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ETI MINE WORKS GENERAL MANAGEMENT

BANDIRMA BORON AND ACID WORKS

TECHNICAL SPECIFICATIONS FOR PROCUREMENT OF 2 PUSHER TYPE

HORIZONTAL CENTRIFUGES

FOR THE BORAX FACTORY

May / 2016

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CONTENTS

1. SUBJECT OF WORK

2. REQUIRED QUANTITY

3. BID SCOPE AND REQUIRED CHARACTERISTICS

4. WORK ENVIRONMENT AND CONDITIONS

5. WORK COMMENCEMENT DATE, DELIVERY TERM, DELIVERY PLACE AND CONDITIONS

6. REQUIRED DOCUMENTS, INFORMATION AND SAMPLE

7. BID AND PAYMENT METHOD

8. INSTALLATION, TEST, STARTUP AND PERFORMANCE TESTS

9. ACCEPTANCE PROCESSES

10. WARRANTY

11. FINES

12. OTHER ISSUES

13. ARTICLES OF THE TECHNICAL SPECIFICATIONS

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TECHNICAL SPECIFICATIONS FOR PROCUREMENT OF 2 PUSHER TYPE HORIZONTAL CENTRIFUGES FOR THE BORAX FACTORY

1. SUBJECT OF WORK:1.1 “2 Two Phased Pusher Type Horizontal Centrifuges” will be procured for Bandırma

Boron and Acid Works of Eti Mine Works General Management.1.2 Eti Mine Works General Management will be referred as the “ENTITY”, Bandırma Boron

and Acid Works will be referred as the “PLANT MANAGEMENT”, the bidding firms will be referred to as the “BIDDER” and the successful bidder of the tender will be referred to as the “CONTRACTOR” herein under.

2- REQUIRED QUANTITY:

2 two phased Pusher Type Horizontal Centrifuges with 12 ton/h output capacity will be purchased.

3- BID SCOPE AND REQUIREMENTS:

3.1 REQUIRED CHARACTERISTICS:

The 2 Two Phased Pusher Type Horizontal Centrifuges to be installed at the Borax Works will be designed for an output capacity of 12.000 kg/h.

Each centrifuge will be operate on 24 hours a day and 330 days a year basis.

The Technical Characteristics are given herein below. Accordingly;

Type: Pusher type two phased horizontal centrifugeSolid material output of the centrifuge : Min. 12 ton/hCentrifuge feeding amount : To be specified by the bidder according to Product output

Centrifuge feeding type : Continuous from the crystallizer and adjustable.Centrifuge Output Moisture

: max. 6 % (by weight)max. Speed : 1800 rpm. (adjustable)Drive mechanism : V-Belt and PulleyOperation Temperature : 65 °C max. (Product feeding temperature) Machine design temperatureto be designed)

: 100 °C max (above Washing water temperature)

Centrifuge Basket : Two phased, cylindrical Sieve size : 200 micron (max)

Centrifuge basket material shall be selected by the BIDDER with a stainless steel base according to the characteristics of the solution.

Components of the equipment coming in contact with the product shall be resistant against abrasion and replaceable. Suitable flexible connection elements shall be used at the feeder and output connections of the centrifuges with due consideration of the vibration situation.

Centrifuge motors will be started with frequency converter and the speed setting of the centrifuges will be over the converter.

System necessary for continuous washing of the Sieve and Cake inside the centrifuge(centrifuges shall be equipped with product and basket washing mechanism with 80-90°C water in order to provide for washing of the sieves against potential blocking and washing of the crystals for improvement of purity.

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Centrifuge will have devices required for discharging of the centrifuge filtrate and the washing water from different sections,

Centrifuges will be equipped with a vibration measurement device, which will deactivate the system automatically in the event of vibration level set by the Entity,

Local control panels for operation of the centrifuges will be provided. Control cabinets housing all electrical equipment of the centrifuges will be provided, Other systems which are not specified herein but required for complete operation of the

centrifuges and the equipment or other systems foreseen by the CONTRACTOR will be included into the scope of this bid.

3.2 BID SCOPE:

The bids that will be presented for the centrifuge systems to be delivered will be in the form of a package covering;

Engineering Services All equipment, accessories, pipes and fittings, valves, bolts, nuts, connection flanges,

from the input pipe of the centrifuge to the output pipe flange, Electrical, Instrumentation and Automation equipment, Supervision services (installation control, startup and performance tests).

3.2.1 Engineering Services:

The engineering services shall include following: Detailed process flow diagram Detailed P&I Diagram Detailed Mechanical, Electrical - Automation Projects Detailed Construction Designs, Foundation and Load Drawings, frame anchorage

details detailed Layout and installation drawings Equipment characteristics Pipe classes and layout Instrument datasheets Heat and material balance of the System Installation, Operation and Maintenance Instructions

3.2.2 Electrical, Instrumentation and Automation Works,

ENTITY requires 2 sets of 2 phased pusher type horizontal centrifuges which are completely the same with one another (Operator panel, PLC, MCC panel etc.) and which operate independently. . References to the Centrifuge or equipment connected to the Centrifuge in the following sections of the document will be construed as references to 1 set of these 2 sets of Centrifuges or the parts of 1 set of these centrifuges.

Centrifuge shall be PLC controlled and shall have fully automatic operation. All parameters required for operation of the centrifuge (pressure, temperature, vibration, level etc.) shall be displayed and controlled from an Operator to be placed at the centrifuge location. Operator Panel will have a 17-inch, high contrast touchscreen. Automatic operation of all control and protection functions of the centrifuge (rpm setting, vibration, oil temperature and pressure control and protection, motor thermal protection etc.) shall be possible through the control system.

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Moreover, the Operator Panel will have the following characteristics: Audio alarm with a buzzer, Industrial Touchscreen Panel will be PC type, Transmission of the panel temperature to PLC and inclusion to alarms will be possible. Transfer of LED statuses to the PLC will be possible. TFT screen with LED support will be provided. OPC server will be integrated on it. Display of the supply voltage will be possible.

All equipment and materials of the electrical automation system shall be in conformity with the IEC standards. The PLC brand to be shall be an internationally recognized establishment with widespread servicing facilities throughout the country.

Password protection will be provided on the operator panel to prevent unauthorized access. Centrifuge Control System will be integrated to the existing ABB 800xA DCS system at the control room of the Borax Factory through Profinet, Profibus, Modbus TCP, OPC etc. advanced communication protocols. Communication program etc. infrastructure necessary for monitoring and controlling through the DCS control system will be available on the system.

The system controller must be equipped with diagnostic characteristics and diagnostic monitoring of the controller (operation status – operation/failure etc.) must be possible automatically. Control panel and Emergency-Stop buttons shall be placed at the site as close as possible for emergencies. Emergency-Stop button shall stop the centrifuge immediately. Startup of the system will not be possible without the pressed Emergency-Button being placed into its original position and the “Emergency-Stop Reset” push button to be placed at the centrifuge location being pressed. Clever site devices shall communicate with the PLC over HART Protocol. .

As valves and instruments shall operate in an environment exposed to dust and steam, they will be of IP67 protection class.

CONTRACTOR will acquire the material orders related with the subject works of the scope after receiving the approval of the PLANT MANAGEMENT.

The control system to be built must support expandable structure and must use the regular and hierarchical programming method.

All details displayed in the P&I diagrams shall be written in Turkish in the “explanations” sections.

Main supply input at panels, the UPS output and 24 VDC power source outputs shall be protected with high voltage conductors.

Instrument devices to be used in the work scope must fulfill the state-of-the art requirements and must be suitable for operation at values (temperature, pressure etc.) required for the process. CONTRACTOR will present instruments to be used to the approval of the PLANT MANAGEMENT and will acquire them after receiving the approval of the PLANT MANAGEMENT. Production calibration certificates related with the instruments will be presented to the CONTRACTING ENTITY.

Independent of the 24 VDC power supplies of the control system, 24 VDC 40 supply sources with backup and DC UPS supply sources will be provided by the contractor for the site instruments. These supply sources will be used in the supply of gates, valves, sensors, alarm warning lamps, horns etc. receivers at the site and the control system will be fully isolated from the supply resources.

Fittings in conformity with the cable cross-sections shall be used at the inputs of the dustproof panels located at the site. These panels shall be suitable for secure installation of the fittings and easily installation of the cable inputs and connections. The cable inputs shall always be

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from below. Tightness shall be ensured after the cable connections are made. Identification information forms shall be provided for all equipment and devices in the system.

Identification information sheets shall include all information related with physical structure, technical structure, location, pos. no. and calibration of all related systems, equipment and devices in the system.

The connectors providing the input of analog signals shall be intelligent type with fuse. The positioners on all control valves in the system shall provide for indication of the valve

position and receipt of the feed-back signal. All electrical equipment, control panels, site local control boxes, connection boxes, site devices,

instruments, cables entering the equipment shall be marked with metal or plastic labels, depending on their respective locations, on which the codes and numbers are engraved.

Labels of the site devices and pos. numbers of instruments shall be located on themselves in the form of metal labels.The labels of the controls and indicators shall be located at the back side of the panel covers.

All Automation Systems and the Operator Stations containing the local control panel shall be supplied through an Uninterrupted Power Supply (UPS). In the event of power failure, the operator screens shall not be switched off and the monitoring of the process shall be possible. Power capable of fulfilling the power requirement of the system shall be specified in the bid and shall be supplied from the UPS located at the Borax Factory control center.

All digital inputs from the site to the MCC panels and the output signals shall be connected to the control system over a relay and the analog input and output signals shall be connected over 3-way galvanic isolators. PT100 inputs shall be connected to the system with isolation converters. The input signal to the Control system shall be 4-20 mA.

The relay, Signal Isolators must be capable of providing the following characteristics.

Signal Isolator Characteristics (for Analogous Signals)

Input Signal Current : 4-20 mA Max Input Current : 28 mA Input Current Resistance : 50 Ohm Transmitted Voltage Range : 14.7 VDC...25.5 VDC Output Signal Current Range : 4-20 mA Max. Output Current : 28 mA Output Load Resistance : < 500 Ohm Supply voltage : 19.2 VDC...30VDC Installation Type : Rail click-fit type Response time : 3.5 ms Test voltage : 1.5 kV AC (50Hz. 1 minute) No. of channels : 1.2 with status LED

Relay characteristics (for Digital Signals)

To be in conformity with the VDE 0160 (DIN EN 50 178) safety isolation and CE norms. To be rail mounted, universal type with a thickness of 6 mm. To be equipped with a status led on top, which shall be lit upon powering. To be equipped with a sliding switch and removal of the relay from the slot shall be possible automatically when said switch is retracted. Response period shall not be greater than 5 ms. Release time shall not be greater than 8 ms. . Maximum switching voltage: 250 250AC/DC Continuous contact current 6A Test voltage: 4 kV, 50Hz, 1 min.

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with status LED

Control System (PLC) Characteristics (1 for Each Centrifuge) Centrifuge Control System (software and hardware) will have an open code structure so as to

enable connection to the main control system architecture it will operate with. Depending on the bus system used (in its internal controller), one node of the same bus system will be left as spare for external connections, so as to enable information exchange over the OPC with the main control system. Bidder firms will present the memory map of their control programs to the PLANT MANAGEMENT.

Control system of each Centrifuge will be programmed so as to provide for both display and control over the factory’s main control system (DCS). All “software and hardware required for this purpose will be provided and integration to the existing system” will be realized by the contractor.

The programming language to be used will be suitable for programming and in conformity with IEC 61131 standards.

System must be capable of continuous testing and automatic monitoring of the communication modules.

Supply voltage : 24VDC (Tolerance: ± 20%)

CPU characteristics Speed : 1.5 ms Program Capacity : 256 KB Flash Memory : 4 MB Communication speed between the control system and the operator servers shall be minimum 100 Mbit/s and shall communicate over INDUSTRIAL ETHERNET. Addition of communication modules such as MODBUS, INTERBUS, PROFİBUS, ETHERNET and PROFİNET CC-LINK shall be possible for information exchange with the control system.

Characteristics of the Signal Modules The number of channels in the modules should be limited in order to ensure affecting of minimum points in the event of a failure in the module. For this reason, the Analogous input and output modules must be with minimum 2, maximum 8 channels and the digital input and output modules must be with maximum 32 channels. Analogous input and output modules shall be over 4-20 mA and digital input and outputs shall be over dry contacts. Diagnostic alarm on channel basis must be possible Protection class must be min. IP 20.

Digital Input Cards (DI): Input Volume : 24VDC Display on module : Channel status display with LED Isolation : 500 Vrms

Digital Output Cards (DO): Output Voltage : 24VDC Display on module : Channel status display with LED Isolation : 500 Vrms Output Protection : Internal overload protection

Analog Input Cards (AI): Operation Range : 4-20mA, 1.5V Isolation : 500 Vrms

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Output Protection : Internal overload protection Measurement Precision : 16 bit Must support HART protocol.

Analog Output Cards (AO):

Operation Range : 4-20mA Isolation : 500 Vrms Output Protection : Internal overload protection Measurement Precision : 16 bits

Electrical Panels and Electrical Installation: All works in the scope of the equipment must be in conformity with the scientific and technical

norms, all requirements necessary based on the nature of the work, related regulations (Ekat, Tedaş, myd etc.) and these will be under the contractor’s responsibility even if they are not specified in the specifications.

Furthermore, conformity to T.S.E., IEC, VDE, EN, DIN standards will be required for materials to be supplied, equipment to be produced and all kinds of installation works to be realized pursuant to the specifications.

Technical data, structure and related standards regarding all materials offered in the bid will be provided.

All materials to be supplied by the Contractor shall be in conformity with the TSE, VDE and IEC standards. All materials shall be dimensioned in line with the structure of the place and systems of use and shall have suitable characteristics in terms of type and structure. Protection and selectivity structure shall be ensured. Non-conforming materials shall not be accepted. Electrical system materials to be supplied by the Contractor shall be Siemens, ABB, Telemekanik or equivalent quality and shall bear the CE marking.

0,4 KV main distribution panels must have passed type tests at international laboratories in conformity with T500 (TSK), DIN VDE 0660 and IEC-Publ.439-l DIN VDE 0106, T100 TSE 3367 revision norms and standards and must have type test certificates.

Installations and all works performed in the project scope, panels and materials supplied shall be in conformity with the electrical strong current facilities regulations, electrical internal facilities regulations and regulations on grounding in electrical facilities.

Cables used inside the panel will be installed appropriately with plastic ducts, spiral holders, spiral plastic tube and similar cabling accessories. Cables with different voltage levels will be placed inside different ducts. The cabling accessory materials specified above will be Rehau, legrand, EAE or equivalent quality.

Connectors to be used inside the panel shall be Phoenix, Weidmuller or equivalent brand and shall each be labeled according to the electrical designs. Connector blocks shall be placed vertically on the panel and while the cables from the site shall be installed in the same direction, the other direction of the connector block shall be used for the cables to the distribution inside the panel.

Connector blocks shall consist of separate connectors used for cables at the same voltage level. In other words, separate connector blocks shall be isolated from one another for the 380 V, 220 V, 24 V and instrumentation cables in the panel.

380 V and 220 V bars, made of hard-drawn electrolyte copper, providing for energy distribution, shall be located on the top section of the panel and shall be isolated with a suitable material (plexiglass) against potential contact.

Bars shall be secured on suitable support isolators. The cross-sections of the bars shall be calculated with due consideration of the panel’s fixed power and short-circuiting power. Grounding bar shall be placed at the lower section of the panel. A separate grounding bar shall be placed at the related section of the PLC equipment of the panel for grounding of the PLC equipment and the instrumentation system.

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MCC panels shall have a 380/220 V Isolation transformer and energy analyzer, of a capacity calculated by the firm for the main control circuit equipment, including the main disconnector at the input cubicle of the MCC panels along with 220 V distribution. Isolation transformer will be placed in the lower section of the cubicle. Energy consumption of each centrifuge shall be measurable. Energy analyzers will be capable of measuring individual current harmonics up to minimum 49th harmonics. Energy analyzers will be capable of measuring and recording phase currents with time interval selection, mean current, neutral current, demand current, demand voltage, mean voltage, power demand, power energy, power factor and frequency values. Energy analyzers shall be with a communication port supporting the communication protocol compatible with RS485-MODBUS and/or DCS control system. It will be equipped with a 20-character screen which is easy to read. Voltage, current, power will be displayed on the screen at the same time. Energy analyzers will be selected so as to operate with full compatibility with the existing energy supervision system.

Low voltage electrical panels shall be suitable for the installation location and with isolation levels provided according to their operation conditions and the Isolation transformer for control voltage shall have adequate resistance against short circuiting conditions, in electrical and mechanical terms.

Low voltage electricity distribution panels shall be made of 2 mm DKP metal sheets and coated with electrostatic powder paint and shall provide for wall mounting. Metal internal and external surfaces of the panels shall be protected against corrosion and painted with Ral 7032 electrostatic paint. In proportion with the volumes of the panels, they shall be equipped with a fan and illumination system. Fans inside each panel shall operate and stop according to the set temperature. Panels shall be in conformity with IP55 protection class.

If the terminals of the devices used on the panel are with connectors and multiple-wired conductors will be connected to these, the ends of the conductors must be connected with a ferrule. Connections without connectors will be realized with a slitless type cable lug. Connections with connectors will be made directly in single core conductors.

Panel shall be designed so as to enable all cable inputs and outputs from below, and the lower sections of the panel doors of the panels shall be equipped with ventilation shutters. Bolts, washers, shims, nuts etc. fasteners to be used on the panels shall be coated with cadmium or chromium.

Installation of the panels will not be started before the electric-automation circuit diagrams, panel drawing, materials list and panel appearance image are presented to the ENTITY. The colors of the cables to be used on the panels will be specified on the electricity-automation circuit diagrams. Panel appearance and dimensions are provided in the annex representatively; the MCC-PLC panel for 1 centrifuge set must be designed so as to have a maximum widths (w) of 250 cm, height (h) of 210 cm, including ventilation fans, and depth (d) 60 cm.

The workshop drawings to be prepared in computer environment will include single line - principle diagrams, control circuits current path diagrams, connector diagrams, devices lists, circuit cables lists, device cables lists, panel appearance and device layout drawings, and these will be in A4 size.

The room where the electric-automation panels will be installed is at a distance of maximum 100 m to the centrifuges, and the designs, lists of cables, technical characteristics, order codes required for assembly will be provided by the CONTRACTOR as the cabling and assembly workmanship between the panel and the centrifuge system equipment will be provided by the ENTITY. Weak current cables shall be a shielded cable (LICYC) with minimum 1.5 mm2 cross-section and 2 cores redundancy.

Cables to be used shall be of suitable type for the equipment that they shall be supplying and shall be selected with cross-sections suitable for the current carrying capacities. All cable cross-sections will be shown in their designs.

Cables shall be Pirelli, Ergür, Hes or equivalent quality. Cables shall be installed properly in conformity without any crossover and will be secured with cable ties. No splicing will be applied in the cables installed between the panels and the equipment.

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The body of each electrical panel, the busbar sections, measurement tools, fuses, switches, cable inputs and outputs, connectors and control circuits shall be labeled as shown in the projects. In other words, the site labels and electrical-automation project designations, must be exactly the same when the system is started up and handed over.

All labeling to be made shall be written with a labeling machine and all connection points including cable protection spirals shall have a label on them. In other words, labeling-numbering will clear, plain and simple so that each cable (control or power) inside the panel and from the panel can be followed easily from the starting point to the furthermost end point (instrument, motor, etc.).

All motors shall have gray cast iron body, H isolation class and IE3 efficiency class. The motors shall be completely enclosed and with fan cooling. The protection level of the motors shall be minimum IP-55. PTC type thermal protection must be provided on the windings of all electricity motors. PTC relay outputs shall be transferred to the control system. Electrical motors shall be produced so as to enable startup with the drive.

Frequency convertors:

Frequency converters shall be with EMC filter (in full compliance with the EMC instructions) and shall have current harmonics of less than 5%.

All frequency converters must be of heavy duty type and in conformity with the EN 55011, EN 50178, EN61800-3, EN 61000-3-2, EN 61000-3-4, EN/IEC 61000-4-2, EN/IEC 61000-4-3, IEEE 519 standards.

It must have a drive flux vector control (PWM), direct torque control (DTC) or similar technologies.

Drive must be capable of communicating with the PC software tools as standard. The efficiency of the drive at full load must be 97% or better. Drive must have a main switch as standard. The control panel of the drive must provide for programming and control when the main cover

of the control panel is closed. All equipment must be applied with due consideration of EMC compatibility and the

regulations. Without extra safety measures being necessary, the motor output shall be 100% short-circuit

protected and the power and control shall have solid galvanic insulation. Converters shall firstly ensure operation of the motor without stopping it while rotating. The

converter shall begin to energize and start the motor and accelerate the speed of rotation until it reaches the reference speed entered previously. This feature shall be applicable in both directions.

At points where the converter increases the magnetization of the motor and a low braking power is needed, a flux braking facility shall be available for dispersing the extra energy. It should have a protection against the application of inverse voltage to its outlet.

At some faults selected by fault management, it should be possible to perform an automatic reset whose number and periods can be set in advance.

In converters to be used, the times for motor start and stop shall be adjustable. Drives shall have protections against overcurrent, short-circuiting, input voltage loss, motor

overload and underload, overvoltage/undervoltage, overspeed, over-temperature, motor failure stop and other internal faults.

Drives shall have a digital screen for programming and controlling purposes. In drives, changes of parameter shall be made on the control screen and the Main Control System (DCS) by using the keypad, where parameter settings shall be easily accessible. There shall be password protection for preventing changes of parameters by unauthorized persons.

Drives shall have an automatic ramp decreasing function to prevent tripping in cases where acceleration and deceleration ramps are above the drive capacity. If in addition, the drive does

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not have enough capacity to withstand transient overloads, its speed shall be capable of being decreased to prevent an overcurrent trip (fault).

Reference values such as the speed, torque, current, voltage, frequency, speed, etc relating to frequency converters shall be monitored and controlled on the control system SCADA screen.

Details related with the motors (motor name, power, startup type, converter make and model if with converter) will be placed on the front side of each panel in a plastic casing, if there are electrical motor controls inside the panel. The communication and connection configuration will be prepared for the whole PLC system and an easily comprehensible printout in color will be provided in a plastic enclosure inside the PLC-control panel.

Electric-automation circuit diagrams, current path diagrams and connector diagrams showing the final status of the status applied or to be applied will be prepared and given by the Contractor in 4 hardcopies and 3 softcopies on CD/DVD. One of the 4 hardcopies of the electric-automation circuit diagrams to be provided by the panel manufacturer will be placed inside the pockets in the panels at the panel location by the contractor.

Every input-output of the PLC (analog input, analog output, digital input, digital output) will be with minimum 10% redundancy.

PLC program used in the system will be provided to the ENTITY in as-built form used at the site. The license (for 1 person at any time) for the software on which the PLC program is developed will be handed over by the contractor to the ENTITY in purchased form for use by the ENTITY in works such as troubleshooting and addition of new features.

LV power and control cables must be produced in conformity with the requirements of TSE and NYY type cables will be used. Three-phase cables; PHASE ( R ) = BLACK; PHASE ( S ) = BROWN; PHASE ( T ) = RED; NEUTRAL( N ) = LIGHT BLUE; GROUND( E ) = GREEN– YELLOW1 phase cables; PHASE = BROWN ; NEUTRAL = LIGHT BLUE ; GROUND= GREEN-YELLOW

3.3 Design Parameters: This article is left blank.

4. WORK ENVIRONMENT AND CONDITIONS:4.1 Work Environment:

Centrifuge systems will operate at an elevation of +6.00 inside the existing indoor building. External environment temperature ranges between - 10°C and 45°C. Dust, moisture and temperature conditions are present at the plant and all devices shall be

equipped with necessary protection. The location where the centrifuge systems will be installed is a 1st degree seismic

zone and it is situated at Bandırma/Balıkesir/Turkey with an altitude of 58 meters.

4.2 Process DescriptionTincal solution prepared at the dissolving trough unit of the Borax Works is fed to the thickeners for removal of the clay contents. The solution from the thickener’s overflow is filtered in pressure filters, and the filtered clean solution is fed to the crystallizers with a temperature of 90-95°C and cooled down to 45-65°C at the crystallizers to obtainDecahydrate/pentahydrate crystal. Moist crystal is subjected to centrifuging and is fed to the fluid bed driers with a moisture content of 6-7% by weight. The resulting dry product is taken to the silos and prepared for delivery in bulk or in bags.

4.2.1 Characteristics of the Products to be Fed to the Centrifuges:

a) Borax Decahydrate Slurry Characteristics: Product to be fed: Borax Decahydrate Slurry

Na2B4O7.10H2O(solid)+ Na2B4O7.10H2O(solution)

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Solid/Solution Ratio: 40-60% by volumepH : 9.2-9.6 Feeding Temperature: 40-45°C Abrasiveness : Abrasive Specific Weight : 1,72 gr/cm3 (at 20°C ) Solidification Characteristics: The fed slurry solution and the main solution in its contents

have fast cooling and crystallization characteristic. For this reason, main solution discharge line must have a perpendicular angle so as to leave the centrifuge rapidly after solid-fluid phase separation. A sealed hatch should be provided over the main solution discharge line for cleaning with hot water when necessary..

b) Borax Pentahydrate Slurry Characteristics: Product to be fed: Borax Pentahydrate Slurry

Na2B4O7.5H2O(solid)+ Na2B4O7.10H2O(solution) Solid/Solution Ratio: 40-60% by volumepH : 9.2-9.6 Feeding Temperature: 60-65°C Abrasiveness : Abrasive Specific Weight : 1,81 gr/cm3 (at 20°C ) Solidification Characteristics: The fed slurry solution and the main solution in its contents

have fast cooling and crystallization characteristic. For this reason, the main solution discharge line shall be structured in a way to provide removal from the centrifuge rapidly after the solid-liquid phase separation with a vertical angle to the possible extent. A sealed hatch should be provided over the main solution discharge line for cleaning with hot water when necessary.

4.3 Auxiliary Units:

Steam : 6 bars, 185-220 °C (superheated steam) Electricity : 220/380 V, 50 Hz, 3 phases Instrument Air: 6 bar dry air Hot water : 4-5 bar pressure, 80-90 °C Cold water : 4-5 bars, Soft Water and Raw Water

5. WORK COMMENCEMENT DATE, DELIVERY TERM, DELIVERY PLACE AND CONDITIONS

5.1 Work commencement date:5.1.1. Inland: Work will be started upon signing of the contract.5.1.2.Abroad: The work commencement date will be the signing date of the Contract/Order. 5.2 Delivery period: In inland deliveries, the Pusher Type Centrifuges will be delivered to Bandırma Boron and Acid

Works within a maximum period of 180 (hundred and eighty) calendar days as of the work commencement date. This period does not include the assembly, startup and performance test periods.

In deliveries from abroad, the Pusher Type Centrifuges will be delivered within a maximum period of 180 (hundred and eighty) calendar days as of the work commencement date. Delivery term of the centrifuges will be on CPT/CFR Istanbul basis. The loading date of the centrifuges will be the delivery date. This period does not include the assembly, startup and performance test periods.

5.3 Delivery Place and Conditions5.3.1 Inland: The centrifuges will be delivered to Bandırma Born and Acid Works warehouse/site in

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a single party. All costs related with transportation and insurance will be borne by the Contractor.

5.3.2 Abroad: Delivery of the centrifuges will be on CPT/CFR Istanbul basis. Centrifuges will be delivered in a single party.

5.4 Battery Limit. Centrifuge systems will cover all equipment, accessories, pipes and fittings, valves, connection flanges and electrical equipment and instrumentation starting from the input pipe of the centrifuge and ending at the flange of the output pipe, and all of these works will be under the responsibility of the Contractor.

5.5 Entity’s Responsibility: In inland purchases, the centrifuges send by the Contractor to our Plant will be unloaded to

the Plant’s warehouse by the Entity. In purchases from abroad, delivery of the centrifuges, which will be shipped on CPT /

CFR Istanbul basis, to the Plant and unloading will be under the responsibility of the Entity.

Installation and piping of the centrifuges will be realized by the Entity based on the detailed designs sent by the Contractor.

5.6 Contractor’s Responsibility: Contractor will be responsible for protection of the subject goods of the contract until

delivery to the Entity. Contractor will provide the designs and information necessary for timely delivery and

assembly of the centrifuges and goods in conformity with the program of this work. Date and details of the shipment will be notified to the Entity 30 days in advance. All expenditures (transportation, food, accommodation etc.) of the supervisors inland

and abroad will be covered by the CONTRACTOR.

6. REQUIRED DOCUMENTS, INFORMATION AND SAMPLE:6.1 Documents and Information to be Presented with the Bid:

BIDDERS will present a bid that describes the construction, material and operation of the centrifuges in detail. Moreover, the following information will be provided clearly for each centrifuge. Accordingly;

Crystal output, amount per centrifuge and moisture Basket diameter Minimum and maximum feeding flow Minimum and maximum number of basket rotations Centrifugal force and Static and Dynamic Loads Maximum push distance and frequency (approximate) Flow Diagram, Process description together with the P&I Diagram, Weight, dimension and general layout designs of centrifuges System offered by the bidder and applied at the centrifuge to prevent grain size breaking, Installed and consumption power amount required for each centrifuge, Unit energy

consumption (kWh/ton), Detailed and classified list of materials for the machinery-equipment, site instruments and

the electric-automation system to be supplied in the battery limit (including make, type, origin, technical information and standards related with the materials)

BIDDER will present the program foreseen for the supervision services in his bid. Decanter centrifuges of the type and capacity offered by the Seller must have been tested

successfully in the boron industry and/or used in production. Seller shall present a reference list, showing the types and capacities of the machines used in the boron industry and test certificates evidencing successful completion of the tests carried out. Bids of firms who do not present said reference list or successful test completion certificates shall not be taken into evaluation.

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Bidder must have an ISO 9001:2008 Quality Management System certificate and must include these certificates to the bid.

6.2 Documents and Information to be presented after Placement of the Order:The designs and documents specified in the following articles that shall cover the input-output (solid/fluid) connection flanges for preparation of the layout and assembly designs of the centrifuges will be presented no later than 30 calendar days as of order placement and other designs and documents will be presented at the time of delivery of centrifuges. Detailed process flow diagram Detailed P&I Diagram Detailed Mechanical-Electrical - Automation Designs, list of cables necessary for

installation Detailed Construction Designs, Foundation and Load Drawings, frame anchorage details Detailed Layout and installation drawings

6.3 Documents and Information to be presented in the Delivery Scope:The following documents will be delivered with the equipment in the event of a local contractor. Said documents will be sent directly to the Plant Management after shipment in the event of the Contractor being a foreign firm. Final installation and detailed designs (Mechanical, Electrical, Instrumentation) (1 set

printout + 3 sets on DVD/CD) Contractor will specify the apparatus and instrumentation devices necessary for the

assembly and disassembly of the centrifuges and supply these free of charge at delivery. Shipping package dimensions, volume, weight Characteristics of oil necessary for pusher mechanism Catalogs and detailed information regarding each device, equipment used Equipment pos. no. and part codes for ordering Power and control designs (Electrical, electronic, pneumatic) Electrical Panels (cubic) dimensions and weights and power supply cable cross-

sections/dimensions are to be provided, Documentation of the Process Control System PLC program (backup), licenses and

passwords for the licensed software required for communication with the PLC must be delivered.

Electric-electronic pneumatic open circuit design and list of materials for the centrifuge system, software backups for all software used in the system for re-installation and software hardware and documents will be provided with their licenses.

Operation and Maintenance Instructions will be delivered in Turkish and all other documents will be delivered either in Turkish and/or English. Each document will be presented in 1 hardcopy and 3 sets in electronic format (on CD/DVD etc.).

7. BID AND PAYMENT CONDITIONS:7.1 Bid and Payment Conditions:7.1.1 Inland: Bids will be presented in Turkish Liras (TL) or in a foreign currency.7.1.2 Abroad: Bids will be presented in USD/EURO.

Bid prices are fixed and inland freight, packaging etc. costs in the country of the Bidder will be included into the price and no price difference will be paid. Payment Conditions:

Advance payment will be paid at a rate of 25% of the contract price against the letter of guarantee for advance payment.

Machine-equipment price payment; in inland deliveries 50% of the total contract price will be paid against letter of guarantee for advance payment upon delivery of the centrifuges to the Plant Management, and the balance 25% will be paid upon successful completion of the

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performance tests. In deliveries from abroad, payment will be realized at a rate of 75% of the contract price against

100% shipping documents through a confirmed/non-confirmed, revocable/irrevocable letter of credit. Following delivery, 50% of the total order amount will be paid upon presentation of the shipping documents and balance 25% will be paid upon successful completion of the performance tests.

Payment will be made to the Contractor on the basis of the contract price as follows:

Advance payment : 25% Upon delivery of the machine-equipment : 50 % Upon successful completion of the performance tests: : 25%

Total: 100%

In purchases from inland, 25% of the Advance Guarantee will be released upon delivery of all Machinery-Equipment to the Plant and 50% of the Advance Guarantee will be released upon the Performance Tests.

7.2 Partial Bids: Bids will be presented for the complete work and partial bids will not be accepted.

7.3 Advance Payment: An advance payment will be made to the Contractor at a rate of 25 of the contract price against letter of guarantee upon signing of the contract.

7.4 Performance Guarantee: Performance guarantee will not be required. The balance will be withheld at a rate of 25% of the contract price as performance guarantee

and an acceptance protocol will be issued upon successful completion of the performance tests and the balance 25% will be paid.

7.5 Elements other than Price: Elements other than price will not be taken into consideration in the bids.

8. INSTALLATION, TEST, STARTUP AND PERFORMANCE TESTS8.1 Assembly Works:

Assembly of the centrifuges shall be realized by the ENTITY. Special parts and tools of the centrifuge and its equipment in the scope of the battery limit will

be provided by the Contractor. ENTITY will realize the general layout of the centrifuges according to the designs to be

provided by the CONTRACTOR, and the CONTRACTOR will carry out assembly control. Coding related with assembly will be provided on the parts and will be specified clearly on the

designs. CONTRACTOR will bear all responsibility in the event of faulty assembly of the machinery

and equipment in the delivery scope as a result of missing designs, inefficient design, missing special parts and tools or inefficient information supply to the ENTITY.

Following installation of the centrifuges at their location, the Entity will contact the Contractor in writing and request a supervisor for assembly control.

8.2 Testing and Startup Works: Following assembly of the centrifuges, the ENTITY shall communicate with the

CONTRACTOR in writing and request assembly control and supervision service for tests and startup.

Contractor will send the supervisor to the Plant and commence the works for assembly control and startup within a period of maximum 15 days as of the Entity’s request.

In the event of positive completion of the assembly control of the centrifuges, the testing and startup works will be started under the responsibility of the Contractor’s supervisor with the

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supervision and participation of the Entity. Test and trial operation of the centrifuges will be realized with the borax

decahydrate/pentahydrate product. Following positive completion of the testing and startup works, the individual performance

testing of the centrifuges will be started.8.3 Performance Tests:

Following positive completion of the testing and startup works, the Performance tests will be carried out under the Contractor’s responsibility subject to supervision and participation of the Entity.

The period lapsing during performance tests will not be included into the delivery period in either inland or abroad purchases.

Performance tests will be carried out 2 days x 24 hours basis for each centrifuge. Interruptions up to 1 hour will not be taken into consideration during these works and interruptions up to 6 hours will be added to the end of the test. (Said interruptions may occur maximum 2 times during the whole performance test.) In the event of longer interruptions, the testing works will be restarted.

Moisture and capacity measurements will be carried out on samples to be taken 4 times a day during day shifts. Mean value of the laboratory analysis results will be calculated and evaluated.

Moisture analysis will be carried out at the ENTITY’s own laboratory. CONTRACTOR may have the analysis repeated at an independent laboratory with international accreditation, if deemed necessary, with related costs being borne by the CONTRACTOR. In the event conflicting results, the analyses will be repeated at a different independent laboratory with international accreditation. Mean value of the two values in the received outputs will be considered as the final result.

Acceptance of the centrifuges will take place in the event of achievement of the performance values specified in Article 8.4 as a result of the performance tests. Withheld 25% portion of the machinery-equipment contract price will be paid following acceptance.

If the guaranteed performance values cannot be achieved as a result of the Centrifuge Performance tests, the Contractor will be instructed to make the necessary connections in a period of 60 calendar days on his own account and the penalty provisions of the contract will be applied during this period.

If the required performance criteria cannot be achieved in the 60 calendar day period, an additional period of maximum 60 calendar days will be granted subject to fine , in line with the request of the Contractor. If the performance criteria cannot be achieved at the end of the period under fine, the provisions of the contract will be applied.

If the performance tests cannot be carried out within a period of 180 calendar days as of the date of completion of the assembly of the centrifuges due to reasons attributable to the ENTITY, the balance 25% withheld as performance guarantee will be paid.

8.4 Performance Guarantees:Bidders guarantee to fulfill the following performance criteria for the Borax Decahydrate/Pentahydrate product. Performance tests will be carried out with one of the two products:

Capacity : Min. 12 tons /h (per centrifuge solid product output) Centrifuge output product moisture : 6 % (max.) (by weight)

9. ACCEPTANCE PROCESSES:2 centrifuges delivered by the Contractor will be controlled and inspected in the scope of the following conditions.

9.1 This article is left blank.

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9.2 This article is left blank.9.3 Acceptance of the centrifuges will be made on the basis of the performance tests.

Performance test periods will be carried out as specified under article 8.3. Sampling procedure will be carried out as specified under article 8.3.

9.4 The Acceptance and Rejection criteria will be applied as follows with due consideration of article 8.4: Accordingly;

Upon fulfillment of all performance guarantees specified under Article 8.4 and achievement of the performance tests specified in Article 8.3, an acceptance protocol will be signed between the Contractor and the Plant Management and the Acceptance of the centrifuges will be realized.

Partial completion will not be applied. Last payment will be realized after acceptance of both centrifuges.

In the event of failure in fulfillment of any of the performance guarantees specified under Article 8.4, the centrifuges will be rejected.

Warranty period will start after the acceptance and any inefficiency caused by faults attributable to the Contractor during the warranty period will be remedied free of charge by the Contractor.

10. WARRANTY10.1. Material/Machine-Equipment Warranty:

Centrifuges will be under warranty for a period 2 years (24 months) as of the acceptance date. Contractor will guarantee that all equipment in the scope of the centrifuges are newly produced,

unused and in conformity with the specifications set forth in the technical specifications. Contractor will guarantee to remedy all defects caused by the design of the goods, material,

workmanship or Contractor’s own fault, free of charge. All kinds of renewal, repair, addition etc. process carried out on the centrifuges to achieve the

guaranteed values will be under the Contractor’s scope. The periods required for these works will be added to the warranty period.

The Plant will notify the rights extending from warranty promptly. Following receipt of this notification, the Contractor will repair or replace the defected goods or parts and deliver these to final delivery point, free of charge (with all costs borne by the Contractor) in a reasonable period to be set mutually.

In the event of missing delivery or erroneous shipment of the good, the Contractor will send the goods to the Plant Management free of charge and with all costs to his name and account.

Contractor will provide a spare part supply guarantee against charge for a period of 10 years for all machinery, equipment and devices that are supplied and all hardware and software related with these (as of the final acceptance of the machines, equipment and devices).

11. FINES:11.1 Inland:

In the event of failure in delivery of the centrifuges in the specified period in conformity with the contract, the fine specified in the contract will be applied for each calendar day of delay. If the Contractor cannot handover the work in the specified period, the provisions of the contract will be applied.

In the event of the Contractor failing to achieve the guaranteed values in the performance tests, the Contracting Entity will grant an additional period subject to a fine of 0.05% (one per ten thousand) of the total contact price for every calendar day of delay. Additional time extension will be maximum 120 calendar days. If the Contractor cannot fulfill the commitment during this period, the contract provisions will be applied.

If only one of the centrifuges cannot achieve the values undertaken by the Contractor in the performance tests partial delay fine will be applied. In this case, a fine will be applied at the rate specified in the contract for each day of delay on the basis of 50% of the total contract price

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11.2. Abroad: In the event of failure of the centrifuges in the specified period in conformity with the

contract in purchases from abroad, the fine specified in the contract will be applied for each calendar day of delay.

If the Contractor cannot achieve the guaranteed values in the performance tests in the purchases from abroad, the delay fine specified in the contract will be applied for each calendar day of delay.

If only one of the centrifuges cannot achieve the values undertaken by the Contractor in the performance tests, partial delay fine will be applied. In this case, a fine will be applied at the rate specified in the contract for each day of delay on the basis of 50% of the total contract price.

12. OTHER ISSUES12.1 Training Services:

Maintenance-repair, calibration, programming and project training will be given to the Machine, Electricity-Automation group. This training will be at the level of responding to the system when necessary and making additions or modifications. Said training period will be a total of 12 hours consisting of 4 hours per day for minimum 3 days.

All training services will be included into the bid scope and no additional payments will be made for these.

12.2 Spare Materials for Two Years: Contractor will give provide a list of spare parts needed for 2 (two) years on item basis,

including part codes, delivery periods, quantities and unit prices, and the prices will not be included into the bid price. Entity will be free in its decision to purchase the offered spare parts or to purchase these partially.

12.3 CE Marking The machine shall have the CE marking to evidence conformity to the (EU) standards. Firms

submitting a bid from non-EU countries shall present the certificate of conformity, which stipulates the technical details at (CE) standards, along with the shipping documents.

12.4 Inception Certificate and Exemption: VAT exemption will be applied in the event of the centrifuges being included into investment

incitement scope.

12.5 Packaging: Necessary packaging processes shall be realized to prevent damaging and provide adequate

protection of the centrifuges during loading/shipping, unloading and assembly. All machinery-equipment or external surfaces with threading exposed to atmospheric corrosion

during shipping shall be covered with a suitable covering that can easily be cleaned and that can protect against rust. Flanged nozzles shall be covered with wood and tightened with a bolt. All threaded connections shall be covered with a screw enclosure.

12.6 Occupational Health and Safety All kinds of work and processes required for the plant will be carried out in terms of

Occupational Health and Safety in the scope of the laws and regulations in force (Occupational Safety Regulations, Heavy and Dangerous Works Regulations, Vibration Regulations, Noise Regulations etc.).

Measures required to ensure conformity of the centrifuges to the occupational health and safety rules will be taken. Contractor will be construed as having guaranteed that the equipment to be recommended for this work will operate in conformity with the occupational health and safety rules.

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.

13. ARTICLES OF THE TECHNICAL SPECIFICATIONS

This technical specification consists of 13 (thirteen) articles, including this article.

Technical Specification Prepared by: 31.05.2016

C.Övünç UZUNLAR Mustafa YEŞİL Melike DÖNMEZInvestment-Project-Const. App.

Investment-Project-Const. App.

Engineering Processesand Maintenance and Maintenance Unit Responsible