruster control- Manual override of thruster control- Emergency stop- Communication systems- Main alarm system as for main class and E0 (if applicable)- Integrated automation systems (if applicable).

Rules for ShipsPt.6 Ch.7 Sec.1E600

— Confirm dynamic positioning (DP) functional test as per approved test programme.— Confirm DP duration test for at least eight (8) hours with the complete automatic system in operation.— Confirm DP failure modes and effects analysis (FMEA) as per approved test programme.




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APPENDIX G SURVEY SCOPE FOR SPECIFIC CLASS NOTATIONS

G.1 DNV survey scope for DRILL




Drilling Plant – General

DNV-OSS-101DNV-OS-E101

— This section includes instructions for surveys and tests in connection with installation of DRILL equipment and systems. It is mainly to be used by the PMF and his / hers project task members at the yard.

— DRILL notation covers design fabrication, installation and operational aspects of offshore drilling facilities which have potential to effect personnel or pollution of the environment.

— DRILL notation requires certification of drilling equipment and systems, and approval of complete drilling plant, which includes at least the following:

- Drilling arrangement- Piping and instrumentation- Power supply- Equipment interface.

— It is important to ensure that equipment installed onboard is certified in accordance with the Rules. This should be confirmed prior to testing of complete systems.

— Testing of systems and equipment specified in the Rules is to be carried out in accordance with written test procedures accepted by the Surveyor.

— Such test programs may contain testing that exceeds the Rule requirement; however, the Surveyor should “Note” the program and ensure that the rule requirements are complied with, as a minimum.

— Although most equipment will normally have undergone shop testing at the manufacturer, it is important to ensure that equipment has not been damaged under transportation and has been assembled, installed and integrated in the correct manner. Also, time between equipment fabrication and installation onboard can be considerable.

— Functional testing of systems is to be carried out, as far as possible, under working conditions.— SIT test to be carried out.— In connection with installation of heavy equipment, special attention should be paid to fixation and support.— Units with DRILL / DRILL(N) class should have equipment lists for all category I equipment. The list should include DVR and PC numbers

with name of maker and equipment.— A copy of all the PC’s shall be filed at the local station.— DNV-OS-E101 makes reference to other standards. In particular, A101 and Escape way, F and G/ESD needs to be addressed as it’s always

a problem on site.— Communication / PA is not addressed.

Drilling Structures – Derrick

DNV-OS-E101Ch.2 Sec.5 [2.1]

— Confirm satisfactory fastening of derrick fixtures, special attention to fixation and support of heavy equipment.

Drill floor and sub-structures

DNV-OS-E101Ch.2 Sec.5[2.3/2.4]

— Check satisfactory sea-fastening arrangement.— Lifting lugs / pad eyes, if covered by Class.

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Well Control Systems –

Blowout Preventer Stack

DNV-OS-E101 Ch.2 Sec.5 [3.2]

DNV-OS-E101 Ch.2 Sec.6 [3.2]

— Leak / pressure test to demonstrate function of rams, annular elements, valve gates and C/K connections. Testing should be carried out at low pressure (2-300 psi) and rated working pressure.

(Note: For testing of the pipe rams and annulars, a suitable test tool should be used, suitably anchored to the test stump).

— Complete function testing of the BOP including all preventers, connectors and fail-safe valves (using the accumulator system, not only the stack-mounted accumulators).

Well Control Systems –Blowout Control System

DNV-OS-E101 Ch.2 Sec.5 [3.2]

DNV-OS-E101 Ch.2 Sec.6 [3.2]

— Leak / pressure testing of installed hoses and piping.— Operate all BOP functions from main control station and remote locations.— Confirm satisfactory operation from either pod.— Verify independence of the two mutually independent control systems for electrical or computer based BOP control systems.— Verify that the system resumes normal operation automatically when started or reset. — Check flow rates and response times.— Check actual volumetric capacity of accumulator unit (usable volume) and compare with required volume.— Check alarms (visual and audible) for low accumulator pressure, low rig air pressure, low manifold pilot pressure, low fluid level, autostart

/ autostop of pumps, and loss of power supply.— Check function in emergency shutdown situations.— Test acoustic panel (if installed).— Check calibration of manometers and thermometers.— Confirm safety valves (or temperature sensitive fuse plugs) on the accumulator nitrogen charging side.— Check calibration of pressure gauge flow meters.— Check operation of the regulator for closing pressure in case of loss of rig air.— Confirm pre-charge pressure of the accumulators. This can be accomplished by completely draining the units and witnessing a sudden

pressure drop when they are emptied. — Confirm emergency power supply for remote panel operation. Normally, remote panels are powered by 24V DC batteries, which are

continuously trickle charged. Confirm that loss of charging will give alarm but allow uninterrupted operation by the batteries.

Well Control Systems –Diverter

DNV-OS-E101 Ch.2 Sec.5 [3.3]

— Function test dogs on fixed support housing.— Leak test to confirm tightness of seals.— Operate all functions from main and remote panels.— Confirm valve sequence interlock (opening of overboard valve prior to closure of annular and mud system valves).

Well Control Systems – Choke and Kill System


— Valve seat sealing test at low pressure (approx. 200-300 psi) and rated working pressure. — Confirm operation of manual and remote chokes.— Confirm that manifold gauges and driller’s gauges correctly calibrated. — Function test of the Emergency Circulation Pump (normally the diesel driven cementing unit), including starting the pump and the alignment

/ operation of necessary valves under a (simulated) Black-Ship condition.— Pressure testing to maximum working pressure, including all high pressure (HP) piping and flexible hoses.— Confirm calibration of manometers and thermometers.




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Marine Riser System –Workover Riser System


DNV-OS-E101Ch.2 Sec.6 [3]

— Riser joints:

- Visual inspection to confirm no damage to sealing surfaces or distortion of pipes;- Pressure test to max working pressure (of choke, kill and booster lines).

— Telescopic joint:

- Visual inspection to confirm no damage to sealing surfaces or distortion of pipes;- Pressure test to confirm sealing at gooseneck connections.

— Flex joint:

- Visual inspection to confirm no damage to sealing surfaces or distortion of pipes;- Pressure test to confirm sealing.

— Riser wellhead connector:

- Function testing of mechanisms for lock, unlock and disconnect; - Leak / pressure testing of control hoses.

Heave Compensating System


— Pressure testing to max working pressure of installed piping and flexible hoses.— Confirm full extension of hydraulic cylinders.— Confirm safety valve setting.— Confirm operation and safety features of any dedicated compressors or auxiliary machinery.— Confirm operation of main valve control and indicators (weight and pressure).— Confirm operation of isolation valve control and indicators.— Confirm alignment and spacing of crown block guide wheels.— Confirm operation of crown position indicator.

Riser Tensioning System


— Pressure testing of installed piping and flexible hoses.— Stroking of tensioners to confirm free movement.— At full stroke, apply full system air pressure and check for leaks.— Confirm safety valve setting.— Alignment and free movement of sheaves to be confirmed.— Retractable sheaves to be load tested at full extension. — Operation of hydraulic and pneumatic systems to be confirmed.— Check clamping of wires to be carried out satisfactorily.— Confirm operation and safety features of any dedicated compressors or auxiliary machinery.— Verify proper functioning of slingshot valves.— Perform a function test on the tripsaver trolley over the full track length.— Perform a load test on the tripsaver trolley.— Confirm operation of limit switches, bumper stops, and parking bolts.




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Hoisting Equipment

DNV-OS-E101Ch.2 Sec.5[5.1/5.2]

— Confirm satisfactory fastening of derrick fixtures.— Confirm satisfactory functioning of guide dollies (especially retractable dollies).— Check calibration of deadline, load cell, etc.— Confirm correct torque of deadline clamp bolts.— Confirm operation of draw works main and auxiliary brakes.— Confirm operation of crown saver device.— Load test air winches to confirm correct installation and anchoring.— Confirm calibration and sealing of load limiting valves (air pressure regulators or hydraulic PSVs).

Rotating Equipment

DNV-OS-E101Ch.2 Sec.5[5.1/5.3]

— Confirm operation of rotary table safety features (e.g. purge).— Confirm calibration of driller’s console torque and RPM.

BOP and Pipe Handling Equipment


— All lifting appliances shall be tested in “as installed” condition prior to first use.— Load test as applicable.— Load test of pipe handling crane. The test load shall be hoisted, slewed and luffed at slow speed through the entire operating range. — Function testing of all safety features.— Check operation of parking bolts, limit switches, and bumper stops.— Confirm hoisting and traversing over full track length.— Tests for lifting appliances where safe working load (SWL) varies with operating radius, shall generally be performed with the appropriate

test load at maximum, minimum and at an intermediate radius.— Function test upper racking arm in all positions.— Test operation of spears.— Function test intermediate racking arm.— Confirm operation of standby cylinder under load.— Confirm operation of drill floor manipulator arm.— Confirm operation and safety features of hydraulic power unit.— Perform functional test of fingerboard.

BOP Overhead Crane


— All lifting appliances shall be tested in “as installed” condition prior to first use.— Load test of main and auxiliary hoists. Check main girder for excessive deflection.— Gantry and travelling cranes together with their trolleys, as applicable, shall be traversed and travelled over the full length of their track.— Check hose reel operation.— Pressure test installed high pressure (HP) piping.— Check operation of parking bolts, limit switches, and bumper stops.— Check calibration and sealing of load limiting valves (air pressure regulators or hydraulic PSVs).

BOP Bulkhead Guide


— Check traversing operation.— Check hose reel operation.— Check gripper function.— Check parking bolt function.— Check operation of hydraulic cylinders.— Check parking bolt arrangement.— Check unobstructed travel of frames.




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BOP Baseplate Trolley


— Perform load test, especially in cantilevered position.— Confirm travel from storage position to cantilevered position.— Confirm operation of hose reels.— Confirm operation of parking bolt arrangement.

BOP Carrier and Skid


— Function test BOP carrier or skid with BOP installed over full track length.— Confirm function of sea fastening equipment.— Confirm operation of hose reels.— Confirm operation of limit switches, bumper stops, parking bolts.

Bulk Storage, Mud and Cementing System –

Bulk Storage

DNV-OS-E101Ch.2 Sec.5[7.1/7.2]

— Pressure test to max working pressure (WP) of installed piping.— Pressure test pressure vessels to max WP.— Confirm operation and safety features of any dedicated compressors.— Confirm bulk transfer routes operate satisfactorily (may use air as medium).— Confirm operation of remote control valves and control panels.— Confirm safety valve setting.— Confirm operation of instrumentation (level alarms).— Confirm possibility to purge vent lines to prevent clogging on discharge side of the tanks safety valves / rupture discs.


Mud System

DNV-OS-E101Ch.2 Sec.5[7.1/7.3]

— Pressure testing to max working pressure (WP) of installed piping and flexible hoses.— Pressure test pressure vessels to max WP.— Pressure testing of standpipe manifold and mud system valves. Valve seat seal to be confirmed at low pressure (2-300 psi) and rated working

pressure.— Calibration of mud standpipe gauges and driller’s gauges to be confirmed.— Perform pressure test of rotary hose and swivel.— Confirm mud pump safety valve setting.— Confirm system for monitoring mud return flow rate.— Function test and pressure test, both low pressure (LP, 200-300psi) and max WP, of Kelly Cocks, IBOP, and valves in drill string.


Cementing System

DNV-OS-E101Ch.2 Sec.5[7.1/7.4]

— If the cement unit is the emergency pump, confirm crossover to mud system.— Pressure test to max working pressure (WP) of installed piping and flexible hoses.— Pressure test cement manifold and system valves. Valve seat seal to be confirmed at low pressure (2-300 psi) and rated working pressure.— Confirm pressure safety valve settings.— Confirm calibration of manifold gauges and driller’s gauges.— Safety functions of diesel engine to be tested (overspeed, high exhaust temperature, high cooling water temperature, and low lube oil

pressure).— If the cement pump is the emergency kill pump, the starting system for the diesel engine is to be reviewed to ensure that the engines can start

without use of the rig’s air system. Special attention is to be paid to non-return valves, if fitted between start air bottles and rig air systems. For diesel engines located in zone 2 areas, the safety functions on the engine are to be tested. Typically, these are lube oil low pressure, cooling water high temperature and the overspeed trips.

— Confirm insulation of the exhaust gas manifold.




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Well Testing and Associated Well Control System

DNV-OS-E101 Ch.2 Sec.5 [8.2]

— Pressure test to max working pressure (WP) of installed piping and flexible hoses.— Pressure test pressure vessels to max WP.— Confirm settings of safety valves and where the discharge from the valve proceeds to (i.e. burner boom or open air).— Confirm safety features (e.g. level controls, fire and gas detection).— Complete a full functional testing of the associated safety systems and ESD system. — Perform a function test of the fixed deluge system, cooling system on burner booms and rig side, and fire monitors.— Verify drainage system in well test area.— Confirm calibration of manifold gauges and control room gauges.— Confirm operation and safety features of any dedicated compressors.— The burner boom shall be tested with an overload of 25% related to the required weight of burner and spreader.

Man Riding Equipment

DNV-OS-E101Ch.2 Sec.5[9.1 to 9.5]

— All lifting appliances shall be tested in “as installed” condition prior to first use.— The test load shall be hoisted, slewed and luffed at slow speed through the entire operating range, as applicable, for the lifting appliance in

question.— Perform static brake capacity test for all brakes operating simultaneously at 2 ´ safe working load (SWL).— Perform static brake capacity test for each individual brake at 1.8 ´ SWL.— Perform dynamic brake capacity test for each individual brake at 1.25 ´ SWL.— Confirm operation of two independent locking devices.— Confirm emergency stop function. — Confirm that system is reset to function after an emergency stop.— Confirm that slack wire detection is functioning.— Confirm that load limiting devices and limit switches are functioning.— Confirm override possibilities between local and remote controls.— Confirm functioning of emergency hoisting system (if operating under deck or over open sea).— Confirm emergency lowering and hoisting functionality.— Confirm that at least three (3) turns of wire rope is remaining on the man riding winch drum at the lowest possible operating position.

Other Systems –

Winches


— Perform load test.— Function test skid or carrier with overload over full track length.— Confirm operation of limit switches, bumper stops, parking bolts.

DNV-OS-E101Ch.2 Sec.5 [10.1]

— Perform load test.— Confirm that winches are shielded for personnel protection and marked with safe working load (SWL).— Confirm correct function of operating handle or equivalent (e.g. push buttons).— Confirm functionality of automatic brake.— Confirm emergency lowering function of the lifting device.— Confirm load limit device and pressure safety valve setting.




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High Pressure Piping –

All Piping Systems


DNV-OS-D101Ch.2 Sec.6[6.1, 6.2 and 7.1]

— Where valves are provided at watertight boundaries to maintain watertight integrity, these valves shall be capable of being operated from a control room. Valve position indicators shall be provided at the remote control station.

— For remotely controlled valves, failure in power supply (electrical, hydraulic, and pneumatic) shall not cause:

- Opening of closed valves, closing of open valves on fuel oil tanks and in cooling water system for propulsion and power generating machinery.

— Hydrostatic testing - all valve bodies shall be subject to a hydrostatic test by the manufacturer at a pressure equal to 1.5 times the nominal pressure (the nominal pressure is the maximum allowable working pressure at room temperature). The following regulations are required:

- The test pressure need not be more than 70 bar in excess of the nominal pressure;- For valves fitted on unit or installation’s side and bottom, the test pressure shall not be less than five (5) bar;- For butterfly valves fitted on unit or installation’s side and bottom, shall also be hydrostatically tested at a pressure equal to five (5) bar

applied independently on each side of the closed disc.— Hydrostatic testing after assembly onboard - The piping shall be hydrostatically tested in accordance with the following:

- Fuel oil piping, heating coils in tanks, bilge, ballast and fire pipes, steam pipes, compressed air pipes and feed pipes of class III - 1.5 maximum working pressure, minimum four (4) bar.

- Hydraulic piping - 1.5 maximum working pressure. Test pressure need not exceed working pressure by more than 70 bar.- Piping systems made from non-metallic material - 1.5 maximum working pressure, minimum six (6) bar, minimum duration one (1) hour.

— All piping systems shall be properly flushed, checked for leakage and functionally tested under working conditions.— Function testing of closure devices i.w.o. watertight boundaries from control room / station - positive remote confirmation of the same.

High Pressure Piping –

General

DNV-OS-E101Ch.2 Sec.3[2.1 to 2.5]

— Monitor the yard’s system to document the fabrication process with reference to each spool and weld joint. This recording should contain material verification status, fit-up, edge penetration, WPS number, stress relief, hardness testing (for sour service), pressure testing, NDE and final inspection.

— All piping including fittings, flanges, valves, etc., shall be checked for correct schedules and rating.— Dimensions of all prefabricated pipework are to be checked against the spool drawing of latest revision.— Confirm that flanges are square to pipework. The flange face flatness shall be checked.— The fit-up shall be checked with particular attention to alignment, root gap, crack in tag weld, bevel configuration and cleanliness.— Special attention should be paid to systems which may be assembled of fittings and piping with poor weldability and heavy thickness.— The distance between two buttwelds, defined as the minimum distance between fusion lines at the surface of the welds, should not be less

than ten times the wall thickness, minimum 50 mm. In addition, the weld distance should be sufficient to avoid high preheating temperatures (100°C) on completed welds.

— Special attention should also be paid to penetration of high pressure pipes through steel bulkheads. No welding is to be performed in high pressure pipes.

— In areas where the temperatures are fluctuating (e.g. on deck), pipe lengths are to be given expansion possibilities. For such pipes, the flexibility of support is important.

— Pressure testing is to be witnessed.

Electrical Systems and Components


See section on Electrical Installations for requirements.




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Instrumentation, Control and Monitoring Systems


— See section on Instrumentation and Telecommunication systems for requirements.— On-board testing shall demonstrate, verify and document full functionality of all automation and safety systems and shall include:

- During installation, the correct function of individual equipment packages, together with establishment of correct parameters for automation and safety (time constants, set points, etc.);

- During installation and sea trials, the correct function of systems and integration of systems, including the ability of the automation and safety systems to keep any equipment under control (EUC) within the specified tolerances and carry out all safety / protective actions;

- The correct distribution, protection and capacity of power supplies;- Back-up and emergency automation and safety functions for essential unit/installation systems. The tests should demonstrate that the

essential installation functions are operable on the available back-up means of operation (as required in the relevant application standard), and in a situation where the normal system is disabled as far as practical. A copy of the approved test programme shall be kept on the installation, completed with final set points.

— The test program for harbour and sea trials shall be approved prior to tests by the Approval centre.— Hydraulic automation and shut-down systems with on or off regulation shall be tested with maximum return flow to verify that return headers

are adequately sized and free of blockages which could prevent correct system performance. — For pneumatic and hydraulic automation systems with accumulators used to ensure fail safe operation, tests shall include verification of

accumulator charge level and capacity.




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G.2 DNV survey scope for PROD




Oil and gas Processing Plant – General

DNV-OSS-102DNV-OS-E201

— This section includes instructions for surveys and tests in connection with installation of process topsides (PROD) equipment and systems. It is mainly to be used by the PMF and his / hers project team members at the yard/site.

— PROD notation covers design fabrication, installation and operational aspects of offshore production facilities which have potential to effect the safety of personnel, the safety of the vessel or pollution of the environment.

— PROD notation requires certification of production equipment and systems, and approval of complete production plant, which includes, as applicable, the following:

- production and export riser systems- well control system- riser compensating and tensioning system- hydrocarbon processing system- relief and flare system- production plant safety systems- production plant utility systems- water injection system- gas injection system- storage system- LNG Liquefaction system- crude offloading system- LNG regasification system- LNG transfer system.

— It is essential that the main boundaries of the production plant are known and clear to all parties, as applicable, these may be:

- riser shutdown valve- control system connection to sea floor system- connection to production buoy- shutdown valve at crude outlet from production plant to crude storage or loading buoy- shutdown valve between liquefaction plant and LNG storage tanks- shutdown valve between LNG storage and regasification plant, and between regasification plant and export line.

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Oil and gas Processing Plant – General (Continued)

DNV-OSS-102DNV-OS-E201(Continued)

— It is important to ensure that equipment installed onboard is certified in accordance with the Rules. This should be confirmed prior to testing of complete systems.

— Testing of systems and equipment specified in the Rules is to be carried out in accordance with written test procedures accepted by the Surveyor.— Such test programs may contain testing that exceeds the Rule requirement; however, the Surveyor should “Note” the program and ensure

that the rule requirements are complied with, as a minimum.— Although most equipment will normally have undergone shop testing at the manufacturer, it is important to ensure that equipment has not

been damaged under transportation and has been assembled, installed and integrated in the correct manner. Since time between equipment fabrication and installation onboard may be considerable, preservation and calibration issues may be present.

— Functional testing of systems is to be carried out, as far as possible, under working conditions.— SIT test to be carried out.— In connection with installation of heavy equipment, special attention should be paid to fixation and support.— Units with PROD class should have equipment lists for all category I equipment. The list should include DVR and PC numbers with name

of maker and equipment.— A copy of all the Product Certificate’s shall be filed at the local station.— For European situated units, and/or where DNV act’s as the Notified Body, European Directive requirements for equipment will also apply

for the topsides only. E.g Pressure Equipment (PED) Directive (97/23/EC), Potentially Explosive Atmospheres (ATEX) Directive 94/9/EC— DNV-OS-E201 makes reference to other standards. In particular, DNV-OS-A101 and Escape routes, F and G/ESD requirements to be addressed.

Main Production Structures – Process ModulesControl RoomsOther Topside Packages i.e.Metering PackageDeck BoilersPower GenerationEtc.


— Confirm satisfactory fastening of module structures and equipment to support stools and secondary structures.— Lifting lugs / pad eyes, if covered by Class.— Confirm required structural PFP installed as per design requirements— Rotating equipment mounts to be verified for acceptable vibration.— Coatings verified to design— Escape route arrangements to be verified. (Include lighting, surface coatings, marking etc.)

Other Secondary and Tertiary structures


— Confirm satisfactory integration and fastening arrangement.— Escape route arrangements to be verified. (Include lighting, surface coatings, marking etc.)— Coatings verified to design

Wellhead Control Systems –

Surface Controlled Subsea Safety Valves and Risers

DNV-OS-E201 Ch.2 Sec.1 [3.5]

DNV-OS-E201 Ch.2 Sec.4A100

— Ensure all mechanical and accidental impact protection for the riser system is provided as per design.— Confirm required PFP installed as per design requirements— Leak / pressure testing of installed risers, hoses and piping. Pressure testing to maximum working pressure.— Leak testing of SCSSV to be verified with code allowable limits (APR RP 14F)— Function test SCSSSV to confirm limit switches operate and time for closure is within code requirements.— Confirm correct valve position indication is provided— Confirm hydraulic oil cleanliness following installation and flushing.— Confirm hydraulic oil return is provided with hydrocarbon contamination protection.— If hydraulic oil is drained to sea on closure, confirm oil type is environmentally benign.— Confirm acoustic or other initiation system (if installed)




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Riser tensioning and disconnection Systems

DNV-OS-E201 Ch.2 Sec.1 [3.5]

DNV-OS-E201 Ch.2 Sec.4 [1.3]

— Where emergency disconnection of flexible risers is provided, important functionality shall be tested.— Confirm ability to test without actual disconnection.— Ensure all mechanical and accidental impact protection for the riser system is provided as per design.— Confirm required PFP installed as per design requirements— Disconnection to be tested from main control room and locally.— Disconnection shut off valve sequence to be verified before simulated disconnection occurs.— Critical components and functions of riser tensioning system to be verified e.g.

— Confirm alarms (visual and audible) for riser system excursions outside permissible design limits.


Surface Production Tree and wellhead control

DNV-OS-E201 Ch.2 Sec.1 [3.5]

DNV-OS-E201 Ch.2 Sec.4 [1.1]

— Confirm all mechanical and accidental impact protection is provided as per design.— Confirm required PFP installed as per design requirements— Leak / pressure test to demonstrate function wing and master valves. — Complete function testing of the Surface Production Tree to ensure all piping components and instrumentation have been installed in

accordance with P&ID’s and all relevant set points are correct. — Confirm wellhead control panel functionality.— Confirm hydraulic oil type, cleanliness, levels in wellhead control panel.— Confirm sequence and independence of production tree and subsea valve closure. Verify correct valves close upon initiation from the ESD

system depending on ESD level. (i.e. low level ESD may only close wing valve)— Confirm complete isolation of wells within performance criteria.— Confirm controlled shutdown of wellhead valves on loss or reduced supply pressure to wellhead panel.— Confirm alarms (visual and audible) for low accumulator pressure, low rig air pressure, low manifold pilot pressure, low fluid level, autostart

/ autostop of pumps, and loss of power supply, as applicable.

Turret System andSwivel Stack

— Confirm swivel barrier protection system— Turret bearing lubrication system— Turret bearing maintenance arrangements.— Slip ring commissioning test in accordance manufacturer requirements.— Confirm monitoring and control arrangements.— Configuration of the turret could have significant bearing on extent of commissioning tests therefore it is important to consider the

manufacturers test programme carefully to evaluate level of commissioning tests to verify.

Production Separation System

— Confirm module integration piping is complete, installed as per P&IDs, correctly supported; flange management processes satisfactorily completed and leak testing of complete integrated system is completed.

— Confirm dropped object protection (or procedural controls) are in place.— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with

P&ID’s and all relevant set points are correct. — Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s.— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.— Confirm necessary heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.




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Relief, Blowdown and depressurising systems

DNV-OS-E201 Ch.2 Sec.3

— Confirm module integration piping is complete, installed as per P&IDs, correctly supported, flange management processes satisfactorily completed and leak testing of complete integrated system is completed.

— Confirm that the blowdown valves, blowdown restriction orifice and blowdown/cold vent piping (including sizing and approximate routing) has been installed in accordance with the design.

— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with P&ID’s and all relevant set points are correct.

— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s. (Particular focus around relief and blowdown valves)

— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.— Confirm necessary heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.— Confirm dropped object protection (or procedural controls) are in place.— Confirm by tests that blowdown valves operate within the desired time period, in the correct valve sequence. (Ideally a full live system

blowdown test is be conducted however it may be undesirable to conduct this test following startup with the plant finally in a steady state so an alternative would be to review real time data logged by the control system of a blowdown event at some time after startup.

— Confirm that blowdown valves open when pressure in their respective actuating media is lost (including pressure in local energy storage devices if provided) or loss of signal from the ESD system, i.e normally energized.

— Confirm relief valve interlocking arrangement or procedures.— Confirm and test knock out drum set points.— If not routed to the flare system, confirm other relief devices route to safe location as per drawings particularly hazardous area drawings as

applicable.— Confirm cold vents are provided with weather protection.— Confirm cold vents provided with local fire system, and tested.— Confirm relief and blowdown piping is self-draining, there are no restriction to flow (other than properly sized orifaces) and that drain points

are provided at unavoidable low points.— Confirm flare pilot is supplied from two sources of pilot gas.— Confirm redundant ignition system operates effectively i.e. simulate flame out— Confirm purging/snuffing arrangements are available and proceduralised.— Confirm heat radiation is within acceptable levels, post startup.

Gas Treatment and Compression Systems

DNV-OS-E201 Ch.2 Sec.2 [3.1]


— Confirm necessary heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.— Confirm dropped object protection (or procedural controls) are in place.— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with

P&ID’s and all relevant set points are correct. — Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s. (Particular focus around

relief and blowdown valves)— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.— Off specification fuel gas trips to be confirmed.




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Water and Gas Injection

DNV-OS-E201 Ch.2 Sec.2 [4.1]


— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.— Confirm dropped object protection (or procedural controls) are in place.— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with


relief and blowdown valves)— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.— Confirm dropped object protection (or procedural controls) are in place.— Confirm correct installation of non-return valves at injection points to wellhead— Test injection point ESD valve.

Packaged Rotating Equipment i.e. compressors, water injection pumps, turbines

— Confirm location of manual release buttons— Confirm location, numbers and type of fire detectors— Confirm correct functioning of interlocks on doors, if applicable— Confirm the sequencing of fire detection, rotating equipment shutdown, fire dampers closing and fire extinguishing— Confirm air tightness, differential pressure of enclosure— Verify site connected piping, i.e. fuel, lube oil to be correctly installed, hydro tested, flushed/cleaned that all exterior surfaces are below

220°C at steady state. — Verify critical unit control panel trips and intertrips to ICSS/PSD/ESD systems.— Ensure manufacturer approved test programme followed.— The vibrations in the entire speed range to be confirmed as insignificant.— Check for leakage of lube oil and fuel oil before, during and after the commissioning trial.— Check that all ancillaries and piping are visually inspected for vibration during testing. Checks to be done at all different load conditions to

detect resonance problems and identify an new support requirements.— Refer to appendix F.4 Electrical Installations for generators and turbines

Water Treament and disposal


— Confirm oil in water analyser is installed, calibrated and functional. Off specification recycle arrangement operational.— Confirm overboard dump arrangement, i.e. hazardous area.

Heating and cooling Systems

DNV-OS-E201 Ch.2 Sec.2 [5.1]

— Confirm hydrocarbon leakage detection systems are installed and operational.— Confirm module integration piping is complete, installed as per P&IDs, correctly supported, flange management processes satisfactorily

completed and leak testing of complete integrated system is completed.— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with


relief and blowdown valves)— Confirm inhibits, overrides and non-standard system configurations are correctly recorded in accordance with procedure.— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.— Confirm dropped object protection (or procedural controls) are in place.




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Chemical Injection Systems

DNV-OS-E201 Ch.2 Sec.2 [6.1]

— Confirm injection devices (quills) are installed correctly i.e. correct part of the process stream.— Confirm non-return valves are installed.— For wellhead injection, automatic shutdowns valves to be tested.— Confirm chemical storage area is correctly bunded.— Confirm safety shower and eyewash arrangements.— Confirm any additional fire fighting requirements for specific chemicals i.e. methanol resistant foam

Drainage Systems

DNV-OS-E201 Ch.2 Sec.2 [7.1]

— To be installed under process equipment where spillage or minor leaks could occur i.e.

— atmospheric tanks and pressure vessels with multiple flanges and instruments— pumps— heat exchangers— rotating machinery— sample points— offloading system— pig receivers and launchers, etc.

— Confirm drip trays drain point installed on opposite corners of the drip tray to allow for vessel motions. Confirm liquid seal arrangement (or other method to prevent gas migration) is installed and liquid level checked.

— Confirm open deck drainage system is correctly installed and operational for each module (probably during deluge test).— Confirm segregation between hazardous and non-hazardous open drain systems.— Confirm drain tank vent arrangements i.e. safe location, blanketing, weather protection, flame arrestors, dip pipes.— Confirm module integration piping is complete, installed as per P&IDs, correctly supported, flange management processes satisfactorily

completed and leak testing of complete integrated system is completed.— Complete function testing of the PSD system to ensure all piping components and instrumentation have been installed in accordance with


relief and blowdown valves)— Confirm inhibits, overrides and non-standard system configurations are correctly recorded in accordance with procedure.— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.— Confirm dropped object protection (or procedural controls) are in place.




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Export System DNV-OS-E201 Ch.2 Sec.4 [3.1]


— Confirm offloading arrangement is located the required distance from the accommodation and associated access ways and air intakes.— Confirm floating hoses and hawser are arranged such that foaling of propellers or other system is not possible.— Confirm external offloading shutdown arrangements, i.e. telemetry/radio signal from shuttle tanker arrangements, hawser tension

monitoring, relative positioning monitoring, and receiving terminal, as applicable. — Confirm hose real locking mechanism.— Confirm hose draining procedures.— Confirm offloading shutdown via ESD from pushbuttons and CCR.— Confirm offloading control station operation.— Confirm offload/export pump protection systems, set points and response times are correctly implemented.— Complete function testing of the offload/export system to ensure all piping components and instrumentation have been installed in

accordance with P&ID’s and all relevant set points are correct. — Confirm normal, automatic and manual emergency release mechanisms.— Minimum flow recycle and non-return valve arrangements to be verified.— Confirm inhibits, overrides and non-standard system configurations are correctly recorded in accordance with procedure.— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in accordance with P&ID’s.— Confirm arrangement for pig launchers and receivers, i.e. interlocks, instrumentation and bleed arrangements to prevent inadvertent opening

while pressurised.

Ventilation Arrangements – External Rooms

DNV-OS-D101 Ch.2 Sec.4 [11.1]

— Confirm overpressure ventilation arrangement including alarms at manned location.— Confirm air intake fire and gas detection arrangements and related fire damper closure times, fan trips.— Confirm gas tight door self-closing mechanisms. Escape hatches to be checked.— Confirm electrical conduits are suitably sealed.— Confirm air intakes are located 3m outside hazardous areas.

Electrical Systems and Components

DNV-OS-D201DNV-OS-A101

— See section on Electrical installations for requirements.— Confirm hazardous area drawing accurately reflect release sources and ventilation arrangements— Confirm that equipment and structures are suitable earthed.— Confirm the electrical equipment suitable for hazardous area is suitable rated (EX certification)

Inert Gas System DNV Rules for Ships Pt.5 Ch.3 Sec.11

— Confirm installation of inert gas piping system in accordance with approved drawings.— Confirm the inert gas system is capable of supplying a gas or mixture of gases with an oxygen content of— not more than 5% at the correct flowrate, temperature and pressure.— Confirm that the cargo tank blanketing system (IG system) maintains an oxygen deficient atmosphere in the cargo tanks under all foreseeable

operating conditions. Oxygen content not exceeding 8% by volume. Confirm acceptable dilution in cargo tanks.— Confirm valve locking and interlocking arrangement or procedures.— Confirm pressure/vacuum breaking devices installed.— Confirm deck seal supply pump is running and maintaining levels in the deck seal. — Confirm the inert gas system is capable of supplying a gas or mixture of gases with an oxygen content of— not more than 5%— Confirm all instrumentation feedback to the Inert gas control system is functioning and integrated where appropriate with ICSS/ESD/PSD

system.— Portable instruments for measuring oxygen and flammable vapour concentration to be provided and used to verify instrumentation readings.




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Instrumentation, Control and Monitoring Systems


DNV-OS-D202

— See section on Instrumentation and Telecommunication systems for requirements.— On-board testing shall demonstrate, verify and document full functionality of all automation and safety systems and shall include:

- During installation, the correct function of individual equipment packages, together with establishment of correct parameters for automation and safety (time constants, set points, etc.)

- During installation and sea trials, the correct function of systems and integration of systems, including the ability of the automation and safety systems to keep any equipment under control (EUC) within the specified tolerances and carry out all safety / protective actions;

- The correct distribution, protection and capacity of power supplies- Back-up and emergency automation and safety functions for essential unit/installation systems. The tests should demonstrate that the

essential installation functions are operable on the available back-up means of operation (as required in the relevant application standard), and in a situation where the normal system is disabled as far as practical. A copy of the approved test programme shall be kept on the installation, completed with final set points.

— Hydraulic automation and shut-down systems with on or off regulation shall be tested with maximum return flow to verify that return headers are adequately sized and free of blockages which could prevent correct system performance.

— For pneumatic and hydraulic automation systems with accumulators used to ensure fail safe operation, tests shall include verification of accumulator charge level and capacity.

Instrument Air system


— Confirm generator integration piping is complete, installed as per P&IDs — Confirm small bore tubing is complete, installed as per P&IDs, correctly supported.— Confirm dew points, liquid traps and regulator set points correct.

Nitrogen Generation System

Rule for Ship Pt.5 Ch.3

— Confirm generator integration piping is complete, installed as per P&IDs, correctly supported; flange management processes and small bore tubing satisfactorily completed and leak testing of complete integrated system is completed.

— Confirm 02 detection operational.

Escape and Communication

DNV-OS-A101Ch.2 Sec.5

— Confirmed two escape from modules and rooms in the topside areas is in accordance with approved designs.— Surface coatings and marking to be confirmed adequate.— PA/GA tests to be conducted on both ‘A’ and ‘B’ to confirm alarms are audible in process areas. Flashing beacons to be confirmed in high

noise areas.— Confirm signage— Confirm adequate lighting on escape routes on normal and emergency battery backup.






CHANGES – HISTORIC – Page 75

CHANGES – HISTORIC

Note that historic changes older than the editions shown below have not been included. Older historic changes(if any) may be retrieved through http://www.dnv.com.

March 2012 edition

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DNV-RP-A205: Offshore Classification Projects - Testing ... · PDF fileDET N ORSKE V ERITAS AS Recommended Practice DNV-RP-A205, October 2013 CHANGES – CURRENT – Page 3 CHANGES