Part 3 Power plant Volume I.pdf

Khabat Thermal Power Plant Units 1&2 and Bazyan 400kV Substation

EPC/TURNKEYBIDDING PACKAGEBidding No. :

PART 3 Volume I Technical Specification for Power Plant

CONTENTSLIST OF ABBREVIATIONS VOLUME I 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. TECHNICAL SPECIFICATION

PROJECT DESCRIPTION PLANT DESIGN CRITERIA SCOPE OF WORK GENERAL REQUIREMENTS SITE DETAILS AND SAFETY REQUIREMENTS MECHANICAL PLANT AND SYSTEMS ELECTRICAL CONTROL, INSTRUMENTATION AND COMMUNICATIONS CIVIL WORKS QUALITY CONTROL, INSPECTION AND TESTING COMMISSIONING, START-UP AND TESTING

VOLUME II A. B. C1. C2. C3. C4. D.

SCHEDULES

Site Particulars Dates of Despatch, Delivery to Site and Completion Manufacturers Guarantee Particulars Mechanical Schedules Electrical Schedules Control and Instrumentation Schedules Suppliers of Materials, Manufacturers, Places of Manufacture Testing and Inspection E. Drawings and Documentation F. Variations from Specification G1. General Tests and Inspections G2. Tests in Manufacturers Works G3. Site Tests H. List of Spare Parts and Consumables J. List of Special Tools and Equipment VOLUME III APPENDICES 1. PLOT PLAN 2. GENERAL ARRANGEMENT 3. SYSBOL & LEGEND 4. FLOW DIAGRAM 5. SINGLE LINE DIAGRAM 6. CONTROL SYSTEM CONFIGURATION DRAWING 7. BASIC PLANT OPERATION SCHEME ON PCS

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LIST OF ABBREVIATIONS% C A ac AFFF AGI AGMA ANSI API ASME ASTM AVR AWS AWWA barg BCSA BMS BoP BS C&I C/H CCCW CCGT CCR CCTV CCW CD CD Rom CEMS CFD CO CPU Cr CT per cent degrees Celsius ampere alternating current aqueous film forming foam above ground installation American Gear Manufacturers Association American National Standards Institute American Petroleum Institute American Society of Mechanical Engineers American Society for Testing of Materials automatic voltage regulator American Welding Society American Water Works Association bar gauge British Construction Steelwork Association Building Management System balance of plant British Standards control and instrumentation (C/H ratio) closed circuit cooling water combined cycle gas turbine central control room closed circuit television closed cooling water compact disc compact disc read-only memory continuous emissions monitoring system Computational Fluid Dynamics carbon monoxide central processor unit chromium current transformer

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CV CV CW dB dB(A) dc DEH demin DFR DGP DLT EHV EMC EN EPA EPC EPR EWS FAT FCAW FD FGD FM GMAW GMT GPS GRP GSC GT GTAW H&S HAZID HAZOP HCFC HEI HMI

flow coefficient curriculum vitae circulating water decibel decibel (A weighted) direct current digital electro-hydraulic demineralization design flow rate data gathering panels digital linear type extra high voltage electromagnetic compatibility Euro Norme Environment Public Authority engineer, procure, construct ethylene propylene rubber engineers workstation Factory Acceptance Test flux-cored arc welding Fire Department flue gas desulphurization

gas metal arc welding Greenwich mean time global positioning system glass reinforced plastic gland steam condenser gas turbine gas tungsten arc welding health and safety hazard identification hazard and operability single hydrochlorofluorocarbon compound Heat Exchange Institute human machine interface

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HP HRSG HV HVAC Hz I/O I/P IBC IBM IEC IEEE IP IP IPB ISDN ISO kg KKS km kN kV kW LAeq

high pressure heat recovery steam generator high voltage heating ventilation and air-conditioning hertz input/output input intermediate bulk containers International Business Machines International Electrotechnical Commission Institute of Electrical and Electronics Engineers intermediate pressure International Protection isolated phase busbar integrated service digital network International Standards Organisation kilogram Kraftwerk Kennzeichen System kilometre kiloNewtons kilovolt kilowatt equivalent steady sound level in dB (a) containing the same acoustic energy as the actual fluctuating sound level over a given period

LAN lb LCV LP LSF lub LV m m m/s m2

local area network pound lower calorific value low pressure low smoke and fume lubrication low voltage metre metre metres per second metres squared

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m3 mA mb MCB MCC MCC MCR MED mg mg/l MI MIG mm mm2 MMA MOV MPI MSS MTBF MTTR MV MVA MVAr MVArh MW MWe MWh NB NDE NDT NFPA Nm3 NOx NPHR NPO NPSH

metres cubed milliampere millibar miniature circuit breaker motor control centre motor control centre maximum continuous rating multiple effect distillation milligram milligram per litre mineral insulated metal inert gas millimetre millimetre squared manual metal arc Motor Operated Valve Magnetic Particle Inspection Manufacturers Standard Society mean time between failure mean time to repair medium voltage megavolt ampere megavolt-ampere reactive megavolt-ampere hours megawatt megawatts electrical megawatt-hour nominal bore non-destructive examination non-destructive testing National Fire Protection Agency normal metres cubed oxides of nitrogen net plant heat rate net power output net positive suction head

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O&M O/P O2 OCGT ONAF ONAN P&ID PA PABX PCS PD pH PLC PN ppm PSS PSTN PTFE PTZ PVC QC QCC QCR RH rms rpm RSO RTD SAW SCADA SF6 SFC SMACNA

operation and maintenance output oxygen open cycle gas turbine oil natural air forced oil natural air natural piping and instrumentation diagram public address private automatic branch exchange plant control system Pressure Directive index of acid concentration programmable logic controller nominal pressure parts per million power system stabilizer public switched telephone network polytetrafluoroethylene pan-tilt-zoom polyvinyl chloride Quality Control Quality Control Certificate Quality Control Record relative humidity root mean square revolutions per minute recurrent surge oscillogram resistance thermometer detector submerged arc welding Supervisory Control and Data Acquisition sulphur hexafluoride static frequency converter Sheet Metal and Air Conditioning Contractor National Association

SMAW SO2

shielded metal arc welding sulphur dioxide

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SOE SPN ST TEMA TEWAC TIG TPN TV UHF ULSS UPS UV V VCR VDE

sequence of events single phase neutral steam turbine Tubular Exchanger Manufacturers Association totally enclosed water cooled tungsten inert gas three phase neutral television ultra high frequency stainless steel uninterruptible power supply ultra violet volt video cassette recorder Verband Der Elektrotechnik Elektronik Informationstechnik e.V

VDU VOC VT VWO WB WHO WTP XLPE

visual display unit volatile organic compounds voltage transformer valve wide open World Bank World Health Organization water treatment plant cross linked polyethylene

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VOLUME I

TECHNICAL SPECIFICATIONI

1. PROJECT DESCRIPTION 1.1 1.2 1.3 General Site Description Target Project Start and Completion

2. PLANT DESIGN CRITERIA 2.1 2.2 2.3 2.4 General Unit Rating Site Layout Plant Operating Philosophy 2.4.1 2.4.2 2.4.3 2.4.4 2.5 2.6 Condition of Service Site Conditions Fuel/Water Supplies Grid Conditions

Seismic Design Performance Criteria 2.6.1 2.6.2 Output and Heat rate Plant Start -Up

2.7

Environmental criteria 2.7.1 2.7.2 2.7.3 2.7.4 2.7.5 Noise Emissions to Air

Ambient Air QualityAqueous Emissions Visual Impact

3. SCOPE OF WORK 3.1 3.2 Summary of Main Scope and Services Terminal Points 3.2.1 3.2.2 3.2.3 3.2.4 3.2.5 3.2.6 3.2.7 Fuel Supplies Water Supplies Cooling Water System Electrical Connections Communications Drainage Security Fencing and Access Roads

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4. GENERAL REQUIREMENTS 4.1 Project Management 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.1.7 4.1.8 4.1.9 4.2 Overall Scope Organization Operation of Computer system for project management Project Management Plan Health, Safety and Environmental Management Plan Environmental Protection Project Quality Plan Training Plan for MOE personnel Project Control Procedures

Programs and Progress 4.2.1 4.2.2 Program Requirements Progress Reporting

4.3 4.4

Design and Standardization Drawings and Documents 4.4.1 4.4.2 4.4.3 4.4.4 4.4.5 4.4.6 4.4.7 4.4.8 Drawings Enclosed with the Specification Schedules Drawings and documents to be submitted by the Tender Drawings and documents to be submitted by the Bidder Drawings and document format Drawing sheet numbers Drawing and document revision Drawing and document status

4.5 4.6 4.7 4.8 4.9

Operating and maintenance instructions HAZOP studies Places of manufacture, testing and inspection Packing and marking on packages Training 4.9.1 4.9.2 General Content of training

4.10 4.11 4.12

Spare parts Special tools and lifting devices Warranty engineer

5. SITE DETAILS AND SAFETY REQUIREMENTS 5.1 5.2 5.3 Location of Site, access and use of Site Site facilities Site services during construction period 5.3.1 5.3.2 5.3.3 5.4 Site construction electricity supplies Water supplies Other services

Health and safety at work

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5.4.1 5.4.2 5.4.3 5.4.4 5.4.5 5.4.6 5.4.7 5.4.8 5.4.9 5.4.10 5.4.11 5.4.12 5.4.13 5.4.14 5.4.15 5.4.16 5.4.17 5.4.18 5.4.19 6.

Risk assessment Specific risks produced by Bidder activities Documents Bidder 's safe systems of working Training Safety equipment Assistance to Owner Confined spaces Land owned by third parties Temporary electricity supply Fire precautions Compressed gases Access, fencing and safety barriers Site rules First aid and medical facilities Emergency evacuation of the Site Safety management Cranes, hoists, lifting equipment and scaffolds, etc Electrical safety conditions

MECHANICAL PLANT AND SYSTEMS 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 6.11 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 6.21 6.22 6.23 6.24 6.25 6.26 6.27 6.28 6.29 6.30 6.31 Boiler and its accessories Fuel Supply and Storage System Electrostatic Precipitator Ash Handling System Turbine Generator and Accessaries Condensate System Feedwater System Main and Reheat System Feedwater Heater, Extraction , Drain and Vent System Auxiliary Steam System Closed Cooling Water System Circulating Water System Compressed Air System Water Supply and Treatment System Chemical Feed and Sampling System Auxiliary Boiler Diesel Generators Service Gas System Fire Protection and Detection System Crane and Lifting Equipment Laboratory Equipment Workshop and stores Equipment General Plant Requirements Painting and Protection against Corrosion Packing and marking on packages Flue gas Desulfurization system Waste water treatment system Sewage water treatment system Sump pump Piping Elevators

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7.

ELECTRICAL 7.1 General 7.1.1 7.1.2 7.1.3 7.1.4 7.1.5 7.1.6 7.1.7 7.1.8 7.2 Nominal voltage ratings Electrical equipment enclosure Control and selector switches Switchboards, panels and cubicles Indicating lamps and fittings Panel wiring and terminal boards Current transformers Voltage transformers

Generators 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 7.2.6 7.2.7 7.2.8 General Rating and capability Generator cooling Gas systems Demineralized water system Terminals Sliprings and brushgear Instrumentation and metering

7.3

Excitation system and equipment 7.3.1 7.3.2 7.3.3 7.3.4 7.3.5 7.3.6 Rectifier Excitation transformer Control equipment Field suppression Connections Monitoring and protection

7.4

Generator main connections and neutral earthing 7.4.1 7.4.2 7.4.3 Function Major components Design criteria

7.5

Generator circuit breaker 7.5.1 7.5.2 7.5.3 Function Major components Design criteria

7.6

Transformers 7.6.1 7.6.2 7.6.3 Function Major components Design criteria

7.7

Switchgear 7.7.1 7.7.2 7.7.3 Function Major components Design criteria

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7.8

DC supplies system 7.8.1 7.8.2 7.8.3 Function Major components Design criteria

7.9

Uninterruptible power supply equipment 7.9.1 7.9.2 7.9.3 Function Major components Design criteria

7.10

Electrical control system 7.10.1 General 7.10.2 Design criteria

7.11

Electrical protection 7.11.1 General 7.11.2 Design criteria

7.12 7.13

Synchronizing Motors 7.13.1 General 7.13.2 Design criteria

7.14

Earthing and Lightning Protection 7.14.1 General 7.14.2 Design criteria

7.15

Cabling 7.15.1 7.15.2 7.15.3 7.15.4 7.15.5 7.15.6 7.15.7 7.15.8 7.15.9 7.15.10 7.15.11 General Medium voltage cables Low voltage cables Control and instrumentation cables Optical fiber cables Telephone cables High temperature cables Thermocouple and compensating cables Intrinsically safe cables Mineral insulated cables Cable installation

7.16 7.17 7.18

Cathodic Protection System Variable speed drives Electrical equipment for hazardous areas

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8. CONTROL, INSTRUMENTATION AND COMMUNICATIONS 8.1 8.2 8.3 8.4 8.5 Introduction Scope of supply Objectives Operational philosophy Control and monitoring of plant 8.5.1 8.5.2 8.5.3 8.5.4 Steam generator Steam turbine Generator Auxiliary plant

8.6

Plant control system 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.6.6 General system design Operators facilities Engineers workstation System response times Spare capacity Software

8.7 8.8 8.9 8.10 8.11 8.12 8.13 8.14 8.15 8.16 8.17

Metering Condition monitoring Plant performance monitoring Emissions monitoring Station clock system Load dispatch Fire detection and alarm system Gas detection system Private automatic branch exchange (PABX) Public address system (PA) Closed circuit television, intruder detection and site access control Systems Weather station General requirements 8.19.1 Introduction 8.19.2 Environmental requirements 8.19.3 Hazardous areas

8.18 8.19

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8.19.4 8.19.5 8.19.6 8.19.7 8.19.8 8.19.9 8.19.10 8.19.11 8.19.12 8.19.13 8.19.14 8.19.15 8.19.16 8.19.17 8.19.18 8.19.19 8.19.20 8.19.21 8.19.22 8.19.23 8.19.24 8.19.25

Insulation and isolation Electromagnetic compatibility (EMC) Identification Installation Flow measurements Level measurements Pressure measurements Temperature measurements Position measurements Quality measurements Vibration measurements Control valves and actuators Motorized valves Manual valves Pneumatic actuators/positioners Cubicles and racks Testing Training Documentation Support tools and calibration equipment Spare parts Instrument and electrical test equipment

9. CIVIL WORKS 9.1 General requirements for civil works 9.1.1 9.1.2 9.1.3 9.1.4 9.1.5 9.1.6 9.2 General Civil program and method statements Planning and building permits/approvals Site investigations Ground contamination Design and construction

The site specific data 9.2.1 General

9.3

Scope of civil engineering and building works 9.3.1 9.3.2 9.3.3 General The Bidders enabling works Scope of main civil engineering and building works

9.4

Design of the works 9.4.1 9.4.2 9.4.3 9.4.4 General Preferred structural design concept Materials Civil design parameters

9.5

Specific building and architectural requirements 9.5.1 9.5.2 Cladding and decking Metal doors and frames

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9.5.3 9.5.4 9.5.5 9.5.6 9.5.7 9.5.8 9.5.9 9.5.10 9.5.11 9.5.12 9.6

Internal doors and frames Internal vision panels External walling Internal masonry walling Suspended ceilings Damp proofing Stairs Sanitary ware Finishes Flat roof waterproofing systems (if required)

Materials and workmanship 9.6.1 9.6.2 9.6.3 9.6.4 9.6.5 9.6.6 9.6.7 9.6.8 9.6.9 9.6.10 9.6.11 9.6.12 9.6.13 9.6.14 9.6.15 9.6.16 9.6.17 9.6.18 9.6.19 Codes and Standards Materials Certification of materials Storage of materials Construction plant and equipment Concrete Setting out and monitoring Earthworks Roads, hardstandings, car parks and paths Piling Structural steelwork Surface water drainage and buried pressure pipelines Building drainage Brickwork and blockwork Builders work Access Fencing Landscaping Laydown area

9.7

Electrical building services 9.7.1 9.7.2 9.7.3 9.7.4 9.7.5 9.7.6 Scope of works Lighting systems Small power installation Distribution system Cables and wiring Lightning protection system

9.8

Mechanical building services 9.8.1 9.8.2 9.8.3 9.8.4 9.8.5 Scope of works Design information Quality control Domestic hot and cold water services HVAC systems

9.9 9.10 9.11

Sub-bidders Functional requirements Record drawings

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10. QUALITY CONTROL, INSPECTION AND TESTING

10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8

General Extent of work Document submission Inspection notification and right of access Inspection and tests Non-conformances Quality control records, certificates and certificates of conformance Specific tests and inspections

11. COMMISSIONING, START-UP AND TESTING 11.1 General 11.1.1 Staffing 11.2 Pre-commissioning 11.2.1 11.2.2 11.2.3 11.2.4 11.2.5 11.2.6 11.2.7 11.2.8 11.2.9 11.2.10 11.2.11 11.2.12 11.2.13 11.3 Boiler Turbine Generator Condenser Control and instrumentation installation and pre-commissioning Turbine governing equipment Protective relaying Switchboards, cubicles, relay panels, marshalling boxes, enclosures and ancillary electrical equipment Low voltage switchgear Motors Electrical equipment for hazardous areas 1-30 kV XLPE cable and accessories Auxiliary multicore cables

Commissioning 11.3.1 11.3.2 11.3.3 11.3.4 11.3.5 11.3.6 11.3.7 11.3.8 11.3.9 11.3.10 11.3.11 11.3.12 Oil supply systems Boiler Generator Excitation system Generator main and neutral earthing connections Current transformers Voltage transformers Control and instrumentation installation and Commissioning Turbine governing equipment Turbine Pumps Site acceptance tests

11.4

Testing 11.4.1 11.4.2 11.4.3 11.4.4 Tests on completion Performance guarantee tests Reliability tests Environmental tests

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11.4.5 11.4.6 11.4.7 11.4.8 11.4.9 11.4.10

Reporting of test results Performance worse than guaranteed Rejection of plant Liquidated damages Taking over Defects after taking over

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1 1.1

PROJECT DESCRIPTION General This Specification is intended to assist the Bidder for the design, manufacture, delivery, off-loading at Site, erection, painting, setting to work, testing and attention to defects of the Khabat oil fired power plant units 1&2, to be located in Kurdistan region, which is 30km west of Erbil, Iraq. The station will be constructed on a turnkey basis and shall include all equipment, work and services in order to render the power plant fully complete and functional for safe, reliable and commercial operation under all conditions and respects.

1.2

Site Description The site is in a hilly area in the Khabat District, about 30km west of Erbil, 3.5km north of the village of Khabat, about 1.7km from the Great Zab River. Heavy and large equipment will be unloaded in harbor (if available) and transported through the national highway to site by trailer. Light weight equipment and construction materials can be unloaded on site by truck or trailer. In case that the bridge or underground facility on access way has insufficient strength to bear heavy load, it shall be reinforced for the protection of the existing facilities under Bidders responsibility. The Bidder shall be responsible for surveying all routes and obtaining any necessary permits to ensure that all equipment, particularly oversized and heavy loads, can be transported to their required destination.

1.3

Target Project Start and Completion The Works are expected to commence on April 16, 2010, and the plant shall be complete and ready for Operational Acceptance having successfully completed all the tests on completion as defined in Section 11 by December 31, 2012 for Unit 1 and April 30, 2013 for Unit 2.

1-1 KHABAT TPP UNITS 1&2 - VOLUME I

2 2.1

PLANT DESIGN CRITERIA General This Specification requires a steam generation power plant design that is modern, well proven, safe, and economically attractive both in capital cost and running cost and offering a high availability with low forced outage rate. The plant shall be fully automated and require minimum operator intervention for normal operation. The Bid shall comply with the Specification unless compliance would for any reason put at risk safety, reliability and economy due to deviation from standard practice of the Bid. However, the intent of the Specification shall always be complied with. Any deviations from the Specification shall be clearly identified in Schedule [F], which shall be completed and returned as part of the Bid. The meaning of all terms is as defined in the [EPC Contract Document]. Equipment shall be designed and selected to ensure high reliability and availability of the complete plant with low forced outage rates and minimal maintenance over the lifetime of the power station, which shall be defined as 25 years. An appropriate level of redundancy shall be included in each system; the Works shall be designed so that no single auxiliary plant failure shall result in the total loss of the unit generating capability. In this context, it is required that with agreed exceptions, all unit auxiliaries will be provided with at least one installed spare (N+1). For the station auxiliaries, no single equipment failure shall result in any loss of station generating capability. Prototype plant will not be acceptable, and plant that is offered with limited operating experience must be fully supported by manufacturers warranties and indemnities.


2.2

Plant performance guarantees The Bidder shall meet the followings plant performance guarantees associated with Khabat Thermal Power Plant.

2.2.1

Plant output and heat rate guarantees Description Guaranteed Steam Generation Base load 150,000 < Net plant output [GNPO] (kW) Guaranteed Steam Generation Base Load Net plant heat rate [GNPHR] (kJ/kWh) [based on LHV of the fuel] Net plant output is measured at the tariff meter on the HV side of the main transformers The net plant heat rate is defined as: mf [LHV15 + (tf 15) *cp ] GNPHR = 3600 --------------------------kJ/kWh GNPO where Description average specific heat capacity of fuel in the temperature range Cp= 15C to tf (kJ/kgC) LHV15= mf = tf = lower heating value of fuel at 15C, mass flow of fuel (kg/s) fuel temperature at delivery point (C) 38% < Fuel oil Operation

2.3 2.3.1

Unit Rating Maximum guaranteed rating (MGR) Maximum guaranteed rating is a maximum continuous rating guaranteed by the Bidder. The turbine generator shall be designed for an Net Plant Output 2-2 KHABAT TPP UNITS 1&2 - VOLUME I

no less than 150MW measured at the tariff meter, located on the HV side of the step up transformers. The MGR is based on the following condition ; A. B. C. D. E. F. H. I. J. K. L. Generator terminal output, kW Main steam pressure, kg/cm gage Main steam temperature, Reheat steam temperature, Number of extraction stage Design Wet Bulb temperature, Circulating water temperature rise, Exhaust Pressure, mmHgA Feedwater makeup, % Turbine speed Generator rated power factor, lagging leading M. Generator rated voltage, kV N. Short circuit ratio O. Excitation system response ratio * Note : [ ] value shall be decided by Bidder. 0.85 0.95 [15] not less than 0.5 not less than 1.0 25 [5] [12] [81] 0.0 3,0002

[160,000] 169 538 538 7

G. Approach temperature at cooling tower,

2.3.2

Capability rating (CR) Capability rating is a continuous capable rating at the worst cycle condition. The turbine generator shall be designed for an output not less than that of MGR under the following conditions : A. B. Design Wet Bulb temperature, Feedwater makeup, % shall be the same as MGR conditions. 30 3.0

Other conditions such as steam conditions, design wet bulb temp, etc.


2.3.3

Valve wide open (VWO) Valve Wide Open rating is a maximum continuous rating calculated with all steam control valves wide open. At the inlet, boundary conditions specified in paragraph 2.2.1, the turbine generator shall be designed for an output with no less than 105% main steam flow rate at MGR or no less than main steam flow rate at CR, which is bigger.

2.3.4

Boiler maximum continuous rating (BMCR) Boiler Maximum Continuous Rating is a maximum rating specified and guaranteed by Bidder. It shall be designed on the basis of main steam flow at HP turbine stop valve inlet at VWO plus auxiliary steam flow including minimum 20 % margin.

2.3.5

Maximum continuous rating with top heater out-of-service(MCR & THO) MCR & THO is a maximum continuous rating with top heater out-of-service. At the conditions specified in paragraph 2.2.2, the turbine shall be designed for continuous operation, with an output equal to that of Bidder's MGR at the generator terminals and top heater out of service.

2.4

Site Layout The Bidder shall provide a layout generally in accordance with the conceptual site layout provided in Volume 3, conversant with good operating practice, so that maintenance access is fully available to any part of the plant. The layout shall be based on an outdoor type boiler installation. The site layout, including plant, buildings, roads, gates, laydown areas, etc. shall take into consideration the requirement for heavy vehicles and cranes required for installation and future maintenance of the plant to access to carry out the necessary work. The site layout shall be subject to approval of the KNOC.

2.5

Plant Operating Philosophy The Plant shall be designed for base load and two shifting operation. The intended operating regime for the immediate future will be base load, operating 8000 to 8150 hours per annum equating to a typical annual availability of 91 to 93 per cent. In addition, the plant shall also be capable of operating on a two-shift operating regime, based on one start per day. Plant normal start-up and shutdown will be initiated from the central control 2-4 KHABAT TPP UNITS 1&2 - VOLUME I

room. All the works shall be operated primarily from the PCS in the central control room. The plant shall be automated to reduce the manual intervention required by operations staff. The boilers shall be capable of start-up, shutdown and continuous operation on the fuels as defined in Schedule A, and each block shall have cold and hot start up capability and be able to operate either individually or in parallel with the other blocks. The plant shall be provided with a black start capability. 2.5.1 Condition of Service

2.5.1.1 Operation capability The Boiler and steam turbine-generator shall be capable of ; A. Achieving the peak load of valve wide open rating at rated steam temperatures of 538/538(Turbine) and operate at this overload capacity without any time limitation when as required. B. Start up Time Light off~ Steam to turbine Cold Start Warm Start Hot Start C. When supplied with steam at the temperature stated in the Contract, the load variations at a rate of minimum 10% of MGR per minute between 50% and 100% MGR, and at a rate of minimum 3% of MGR per minute between 30% and 50% MGR. D. E. Operating at no load. Any time limitation, if applicable, shall be stated by the Bidder. Accepting 10% MGR load step change within 10 seconds when the unit is operating in the load range of 50% to 100% MGR. After each occurrence of load step change, the turbine shall enter a stabilizing period for the power plant. 2.5.1.2 Normal operation The steam turbine-generator shall be designed to be operated as follows ; A. Constant pressure operation Steam to Turbine ~ MGR


The main steam pressure remains constant at the rated condition, through all of the operation range, while the load is controlled by either throttling main steam flow with the designed control valve(s). B. Governor Regulating Operation Between 50% and 100% MGR, the load is regulated by governor within 5% instantaneous load variation with response to the network frequency fluctuation. 2.5.1.3 Abnormal operation The steam turbine-generator shall be capable of uninterrupted continuous operation under the following conditions ; A. With circulating water shut off from one section of the condenser. B. When the circulating water flow to condenser is reduced to 1/2 normal flow due to pump limitations. C. With full load when one of high pressure feedwater heaters trips out of service. D. With one Air or Hydrogen cooler out of service at 80% rated capacity. E. At approximately full load with system frequencies between [48.5] and [51.5] Hz. 2.5.2 Site conditions Equipment shall be designed and installed to enable safe and flexible operation of the Works over the entire range of operating modes and conditions as defined in this Specification and shall operate safely and reliably over the full range of site ambient conditions listed in this Specification. The Bidder shall be responsible for sourcing all site meteorological data to facilitate the design of the plant, including such air sampling on site as is necessary to ensure the correct design of the boiler air intake filters. 2.5.3 Fuel/water supplies Indicative analyses of the fuel and water supplies to the plant are provided in Schedule A for information. However, the Bidder is responsible for obtaining sufficient data regarding the fuel/water supply conditions, including analyses as necessary for his design of fuel/water treatment plant and handling/storage facilities, in order to ensure that the required quantity and 2-6 KHABAT TPP UNITS 1&2 - VOLUME I

quality of fuel/water is supplied to the Plant. 2.5.4 Grid conditions The voltage variation on the transmission system will normally remain within the limits stated in Volume 2, Schedule A. The frequency of the transmission system will be nominally 50 Hz, and will normally be controlled within the limits stated in Volume 2, Schedule A. Each generation unit shall have, as a minimum, the following capabilities: operate continuously maintaining its active power pro rata to transmission system frequencies within the range [48.5] Hz to [51.5] Hz; remain synchronized to the transmission system at transmission system frequencies within the range [47.5] Hz to [52] Hz for a duration of [60] minutes; remain synchronized to the transmission system at transmission system frequencies within the range [47] Hz to [47.5] Hz for a duration of [5] seconds required each time the Frequency is below 47.5 Hz; remain synchronized to the transmission system during rate of change of transmission system frequency of values up to and including [0.5] Hz per second; sustained operation at the specified minimum stable generation within the range [49.8] Hz to [51] Hz. For requirements regarding the design of the generators, refer to Section 7.2. 2.6 Seismic Design Iraq is an area of relatively high seismicity and all plant items shall therefore be designed to resist seismic loads. This Project site should be considered to be UBC Zone 3. The United Nations Development Program provides a seismic design code of UBC 97, Zone 3. 2.7 2.7.1 Performance Criteria Output and heat rate 2-7 KHABAT TPP UNITS 1&2 - VOLUME I

The Bidder shall guarantee the corrected net electrical power output (NPO) and corrected net plant heat rate (NPHR) at the base reference conditions as specified in Volume 2, Schedule [C, Part 1], based on the following definitions: Net electrical power output: The net plant output is the total plant net output measured at the tariff meter, located on the HV side of the step up transformers, net of all site auxiliary loads, and transformer losses, corrected to base reference conditions. Net plant heat rate: shall be based on the lower heating value of the fuel and corrected to the base reference conditions The Bidder shall also provide the undernoted curves necessary for correcting power output and specific heat rate from the test conditions to the guarantee base reference conditions in his bid: A. B. C. D. E. F. Variation in ambient temperature Variation in barometric pressure Variation in relative humidity Variation in fuel LCV and C/H ratio Variation in grid frequency Variation in steam temperature and pressure to turbine

2.7.2

Plant start up The Bidder shall guarantee and demonstrate the time for each block to reach full load, and for the steam generator to reach full load from cold, warm and hot starting conditions. Start up curves for the plant shall be provided in the Bid.

2.8

Environmental Criteria The plant shall conform as a minimum with the current World Bank guidelines, the requirements of the local environment authorities in Iraq and with all other relevant consents and regulations.


2.8.1

Noise

2.8.1.1 General The facility shall be designed and constructed such that construction workers and operators are exposed to a minimum level of noise. The Bidder shall take appropriate steps to minimize noise exposure through equipment attenuation and procurement of inherently quieter equipment. All noise limits specified in this document are to be evaluated as LAeq levels. This is the energy weighted average of measured noise level as averaged over a specified time period. All sound levels are expressed in terms of decibels as referenced to a sound pressure level of 20 micropascals. The absolute limit of any measured sound pressure level anywhere in the work area shall not exceed 85 dB(A). In locations where it is necessary for operational attendants to make routine examinations closer than 1 m to an accessible part of a running machine which is between 80 and 85 dB(A), the KNOC will wish to adopt hearing protection aids. Therefore the Bidder is required to draw specific attention to portions of the plant where this situation may be encountered and fix appropriate warning labels or signs. Noise within buildings shall comply with the limits specified in Section 9 Civil. 2.8.1.2 Construction noise The maximum noise level caused by construction noise outside the nearest window of the nearest occupied house shall be: Daytime Evening Night 70 dB(A) 60 dB(A) 40 dB(A).

Noise levels at all time periods during public holidays shall not exceed 40 dB(A). Noise levels shall be limited to 80 dB(A) or lower at a distance of 1 m from all 2-9 KHABAT TPP UNITS 1&2 - VOLUME I

construction equipment and activities to the fullest extent feasible. If a noise level exceeding 85 dB(A) is likely to occur in any area, warning signs shall be predominantly displayed in that area, indicating that a noise hazard exists and hearing protection must be worn. Any area where noise levels could exceed 90 dB(A) shall have controlled access to prevent unprotected personnel from entering the areas. Peak or intermittent noises such as those resulting from pile driving shall occur during daytime periods only and maximum noise levels shall not exceed 70 dB(A) at the nearest inhabited dwelling. 2.8.1.3 Far field noise during operation The Bidder shall identify the location of the nearest residential, institutional or educational location and establish the background noise level. The noise level including background and contribution from the plant during operation shall either (a) raise background noise level by a maximum of not more than 3 dB(A) at the nearest receptor location off-site or (b) not exceed the following limits, consistent with the new updated version of the EHS Guidelines, replacing the Pollution Prevention and Abatement Handbook 1998: One Hour LAeq (dB(A)) Receptor Residential, institutional, educational Industrial, commercial 70 70 Daytime (07:00 to 22:00) 55 Night time (22:00 to 07:00) 45

A noise test procedure shall be submitted by the Bidder, outlining the proposed method of noise testing, to demonstrate compliance with the stated environmental noise limits. The on-site and environmental noise levels shall be assessed by the Bidder in order to comply with the site requirements relating to noise emissions. The noise level shall not exceed 85dB(A) of overall sound pressure level at a distance of one(1) meter from each equipment. And the maximum noise level at the plant boundary shall be maintained below 65dB(A). Parts of the boilers and the steam turbines shall be enclosed in acoustic enclosures to ensure noise limits are achieved. The Bidder shall ensure that


noise emissions are minimized, not only for steam generation plant, but also for the balance of plant equipment. 2.8.2 Emissions to air

2.8.2.1 Emissions during construction The Bidder shall ensure that suitable site practices are employed to ensure that atmospheric dust contamination generated by the construction works do not exceed levels which could constitute a health hazard or nuisance to those persons working on the site or living nearby. 2.8.2.2 Emissions during operation The World Bank has set emission limit for NOx, SO2 and particulate matter from boiler of thermal power plant in July 1998. On April 30, 2007, IFC published new updated versions of the EHS Guidelines, replacing those previously published in the Pollutant Prevention and Abatement Handbook 1998. According to the updated version of the EHS Guidelines for thermal power plants (December 19, 2008), the maximum emission limits for each pollutant of boiler using the liquid fuel are as follows. Parameter Nitrogen oxides * Sulfur dioxide * Particulate matter (Plant > 50MWth to < 600MWth) Continuous monitoring of NOx, SO2, CO, O2 and H2O to correct to dry flue gases shall be made from the main stacks of each boiler and displayed on the PCS. Any exceedances of limit values shall be alarmed. Sampling points and safe access adjacent to the monitoring points shall be included. Any natural gas vent stacks required shall be at a height sufficient to ensure that the concentration of gas at ground level is significantly less than the explosive limit. Emissions of volatile organic compounds from the fuel oil tanks shall be 2-11 KHABAT TPP UNITS 1&2 - VOLUME I Maximum value 400 mg/Nm3 1,500 mg/Nm3 50 mg/Nm3

* The emission limits are referenced to 3% O2, dry flue gas.

limited by installation of appropriate VOC removal plant, such as active carbon filters. 2.8.3 Ambient air quality The World Bank (WB) has set ambient air quality guidelines for nitrogen dioxide (NO2) and SO2. The guide values from the WB are set out below. World bank air quality guide values (micrograms/cubic meter) Parameter Reference period Recommended ground level concentration guide valueShort term exposure (24 hour mean) Nitrogen dioxide Long term exposure (annual average) Short term exposure (24 hour mean) Long term exposure (annual average)

150 100 150 80

Sulfur dioxide

The plant shall not lead to either the airshed dropping into the category of poor air quality or an increase of more than 5 mg/m3 in the annual mean level of particulates and/or SO2 for the entire airshed. For the purposes of bidding, the minimum height for the main stacks shall be considered as 130 meters, however the Bidder shall be responsible for suitable stack design of sufficient height, temperature and velocity to ensure that the above ambient air quality guidelines are not exceeded in combination with all other contributing sources in the vicinity of the proposed plant. The Bidder shall be responsible for the assessment of the existing background air quality through monitoring data, or where none is available through a modeling exercise. 2.8.4 Aqueous emissions The discharge of any effluents during construction, including site drainage, shall be the responsibility of the Bidder who shall reach agreement with the regulatory authorities and the local sewerage authorities with regard to the detailed methods of disposal. Operational aqueous emissions from the plant shall be treated and 2-12 KHABAT TPP UNITS 1&2 - VOLUME I

discharged in accordance with the following quality limits, consistent with the new updated version of the EHS Guidelines, replacing the Pollution Prevention and Abatement Handbook 1998: Effluent guidelines of waste water Parameter pH COD * TSS Oil and grease Total residual chlorine Chromium Copper Iron Zinc Lead Cadmium Mercury Arsenic Temperature increase at the edge of the mixing zone * Not included in the EHS Guidelines Effluent guidelines of sewage water Parameter pH BOD COD Total nitrogen Total phosphorus Oil and grease TSS Total coliform bacteria Maximum, mg/l (except pH and total coliform bacteria) 6 to 9 30 125 10 2 10 50 400 MPN/100ml Maximum, mg/l (except pH and temperature) 6 to 9 20 50 10 0.2 0.5 0.5 1.0 1.0 0.5 0.1 0.005 0.5 3C


Aqueous discharges shall be segregated into storm drains, process effluent and domestic sewage streams. Each shall be provided with an appropriate monitoring and treatment system to ensure that the discharge limits are not exceeded. The waste water originating from the power plant shall be treated by waste water treatment facility before discharge to the river. The water treated with physical and chemical method shall be suitable for the conditions of the effluent guidelines. Any areas of the plant that may be subject to oil spillage shall be drained to an oil interceptor and the clean water discharged with the surface water drainage system. A sewage treatment facility shall be installed for the operational phase, sized for the number of operating and maintenance personnel. All fuel oil lubricating storage tanks and chemical storage tanks shall be bunded to contain 110 per cent of the contents of the largest tank. 2.8.5 Visual impact All reasonable measures shall be taken to minimize visual impact of the plant. Structures and buildings shall meet the standards generally accepted for a facility of this type and shall be in accordance with all applicable local and national consents relating to appearance. Final architectural arrangements shall be submitted for approval to the KNOC.


3 3.1

SCOPE OF WORK Summary of Main Scope and Services This Contract provides for the design, manufacture, construction, supply, testing in works, packaging for export, shipping, transport, delivery to Site, unloading at Site, complete erection, health and safety management, painting, commissioning and putting into operation, performance and reliability testing on completion, instruction of the KNOCs personnel and obligations for the defects liability period of the steam generation power plant. The station shall be constructed on a full design and build, turnkey basis, and it will be the responsibility of the Bidder to ensure that all equipment, scope of work and services are provided in order to render the power plant fully complete and functional for safe, reliable and commercial operation under all conditions and respects. All material, plant and equipment shall be new and fit for the purposes of a steam generation power station. Equipment shall be selected to ensure high reliability and availability of the complete plant with low forced outage rates and minimal maintenance. Permanent, safe access to all items of plant as necessary shall be provided for inspection, operation and maintenance activities. Unless specifically excluded from the scope of work, interconnecting cabling, pipework etc between items of equipment and plant described in this specification shall all be included under this contract, as shall the installation, testing and commissioning of the same. The quantity of equipment shall be based on one (1) unit unless otherwise specified as a common facility. All necessary auxiliary equipment and systems including, but not limited to, the following: Generally, the main supply will include but not be limited to the following (refer to specific sections for further details):


3.2 3.2.1

Mechanical Plant and Systems Boiler and its accessaries A. Boiler proper and accessories

1) Furnace 2) Drum 3) Superheater 4) Reheater 5) Economizer 6) Structural steels 7) The following boiler proper accessories as required ; a) Attemperators b) Soot blowing system c) Two(2) long retractable furnace thermocouple probe assemblies including cooling system complete with electric operators and position transmitters d) Safety valves and power relief valves including one(1) set hydraulic jack with discharge pipe, common silencer, start-up vent with silencer. e) Refractories and brick. f) Casing. g) Buckstay, lugs and clevises and hanger rods. h) Blowdown tank and/or flash tank, miscellaneous tanks. i) HP bypass system and its attemperator system. j) All drain and vent piping. k) Connections for the required blanking off, hydrostatic testing and chemical cleaning including nozzles, double valves and caps. l) Required thermocouples for monitoring drum/tube metal temperatures brought out to, and including a common junction box covering steam drum, superheater and reheater tubes. m) Required measuring device for monitoring the thermal stress and life expenditure of superheater header, reheater header and other boiler pressure parts. n) Necessary furnace observation ports and/or access ports and/or doors for good direct viewing of all the fires, furnace interior, soot


blowing, superheater and reheater, and economizer area and ducting, as well as access as required. o) Remote furnace flame and stack smoke monitoring system including cameras, color monitors and all accessories. p) Drum level monitoring system including electronic level indicators, level and pressure transmitters. B. Draft system 1) Forced draft fans with inlet silencers and drivers. 2) Combined Induced draft fans and drivers. 3) Gas recirculation fans and drivers, if required. 4) Scanner cooling air fans and drivers. 5) Sealing air fans and drivers. 6) Regenerative air preheaters and drivers. 7) Steam coil air heaters, drain tank with accessories. 8) Required air and gas ducts complete with expansion joints, dampers and C. actuators, all necessary auxiliaries and associated instrumentation and controls Fuel burning system 1) Fuel oil burning system with accessories 2) Fuel oil burner atomizing steam system with accessories 3) Light oil burning system with accessories D. Fuel oil supply system 1) In-line service tank suction heater, heavy oil heaters with accessories. 2) Fuel oil supply system including fuel oil burning pumps and motors, flow meter and integrator, accumulator, all required piping, valves and instrumentation. 3) Fuel oil return pipings including flow meter and integrator, all required valves. 4) Light oil supply system including light oil burning pumps and motors, flow meter and integrator, all required piping, valves, actuators and instrumentation. E. The following miscellaneous items ; 1) All required thermal insulation and lagging materials. 2) Complete lubricating oil system and cooling water system, as required.


3) Set of connections, orifice flanges, and all other items, required for the ASME Performance Test. F. 3.2.2 Instrumentation and controls

Fuel oil system Fuel oil supply system shall consist of the following equipment as a common facility for 2 units.

3.2.2.1

Fuel oil supply system A. B. C. D. E. F. Fuel oil booster pumps and motors Fuel oil service pumps complete and motors Clean fuel oil sump pumps and motors Fuel oil storage tanks with its accessaries Fuel oil emergency storage tank with its accessaries Fuel oil in-line suction heaters, fuel oil heaters and fuel oil emergency inline suction heaters G. Heating coil for fuel oil storage tanks and fuel oil emergency tank H. I. Filtering systems Fuel oil supply system including heat tracing, flow meter and integrator, accumulator, all required piping, valves, drains, vents, fittings, and instrumentation etc.

3.2.2.2 Light oil supply system A. B. C. Oil service pumps complete and motors Light oil storage tank with its accessaries Flow meter and integrator, all required piping, valves, actuators and instrumentation 3.2.2.3 Steam converter system A. B. C. D. E. F. Steam converter with accessories Fuel oil heater converter feed tank with accessories Steam converter feed pumps and motors Drain receiver tank with accessories Drain cooler with accessories Blowdown tank with accessories instrumentations

G. Steam converter system including all necessary piping, valves and


3.2.3

Electrostatic precipitator including A. All mechanical equipment, structural components and accessories siding for hopper area enclosure. 2) Precipitator roof including penthouse and handrail around entire precipitator roof. 3) Gas distribution plates or equivalent at the inlet and outlet sides of precipitator. 4) Collecting electrodes and discharge electrodes. 5) Automatic rapping system for collecting and discharge electrodes and for the gas inlet and the outlet distribution devices. 6) Permanent washing system including chemical(NaOH) tank, pumps, nozzles, pipe for drain between precipitator hopper and air lock valve, drain piping, gate valves and fitting, blinded dummy pipe, supports, expansion joints, spectacle flanges, gaskets, bolts, nuts, instruments and controls, etc. 7) Gas flow control devices in the upstream duct of EP inlet nozzle. 8) Access and inspection doors to precipitator shell, hoppers and top housing, hoisting facilities for maintenance on the roof, and access platforms, walkways, handrails, stairs and ladders 9) Support structures for all equipment, platforms, stairs, walkways and enclosure including bottom enclosure. 10) Access platforms and stairways for level switch, aeration pad and vibrator of hopper and air lock valve. B. C. Complete set of electrical, instrumentation and control apparatus and control devices. The following miscellaneous items ; 1) Piping, valves, fittings and pipe support. 2) Drain pipe and gutter for roof drainage. 3) All flanges, gaskets, bolts and nuts including counter flanges for flanged connections. 4) Thermal insulation and lagging. 5) Hoisting facility to handle the equipment from EP roof to ground. 6) Instruments and test connections for conducting performance tests. 7) Dust concentration monitoring system.

1) Ash hoppers with vibrators and heaters on each hopper, and exterior


3.2.4

Ash handling system A. The following ash transport system and accessories ;

1) Transport piping 2) Air intake valves 3) Ash intake valves 4) Line select valves 5) Unit select valves 6) Steam air heaters 7) Seal air fan and drivers 8) Electric heater for seal air fan 9) Non-return valves 10) Hot air select valves B. The following vacuum system and accessories ; 1) Vacuum pumps with drivers, air-water separators, etc for 2 units. 2) Vacuum breakers. 3) Vacuum transmitters. C. The following ash storage silo and accessories for 2units common facilities. 1) Ash storage silo. 2) Aeration air steam heaters. 3) Cyclone separators with air lock valves(upper and lower), valves, etc. 4) Pulse-jet bag filters with air lock valves(upper and lower), equalizing valves, etc. 5) Dust hopper with valves(upper and lower), equalizing valves, etc. D. The following ash discharge devices and accessories for 2units common facilities ; 1) Dry unloaders. 2) Outlet hopper with gate dampers. 3) Rotary unloaders/table feeders. 4) Dustless unloaders. E. F. Complete set of electrical equipment including related control equipment and accessories. All heaters, instruments and accessories. G. All Instrumentation and controls equalizing


3.2.5

Steam turbine/generator and auxiliaries A. B. Tandem compound, single reheat, two(2) flow, regenerating and condensing steam turbine. The following turbine accessories: valves, reheat stop and intercept valves, and steam control valves. All actuators for these valves shall be supplied. 2) Gland steam sealing system including GSC. 3) Exhaust hood spray system. 4) Complete lubricating oil system including purification, storage and transfer, and fire protection. 5) Complete hydraulic and control oil system. 6) Rotor turning gear with manual and automatic engagement, complete with lubrication system and controls. 7) LP bypass system and devices for turbine startup and protection. 8) Complete prewarming system including piping and valve, if required by design. 9) Protective devices such as exhaust casing relief diaphragms, vacuum breaker, low vacuum alarm switches and transmitter, low oil pressure switches for alarm and trip, thrust bearing wear detector, exhaust hood alarm thermostat, and dump valve (blowdown valve). C. The following miscellaneous items: relief valves, root valves for instruments, motorized and control valves hangers and supports for all the systems. 2) HP turbine exhaust non-return valves. 3) Set of connections, orifice flanges, and all other items, required for the ASME Performance Test. 4) All pumps required for equipment. 5) A portable lube oil centrifuge (one common to four(4) units) 6) H2 and CO2 gas bottles, bottles rack and manifolds including connecting tube between manifolds and bottles 7) Drain and vent pipe relation with steam seal including connection with condenser for dump drain and lube oil system. 8) Special thermal insulation and lagging materials for turbine. 9) Embedded material (Fixators) 3-7 KHABAT TPP UNITS 1&2 - VOLUME I 1) Piping and valves including power operated valves, safety valves and 1) Control and protective valve systems including main steam stop

10) Electro-hydraulic control oil for flushing until complete commissioning, initial fill, and two(2) years operation. 11) Lubricating oil and seal oil for flushing until complete commissioning, initial fill. 12) Strainer for EHC and lube oil flushing during commissioning. 13) Steam blowdown cover plate for MSV, CRV and HP turbine exhaust non-return valves. 14) Servo Motor mechanism 15) Special welding rods 3.2.6 Condensate system A. B. C. D. Single shell type condensers Condensate pumps and motors Condenser vacuum pumps and motors, heat exchangers Heaters 1) Low pressure feedwater heaters (No. 1, 2, 3) and external drain cooler for heater No 1 2) The following miscellaneous items : a) b) c) d) e) f) All heater supports including support rails Tube and shell side safety relief valves, and orifices, as specified herein. Orifices including gaskets, bolts and nuts, both flanges for pipe line. A sufficient number of plugs for each tube material and tube size furnished for unit as specified herein. All valves, level gauges, temperature and pressure instruments, thermowells including heater isolation MOV's Connections for gauge glasses, level and pressure instrumentation, and for vents, drains, as required 3) Platform and stairway for the heaters(No. 1, 2, 3 feedwater heater) for inspection and operation 4) Two(2) test samples of tubing of each material, size and thickness supplied. Test pieces shall be 2m in length E. F. Stand pipes for the drain of the HP/LP heater relief valves All associated piping, valves, instrumentation and controls between condenser and inlet deaerator, demi & condensate storage tank, makeup water line to miscellaneous systems, minimum flow recirculation line, condensate rejection line, deaerator level control. 3-8 KHABAT TPP UNITS 1&2 - VOLUME I

3.2.7

Feed water system A. Deaerator and accessories 1) Deaerator including vent condenser with internal spray distribution system and tray banks. 2) Horizontal feedwater storage tank. 3) Connecting downcomers and pressure equalizing pipe between deaerator and feedwater storage tank. 4) Deaerator/feedwater storage tank unit supports. 5) The following miscellaneous items: a) Safety relief valves and orifices b) Feedwater storage tank section with a vortex breaker c) Necessary manholes and access doors d) Pressure relief doors in the tray enclosure e) Platform and stairways around on deaerators/feedwater storage tanks necessary for operation, inspection, maintenance and access f) Screen for pump suction g) Deaerator pressure control valves and level control valves B. Boiler feed water pumps 1) Horizontal, centrifugal, double suction, barrel type boiler feed pumps with electric motors and completed with the following accessories: a) Complete Lube oil systems for each boiler feed pump and motor drive b) Shaft seals with complete external and internal cooling water system for each boiler feed water pump c) Vibration monitoring devices for each boiler feed water pump and motors d) Balance drum leak-off water system including pipe work and the relevant gauges e) Warm-up system including flow restriction orifices, piping and temperature measurements with terminal boxes(E-type, dual) f) Cone type flow measuring elements with all accessories, including root valves for each pump. The services of these elements are minimum flow control, pump protection and feedwater flow control g) Temperature detectors for the each boiler feed pumps and motor drives h) Flexible couplings and coupling guards i) Suction basket strainers including fine elements for start-up, coarse 3-9 KHABAT TPP UNITS 1&2 - VOLUME I

elements for normal operation, pressure differential indicating switches and five(5) way valve manifold for startup and normal operation. A five(5) way valve manifold shall be installed between the sensing lines and PDIT 2) The following miscellaneous items : a) Barrel blanking off plates b) Suction and discharge pressure gauges including root valves, pipes, etc c) Redundant pressure transmitters for pump discharge d) Complete reverse rotation detecting system with sensors and signal condition devices e) Instrumentation for boiler feed water pump C. HP Feedwater Heaters and accessories 1) Complete, 100% capacity, U-tube, high pressure, horizontal closed feedwater heaters with integral drain cooling zone and desuperheating zone for each No. 5, 6, 7 HP feedwater heater. 2) The following miscellaneous items : a) b) c) d) e) f) All heater supports including support rails Tube and shell side safety relief valves, and orifices, as specified herein Orifices including gaskets, bolts and nuts, both flanges for pipe line A sufficient number of plugs for each tube material and tube size furnished for unit as specified herein All valves, level gauges, temperature and pressure instruments, thermowells including heater isolation MOV's Connections for gauge glasses, level and pressure instrumentation, and for vents, drains, as required 3) Platform and stairway for the heaters(No. 5, 6, 7 feedwater heater) for inspection and operation 4) Two(2) test samples of tubing of each material, size and thickness supplied. Test pieces shall be 2m in length D. BFP minimum flow control valves and accessories E. Boiler feedwater control valves and accessories F. Instrumentation and controls for feedwater system G. All required complete piping and valves including hangers, supports for feedwater system 3-10 KHABAT TPP UNITS 1&2 - VOLUME I

3.2.8

Main and reheat system A. Main and reheat steam system is composed with piping and accessories. The main steam system is from the steam generator superheater outlet to the turbine-generator main stop valves. The cold reheat steam system is from turbine exhaust steam to the steam generator reheater inlet. The hot reheat steam system is from the steam generator reheater outlet to the turbine-generator combined reheat valves. B. The following miscellaneous items : 1) Dump drain and vent Automatic valves for operating and maintenance 2) Pressure and temperature instrument such as transmitter, thermowells, thermocouple 3) Blind flanges, special flanges, blanks and spacers for hydrostatic testing, cleaning and system flushing 4) PQR material for field welding 5) Access holes, half couplings and plugs for radiographic inspection of pipe field welds

3.2.9

Feedwater heater extraction, drain and vent system A. MOVs for extraction line B. One(1) non-return valve for each extraction heaters and two(2) non-return valve for deaerator C. Heater cascading and dump drain control valves D. Safety relief valves and blow off stand pipe for the drain of the HP/LP heater relief valves E. Pressure and temperature instruments such as transmitters, thermowells, thermocouples F. Automatized drain valve & piping for exdtraction line G. Instrumentation and controls H. All required complete piping and valves including hangers, supports for feedwater heater extraction, drain and vent system


3.2.10

Auxiliary steam system A. Auxiliary steam headers B. Control valves and desuperheaters for Auxiliary steam C. Instrumentation and controsl

3.2.11

Closed cooling water system A. CCW heat exchangers B. CCW pumps and motors C. CCW header tank with its related pipe work, valves and fill water connection. D. Chemical pot feeders complete with inlet and outlet isolation valves, drain valve, vent valve and charging valve E. Instrumentation and controls F. CCW Sampling system

3.2.12

Circulating water system A. Circulating water pumps B. Cooling tower including blowdown system C. Circulating cooling water pumps D. CW sampling systems E. Condenser tube cleaning system F. All associated piping and valves G. Instrument and cntrols

3.2.13

Compressed air system A. Instrument air system B. Service air system C. Air compressors including intercoolers, aftercoolers, filters, sand seperators. etc D. Capacity Air dryers E. Instument air receivers and service air receivers 3-12 KHABAT TPP UNITS 1&2 - VOLUME I

3.2.14

Water treatment system The following raw water supply system shall consist of the following equipment as a common facilities for 2 units A. Raw supply system and accessories 1) Raw water pumps 2) One(1) 100% Raw water storage tank 3) Intake equipment a) Travelling screen b) Stop gate c) Trash rake d) Screen wash pumps 4) All associated piping, valves, instrumentation and controls B. Raw water system and accessories 1) Cooling tower make-up pumps 2) Raw water transfer pumps 3) Clarifier and agitator 4) Sludge transfer pumps 5) Gravity filters 6) Filter backwash pumps 7) Demi. water supply pumps 8) All internal facilities of clarifier 9) Chemical feed system a) Alum dissolving tank and agitator b) Alum feed tank c) Alum feed pumps d) Caustic mixing tank and agitator with electric heater e) Caustic feed pumps f) Alum aid dissolving tank and agitator with electric heater g) Alum aid feed tank h) Alum aid feed pumps C. The following potable water and service water systems and accessories: 1) Potable water pumps 2) Service water pumps 3) Potable water Hydropneumatic water tank 3-13 KHABAT TPP UNITS 1&2 - VOLUME I

4) Service water Hydropneumatic water tank 5) Sodium hypochlorite feed tank and agitator 6) Sodium hypochlorite feed pumps 7) Activated carbon filters for potable 8) Integrating flow meter D. The following makeup demineralizer systems and accessories: 1) Activated carbon filters 2) Cation exchangers 3) Degasifiers, air blowers and silencers 4) Degasified water transfer pumps 5) Anion exchangers 6) Mixed bed ion exchangers 7) Resin traps 8) Regeneration systems a) Acid day tank with visual indication of tank liquid level and acid injection pumps b) Caustic day tank with visual indication of tank liquid level and caustic injection pumps c) Gas scrubber and mixing tees d) Caustic and acid bulk storage tanks with visual indication of tank liquid level e) Caustic unloading & transfer pumps f) Acid unloading & transfer pumps g) Regeneration water pumps h) Steam water Heater i) j) Electric heaters for caustic storage tanks and day tank Steam traps

E. The following demi. water transfer system and accessories 1) Demi. water make-up pump for 1 unit 2) Demi. water storage tank for 1 unit F. The following FGD make-up water system and accessories G. The followings shall be included in 1) Connections for sampling 2) Design and supply of piping, valves, fittings and pipe supports 3-14 KHABAT TPP UNITS 1&2 - VOLUME I

3) All piping for acid and caustic unloading and transfer 4) Design and supply of support accessories such as sole plates, sub-sole plates, shims, wedges, foundation anchor bolts and nuts 5) Initial charge of media and chemicals for all filters, exchangers and chemical tanks 6) All flanges, gaskets, bolts and nuts including counter flanges for flange connections. 7) Safety showers and eye washers. 8) Instrumentations and controls. 9) Steps, platforms, ladders or stairs for monitoring and maintenance. 10) Lube oil and/or grease for initial charge of rotating elements. 11) All control components such as current to pneumatic converters, air regulators with filters and gauges, impulse piping and fitting, air tubing and bulkheads, instrument box, tube raceway, etc., all instrument installation materials as required 3.2.15 Chemical feed and sampling system A. The following hydrazine injection system and accessories for main system 1) High density hydrazine tank 2) Low density hydrazine tank 3) Hydrazine feed pumps 4) Graduated gauge glass 5) Agitator and low level switch for each tank 6) Hydrazine metering cylinder 7) Air operated dispensing pump B. The following aqua-ammonia injection system and accessories for main system 1) Ammonia feed pumps 2) Ammonia tank 3) Fume scrubber for each tank 4) Graduated gauge glass 5) Agitator and low level switch for ammonia tank 6) Concentrated ammonia metering cylinder 7) Air operated dispensing pump C. The following phosphate injection system and accessories for main system 1) Phosphate tanks with basket strainer 2) Phosphate feed pumps 3-15 KHABAT TPP UNITS 1&2 - VOLUME I

3) Graduated gauge glass for each tank 4) Agitator and low level switch for each tank D. The following sulfuric acid system and accessories for cooling water system 1) Sulfuric acid tanks 2) Sulfuric acid feed pumps 3) Graduated gauge glass for each tank 4) Agitator and low level switch for each tank E. The following sodium hypochlorite system and accessories for cooling water system 1) Sodium hypochlorite tanks 2) Sodium hypochlorite feed pumps 3) Graduated gauge glass for each tank 4) Agitator and low level switch for each tank F. The following inhibiter system and accessories for cooling water system 1) Inhibiter tanks 2) Inhibiter feed pumps 3) Graduated gauge glass for each tank 4) Agitator and low level switch for each tank G. Instrumentation and controls H. All required complete piping and valves including hangers, supports for the chemical feed system 3.2.16 Auxiliary boiler Auxiliary boiler shall be of the following common facility for 2 units A. Auxiliary boiler feedwater pumps with electric motor drivers B. Auxiliary boiler deaerator and storage tank C. Condensate make-up pumps with electric motor drivers D. Light oil feed pumps with electric motor drivers E. Blowdown tank F. Forced draft fan with driver G. Firing system composed of oil burner and windbox, ignitor, scanners, and local panel H. Air duct with air foil type ventrt meter, flue gas outlet breeching and outlet I. Long retractable sootblower and rotary sootblowers installation materials and including instrumentation and control and sample line covering upto insulatio for freeze protection within Bidder scope 3-16 KHABAT TPP UNITS 1&2 - VOLUME I J. All instrumentation, control and safeguards, including control panels and all

K. Flow nozzles and root valves for water analyzing at boiler feed pump discharge, superheater outlet and boiler water L. Insulation of the pipes and equipment and place and steam bracing all feed oil line for freeze protection system within Bidder scope M. Steel stack N. Desuperheater O. Monorail with steel structure fot forced draft fan maintenance 3.2.17 Black start diesel generator including

3.2.17.1Black start diesel generator A. Diesel engine unit B. Combustible air intake system for diesel engine including filter, air cooler C. Exhaust gas system including turbo charger, silencer, expansion joint D. Fuel oil system including pumps, filter(s), day tank, level gage and switches for day tank E. Lubricating oil system including L.O cooler, filters, pumps, preheater, priming L.O pump with one(1) stand-by pump and potable electric L.O pump F. Cooling system including radiator, radiator fans, duct, expansion tank(s), jacket water heater, pump(s) G. Starting air system including air compressor with one(1) stand-by compressor, air receiver H. Small generator sets including cell motor starting device using battery starting I. Generator unit including exciter J. Generator neutral earthing resister cubicle K. Steel structure and support for all tanks L. All required instrumentation and accessories including local instruments, control panel, panel instruments and annunciators including motor starter(if required). M. All required electric equipment and accessories including AVR, synchronizing equipment with auto synchronizer, meters, control switches N. Programmable microprocessor type protection relay. O. Internal cables mounted on equipment 3.2.17.2The following miscellaneous items : A. Design and supply of measuring instruments within the terminal points as described herein 3-17 KHABAT TPP UNITS 1&2 - VOLUME I

B. Design and supply of support accessories such as base plates, shims, wedges, foundation bolts and nuts, grouting material for engine/generator C. All flanges, gaskets, bolts and nuts including counter flanges for flanged connections D. Grease for initial charge E. Consumable parts and/or materials required for storage, installation and startup testing F. Earthing pads with clamps or studs G. Lift lugs for equipment maintenance H. Fire fighting system for fuel oil day tank 3.2.18 Heating, ventilation and air conditioning systems Heating, ventilation and air conditioning systems for the complete plant and buildings, including air handling units, chiller system, split air conditioner(w/ humidifier), supply or exhaust fans, hot water generator and all equipment and accessories relevant HVAC system. 3.2.19 Fire protection and detection Fire protection and detection system shall consist of the following common facility for 2 units. Fire protection and detection systems for the complete plant and buildings, including fire pumps, buried hydrant system, hydrant outlets, sprinkler systems, deluge water spray system, foam/water deluge /spray systems, hose reel and equipment cabinets, portable extinguishers, alarm panels and control system. Electronic/electrical panel room shall be designed by fire protecting gas system 3.2.20 3.2.20.1 Cranes and lifting equipment. Cranes

A. Steam turbine building overhead crane and auxiliary hoist, all necessary equipment and accessories B. Raw water pump house overhead crane and auxiliary hoist, all necessary equipment and accessories C. Workshop crane overhead crane with all necessary equipment and accessories D. Boiler Feed Pumps Underhung cranes with all necessary equipment and accessories E. FGD pump room per unit 3-18 KHABAT TPP UNITS 1&2 - VOLUME I

F. Cooling water pump house overhead crane and auxiliary hoist, all necessary equipment and accessories 3.2.20.2 Hoist

A. Monorail hoist as the common facility for the water/waste water treatment building B. Monorail hoist as the common facility for the air compressor C. Monorail hoist for Emergency Diesel Generator D. Monorail hoists for FD Fan E. Monorail hoist for CID Fan. F. Monorail hoist for Air preheater. G. Monorail hoist for Closed Cooling Water Pump H. Monorail hoist for Sealing Air Fan I. Monorail hoist in absorber area J. Monorail hoist in GGH area K. Monorail hoist for equipment of limestone slurry preparation building L. Monorail hoist for vacuum belt filter, pump and conveyor in gypsum dewatering building M. Monorail hoist for pump and dehydrator in FGD waste water treatment building N. All Monorail hoist shall be including trolley and lifting devices with all necessary accessories. 3.2.20.3 Miscellaneous item Each crane shall be supplied complete with all equipment and accessories necessary for safe, efficient and reliable operation including the following but not limited to, as applicable. A. Crane bridge complete with cross travel rails, walkways and access ladders and stairs to operator's cab and to the walkways along the travel rails. B. The travel rails and their accessories C. Wireless remote pendant. Back up shall be hard wired pendant control. D. Automatic audible alarm, when crane is in operation. E. End stops. F. End carriages. G. Traversing cab incorporating the independently driven hoists and the cab traversing gear H. Maintenance platforms and access ladders, where applicable 3-19 KHABAT TPP UNITS 1&2 - VOLUME I

I.

The main lifting gear complete with ropes and hook fittings fittings

J. The auxiliary lifting gear(where required) complete with ropes and hook K. Slings and shackles 3.2.20.4 Electrical equipment

A. Electrically operated thrust or other type electro-magnetic brakes B. Slip-ring or other type variable speed hoist, long travel and traverse driving motors C. Speed control equipment for motions D. Crane electrical equipment protection panel E. Crane electrical equipment and control cubicles complete with contactors, timers, resistance, rotor acceleration relays, limit switches, cables, wiring, anti-condensation heaters, etc. F. Crane lighting, rood lights, warning lights, plugs and sockets complete 3.2.21 Laboratory equipment Laboratory equipment shall consist of the following common facility for 2 units. Refer to the Vol.1 Technical specification para. 6.21 3.2.22 Services gas system Service gas system shall consist of the following common facility for 2 units. A. Nitrogen Gas Cylinders B. H2 Gas Cylinders, if necessary C. CO2 Gas Cylinders, if necessary D. Pressure Regulators E. All necessary pipework and valves, including insulation, cladding and trace heating (if necessary) for all services. 3.2.23 Workshop equipment Workshop equipment shall consist of the following common facility for 2 units. A. Large Lathe B. Medium Lathe C. Radial Drill Machine D. Flore Drill Machine E. Universal Milling Machine F. Band Sawing Machine G. Metal Cutting Sawing Machine 3-20 KHABAT TPP UNITS 1&2 - VOLUME I

H. 1 x GTAW (200a), 1 x SMAW (150a) 1 x GMAW (300a) welding machines & accessories. Standard tools sets of for all disciplines shall be supplied. (10 Sets for each discipline: welder, elect, inst, mech, controls). 3.2.24 Elevators A. Boiler area B. FGD absorber area 3.2.25 Flue gas desulfurization system A. Absorber system and accessories ; The following equipment shall consist per unit. 1) Absorbers with reaction tank including internal structure 2) Reaction tank agitators and drivers 3) Absorber recirculation pumps and motors 4) Spray headers and internals 5) Spray nozzles 6) Mist eliminators 7) Mist eliminator washing headers and nozzles 8) Gypsum bleed pumps and motors 9) Absorber slurry sump pumps and agitator 10) Density meter pumps and motors with accessories 11) Absorber off-load cleaning system The following equipment shall consist of the common facility for 2 units. 1) Mist eliminator washing water pumps and motors 2) Mist eliminator washing water tank 3) Oxidation air blowers and motors with humidifiers 4) Emergency storage tank with agitator 5) Emergency storage pumps and motors B. Flue gas system and accessories ; The flue gas system shall consist of the following equipment per unit. 1) Gas-gas heater(GGH)s with complete accessories 2) Flue gas ductworks 3) Expansion joints 4) Dampers with drivers and seal air systems 5) Emergency quenching system 6) Purge air fan 3-21 KHABAT TPP UNITS 1&2 - VOLUME I

7) GGH washing water sump agitator & pumps C. Limestone slurry preparation system and accessories The limestone slurry preparation system shall consist of the following equipment as a common facility for 2 units. 1) Limestone powder storage silos with bag filters 2) Screw feeder 3) Limestone solution tanks and agitators 4) Limestone slurry transfer pumps and motors 5) Limestone slurry storage tanks and agitators 6) Limestone slurry feed pumps and motors 7) Limestone slurry preparation area sump pumps and agitator 8) Limestone unloading air compressors with air dryer D. Gypsum dewatering system and accessories The gypsum dewatering system shall consist of the following equipment as a common facility for 2 units. 1) Gypsum dewatering feed tanks with agitators 2) Gypsum dewatering feed pumps and motors 3) 1st stage hydrocyclone 4) Vacuum belt filters with complete accessories 5) Filtrate tanks and agitators 6) Filtrate return pumps & motors 7) 2nd stage hydrocyclone feed pumps and motors 8) 2nd stage hydrocyclone 9) Gypsum dewatering area sump pumps and agitator 10) FGD wastewater blow down tank and agitator 11) FGD wastewater blow down pumps and motors E. FGD waste water treatment system and accessories The FGD waste water treatment system shall consist of the common facility for 2 units. 3.2.26 Waste water treatment system The waste water treatment system shall consist of the following equipment as a common facility for 2 units. A. Normal and abnormal waste water treatment systems and accessories 1) Neutralized water transfer pumps 2) Abnormal waste water pumps 3) Surface aerators for neutralization pond 3-22 KHABAT TPP UNITS 1&2 - VOLUME I

4) Surface aerators for abnormal waste water pond 5) lnternal facilities of clarifier 6) Clarified water pumps 7) Activated carbon filters 8) Filter backwash pumps 9) Sludge pumps 10) Internal facilities of thickener 11) Thickened sludge transfer pumps 12) Dehydrator package with cake hopper 13) Pump room sump pumps 14) Agitator for final pH adjust pond 15) Agitator for thickened sludge storage pond 16) Final disposal channel and accessories 17) Exhaust fan B. Oily waste water treatment system and accessories 1) Pipe skimmer for API oil separator 2) Oil separated water pumps 3) CPI C. Chemical injection system 1) C-Polymer injection tank for dehydrator with dissolving basket, electric heater and agitator 2) C-Polymer injection pumps for dehydrator 3.2.27 Sewage water treatment system The sewage water treatment system shall consist of the following equipment as a common facility for 2 units. A. Sewage water treatment system with accessories B. Final disposal pump C. All associated piping, valves, instrumentation and controls 3.2.28 Sump pump The sump pump shall consist of the following equipment as a common facility for 2 units. A. Sewage water sump pumps 1) Workshop BLDG. sump pumps 2) Administration BLDG. sump pumps 3) Security gate house sump pumps 3-23 KHABAT TPP UNITS 1&2 - VOLUME I

4) FGD control BLDG. sump pumps 5) Operation & maintenance management BLDG. sump pumps 6) Water & waste water treatment BLDG. sump pumps 7) FGD waste water treatment BLDG. sump pumps 8) Unloading entrance gate sump pumps 9) Chiller BLDG. sump pumps 10) Guard tower sump pumps for No. 1, 2, 3 B. Waste water sump pumps 1) Chemical Water Sump Pumps a) b) c) a) b) c) d) e) f) g) h) i) j) k) a) 3.2.29 Unit 1 boiler area sump pumps Unit 2 boiler area sump pumps Chemical storage area sump pumps Unit 1 turbine BLDG. sump pumps Unit 2 turbine BLDG. sump pumps Unit 1 transformer area sump pumps Unit 2 transformer area sump pumps Fuel oil storage tank area sump pumps Fuel & light oil pump house sump pumps Fuel oil emergency tank sump pumps Light oil storage tank area sump pumps Workshop BLDG. sump pumps Emergency diesel BLDG. sump pumps Aux. boiler area sump pumps Raw water intake canal area sump pumps

2) Oily water sump pumps

3) Other sump pumps

Plant design and pipings All required complete piping and valves including hangers, supports for Boiler, turbine-generator and all auxiliary system .

3.3

Electrical Equipment A. Totally enclosed, cylindrical rotor type, 3000 rpm synchronous generator B. Excitation system. C. 132 kV air insulated switchgear For specification of these devices, refer to Part 4 Volume 1 Section 4 D. Generator main connections 3-24 KHABAT TPP UNITS 1&2 - VOLUME I

E. Generator circuit breakers F. Main step up transformers G. Unit aux. transformers H. MV/LV transformers I. Unit and station power supplies, including 6 kV switchgear, LV switchgear, MCCs and building services sub-distribution boards J. DC supply system including batteries and UPS systems K. Electrical control system and protection L. Earthing and lightning protection M. MV and LV power, control and instrumentation, telephone and emergency cabling systems N. Lighting and small power systems O. Cathodic protection system 3.3.1 All Interface devices to SCADA system master station located at the national control centre (NCC) such as follows: Remote terminal unit of SCADA Protection signaling equipment, if req. Microwave radio link equipment Optical Fibre Based PDH/SDH Equipment For specification of these devices, refer to Part 4 Volume 1 Section 10

3.4 3.4.1

Control and Instrumentation Complete control, protection and monitoring systems for the steam turbine generator and auxiliary.

3.4.2

Complete control, protection and monitoring systems for the steam generator and auxiliary.

3.4.3

Control, monitoring and protection systems for the fuel supply and storage system, condensate system, feedwater system, main and reheat system, feedwater heater extraction, drain & vent system auxiliary steam system, closed cooling water system, circulating system , etc.

3.4.4

Control, monitoring and protection systems for the electrostatic precipitator, ash handling system, FGD system, sootblowing system, condenser tyube cleaning system, auxiliary boiler, compressed air system, make-up


demineralizer system, chemical feed system, water & waste water treatment system, chemical dosing system sampling system HVAC, etc. 3.4.5 Control, monitoring and protection systems for the station electrical systems Plant control system 3.4.6 3.4.7 Distributed Digital Control System(DCS) based Plant Control System (PCS) Turbine Control System including Digital electronic governor systems, automatic run-up and loading system, turbine stress evaluator, turbine supervisory system, turbine trip system, generator control and monitoring system, generator gas systems. 3.4.8 PLC(Programmable Logic Controller) based the package control systems including LCD station 3.4.9 Central control room/computer room equipment including operator desks, chairs, printers, large screens, digital indicators, clock, CCTV monitors, furniture, etc. 3.4.10 Emergency shut down systems for safe plant running, shut-down and protection. 3.4.11 Interfaces between the PCS and packaged control systems including TCS via hardwired or redudant communication 3.4.12 Condition monitoring equipment for major plant and auxiliaries. 3.4.13 Plant performance system 3.4.14 Instrumentation with accuracy suitable for tariff metering 3.4.15 Gas and water emissions monitoring equipment 3.4.16 Water and steam sampling equipment 3.4.17 Local instrumentation 3.4.18 Instrument power and air distribution systems 3.4.19 Telecommunications systems 3.4.20 Closed circuit television and perimeter security system 3.4.21 Weather station 3.4.22 Fire and gas detection systems 3.4.23 Public address system 3-26 KHABAT TPP UNITS 1&2 - VOLUME I

3.4.24 Electrical and instrument test equipment 3.4.25 All required control and instrumentation for safe, reliable and efficient operation of the plant. 3.4.26 Others as specified in para. 8 control, instrumentation and communication.

3.5

Civil Works All civil works associated with the above equipment and facilities, including but not limited to:

3.5.1

Geo-technical and topographical surveys of the site, the raw water intake and discharge area including ground pollution report.

3.5.2

Hydraulic model study report and hydrological survey including water level data in consideration of the seasonal changes in Greater Zab River.

3.5.3 3.5.4

Route survey along the raw water pipe and discharge pipe. Data collection including verification of design data provided in the tender documents

3.5.5

Enabling works with regard to existing services, earthworks, dewatering and demolitions

3.5.6

Access roads, site roads, paved hardstanding areas (for car parking, concrete slab laydown areas, gravel covered sterile areas, pathways, street lighting and landscaped areas

3.5.7 3.5.8 3.5.9

Utilities pipework Acoustic attenuation where required to meet noise limits Storm, sewage, oily and plant drainage systems

3.5.10 Utilities and underground services 3.5.11 Security works during construction and operational phases 3.5.12 Permanent Perimeter fence from concrete block wall with additional security camera system and security lighting. 3.5.13 Heavy duty, large rolling type security gate(s) for road access and small personnel access gate. 3.5.14 Hard landscaping 3-27 KHABAT TPP UNITS 1&2 - VOLUME I

3.5.15 Concrete slabs for miscellaneous pipe supports 3.5.16 Exterior & interior equipment support foundation and foundation accessories such as sole plates, counter flanges with bolts, nuts, gaskets, packing, channel base, sub-sole plates, shims, wedges, foundation anchor bolts, anchor frame and nuts, and grout and embedded materials 3.5.17 Piling works and/or ground improvement 3.5.18 Site services, (i.e., power, water, sewage and telephone,etc.) for the Bidder and KNOC office accommodation during the construction period 3.5.19 Building contents (ironmongery, fixtures and fittings, internal finishes, furniture, office computer equipment, fire and safety equipment) 3.5.20 Mechanical and electrical building services 3.5.21 Builders work associated with building services installation 3.5.22 Office accommodation during the construction period for the Bidder, and the KNOC Building works, foundations, structures and associated facilities: 3.5.23 Interfaces with associated contracts 3.5.24 Design, preparation of detailed construction drawings, bar bending schedules and all drawings and documents necessary for completion and maintenance of the works, 3.5.25 Preparation of as-built documentation 3.5.26 Buildings, structures, foundation and compounds to be included as a minimum, in the civil works as follows: Turbine building Central control building Boiler and electrostatic precipitator Stack Absorber foundation Fan foundation Clean & dirty lube oil tank foundation with dike Fuel oil & fuel oil emergency, light oil storage tank foundation and dike Raw water storage tank foundation Demi. water storage tank foundation 3-28 KHABAT TPP UNITS 1&2 - VOLUME I

Ash silo foundation Limestone slurry storage & emergence storage tank foundation Gypsum dewatering feed & filtrate tank foundation Chemical storage tank and pump foundation with dike Transformer foundations and compounds (with fire walls and bund walls) Switch yard area facilities foundation Raw water supply system complete with raw water intake canal and pump house, pump foundation and piping Circulating water system structure complete with cooling tower and cooling water pump station Discharge basin Sewage treatment facilities foundation Waste water treatment facilities foundation with pond Truck scale foundation Parking Pipe rack foundation Play ground Aux boiler house Electrical building Administration building including toilets, small cafeteria Operations & maintenance management building Dining facility building Prayer facility building First aid center with 2 rooms Raw water pump house included electrical facilities Foam tank house Fire brigade station Fuel & light oil pump house Service gas storage house Workshop building Warehouse building Chiller building Water & waste water treatment building Security gate house with 2 rooms Unloading entrance gate house with 2 rooms 3-29 KHABAT TPP UNITS 1&2 - VOLUME I

Sun shades and rain screens Black start/emergency diesel generator building Construction office Gypsum dewatering building Limestone slurry preparation building FGD waste water treatment building FGD pump rooms FGD control building Guard towers with personal amenities Building services, including air conditioning of the local control rooms, central control building, special storage areas, toilets and mess rooms, prayer and cafeteria buildings. Foundations and associated works for: All buildings, structures and compounds listed above Steam turbine generators Transformer compounds Black start/emergency diesel generator Fuel oil storage tanks and handling equipment Service/fire water, potable and demineralized water storage tanks Fire fighting foam equipment Compressed air equipment Miscellaneous plant and equipment Service ways, silos, ducts and trenches, pipe racks and bridges All necessary supports, access ladders, stairways, platforms, walkways, sunshades, handrails, etc., for the safety of personnel during plant operation and ma

Part 3 Power plant Volume I.pdf

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Transcript of Part 3 Power plant Volume I.pdf