2 x 500 MW Anpara ‘C’ Thermal Power Project · transport to site, erection, construction,...

2 x 500 MW Anpara ‘C’ Thermal Power Project

Request for Proposal - Vol. II dated 20th February 2006 1

PART 1

SCOPE OF WORK FOR THE POWER STATION

1. SCOPE FOR THE POWER STATION

1.1 The scope of work for the Power Station shall cover the development, design, engineering, financing, insurance, procurement, manufacturing, factory testing, transport to site, erection, construction, commissioning and performance testing, including Site investigation, Site development and all related civil works, as well as operation and maintenance of the Power Station as provided in the PPA and as broadly described in the following paragraphs.

1.2 The Seller’s (wherein “Seller” is the Project Company formed by the Successful Bidder for the purposes of entering into the RFP Project Documents, executing the Project and carrying out the other responsibilities set forth in the RFQ, this RFP and RFP Project Documents) scope of work shall include all the equipment works and services necessary for the complete, safe and prudent operation and maintenance of the Power Station, as per the requirements of the PPA, even if the same have not been mentioned in this Volume. Provided further, that any equipment/system though not specifically mentioned, but required as per existing rules/law shall be deemed to be included by Seller in his offer and no additional changes shall be admissible for items/equipments which are required to be provided as per laws/statute prevailing at the time of Bid Deadline. Notwithstanding anything contained in any other part of this Volume II, the provisions of this Volume II are guidelines only and the Seller shall ensure that the plant and machineries installed in the Project are not inferior to the specifications laid down in this Volume II.

1.3 The scope of work for the Power Station shall include, but not be limited to, the following:

(a) Preparatory works such as:

(i) Site surveys, including topography, geo-technical, seismic conditions, hydrology and meteorology;

(ii) Soil investigation;

(iii) Site preparation e.g. clearing, backfilling with compaction/consolidation, grading, levelling, earth moving, etc; and

(iv) Site drainage and sewage drainage systems.

(b) Infrastructure works, including:

(i) Construction/extension of access roads/rail tracks at-Site as required;

(ii) Construction of construction water and construction power supply distribution system in the Seller’s area;



(iii) Construction of potable water storage and distribution system, security fencing, parking etc.; and

(iv) Fire-fighting system including fire station and fire tenders;

(c) Construction facilities including:

(i) Temporary labour housing camp;

(ii) Offices, warehouses, workshops for Site construction purposes, vehicles, mobile equipment, temporary power generators, temporary air compressors; and

(iii) Demolition and removal of temporary construction facilities after Commissioning including restoration of surface areas.

(d) Civil works such as:

(i) piling works ( if required ) ;

(ii) general buildings, such as administrative building, workshop, laboratory, storage building, auxiliary buildings and structures, including ventilation and air conditioning facilities of buildings;

(iii) buildings for mechanical and electrical equipment including excavations, foundations, substructures, construction and finishing of the complete building complex, ventilation and air conditioning facilities of buildings;

(iv) roads and surface drainage;

(v) civil works for ash slurry pipelines and ash water recirculation system .

(vi) R.C.C. Stack

(vii) Civil works for the Power Station

- Construction facilities

- Survey & general grading of the areas

- Foundation system including piling

- Structural works both steel and RCC

- Complete architectural works and finishing of all buildings

- Roads, paving, railway siding and bridges

- Drainage system and sewerage system

- Circulating water ducts

(e) Equipments and systems such as:

(i) Steam generators and auxiliaries including,



- Boiler bunker and coal feed systems.

- Coal combustion system including low NOx burners.

- Air and flue gas ductwork.

- Primary air fans.

- Forced draft fans.

- Induced draft fans.

- Coal mills.

- Start up & circulation system, as applicable.

- Air heaters.

- High pressure chemical dosing system.

- Electrostatic precipitator.

(ii) Turbo generators including,

- Steam turbines.

- Condensing plant.

- Complete Regenerative Feed system.

- HP-LP Bypass system.

- Low Pressure Chemical Dosing system.

- Condensate Extraction Pumps.

- Boiler Feed Pumps

Condensate transfer pumps

- Turbine hall E.O.T. cranes.

- Power cycle piping.

- Low pressure piping.

- Plant raw water system.

- Clarifiers for make up to C.W. system, HVAC system etc.



(iii) Circulating water system along with ducting and channels.

(iii) (a) DM water make-up system Clarifiers for make up to C.W. system, HVAC system etc.

(iv) Cooling towers for circulating water system.

(v) Circulating water chlorination system

(vi) Service water system.

(vii) Plant potable water system.

(viii) Boiler fill system

(ix) Condensate polishing unit.

(x) Compressed air system.

(xi) Fire detection and protection system.

(xii) Equipment cooling water system.

(xiii) Effluent water treatment system.

(xiv) Ash water re-circulation system

(xv) Air conditioning and ventilation system

(xvi) Cranes and hoisting equipment.

(xvii) Hydrogen generation plant

(xviii) Elevators

(xix) Mill reject handling system (if required).

(xx) (a) Coal handling plant

(xxi) (b) Merry go round system – modifications in the existing Merry go round system and procurement of rolling stock as required with minimum two diesel locomotives and one hundred and twenty coal wagons each of capacity of sixty tons

(xxii) Ash handling plant with both dry and wet collection system. Dry fly ash storage silos

(xxiii) Secondary Fuel oil unloading and storage system and facilities

(xxiv) House keeping and cleaning system of main plant area



(xxv) Electrical equipments including,

- Main generator and associated equipment

- Transformers

- Bus ducts

- Extra high voltage (765 KV and 400 kV) switchyard in accordance with the minimum identified scope as per the enclosed single line diagrams in Annexure C of this Volume II.

- High, medium and low-voltage switchgear, motor control centres.

- Motors & cables etc.

- DC System, Earthing Cabling and Lightning Protection system.

-Emergency DG Sets

-Control and Protection system etc.

(xxvi) Electrical systems as required for all balance of plant and off-site areas

(xxvii) Control and instrumentation system along with accessories

1.4 All services which are incidental to the above requirements and not related to specific equipment and facilities e.g. management and supervision, engineering, , documentation etc. to be also provided by the Seller.

2.0 INTERFACES AND TERMINAL POINTS

2.1 This section broadly indicates the interfaces and terminal points of the Power Station with the existing facilities.

2.2 The general layout plan drg. no. CW-EN-9357-G-A-001 placed at Annexure C of this Volume II and the ash pipeline corridor drawing no. A-8/89 placed at Annexure C of this Volume II indicate the general area earmarked for construction of the Power Station. The point of access to the Power Station site for the Seller is also indicated in the general layout plan drawing. The Bidder shall provide layout plan (as regards the Technical Bid Form) and the same shall be subject to the approval of UPRVUNL in the event that UPRVUNL facilities or operations are detrimentally affected.

2.3 The earmarked area on the drawings and all such additional areas as may be mutually identified and agreed between Buyer, UPRVUNL and Seller shall be leased to the Seller for construction, operation and maintenance of the Power Station as per the provisions of the Land Lease Agreement. For staff township land shall be provided as per the provisions of Land Lease Agreement.



2.4 For the Power Station to be constructed in the earmarked area of the layout drawings, the Seller shall investigate the specific requirements for interfaces with the existing facilities. Seller shall also check existing capacities and identify the tie- in points. The information being provided herein below shall not relieve the Seller from any of his contractual responsibilities.

2.5 The Seller may use the earmarked areas to optimise construction and installation of new equipments.

2.6 The Seller shall be responsible for the costs resulting from modifications to, or relocation, or removal of existing pipelines, cables, drainage system or any other facilities, which may be present on the plot area. Any modifications or removal of such existing facilities shall be made only with the prior approval of the UPRVUNL, which shall not be unreasonably withheld. On completion of construction works of the Power Station and not later than 3 months after Commercial Operation Date of the Power Station, the Seller shall remove from his campsite and other temporarily used areas all the rubbish, unused materials, storage tanks, temporary power distribution lines and any other temporary facilities. The Seller will be required to fill and dress all holes and cavities made for his convenience and leave all temporary areas in good order and condition.

2.7 It may please be noted that the terminal points identified herein below shall be read in conjunction with the layout drawings, scope of works and technical requirements of various systems.

TERMINAL POINTS

2.8 The terminal points for the Power Station are as set out below:

2.8.01 Raw water system

Existing Intake Channel where provision of stop log gates has been provided for future extension of Anpara – C.

2.8.02 Ash water recirculation system pump house

At the outlet of the overflow lagoon of the existing Ash Dyke of Anpara A and B station. The terminal point shall be finalised with the successful bidder during engineering stage

2.8.03 Treated Liquid Effluents

The Seller shall be permitted to discharge the treated effluents from effluent treatment plant to the existing discharge canal at the terminal point as per the layout finalized by the Seller after detailed engineering.

2.8.04 Ash Slurry Disposal System

Discharge point of ash slurry disposal pipeline in the existing ash dyke at single or multiple points as required.



2.8.05 Coal handling Plant

The battery limits/ terminal points for coal handling plant have been indicated in the layout drawings provided in Annexure C of this Volume II. Within these limits, all equipment and services, civil, structural and architectural works, electrical distribution, piping network etc. as required for coal handling plant will be furnished and erected by the Seller.

2.8.06 Auxiliary Steam System for Start Up

Auxiliary steam header of the existing Anpara A and/or B TPS.

2.8.07 Intentionally Omitted

2.8.08 Construction Water Supply System

Discharge channel of existing Anpara A and B power stations. This shall be made available subject to operation of Anpara ‘A’ and ‘B’ power stations.

2.8.09 Construction Power Supply System

To be arranged by the Seller from the distribution licensee of the area.

2.8.10 Power, control cables & cable erection

i) Terminals of UPRVUNLs’ boards in 400KV switch yard control room and existing Anpara A and B power stations.

2.8.11 Switchyard system terminal points

i) 765 KV line take-off gantries

ii) 400 kV busbars

iv) Terminals of communication/PLCC (power line carrier communication) panels

v) Existing protection and control panels including busbar protection panels wherever interconnection of the Power Station with existing Anpara A and B power stations is envisaged.

2.8.12 Intentionally Omitted

2.8.13 Storm Water Drainage System

Natural drain near north-eastern boundary of existing Anpara A and B power stations.

In coal handling plant, storm water drainage shall be designed by the Seller in such a manner that no liquid waste /storm water from any other area enters the coal handling plant area owned and operated by UPRVUNL.



2.8.14 Excess earth shall be disposed off by Bidder as per requirements of competent local authorities.

INTERFACE REQUIREMENTS

2.9.01 This section describes the interface requirements for the Power Station with the existing Anpara A and B power stations.

2.9.02 The Seller shall have the interface with the existing 400 KV switchyard of the UPRVUNL as per the minimum scope identified in the single line diagrams enclosed at Annexure C of this Volume II.

2.9.03 Subject to the provisions of the PPA, at all the interconnection points with the existing switchyard and the 765 KV Anpara-Unnao transmission line, Main and Check Meters of minimum accuracy class 0.2 shall be provided for measuring exchange of power.

2.9.04 The Seller shall install and maintain all the necessary communication equipment as may be required between the Power Station, Buyer, State Load Despatch Centre and UPPCL at power plant end only. Remote telemetering units (“RTU”) and other equipment as may be required to transmit the data of the Power Station on real time basis including but not limited to the status of equipment and power flows to be transmitted to the Buyer, State Load Despatch Centre and UPPCL shall also be provided by the Seller.

2.9.05 Subject to the provisions of the PPA, State Load Dispatch Centre located at Shakti Bhawan, 14 Ashok Marg, Lucknow and the Buyer shall control and monitor the Dispatch of the Power Station. Seller shall declare the Availability of the Power Station to the SLDC and the Buyer and shall receive the Dispatch instructions from SLDC and Buyer as per procedure to be laid down by SLDC and Buyer in accordance with the provisions of the applicable Grid Code.

2.9.06 Seller shall interact and co-ordinate with UPPCL for interconnection of 765 KV Switchyard with the Grid System. The necessary technical requirements for control, metering, communication and protection of transmission system for the Power Station shall be met by the Seller. Seller shall also co-ordinate with UPPCL for carrying out system and other studies as may be necessary for establishing the 765 KV switchyard.

2.9.07 The Seller shall co-ordinate with UPRVUNL for interconnection requirements of the Sellers 400 kv switchyard augmentation works. Seller shall be responsible for augmentation/modifications in the existing control and protection panels of UPRVUNL for installation and commissioning of his equipment. Seller shall co-ordinate with UPRVUNL for day to day operation of equipments installed by him . The scheduling and duration of shutdowns on existing 400 KV Switchyard busbar(s) and associated equipments for the purposes of interconnection of Seller’s equipments shall be finalised mutually between Seller and UPRVUNL/UPPCL. Any modifications/augmentation works required to be carried out in existing system owned by UPRVUNL shall be performed by the Seller under UPRVUNL supervision.

2.9.08 Within sixty (60) days of the signing of the PPA, UPRVUNL shall identify the interconnection points for the connection of storm water drainage and treated



effluent discharge of the Power Station with the existing storm water drainage and effluent discharge system of Anpara A and B power stations. All other works related to interconnection shall be in the scope of Seller.

2.9.09 Seller is required to construct and maintain a separate entry/exit gate(s) at the identified points in the Power Station Layout Drawings (enclosed at Annexure C of this Volume II) for ensuring independent access to the Power Station during Construction and Operation period. To the extent required, Seller shall be provided right of usage of existing roads, railway siding, walkways, merry-go-round system and other facilities of UPRVUNL within the Power Station area and the area along the ash pipeline corridor and merry-go-round system, during the term of the PPA.

2.9.10 For procuring construction power, UPRVUNL shall provide the necessary cooperation to the Seller for arranging such construction power from the distribution licensee of the area. All expenses towards procurement and consumption of construction, start-up and commissioning power shall be borne exclusively by the Seller. Seller may also make his own back up or contingency arrangements in case the power procured from such distribution licensee is not available or is not considered to be reliable by the Seller.

2.9.11 Measuring arrangements at the drawl point of raw water from the raw water intake channel of Anpara A and B power stations shall be made by the Seller.

2.9.12 Seller shall take due care and precaution at Site to ensure that the existing underground facilities of the UPRVUNL are not affected. As shown in the general plant layout drawings (enclosed in Annexure C), the major facilities of UPRVUNL including 132 KV cables and circulating water intake ducts/discharge channel are falling in the area earmarked for Seller.

2.9.13 Communication and tele-protection equipment for 765 kV Anpara-Unnao transmission line at Anpara end shall be supplied and installed by UPPCL in the Sellers Power Station. The Seller shall extend all necessary co-operation in this regard and earmark suitable space provision in the control room as required by UPPCL for installation of their equipment.

2.9.14 The Seller shall co-ordinate with the Fuel Supplier and UPRVUNL for the smooth operation of his coal rakes on the merry-go-round system as per the provisions of the Facilities and Services Agreement.

2.9.15 The Seller is advised to make his own study at Site to gather further clarity on interface and terminal points and the information provided in this Annexure shall not relieve the Seller of any of his obligations under the any of the RFP Project Documents.



PART -2

TECHNICAL REQUIREMENTS FOR THE POWER STATION

1.0 This part describes the technical requirements which the Seller is required to comply with in general as per good engineering practices for the design, construction, operation and maintenance of the Power Station. These technical requirements are divided into the following heads:

(a) General technical requirements

(b) Requirements for main plant equipment comprising:

i. Mechanical systems

ii. Electrical systems

iii. Civil and structural systems

(a) GENERAL TECHNICAL REQUIREMENTS

1.1 (a) The Seller must design, install, construct, operate and maintain the Power Station so as to ensure that the Power Station is suitable to be run continuously at high Availability Factor with high reliability so as to meet with the requirements of the PPA.

(b) The Power Station shall be designed such that the impact of a failure of any single piece of auxiliary equipment on the output of the Power Station will be minimal and will not cause a failure of the entire Power Station.

1.2 The Power Station shall be designed and operated so that the maximum acceptable air /noise pollution values and water discharges as specified under the statutory clearances and Laws are met at all Site conditions and throughout the term of the PPA.

1.3 The Seller is obliged to use Prudent Utility Practices in preparing the designs of the Power Station. Equipment proposed to be used by the Seller must be new and unused and must be manufactured by manufacturers with sufficient experience of the particular equipments proposed for the Power Station as required in the Technical Equipment Bid Form.

1.4 [Omitted]

1.5 The Power Station shall be designed to permit unconstrained operation over the full range of ambient and other environmental conditions. Further, each Power Station equipment shall be designed to withstand the most extreme ambient conditions to which it may be subjected and to continue to function normally whilst the Power Station is operated at its maximum continuous rating

1.6 The Power Station shall be built to appropriate internationally recognised standards and shall comply with all the applicable statutory and Indian codes.



1.7 The International SI system of units shall be used for design, drawings, diagrams, instruments, etc.

1.8 The design of the Power Station shall meet all requirements of the Grid Code and the State Load Dispatch Centre.

1.9 The control system of the Power Station shall be equipped with automatic power generation control capability (AGC) for automatic and manual regulation of the real and reactive power output of the Power Station in accordance with the requirement of Grid Code.

1.10 The Power Station shall be equipped with the facilities required for such control and all necessary facilities to measure Power Station data and for transmitting such data over communication links between the Power Station and the State Load Dispatch Centre.

1.11 The Power Station shall be able to contribute continuously to the Grid System frequency and voltage control by supplying appropriate active power and reactive power support as per the requirements of the PPA.

1.12 The Power Station shall conform to the applicable technical standards for construction of power stations, electrical lines and connectivity to the Grid System.

1.13 Following a sudden load disconnection from the Grid System, isolated operation of the Power Station shall be required to meet the Power Station’s auxiliary power requirements with a minimum of one (1) Unit in service supplying internal loads, as per the requirements of the PPA.

1.14 To meet the noise level requirements, the Power Station is required to be equipped with standard noise attenuation features. All machinery which exceeds the permissible noise limits shall be equipped with specially designed acoustic enclosures.

1.15 Areas where a potential flammable atmosphere may exist shall be classified in accordance with the provisions of the internationally recognised standard. Suitably certified equipment shall be used in the designated hazardous areas. To the maximum extent practicable, equipment requiring operator attention and/or electrical equipment shall not be installed in hazardous areas.

1.16 The Power Station design shall include suitable security systems such as security fences. Facilities for security personnel such as a guard-house must also be included.

1.17 Seller shall provide, install, maintain, own and operate all necessary coal measurement equipment required for commercial purposes in accordance with the provisions of the PPA.

1.18 The Seller is required to manage the operation and maintenance of the Power Station with the help of computerised information, diagnostic systems, and maintenance and stores inventory systems. Information shall be provided as per the provisions of the PPA on how the organisation and management of the operation and maintenance are supported by:



a. computerised maintenance tools for protective, preventive and corrective maintenance and maintenance tracking; and

b. registration and control of technical process parameters, analysis of the operation conditions and their evaluation.

1.19 The capability of the operation and control system of the Power Station for analysis of the operations data, to provide correlation between them and make the results available for Power Station operation, shall be provided by the Seller. This system shall not limited to registration of data, but shall comprise functions for assessment and interpretation of operating conditions.

1.20 The Seller shall ensure that the engineering, design, construction, and testing of all equipment, facilities, components and systems which they propose should form part of the Power Station shall be in accordance with internationally recognised standards and codes in their latest edition.

1.21 The standards to be followed for the Power Station shall be in the following order of precedence:

a) Indian standards issued by Bureau of Indian Standards

b) The standards and recommendations of the International Standards Organisation (ISO) and the International Electrotechnical Commission (IEC); and

c) National standards and codes which are accepted internationally and are equivalent or superior to Indian Standard Codes.

1.22 The Power Station shall comply with the emission and discharge norms as applicable under the statutory acts and permissions granted for the Project. The major environment related laws in India include but are not limited to the following;

i) The Water Prevention and Control of Pollution Act

ii) The Air Prevention and Control of Pollution Act.

iii) The Environmental Protection Act.

iv) The Public Liability Insurance Act

v) The Forest Conservation Act

vi) The Wildlife Protection Act, and

vii) The EIA Notification, 1994

(b) MAIN PLANT EQUIPMENT REQUIREMENTS

(i) Mechanical Systems



1.30 The brief technical particulars of the major mechanical equipments as envisaged for the Power Station are as per following details;

1.31 The Power Station should be designed to operate as a station with a high Availability and reliability. However, the Power Station shall also be capable of continuous operation under two shift and cyclic modes during certain periods of year, as per the requirements of the Buyer. The design shall cover adequate provision for quick start-up and loading of the Power Station to full load at a fast rate (as per the requirements of the PPA) and apart from constant pressure operation would also have the facility for sliding pressure operation. The main plant and its auxiliaries with their own controls would be designed to permit operation of the Units on house load without there being any necessity to shut down the Units in the event of sudden loss of load due to tripping of transmission lines or any other Grid System disturbances. The design of the plant equipments and control system would permit participation of the Power Station in automatic load frequency control.

The major operating capabilities for the Unit (s) of the Power Station shall be as follows:

a. Unit capacity under VWO ( Valve Wide Open) conditions with rated steam parameters, condenser pressure of 76 mm Hg (abs) and 3% make up shall be minimum 5% more than Economic Maximum Continuous Rating (EMCR) capacity. Boiler MCR flow shall be minimum 1.02 times the VWO flow (EMCR capacity is the offered capacity in MW measured at Generator terminals under design steam conditions with cycle make up of 3% of throttle steam flow and design back pressure. Static excitation power requirements (if applicable) shall also be added to the offered capacity to arrive at EMCR capacity.)

b. Sliding pressure operation from rated pressure down to 40% of rated pressure with as well as without any throttle reserve. The throttle reserve shall be adjustable to minimum 0% for pure sliding pressure mode of operation.

c. Operate continuously with HP heaters out of service with maximum cooling water temp, 3% make up and normal auxiliary steam requirement being tapped from cold reheat line, to generate maximum output without over stressing turbine components. The power output of the Unit/Power Station under this operating condition shall be commensurate with specified boiler capacity. Output under specified conditions should not be less than the maximum continuous rating of the unit.

d. In case of sudden reduction in demand (load throw off), the Unit should get safely unloaded and stabilized for continuous operation at house load.

e. HP-LP bypass operation under rated steam conditions with bypass valve open to full capacity and turbine on house load.

f. Continuous turbine generator output of at least 500 MW under rated steam conditions, 89 mm Hg (abs) condenser pressure, 3% make-up and 47.5 Hz Grid System frequency.

g. The equipments and auxiliaries shall be suitable for continuous operation in the Grid System frequency range of 47.5 Hz to 51.5 Hz.

1.32 The steam generators for the Power Station shall be sub-critical type of either once through type with single pass (tower type) or two pass arrangement or natural/assisted



circulation drum type with single pass (tower type) or two pass arrangement. The steam generator shall be pulverized coal fired, single reheat, radiant furnace, dry bottom, balanced draft, outdoor type with all auxiliaries, integral piping and elevators, etc.

1.33 The steam generator and auxiliaries shall be capable of giving maximum continuous rating for entire range of ambient temperatures.

1.34 A flue gas desulphurisation (“FGD”) system may be required to be installed by the Seller in future to meet requirements of pollution control, if so required by the law. Therefore, suitable space provisions and other arrangements for installation of the FGD are to be provided by the Seller at the Site.

1.35 The steam generators shall be designed to meet the desired plant operating capabilities for cyclic/two shift operations.

1.36 Fuel oil preparation and firing system shall be designed considering suitable fuel for start up and for coal flame stabilization and low load requirements.

1.37 The design of steam generator shall at least meet the requirements of latest editions of Indian Boiler Regulations (“IBR”). Other standards which are equivalent or superior to IBR can also be used, as if so accepted by the Statutory authorities.

1.38 It shall be the responsibility of Seller to obtain the registration of boiler under IBR.

1.39 The electrostatic precipitator shall be designed considering 100 % Unit load with worst coal having maximum ash content. The dust collection efficiency shall be worked out by the Seller to limit outlet dust burden to 50 mg/Nm3.

1.40 The steam turbine shall be tandem compound, single reheat, regenerative, condensing, multi-cylinder design with separate high pressure (“HP”), separate intermediate pressure (“IP”) and separate low pressure (“LP”) casing(s) or combined HP-IP and separate LP casing(s), directly coupled with generator suitable for indoor installation.

1.41 Operational capabilities of the steam turbine shall be as follows:

(i) HP heaters out of service: Steam turbine shall be capable of continuous operation under conditions where all HP heaters are out of service with maximum output of not less than 500 MW

(ii) Overpressure operations: Steam turbine shall be capable of accepting variation in steam temperature & pressure as per IEC-45 in case continuous over pressure operation is possible.

(iii) Two shift and cyclic load: Steam turbine shall be suitable for two-shift operation and cyclic load variations.

(iv) Part load and start-up: Steam turbine shall be capable of operation on constant pressure mode as well as on variable pressure mode during part load and start up operation. Further, steam turbine generator set shall be capable of being started from cold condition to full load operating conditions as per the requirements of the PPA.



(v) House load operation: Steam turbine generator set shall be capable of operating on house load during sudden total export load throw-off using HP-LP bypass system. The Units shall not trip on over speed in the event of total export load throw-off.

(vi) Steam turbine over speed protection shall operate at 110% of nominal speed.

1.42 Turbine governing system shall be capable of controlling with stability the turbine speed between zero to maximum power output when the Unit is operating isolated or in parallel with other units.

1.43 The steam turbine generator set apart from being capable of operation on high constant loads, shall also be suitable for two shift operation and cyclic load variations as the Unit is expected to operate in automatic load-frequency control system at an early date of its life.

1.44 The Ministry of Environment and Forests, Government of India vide their Gazette notification have stipulated that 100% of the fly-ash generated from any thermal power station should be utilised. The Seller shall be fully responsible for taking suitable measures as may be necessary for complying with the provisions of the said notification. The Seller is responsible to fulfil all his obligations under the said gazette notification.

1.45 The ash handling system shall be designed for disposal of ash in slurry form to ash dyke. Dry fly ash extraction and transportation system with arrangement for 100% collection and storage in dry form shall be provided.

1.46 Dry fly ash storage silos of suitable capacity to collect dry ash from electro-static precipitator and air pre-heater as and when required are required to be constructed by the Seller. Dry fly ash silos are required to be located near or outside the wall of the power station as per requirements of MOE& F.

1.47 A comprehensive fire detection and protection system shall be provided for the Power Station. Such system shall be as per the guidelines /codes/standards/rules of NFPA/IS:3034/OISD and other applicable Indian laws

1.48 All liquid effluents emerging out of the Power Station shall be collected and treated. The treated effluents shall meet the quality requirements indicated in the Gazette notifications of Ministry of Environment and Forests, Government of India and the Uttar Pradesh State Pollution Control Board and complying with the requirements of Consents and Clearances granted for the project.



Electrical Systems

1.49 For the purpose of design of equipment/systems may consider an ambient temperature of 50 degrees centigrade and relative humidity of 95%. The power factor for the design of Power Station shall be 0.85 (lag). However, this information shall not relieve the Seller from any of his obligations under the PPA.

1.50 All equipments shall be suitable for rated frequency of 50 Hz with a variation of (+)3% and (-)5%. The step-up voltage level for the project shall be 765KV. Each turbo generator unit will be connected to its own step-up transformers for feeding power into the extra high voltage (“EHV”) grid. The overall electrical system shall be designed considering maximum voltage variation of (+)/(-)5% and fault level of 40KA for 765 KV and 400KV system.

1.51 All the equipment, material and systems shall, in general, conform to the latest edition of relevant national and international codes and standards, especially the Indian statutory regulations.

1.52 In fire hazardous areas like liquid fuel storage/handling areas, the lighting and receptacles shall be flame proof.

1.53 The electrical schemes for the Power Station as conceived by the Buyer are shown on the electrical drawings (enclosed at Annexure C of this Volume II). The minimum scope for the electrical systems to be created by the Seller is marked in the electrical single line diagrams (enclosed at Annexure C of this Volume II).

1.54 Adequate number of auxiliary transformers shall be provided to meet the demand on medium voltage (“MV”) and low voltage (“LV”) systems, with the criteria that each switchgear, motor control centres (“MCC”), distribution boards (“DB”) shall be fed by 2x100% transformers/feeders, and these shall be rated to carry the maximum load expected to be imposed.

1.55 For safe shut down of the Power Station under emergency condition and in case of total power failure, suitable diesel generating set(s) shall be provided, capable of meeting essential load of the Power Station, without exceeding the permissible starting voltage drop. Black start is not envisaged for the project.

1.56 Transformer's neutral of 765 kV, 400kV, and 415V system voltages shall be solidly earthed through bolted links.

1.57 Fully graded protection system with requisite speed, sensitivity and selectivity shall be provided for the entire Power Station. Critical equipments/systems shall be provided with double protection.

1.58 The layout of the switchyard shall be such that adequate space for maintenance of prime equipment like circuit breakers and current transformers is available. Wherever extension of existing switchyard is involved, the Seller shall arrange for the dismantling of existing common facilities such as light fittings, fence etc as required. Switchyard arrangement shall perfectly match with existing switch yard wherever extension is involved, with respect to levels, roads, drains, trenches, panel heights and colour etc. as applicable.



1.59 The Seller shall be fully responsible for complete insulation co-ordination of switchyard. Seller shall carry out detailed calculations to evolve the required parameters, locations, energy capability etc. of surge arrestors such that an adequate protective margin exits between the peak impulse voltage occurring due to other connected sub-stations.

1.60 The 400kV outdoor switchyard shall employ double main and transfer breaker switching scheme in line with the existing arrangement. The layout shall be such that the buses shall be of quad-moose conductor. Equipment shall be placed at ground level with equipment interconnection and buses at about 8.0m (first) level. The bus interconnections/jumpering shall be at about 16m (second) level. To achieve double main and transfer scheme/interconnection conductor shall be at third level of 22 m.

1.61 The control of generator and associated circuit breakers shall be provided from control desk/ panels to be located in the Unit control room. The control and the protection panels for 400 KV Switchyard extension works and new 765 KV Switchyard may be either accommodated in a new switchyard control room or Unit Control Room to be constructed by the Seller.

1.62 The generator and its excitation system shall have a capability at least matching the declared maximum continuous rated output of the associated steam turbine (for the designed secondary cooling water temperature ) in all the conditions mentioned under the Electric System Limits mentioned in Paragraph 1 of Schedule 3 of the PPA. It shall be ensured that when the generator is working at this capability and cooling water temperature is at its designed value, no part of the generator shall attain a temperature in excess of the temperature limits specified for class B insulation as per IEC-34.

1.63 The turbo-generator shall be required to meet the following requirements:

1. Voltage Variation +/-5% continuously at rated power factor. Reduced MVA operation at 110% of the rated voltage. (to be indicated by the Seller on or before Financial Close)

2. Frequency Variation 47.5 HZ to 51.5 Hz.

3. Combined voltage and frequency variation

5%

4. Power factor variation 0.85 (lag) to 0.95 (lead)

5. Operation under unbalanced load

As specified in IEC 34-1

6. Operation under unsymmetrical short circuit

Negative sequence current I2 expressed in per unit of rated current for a duration of ‘t’ second such that the value of I2t shall comply to IEC 34-1

7. Voltage Wave form The telephone harmonic factor (T.H.F) shall be within the limit specified in IEC 34-1.

8. Short Circuit withstanding capacity

Capable of withstanding of 3 phase short circuit at the generator terminals when operating at rated MVA and power factor with 5 % over voltage for a period of not less that 3



seconds.

9. Special operating conditions

Capable of withstanding the electrical, mechanical and thermal stresses developed during fast reclosing of high voltage line, transmission line switching, faults, out of step operation and out of phase synchronisation etc.

10. Line Charging Capability

Not less than 30% of its rated MVA at zero pf.

11. Generator Neutral Earthing

Non-effectively earthed through a distribution transformer, loaded with a resistor. The core design to permit the flow of earth fault current of at least 15 amperes for one (1) second without any core damage

12. Impulse level & Surge Protection

To be suitable for test voltage of 4U+5 KV. (U is rated voltage in KV).

Lightning arrestor of suitable rating shall be provided for the surge protection of generator winding. In case surge capacitors are recommended, the same shall also be provided.

1.64 Earthing system shall be designed as per IS 3043 and IEEE: 80. The lightning protection system shall be designed as per IS: 2309. It shall cover all building and structures of the Power Station, balance of plant and switchyard and transformer yard areas.

1.65 All protection relays to be used for main generator circuit, EHV switchyard shall be numerical type.

1.66 The protection system shall be arranged to provide two independent, high performance and reliable systems with separate monitored direct current (“DC”) supplies, separate current transformer (“CT”)/voltage transformer (“VT”) cores, separate cables and trip relays to obtain hundred percent (100%) redundancy. Associated trip relays of these two systems shall be separate, having sufficient number of contacts for all the functions. Each protection shall energize both trip coils of the circuit breakers to be tripped.

1.67 The numerical generator and unit transformer protection system shall comprise the following minimum protections.

a) Generator differential protection

b) Stator earth fault protection covering 100% of winding

c) Stator standby earth fault protection covering 95% of winding (trip)

d) Inter-turn fault protection

e) Duplicated loss of field protection

f) Back up impedance protection

g) Negative sequence current protection, alarm and I22t element for trip matching with



the machine characteristics

h) Duplicated low-forward power interlock

i) Two stage rotor earth fault protection (alarm and trip)

j) Definite time delayed over-voltage protection for alarm and trip

k) Over fluxing protection for generator and generator transformer having inverse time characteristics suitable for generator/generator transformer over fluxing capability

l) Overall differential protection

m) Overhead line connection differential protection including generator transformer high voltage winding.

n) Backup earth fault protection on generator transformer high voltage neutral

o) Generator under frequency protection with alarm and stage trippings and with df/dt elements

p) Generator pole slipping protection

q) Accidental back energisation protection for accidental closure/flashover of EHV breaker or EHV disconnecting switch as applicable

r) Excitation transformer instantaneous and time delayed over current protection on high voltage side of excitation transformer, if applicable

s) Generator transformer differential protection for individual/three phase(as applicable) bias type having instantaneous high set over current elements

t) Provision for necessary protection, control and monitoring interface from individual alarm and trip inputs given by the generator transformer and unit transformer for all operating conditions including the following:

i) Winding temperature protection

ii) Oil temperature protection

iii) Buchholtz protection

iv) On load Tap Changer buchholtz protection

v) On load Tap Changer oil surge protection

vi) Pressure relief valve protection

vii) Power supply fail

viii) Cooler fail

ix) Tap changer trouble

u) Voltage transformer fuse failure protection having alarms and for blocking the voltage transformer fed protection.

v) Any other protection proposed by the Seller

w) Unit Transformer LV Restricted Earth Fault and back-up earth fault protection.



x) Unit transformer back-up over current protection.

1.68 The Metering System for the generator and unit transformer shall be as follows:

a) Generator Main and Check MWh meter.

b) Generator Main MVARh meter.

c) MWH meter for each unit and station / standby transformer (as applicable)

d) MWH meters shall be of accuracy class of 0.2 or better. MVARh meters shall have accuracy class of 0.5 or better.

e) Each station transformer shall be provided with the following minimum protections:

i) Three pole differential protection

ii) Restricted earth fault protection on HV and low voltage (“LV”) winding

iii) Backup over current protection on HV side

iv) Over fluxing protection for HV side

v) Back-up earth fault protection on LV side (on neutral CT)

vi) Necessary auxiliary relays for transformer buchholz, winding and oil temperature, and any other transformer protections, for alarm and trip.

vii) Suitable auxiliary CT, if required, for the metering circuit of the station transformer.

f) Each interconnecting transformer shall be provided with the following minimum protections:

i) Three pole differential protection

ii) Restricted earth fault protection on HV and medium voltage (“MV”)

iii) Backup directional overcurrent and earthfault protection on both HV and MV sides

iv) Overfluxing protection on HV side

v) Necessary auxiliary relays for transformer buchholz, winding & oil temperature, and any other transformer protections, for alarm and trip.

1.69 The EHV line shall have the following minimum protections



Distance protection relay

a) The reach of the relay for zones 1,2 and 3 should be able to cover line lengths associated with the Power Station

b) It shall have stepped time-distance characteristics and shall have at least two directional and one non-directional independently variable time graded distance protection zones.

c) Tripping characteristics shall be polygonal and/or mho circle with and without offset and with independently adjustable reactive and resistive reaches separately for each zone. Tripping characteristics shall be user selectable.

d) It shall include power swing blocking protection

e) It shall include fuse failure protection

f) It shall have user configurable scheme logics such as permissive under-reach (PUTT), permissive over-reach (POTT), direct transfer trip, blocking scheme etc. using communication channels. The scheme shall be complete so that the operator can select any option at site without any modification. Non – carrier aided schemes such as Zone – 1 extension shall be provided to ensure high speed clearance during channel failure.

g) It shall have built in auto-reclosing scheme

h) It shall have a built-in open jumper protection

i) It shall have built-in check synchronising feature

j) It shall have built-in dead line charging feature

k) Over voltage protection scheme

l) The main-I numerical distance relay shall be provided with built-in disturbance recorder.

1.70 The Seller shall provide all interfacing requirements and modifications/alterations on AC/DC circuits of the bus bar protection including separate high speed trip relays for all the bays in Sellers scope with the existing bus bar protection of Anpara A and B power stations.

1.71 Subject to the other provisions of the PPA, the Seller shall be responsible for protecting the Power Station in case the frequency and voltage of the Grid System exceeds the limits specified in Paragraph 1 of Schedule 3 of the PPA.

1.72 The Seller shall comply with the interconnection and operational conditions as laid under the Grid Code.

1.73 The Seller shall provide microprocessor based distributed digital control monitoring and information system for the safe and efficient operation of steam generator, turbine generator, balance of plant and all auxiliaries.

Civil and Structural Systems

1.74 Structures shall be designed for the most critical combinations of dead loads, imposed loads, equipment loads, crane loads, piping loads (static friction and dynamic), wind



loads, seismic loads and temperature loads. In addition, erection and loads, loads and forces developed due to differential settlement shall also be considered.

1.75 For design of all underground structures, foundations, circulating water ducts, etc. ground water table shall be assumed at the finished ground level.

1.76 Earth pressure for all underground structures shall be calculated using coefficient of earth pressure at rest or co-efficient of active earth pressure, whichever is applicable, depending upon the structural configuration. However, for the design of substructure of pump houses, earth pressure at rest shall be considered. Co-efficient of passive earth pressure shall be used only in design of shear keys for stability against sliding.

1.77 For the foundations of turbo-generator, boiler feed pumps, fans (induced draft, forced draft and primary air), mills, etc. detailed static and dynamic analysis shall be done.

1.78 All structures shall be designed for wind forces in accordance with IS:875 (Part-3).

1.79 The Seller shall carry out the study for site-specific seismic design parameter and design criteria through any reputed agency.

1.80 Seismic forces based on the above study shall be considered for design of structures and equipments.

Site Details

Project Location : Place: Anpara, District: Sonebhadra, State: Uttar Pradesh

Latitude and Longitude of Project Location

: North: 24 deg. 12'

East: 82 deg 46' 21''

Nearest Railway Station : Anpara

Distance of Project Location from the Railway station

: Approximately 2.5 kms

Nearest Major Town : Anpara

Distance of the town from the Project Site

: 2 Kms

Nearest Commercial Airport : Varanasi

Distance of Airport from the Project Site

: 250 Kms

Nearest Highway : National Highway No.51(Singrauli-Pipri road)

Distance from nearest highway point to the site

: 0.5 kms.



An area of about 380 hectares is already available between Pipri – Singrauli Road. The Anpara ‘A’ Power Station of capacity 630 MW (3 X 210 MW) and Anpara ‘B’ Station of Capacity 1000 MW (2 X 500 MW) have already been constructed in the available area.



PART -3

DESCRIPTION OF FACILITIES FOR ASSISTANCE IN DESIGN

1.1 This section provides brief details of various system as an aid to the Seller for designing the proposed Power Station. Provided that the adequacy or inadequacy or accuracy or in-accuracy of these details shall not relieve the Seller of any of his obligations under the RFP Project Documents.

1.2 Water Facilities

Nearest Water Source

Rihand Reservoir shall be the water source for the Project

Proposed water requirement for the Power Station

0.05 maf (about 69 cusecs)

Proposed source/ arrangement to meet the water requirement :

Raw Water shall bedrawn from Intake Channel where provision of stop log gates has been provided for future expansion for Anpara C.

Any other information Water Commitment available Vide letter no. 2/260/2003-PA(N)/798 , Date 23.05.2003

The raw water analysis will be provided to the successful bidder.

1.3 Coal Linkage/Availability and Transportation

(i) Coal Linkage/Availability

Envisaged Coal requirement for the Power Station

4.5 million tons per annum

Coal GCV and PLF considered for the linkage purpose only:

3885 Kcal/kg and 80%

Proposed source/ arrangement to meet the coal requirement

Khadia Expansion OCP of Northern Coal fields

Coal Commitment/ Coal Link: Coal linkage for the project was considered by SLC (LT) in its meeting on 6.01.2003 and the committee agreed to grant in-principle linkage of 4.5 MTPA for this TPS from NCL sources.



(ii) Coal Transportation

Existing coal transportation arrangement

Merry go round system of Anpara A and B power stations

Proposed Coal transportation arrangement

Merry go round system of Anpara A and B power stations

(iii) Coal Quality Parameters and Fuel Oil Characteristics

The Standing Linkage Committee (“SLC Long Term”) has granted coal linkage for the Power Station from the proposed Khadia Expansion Mines of Northern Coalfield Limited.

The ultimate analysis of coal as available for the other mines located in the vicinity is furnished below for the general information of the Bidders.

Khadia Coal:

Ultimate Analysis of Khadia Coal

Turra Seam Purewa bottom seam

Purewa top seam

Ultimate Analysis: Dry Mineral matter free basis C% 79.5 – 81.2 78.4 – 80.3 78.0 – 79.3 H% 4.5 – 5.0 4.7 – 5.3 4.7 – 5.0 N% 1.5 – 1.7 1.4 – 1.7 1.6 – 1.8 S% 0.4 0.5 0.5 O2% 12.7 – 13.4 14.8 13.4

Bina & Kakri Coal

Ultimate Analysis of Khadia Coal

Turra Seam Purewa bottom seam

Purewa top seam

Ultimate Analysis: Dry Mineral matter free basis C% 79.9 – 81.0 79.2 – 80.4 79.2 – 80.0 H% 4.7 – 5.0 4.9 – 5.1 4.8 – 4.9 N% - - - S% 0.1 – 0.7 0.4 – 0.5 - O2% - - -

Details relating to the proposed Khadia Expansion Mines and coal quality parameters as received from NCL are enclosed at Annexure A of this Volume II.

The typical fuel oil characteristics relating to Heavy Fuel Oil IS-1593 1971 Grade HV are mentioned below.

1. Total sulphur content 4.5% Max

2. Gross Calorific Value (kCal/kg) 10280 (typical)

3. Flash Point (Min) (PMCC) 66 deg C

4. Water content by volume (Max) 1.0% Max



5. Sediment by weight (Max) 0.25% Max

6. Asphaltene content by weight (Max) -

7. Kinemactic viscosity in Centistokes 50 deg C (Max) 370

8. Ash content by weight (Max) 0.1%

9. Acidity (inorganic) Nil

(iv) Fuel Supply Arrangements

The Ministry of Coal, Government of India accorded coal linkage for the Project to UPRVUNL on 1st August 2002. As per the approval, coal for the Project is to be made available to UPRVUNL on cost plus basis. A copy of the letter from GoI is enclosed as Annexure A. As per the approval, 4.50 million tonne per annum coal from the Khadia Expansion Opencast Project of Northern Coalfields Limited is to be supplied to the Project from the date to be negotiated between the Seller and the coal company.

The existing coal transportation system for Anpara ‘A’ and Anpara ‘B’ stations comprises of a Merry Go Round System. It is proposed that the existing Merry Go Round System for the Anpara ‘A’ and Anpara ‘B’ Projects will be shared with Anpara ‘C’ project as well.

1.4 Meteorological Data

Data of the area around the Site is enclosed as Annexure C.

1.5 Geotechnical Investigation

The bore hole data for the Geo-technical investigation carried out by UPRVUNL at the Site is enclosed as Annexure C of this Volume II.



PART -4

COMMON SYSTEMS AND EQUIPMENTS

1.1 This Part describes the details of the common systems and facilities of the existing Anpara A and B power stations that are proposed to be shared with the Seller.

1.2 The details of common facilities and equipments/systems, which the UPRVUNL shall share with the Seller are detailed below.

Coal Transportation System

1.3 The coal for fuel at Anpara A and B stations is carried from Khadia, Kakari and Bina coal mines located in the Singrauli coal mining area about 10 kms southwest of the power station.

1.4 The coal is loaded at the loading station into wagon and is transported by the merry-go-round railroad (MGR) upto the power station. The outline of existing merry-go-round system and layout plan of existing MGR track within the power station is placed at Annexure C of this Volume II.

1.5 (Deleted)

1.6 Seller shall be responsible for transporting the coal supplied by the fuel supplier in accordance with the provision of the fuel supply agreement to be executed between the Seller and the Fuel Supplier from the fuel supplier’s loading point. For this purpose the Seller shall be granted the right of usage of the existing merry-go-round system of UPRVUNL. For the said transportation requirements, Seller shall procure adequate number of diesel locomotives of suitable capacity (minimum 2 Nos.) and adequate numbers of wagons (minimum one hundred and twenty (120) nos of sixty tonne each.). The Seller shall also operate and maintain the said locomotives and wagons.

1.7 A joint committee of UPRVUNL and the Seller shall undertake the scheduling and dispatch of the coal rakes relating to Anpara A, B and C with the objective of ensuring that the scheduling and dispatch is undertaken in a non-discriminatory and equitable manner.

1.8 Bidders may refer to the Facilities and Services Agreement for further details.



1.9 INTENTIONALLY OMITTED

1.10 Intentionally Omitted



1.13 Intentionally Omitted.

ASH TRANSPORTATION AND HANDLING SYSTEM

1.14 UPRVUNL has constructed main ash dyke in the area as marked on the drawing no. A-8/89-90 enclosed at Annexure C of this Volume II. The capacity of the ash dyke is likely to be sufficient to meet the requirement of ultimate station capacity of 2630 MW for the designed plant life of 30 years. Seller will be permitted to discharge his ash slurry in the existing ash dyke. The commercial terms and conditions for the said usage shall be as per the Facilities and Services Agreement.

1.15 For laying the ash slurry discharge pipelines, overhead/underground power line, water line for ash water recirculation system, UPRVUNL shall grant the right of usage of the area earmarked in the enclosed drawing no. A-8/89-90 enclosed as Annexure C of of this Volume II. For this purpose, Seller shall not be allocated any other area apart from the land indicated in the drawing. The Seller shall be responsible to construct ash slurry discharge pipelines, ash-water recirculation lines and overhead/underground power lines for ash water recirculation pump house .

1.16 The Seller shall be responsible to construct the ash water recirculation system for recirculation of ash water discharged from the Power Station. The location space for the ash water recirculation facilities at ash dyke shall be finalized by the UPRVUNL and the Buyer with the Seller within sixty days of Financial Close.

SWITCHYARD AND START UP POWER SYSTEM

1.17 UPRVUNL owns the switchyard associated with Anpara A and B power station. The Seller is required to draw his start up power and common station auxiliary power from the existing 400 KV Switchyard by installing two nos. new station transformers. The scheme is per enclosed SLD No. CW-EN-9357–E-001 enclosed as Annexure C of this Volume II. The terminal points are as defined at Part 1 of this Volume.

1.18 The space earmarked for construction of Seller’s facilities including 765 KV and 400 KV Switchyard works has been earmarked in the enclosed plot plan. Seller is responsible for establishing the adequacy of the available area for switchyard and construct his facilities in the available space.

1.19 The Seller is required to install energy meters of 0.2 accuracy class for import/export at all the interconnection points as identified in the Single Line Diagrams. The instrument transformers to be utilized for the metering purposes shall also be of accuracy class 0.2. The start up and commissioning power will be made available to Seller from the 400 KV existing Switchyard of UPRVUNL, for which the metering arrangements shall be provided on the 400 kV side of the Interconnecting Transformer by the Seller. The charges for start-up power will be borne by the Seller and the rate shall be as per applicable Tariff Schedule of the local distribution company.



1.20 Seller shall construct 765 KV Switchyard for evacuation of power from the Anpara C as per the Single Line Diagram No. CW-EN-9357–E-003 placed at Annexure C of this Volume II. The Anpara – Unnao 765 kV line presently charged at 400 kV shall be disconnected from the present 400 kV switchyard and reterminated at Sellers switchyard by UPPCL. In addition, the Seller shall also be responsible for constructing necessary line bay(s) for accommodating one no. additional 765 KV transmission line, if technically feasible. The energy meters of accuracy class 0.2 shall be provided in the line bay for measurement of power.

1.21 The existing 400 KV and Sellers 765 KV switchyards shall be interconnected by means of 2 Nos. ,1000 MVA ( 3 x 333 MVA, single phase ) 400 KV/765 KV interconnecting transformers as indicated in the enclosed single line diagram. The metering arrangements shall be by means of 0.2 accuracy class meters for both import and export of power. The meter shall be provided on the 400 kV side of the interconnecting transformers.

1.22 Intentionally Omitted.

1.23 Seller is required to complete the installation and commissioning works of 2 Nos. 1000 MVA ( 3 x 333 MVA), 400 KV / 765 KV Interconnecting transformers along with the associated 400 KV and 765 KV Switchyard including Anpara – Unnao Line bay not later than forty three (43) months from signing of PPA. Thereafter , UPPCL shall disconnect the Anpara – Unnao line from the existing Switchyard and reconnect the same to Seller’s 765 KV Switchyard.

WATER SYSTEM

1.24 Raw water shall be drawn to raw water pump house through the intake channel. A new raw water pump house has to be constructed by the bidder.

1.25 The Seller shall provide necessary measurement devices to measure the supply of the water.

1.26 The Seller shall be responsible to create his own facilities for meeting the requirements of D. M. water, service water, potable water, fire-water, clarified water etc for the Power Station.

1.27 The Seller shall be permitted to discharge the treated effluents from effluent treatment plant to the existing discharge canal at the terminal point as per the layout finalized by the Seller after detailed engineering.

1.28 The Seller shall be permitted to connect his storm water discharge to the existing storm water discharge canal of UPRVUNL nearest to the Power Station.

1.29 AUXILIARY STEAM

1.30 UPRVUNL shall provide the auxiliary steam to the Seller to meet his auxiliary steam requirements during commissioning and initial start up and also during operational phase of his plant for which interconnection pipelines/valves shall be provided by the Seller.

1.31 The steam shall be supplied to the Seller in accordance with arrangements indicated in the Facility and Services agreement.The parameters of auxiliary steam at the terminal points are 16 ata (abs)/ 320 deg C and 16 ata (abs)/ 250 deg C for high/low temperature auxiliary steam headers respectively.

1.32 Seller shall inform UPRVUNL at least sixty days in advance the quantity of Auxiliary Steam required for the construction and commissioning works of Power Station.



1.33 The terminal points for the interconnection have been provided in Part 1 of this Volume.

1.34 Seller shall make his own arrangements for interconnection and usage of auxiliary steam from the identified terminal points mentioned in clause 2.8 of Part 1 of this Volume.

1.35 The information provided herein above does not in anyway relieve Seller from any of his obligations under the RFP Project Documents. Bidders are advised to carry out their own due diligence of the available facilities for obtaining information as may be needed by them.

1.36 The auxiliary steam arrangement shall be provided to the Seller by UPRVUNL during the Construction period as well as operating period.



PART -5

DETAILS OF ANPARA “A” AND “B” POWER STATIONS

1.1 The existing Anpara thermal power project comprises three (3) units of Anpara A power station (3 x 210 MW) and two (2) units of Anpara B power station (2 x 500 MW). The data provided herein below is of informatory nature only. UPRVUNL accepts no responsibility for the validity/applicability/accuracy of the data provided herein below.

1.2 Existing boiler and auxiliary equipment specifications of Anpara A and B power stations are provided below:

Anpara A Anpara B

Boiler and Auxiliaries Unit 1 Unit 2 Unit 3 Unit 4 Unit 5

Name of Manufacturer BHEL BHEL BHEL MHI MHI

Type Radiant, Reheat, Single Drum, Semi-outdoor Type

Radiant, Reheat, Single Drum,Semi-outdoor Type

Circulation Method Natural Circulation Boiler Forced Circulation Boiler

Main Fuel Coal Coal Coal Coal Coal

Fuel Auxiliary Fuel Oil LDO LDO LDO LDO LDO

Type of atomisation of Oil (in case fuel is oil)

Pressure Atomization Steam Atomizing M-Jet

Output (Design Output) (MW) 210 210 210 500 500

Output (Available Output at the Preset) (MW)

210 210 210 500 500

Steam Generation (t/h) 680 680 680 1,720 1,720

155 155 155 187 187 At Superheater

Outlet Steam (kg/cm2)

(oC)

540 540 540 543 543

36.1 36.1 36.1 40.5 40.5 At Reheater

Outlet Steam (kg/cm2)

(oC)

540 540 540 540 540

Pressure and Temperature

At Economizer 170.2 170.2 170.2 136 136



Inlet Feedwater

(kg/cm2)

(oC)

243 243 243 252 252

Type of Draft System Balanced Draft Balanced Draft

Inlet Air Temperature to Wind Box (oC)

316 316 316 340 340

Exhaust Gas Temperature (oC) 129 129 129 156 156

Exhaust Gas Flow Rate (t/h) 800 800 800 1900 1900

Main Fuel

Consumption

In case of Coal (at full load conditions) (t/h)

148 148 148 350 350

Location of Burners Furnace Front Furnace Front

Thermal Efficiency (Average)

In case of Coal Firing (%)

85 85 85 85 85

Mixed Fuel Burning Ratio

(Oil: Coal) (%)

20 20 20 20 20

1.3 The outline specifications of the boiler attachment equipment of Anpara B power station (Units No. 4 and 5 (500 MW each)) are provided below:

(a) Boiler circulation pump

3 x 50% /unit (including one spare), (2,940 m3/h x 30 m each).

(b) Pulverizer or mill

8 x 12% /unit (including 3 spare units), (78 t/h each (63 ton with surplus 15 t/h).

(c) Coal feeder

16 x 6% /unit (including 4 spares), (50 t/h each (31.5 ton with surplus 18.5 t/h).

(d) Cold primary air

2 x 60% /unit (6,900 m3/h each with 25% margin, 420 mmAq)

(e) Forced Draft fan

2 x 60% /unit (22,600 m3/h each with 42% volume margin, 420 mmAq)



(f) Induced Draft fan

2 x 60% /unit (33,300 m3/h each with 35% volume margin, 500 mmAq)

(g) Primary air heater

2 x 60% /unit (air side heating area 7,266 m2 and gas side heating area 8,880 m2)

(h) Combustion air heater

2 x 60%/unit (air side heating area 15,932 m2 and gas side heating area 19,462 m2)

(i) Soot blower

SH: 12, rh:4, Eco:4, AH:8, Wa1 :88

(j) Burner

Coal burner: 32 (4/pulverizer)

Fuel oil burner: 16(2.6 t/h each)

(k) Fuel oil storage tank

3 x 4000 kl

(l) Fuel oil pump

2 x 10% / unit (including one spare), up to 40% MCR load assisted by fuel oil

(m) Electrostatic precipitator

2 x 60% / unit

1.4 Existing steam turbine and auxiliary equipment specifications are provided below:



Anpara A Anpara B

Steam Turbine and Auxiliaries

Unit 1 Unit 2 Unit 3 Unit 4 Unit 5

Name of Manufacturer BHEL BHEL BHEL Toshiba Toshiba

Installation (Indoor/ Outdoor)

Indoor Indoor Indoor Indoor Indoor

Split number of casing

3 3 3 2 2

Type

Number of exhaust flow

2 2 2 6 6

Cycle Non-reheat/Reheat

Reheat Reheat Reheat Reheat Reheat

Exhaust Direction

Down Flow/Side Flow/Axial Flow

Down Flow Down Flow Down Flow Down Flow Down Flow

Design Power Output at Generator Terminals (MW)

210 210 210 500 500

Rotating speed (rpm) 3000 3000 3000 3000 3000

Pressure (kg/cm2)

152 152 152 169 169

Temperature (oC)

538 538 538 538 538

Steam Conditions at Main Stop Valve Inlet

Flow (t/h) 627.3 627.3 627.3 1507 1507

Turbine Exhaust Pressure 0.1226 (kg/cm2)

0.1226 (kg/cm2)

0.1226 (kg/cm2)

76.6 (mm of Hg)

76.6 (mm of Hg)



Anpara A Anpara B Condenser

Unit No. 1 Unit No. 2 Unit No. 3 Unit No. 4 Unit No. 5

Name of Manufacturer BHEL BHEL BHEL BHEL BHEL

Type One Pass Single Water Box Horizontal Spring Support

Shell Divided Surface Type

at Condenser Suction (oC)

36 36 36 33 33 Cooling Water Temperature At Condenser

Discharge (oC) 44.5 44.5 44.5 41.06 41.06

Flow Rate (t/h) 27000 27000 27000 6900 6900

Cooling Surface (Total) (m2) 1495 1495 1495 27280 27280

Number of Tubes 19208 19208 19208 28946 28946

Tube Size (mm) 25.4x1.245 25.4x1.245 25.4x1.245 22.235x712x 1360

22.225x7112x1360

Tube Material 90-10 Cu Ni Welded SS to SA249—P304

1.5 The outline of the specifications of the steam turbine and auxiliary equipment of Anpara B power station (unit No. 4 and 5) are provided below:

(a) Make-up water pump

2 x 10% / unit (including one spare unit)

(b) Condensate pump

3 x 60%/unit including one spare unit)(770 ton/h each with 30% margin)

(c) Low pressure feed water heater: LP1, 2 and 3

3 x 100% x 1 train/unit (Tube material: welded (LP-1) and seamless (LP-2 and 3), stainless steel.

(d) High pressure feed water heater L HP5 and 6

2 x 50% x 2 trains/unit (Tube material: seamless (HP-5 and 6), stainless steel.

(e) De-aerator LP4

1 x 10% / unit, storage capacity equal to MCR 10 (Condensate flow max.: 1.525, 1 ton/h, storage capacity : 290 ton, Operating weight : 456 ton.)



(f) Boiler feed pump: Steam turbine driven, 2 x 60% / unit (1,090 ton/h each)

Motor driven, 2 x 30%/unit (545 ton/h each)

(g) Condensate polishing plant

3 x 62% unit (including one spare) (H-OH method, 705 ton/h each train)

(h) Circulating water pump: 6 x 21,727 t/h x 41 mAq/unit

(i) Chlorination system: 5 x 20 kg/h/2 units, Chlorine Ton Container : 8 x 800 liters

(j) Turbine bypass system

High pressure bypass: 1 x 60% (2 x 515 ton/h) unit

Low pressure bypass: 1 x 60% (2 x 400 ton/h) unit

1.6 The existing specifications of the generator of each unit of Anpara A and B power plant and auxiliary equipment are shown below:

Anpara A Anpara B

Generator and Auxiliaries Unit 1 Unit 2 Unit 3 Unit 4 Unit 5

Name of Manufacture BHEL BHEL BHEL BHEL BHEL

Type Water and H2 Cooled

Water and H2 Cooled

Water and H2 Cooled

Synchronous 3 Phase, H2

cooled

Synchronous 3 Phase, H2

cooled

Apparent Capacity (MVA) 247 247 247 589 589

Voltage (kV) 15.75 15.75 15.75 21 21

Rated current (kA) 9.85 9.85 9.85 16.194 16.194

Power Factor 0.85 0.85 0.85 0.85 0.85

Effective Capacity (MW) 210 210 210 500 500

Rotating Speed (rpm) 3000 3000 3000 3000 3000



Number of Poles 2 2 2 2 2

Coil Temperature Rise

B Class/F Class

75 75 75 Class F Class F

Stator Water Water Water Water Water

Cooling Medium

Rotor H2 H2 H2 H2 H2

Type of Exciter Static/ Brushless

Static Static Static Static Static

Insulation Class B Class/F Class/Other

- - - Class F Class F

(a) Main transformer

Type: Outdoor oil immersion type single phase transformer (OFAF), 1 set/unit

Capacity:3x200 MVA(120/160/200; ONAN/ONAF/OFAF), voltage:21/420/3 kv

(b) Station auxiliary transformer

Type: Outdoor oil immersion type three phase transformer, 1 set/No. 4 and 5 unit

Capacity: 36/60 MVA (ONAN/ONAF), voltage; 132/6.9 kV

Provided with a full capacity on-load tap changer

(c) Unit auxiliary transformer

Type: Outdoor oil immersion three-phase transformer, 2 sets/unit

Capacity: 30 MVA (ONAN), voltage; 21-22/6.9 kV

Full capacity on-load tap changer.

(d) Generator main circuit

Type: Isolated phase bus duct, capacity: 24 kV/18 kA, Max. Temp. : 85degC

(e) 400 kV switch yard

Bus bar composition: double main bus bar+ bypass bus bar, rated voltage, 420 kV

Rated current: 2 kA, rated short-circuit current: 40 kA, breaker: GCB (SF6 gas insulation breaker)



Generator bay: 2, power line bay:5, bus duct connection bay:1, bypass bay:1, bus section:1

(f) High-tension switchgear: MCC

Rating:7.2 kV –63 kA for 3 sec. Breaker; vacuum circuit breaker (VCB), board structure:IP

(g) Low-tension switchgear: PCC, MCC

Rating: 415V-45 kA for 3 sec. (PCC), 415V-50kA for 0.5 sec. (MCC)

(h) Electric motor

Armour: Indoor: IP 54, Outdoor IP 55

(i) Direct current equipment

Supplying power: 220 V, 2 x 1,80 Ah/ 128 cells

Control: 220 V, 1,80 Ah / 128 cells

Instrumentation control: 48 V, 1,70 Ah/128 cells

Substation: 220 V, 508 Ah

1.7 The outline of the specifications about the control system equipment of Anpara B power station (unit No. 4 and 5) is described below:

(a) Central unit control board (UCB)

Type: A perpendicular board and a desk-type control board, 1 set/unit

(b) Plant control computer

CPU: TOSBAC 7/40E, main memory: 1 MB x 2 NMOS

Auxiliary memory: 15 MB x 21 C Bulk/20MB x 9 fixed disk

Peripheral equipment: Colour (CRT; 6, typewriter: 4, colour hard copy: 1

(c) Automatic plant control system (“APC”)

Type: Microprocessor –based, digital

(d) Mill-burner automatic control system (“MBC”)


(e) Unit interlock, sequential control system




(f) Local control system


1.8 The outline of the specifications of the service water and waste water treatment equipment of Anpara B power station (unit No. 4 and 5) is provided below:

(a) Raw water pond

1 x 360,00 m3/2 units

(b) Clarified water under ground storage tank

2 x 1.600 t/h / 2 units

(c) Clarified water under ground storage tank

1 x 1,6000 t/2 units (made of concrete: 24 m x 20 m x 4.5 m)

(d) Pressure filter

3 x 60% / 2 units (including one spare filter) (2 towers, 240 m3/h each)

(e) Filtered water storage tank

2/2 units

(f) Sludge disposal equipment

Intermittent sludge disposal type: 200 m3/h

(g) Service water storage tank

3 x 5,000 m3/ 2 units (steel tank)

(h) Water demineralizing plant

(6 x AFC + 6 x C + 6A + 6 MBP)/2 units (6 trains x 90 m3/h each)1 and 60 t/2 unit (Concrete Made : 24 M x 20 M x 4.5 M)

(i) Demineralizing water tank

5 x 2,000 t/2 units (steel tank)

(j) Unit make-up water tank

2 x 300 m3/unit (steel tank with floating diagram roof)



(k) Waste water treatment system

1 x 160 t/h / 2 units

(l) Waste water pond: 2 x 2,000 m3/2 units (waste water pond)

Neutralizing pit: 2 x 600 m3/2 units

Neutralizing pump: 2 x 200 m3 /h/2 units

1.9 The outline of the specifications of the coal transportation and the coal stock equipment of Anpara B power station (unit 4 and 5 (500 MW)) is described below:

(a) Coal receiving track hoper

Six hoppers x Max. 1,260 t/h for A and B power plants

(b) Coal receiving conveyor

2 x 2,520 t/h (w =1,600 mm)/2 units

(c) Primary coal crusher

2 x 2,560 t/h/2 units, grain size 300-150 mm

(d) Secondary coal crusher

2 x 1,250 t/h/2 units, grain size 150-20 mm

(e) Stacker/Reclaimer

1 x 2,500 t/h x 2,560 t/h

(f) Stock pile

180,000 m2/plant B and plant B extension, in 2 rows

(g) Coal feeding conveyor

2 x 2,520 t/h / 2 units

(h) Boiler coal bunker

2 x 8 rear bunkers/2 units

1.10 The outline of the specifications for the ash disposal equipment of Anpara-B power plant (unit No. 4 and 5) is described below:

(a) Slurry Pipe



6 x 550 mm dia. X 10 km/ 2 units

(b) Slurry pump

8 x 50% /2 units (including 2 spares (30 m3 /h each))

(c) Ash transfer pump

High-pressure pump: 8 x 50%/2 units (including 2 spares) (2,10 m3/h x 80 mAq each) Low-pressure pump: 8 x 50%/2 units (including 2 spares) (2,10 m3/h x 40 mAq each)

(d) Seal/cooling water pump

Seal water pump: 4 x 100%/2 units (including 2 spares) (72 m3 /h x 130 mAq each)

Cooling water pump: 4 x 100%/2 units (including 2 spares) (48 m3 /h x 25 mAq each)

(e) Fly ash transfer system

Ash silo: 7 x 6,00 m3/h

EP hoper: 40 x 3,000 m3/h

Vacuum pump: 55 m3 /min x 480 mmAq

(f) Furnace bottom clinker handling equipment

Submerged scraper conveyor & grinder: 2 x 47.1 t/h/unit

Scraper speed: 1-5min, clinker crushing machine rotation speed: 1,248 rpm

Emergency bottom ash transition hopper: 4 x 4 h/unit (4 Hrs capacity with 4 Nos. hoper gates)

1.11 The outline of the specifications of the simulator equipment of Anpara B power station (Unit no. 4 and 5 (500 MW)) is described below:

(a) 1 x central operation board for simulation/two units.

(b) Computer: TOSBAC7 / 70 G & 7/40E, NMOS8MB/DISK

(c) Capacity: 399.3 MB

1.12 The civil and architectural structure of Anpara-B power plant (unit 4 and 5) and the outline of the specifications of the construction heavy machine are described as follows.

(a) Boiler building: Half outdoor type seven layer floor, 36 m x 55.6 m surface area/unit, height of 74 m.



(b) Turbine building: Indoor type four layer floor, 49 m x 193 m surface area/unit, height of 31 m.

(c) Chimney: RC chimney (upper part 16 m dia., lower side 25 m dia.), and 2 x brick inner cylinder/ 2 units, height of 275 m.

(d) Water treatment building

(e) Ash handling equipment building

(f) Coal pulverizing building

(g) Simulator equipment building

(h) Circulation water pump building

(i) High-voltage switchgear building

1.13 The outline of the specifications of the transmission equipment of the Anpara power project is described below:

(a) Power lines connected to the Anpara B substation are as follows:

• Anpara-Varanasi (Sarnath) ACSR 520 mm2, 2-conductor 2-line, total length 317 km

• Anpara-Unnao ACSR 520 mm2, 4-conductor single line, total length 409 km

• The power line for Unnao is constructed with 800 kV design for use with the Power Station and is transmitting the electric power of Anpara B to Unnao by 400 kV operation as of now. It is scheduled to be connected to Anpara 800 kV substation to be constructed anew at the time of the completion of the Power Station, and will be stepped-up to 765 KV level.

(b) Anpara-A 132 kv switch yard

• Anpara-B switch-yard is connected to Anpara-A switchyard of the Anpara-A power station (unit No. 1-3) via a bus duct. The following power transmission equipment is connected to this Anpara-A substation:

q One circuit for Singrauli q One circuit for Obra q One circuit for Azamagarh q One circuit for Kanpur q 132 kV switchyard report: 3-line for use within Anpara premises use

3-line

(c) 132 kV substation

• Transmission to colony: Two – lines • AmarkantakTransmission to colony: Two –lines

(d) Amarkantak/Rihand: Loop IN in 2-line transmission, Loop out in 2-line transmission.



PART -6

DETAILS OF PERMITS, LICENSES AND CLEARENCES

1.1 This section describes the details of the various statutory and other permits, licenses and clearances obtained by UPRVUNL for the construction of Power Station in the state sector.

1.2 UPRVUNL has obtained/got revalidated necessary permits and clearances. The copy of the following clearances and permission is enclosed with this Volume.

1.3 The major permissions obtained from the statutory authorities are listed as below:

i) Notification of scheme in Govt. of UP Gazette published on 18.05.2002.

ii) Permission letter dated 22/07/2002 from Government of Uttar Pradesh under UP Electricity Supply Act 1948 - Section 18 A.

iii) NOC letter dated 03/06/2002 from Airport Authority of India regarding Stack height.

iv) Letter of Comfort dated 28/03/2002 from Northern Coalfields Limited for long term supply of coal.

v) Office Memorandum dated 15/04/2002 of Ministry of Power recommending the long-term coal linkage to Ministry of Coal, Government of India.

vi) Order of Ministry of Coal and Mines, Department of coal dated 1/08/2002 granting the coal linkage for Anpara C.

vii) Ministry of Coal and Mines, Department of Coal letter dated 05/02/2003 confirming the long-term coal linkage granted for Anpara C.

viii) EPR and coal quality parameters as received from NCL providing the details of coal from the proposed Khadia Expansion Mine.

ix) Letter dated 15/11/2002 from Government of Uttar Pradesh regarding allocation of water for the Project.

x) Central Water Commission (CWC) order dated 23/05/2003 regarding allocation of water for Anpara C.

xi) NOC letter dated 23/01/1996 from U.P. Pollution Control Board for Anpara C.

xii) Clearance letter dated 25/07/1996 from Ministry of Environment and Forest, Government of India regarding Anpara C.

xiii) Letter dated 24/05/2002 from U.P. Pollution Control Board regarding revalidation of permission.

xiv) Letter dated 29/11/2002 from Ministry of Environment of Forest, Government of India regarding revalidation of Environment Clearance.

xv) Letter of Comfort dated 22/05/2003 from UPPCL regarding readiness of Unnao substation matching with the commissioning of Anpara C.

xvi) Techno- economic clearance dated 16/01/2003 from Central Electricity Authority (CEA)



1.4 The Seller shall ascertain the validity and applicability of the above permits, consents and clearances. UPRVUNL shall assist the Seller in the matter of transferring and/or obtaining, consents and clearances from MOEF . UPRVUNL shall also assist the Seller in the matters related to conclusion of FSA with NCL. The Seller may note that all the above clearances/licenses/permits have been obtained by UPRVUNL for the Anpara C project to be developed as an extension project in the State Sector under full ownership of UPRVUNL ..

1.5 Other than the above listed clearances at above, UPRVUNL has not obtained any other approval/permission/clearance. Sellers may ascertain if any other clearance(s) need to be obtained for the Project. Seller shall be fully responsible to obtain such clearance(s) also. However, necessary cooperation as required shall be accorded by UPRVUNL and Buyer.

1.6 In pursuance to the linkages/sanctions granted by the various authorities, Seller shall negotiate and enter into commercial agreements with the concerned authorities.

1.7 While granting permissions for Anpara C, certain conditions were needed to be complied by UPRVUNL relating to Anpara A and B power stations. UPRVUNL has already complied and/or will comply to any or all such requirements as may be required to comply.

1.8 UPRVUNL shall grant their no–objection–certificate for transferring all the permissions and linkages in favour of the successful Bidder. UPRVUNL shall extend their necessary co-operation in this regard.



PART -7

POWER STATION TESTING REQUIREMENTS

1.1 This part describes the details of the minimum tests (“Construction Contractor Guarantee Tests”) to be performed by the Construction Contractor for the Power Station. The Seller shall incorporate these test requirements in the Construction Contract and provide a report to the Buyer, in accordance with the provisions of the PPA, on completion of the Construction Contractor Guarantee Tests. It is clarified that the obligation of the Seller with respect to the Construction Contractor Guarantee Tests shall be limited to only undertaking such tests and providing a report thereof to the Buyer and shall not in anyway require the Seller to demonstrate that the Construction Contractor Guarantee Tests have achieved any guaranteed parameter.

1.2 General Requirements for the Construction Contractor Guarantee Tests

a) The Construction Contractor shall make the Power Station ready for the Construction Contractor Guarantee Tests.

b) All instruments required for Construction Contractor Guarantee Tests shall be of the type and accuracy required by the code and prior to the test, the contractor shall get these instruments calibrated in an independent test Institute.

c) The Construction Contractor shall obtain the approval of the Seller for the detailed Construction Contractor Guarantee Tests procedure containing at least the following:

(i.) Object of the test

(ii.) Various guaranteed parameters and tests as per contract.

(iii.) Method of conductance of test and test code.

(iv.) Duration of test, frequency of readings & number of test runs.

(v.) Method of calculation.

(vi.) Correction curves.

(vii.) Instrument list consisting of range, accuracy, least count, and location of instruments.

(viii.) Scheme showing measurement points.

(ix.) Sample calculation.

(x.) Any other information required for conducting the test.

d) The Construction Contractor Guarantee Tests shall be carried out as per the agreed procedure.

e) The Construction Contractor Guarantee Tests guarantee tests shall be conducted by the Construction Contractor at Site in presence of Seller on each Unit individually.

f) The detailed test reports on each of the Construction Contractor Guarantee Tests to be carried out by the Construction Contractor and witnessed by the Seller shall be provided to the Buyer.

g) Construction Contractor shall provide the steam generator efficiency as per the requirements of BS2885 (by loss method) and any other Seller stipulations.



i) Test Loads : 100% TMCR (500 MW unit Load)

: 80% TMCR (400 MW unit Load)

ii) Test Conditions: Boiler operating at rated steam parameter, excess air, coal fineness, firing coal as agreed by the Seller with the Construction Contractor.

iii) Ambient air conditions: 27degC temperature (Dry bulb) and 60% relative humidity. The reference air temperature for the efficiency guarantee/ testing shall be taken as the temperature of air entering PA and FD fans.

iv) The efficiency quoted by the Construction Contractor shall comply with following limiting/referral parameters with firing coal as agreed by the Seller with the Construction Contractor:

a) Excess air at economizer outlet: 20% (min.) (at TMCR load)

b) Corrected flue gas temperature: 125degC or as at air preheater outlet predicted by the Seller (at TMCR load), whichever is higher.

c) Loss due to unburnt carbon: 1.5% (min.) in ash (at both guarantee point loads i.e. 80% and 100% TMCR).

h) Construction Contractor Guarantee Tests for the turbine generator set will be conducted in accordance with the latest edition of ASME PTC-6.

1.3 Construction Contractor Guarantee Tests: The Seller shall ensure that the following Construction Contractor Guarantee Tests are included in the Construction Contract:

a) Turbine Cycle Heat rate in kcal/kWhr under rated steam conditions at 76 mm Hg (abs) design condenser pressure with zero make up at 500 MW unit load.

b) Turbine Cycle Heat rate in kcal/kWhr under rated steam conditions at 76 mm Hg (abs) design condenser pressure with zero make up at 400 MW unit load.

c) Continuous TG output under rated steam conditions at 89 mm Hg (ABS) worst condenser pressure with 3% make-up.

d) Efficiency of the steam generator at 100% TMCR (500 MW unit load) and 27degC ambient temperature and 60% RH while firing the coal as agreed by the Seller with the Construction Contractor at rated steam parameters, rated coal fineness and rated excess air.

e) Efficiency of the steam generator at 80% TMCR (400 MW unit load) 27degC ambient temperature and 60% RH while firing the coal as agreed by the Seller with the Construction Contractor at rated steam parameters, rated coal fineness and rated excess air.

f) Steam generating capacity in Kg/hr. of steam at rated steam parameters at superheater outlet (with any combination of mills working) while firing coal as agreed by the Seller with the Construction Contractor

g) Auxiliary Power Consumption

The total auxiliary power consumption for the Power Plant including all the turbine generator auxiliaries, steam generator auxiliaries, electrostatic precipitators and turbine cycle and other common auxiliaries required for continuous unit operation 500 MW load under rated steam conditions at condenser pressure of 89 mm Hg (abs) with 3% make-up and with ambient air temperature of 27degC & RH of 60% shall be determined and reported to the Buyer.



1.3.1 The parameters to be demonstrated by Construction Contractor for various systems/equipments are detailed in the following paragraphs.

1.3.2 Start-up, Loading, Unloading and Shutdown Capabilities (For Turbine Generator and Steam Generator)

In addition to the Characteristics Tests listed in the PPA, the Seller shall tie up with his Construction Contractor, the following Construction Contractor Guarantee Tests;

i) Unit Start Up

Start-up time (upto full load) and loading capabilities for the complete unit (steam generator & Turbine Generator together) for cold start conditions (greater than 50 hours shutdown), warm start conditions (between 10 and 50 hours shutdown) and hot start conditions (less than 10 hours shutdown) shall be determined with various turbine operational parameters like vibration, absolute and differential expansion, eccentricity and steam-metal temperature mismatch etc. and various steam generator operational parameters like tube metal temperature, excess air level etc. being within design limits.

ii) Sudden Total Loss of External Load

On occasions, the steam turbine generator unit may experience sudden total loss of all external load. Under these conditions, the steam turbine generator unit should not trip on over speed but should continue to be in operation under the control of its speed governor to supply power for the plant auxiliary load with HP-LP bypass in operation while staying within the agreed limits of steam metal temperature mismatch, exhaust hood temperature, absolute and differential expansion, vibration and eccentricity. The extent of achievement of the above shall be determined through a suitable Construction Contractor Guarantee Test.

1.4 Turbine Generator Capability Test

The Construction Contractor shall demonstrate the extent to which the steam turbine generator unit is capable of delivering at generator terminals the output as indicated by the Construction Contractor, under the following conditions.

a) Continuous output at generator terminals corresponding to VWO condition under rated conditions at a condenser pressure of 77 mm of Hg (Abs) 3% make-up to the cycle.

b) Maximum continuous output at generator terminals corresponding to one string of HP heater out of operation, under rated steam conditions at a condenser pressure of 77 mm of Hg (Abs) and 3% make up.

1.5 The following Construction Contractor Guarantee Tests shall be carried out for T.G. set with test grade instruments as per ASME code.

a) Heat rate test at 500 MW corresponding to the heat balance diagram

b) Heat rate test at 400 MW corresponding to the heat balance diagram

1.6 Capability of unit at VWO conditions, corresponding to the heat balance diagram with 3% make-up.

1.7 Turbine Auxiliaries

i) H.P./L.P. Bypass Capabilities

The HP & LP Bypass system should satisfy the following functional requirements



under automatic interlock actionwhich should come into operation automatically under the following conditions. Through Construction Contractor Guarantee Tests, the extent to which this requirement is being met shall be determined.

a) Generator circuit breaker opening.

b) HP-LP stop valves closing due to turbine tripping.

c) Sudden reduction in demand to house load.

Under all these conditions, while passing the required steam flows as per the relevant heat balances, the condenser should be able to swallow the entire steam without increasing the exhaust hood temperature and condenser pressure beyond the maximum permissible value indicated by Construction Contractor. Through Construction Contractor Guarantee Tests, the extent to which this requirement is being met shall be determined.



PART -8

DOCUMENTATION AND INFORMATION

1.1 The following describes the minimum scope of information, documents, drawings, etc. to be submitted by Seller to the Buyer after the issuance of the Notice to Proceed (NTP) to the Construction Contractor i.e during the design and engineering phase and during site construction of the Power Station. Buyer reserves the right to request from Seller such additional information, drawings, documents, etc. as may be reasonably required for proper understanding and definition of the design and engineering of the Power Station.

1.2 The Seller shall provide four (4) copies of all drawings and documentation to be submitted by it together, in the case of a final submittal of any document, with a well organized electronic file, except as may otherwise be required by the provisions of the PPA or as may otherwise be reasonably required by the Buyer and to each other concerned Person two (2) copies of all documentation (with electronic copy in the case of a final submittal) relating to, or containing information with respect to, connection points or other interfaces between the Power Station and any of the Facilities referred to in the Facilities and Services Agreement.

1.3 Seller shall provide information in the format enclosed as Annexure B as per the provisions of Article 3 of the PPA.

1.4 Technical Information to be provided after Financial Close.

1.5 Within sixty days of Financial Close, the Seller shall provide the Buyer with the following documents.

1.5.1 Description of main features of the proposed Plant such as:

• General description and main features of the Plant and use of the Plot including laydown areas;

• Detailed time schedule;

• Operational philosophy of Power Units (start-up, shutdown of individual units);

• Maintenance philosophy.

1.5.2 Description of major equipment and systems including their auxiliaries:

• Main mechanical equipment and systems including steam generators, steam turbine generator plant, etc.

• Electrical equipment and systems, such as: Generators, Generator Transformers, generator protection, electrical power system philosophy, main electrical equipment including, etc.

• 765 KV HV grid station (protection, metering and control interface);

• Emission control measures;

1.5.3 The description and specifications of the electrical protective devices to be incorporated in the Plant in order to protect the Plant, the 750kV/400KV/132KV grid station and the Transmission System shall require the approval of the Buyer prior to incorporation into the design of the Plant.

1.5.4 Description of Seller’s metering system for the Plant and Facilities referred to in the



Facilities and Services Agreement.

1.6 The following documents shall be submitted by the Seller to the Buyer by the dates set forth below or, if not specified, as and when required:

1.6.1 Monthly progress reports - by no later than five (5) days after the last day of each month commencing on the NTP. The table of contents of the monthly progress reports shall be agreed with Buyer.

1.6.2 Arrangement and layout drawings of any offsite facilities within four (4) months after NTP.

1.6.3 General arrangement and layout drawings.

1.6.4 Underground piping, ducts and cable arrangement drawings (mechanical, electrical and civil).

1.6.5 Overall time schedule relating to the Power Station showing information on the scheduled:

• design and engineering work

• order dates and time of delivery of major Plant equipment and systems;

• site surveys;

• site preparation;

• factory tests for major Plant equipment;

• civil/structural works;

• erection and installation;

• commissioning;

• site tests;

• The following drawings /documents shall also be provided to the Buyer

• Plant location map with areas temporarily used during construction;

• Site plan, general lay-out and arrangement drawings for on- and offsite facilities, indication of fenced areas;

• P&I diagrams for main systems

• Single line diagrams for:

• Plant main electrical systems;

• Plant electrical auxiliary systems;

• Protection diagrams;

• Heat balance diagrams for the Plant for various operating points

• Start-up and loading diagrams (from cold, warm, hot condition) of Units and total Plant;

• Generator performance chart.

1.7 Project documents (data sheets, specifications, P&I diagrams, drawings) for major



systems and components.

1.8 The Seller shall submit the description and details of the following:

• Guaranteed air pollution emission rates and type of emission control and monitoring measures;

• Ambient noise levels.

1.9 System studies executed by Seller to demonstrate that the entire Power Station will perform according to the specified requirements of the RFP Project Documents.

1.10 Load flow calculations for full determination of the voltage profile of the adjacent grid area, reactive power and transformer control requirements as well as the determination of equipment ratings in the event of outages and faults.

• Static and transient short circuit calculations considering symmetrical and asymmetrical faults, for the determination of equipment selections and ratings, earthing requirements, fault voltages and currents as well as equivalent connection point impedance.

• Earthing system calculation

• Protection relay setting study.

• Transient simulations in order to:

• Determine the critical fault clearing times under various loading and operating conditions;

• Verify the Plant performance requirements with respect to active power control as well as voltage control under the most relevant contingencies;

• Verify that expected values of primary response behavior of the power plant are in compliance with the requirements of the grid code;

• Determine the impact of turbine control as well as excitation control on system damping;

• Any transient stability calculation data shall be presented in IEEE format. 1.11 Any revision of the project implementation schedule - by no later than seven (7) days

after such revisions.

1.12 Sellers shall submit a schedule of all major proposed subcontractors and suppliers defining the type of work or service to be subcontracted and the country of origin.

1.13 Copies of reports of all management or other meetings held between Buyer, Seller and/or Construction Contractor.

1.14 Commissioning program with all required Tests procedures as specified in the PPA.

1.15 Additional to the submission of the documentation as mentioned above following documentation (including electronic files) has to be retained by the Seller:

1.16 Operation and maintenance manuals;

1.17 Copies of all test results for tests performed according to the Construction Contract, to the extent as normally retained in accordance with Good Utility Practice;

1.18 As-built drawings for the Plant, including the civil and architectural works; and

1.19 All further technical documentation normally retained on site in accordance with Good Utility Practice.



ANNEXURE -A

COPIES OF PERMITS, CONSENTS & CLEARANCES 1. Notification of scheme in Govt. of UP Gazette published on 18.05.2002.

2. Permission letter dated 22/07/2002 from Government of Uttar Pradesh under UP Electricity Supply Act 1948 - Section 18 A.

3. NOC letter dated 03/06/2002 from Airport Authority of India regarding Stack height.

4. Letter of Comfort dated 28/03/2002 from Northern Coalfields Limited for long term supply of coal.

5. Office Memorandum dated 15/04/2002 of Ministry of Power recommending the long-term coal linkage to Ministry of Coal, Government of India.

6. Order of Ministry of Coal and Mines, Department of coal dated 1/08/2002 granting the coal linkage for Anpara C.

7. Ministry of Coal and Mines, Department of Coal letter dated 05/02/2003 confirming the long-term coal linkage granted for Anpara C.

8. EPR and coal quality parameters as received from NCL providing the details of coal from the proposed Khadia Expansion Mine.

9. Letter dated 15/11/2002 from Government of Uttar Pradesh regarding allocation of water for the Project.

10. Central Water Commission (CWC) order dated 23/05/2003 regarding allocation of water for Anpara C.

11. NOC letter dated 23/01/1996 from U.P. Pollution Control Board for Anpara C.

12. Clearance letter dated 25/07/1996 from Ministry of Environment and Forest, Government of India regarding Anpara C.

13. Letter dated 24/05/2002 from U.P. Pollution Control Board regarding revalidation of permission.

14. Letter dated 29/11/2002 from Ministry of Environment of Forest, Government of India regarding revalidation of Environment Clearance.

15. Letter of Comfort dated 22/05/2003 from UPPCL regarding readiness of Unnao substation matching with the commissioning of Anpara C.

16. Techno- economic clearance dated 16/01/2003 from Central Electricity Authority (CEA).



ANNEXURE –B

FORMATS FOR INFORMATION ON POWER STATION



ANNEXURE –C

DRAWINGS AND DOCUMENTS

1. General Outlook of Anpara Area.

2. Location of Coalfields, Thermal Power Stations and Industries around Anpara Area.

3. General Layout Plant showing areas earmarked for Seller Drg. No. CW – EN – 9357 – G – A- 001.

4. Plot Plan of Existing Power Project based on MITSUI drg. No. G.H.-1001(2).

5. Route Plan of Ash Slurry pipelines from Anpara A, B and C from Power Project to ash dyke area Drg. No. A –8/89 ).

6. Outline of Existing merry –go-round (MGR) system.

7. Metrological Data

8. Electrical Single Line Diagram of 132 KV and 400 KV Switchyard Drg. No. CW-EN-E-9357-001.

9. Electrical Single Line Diagram for Main Plant Drawing No. Drg. No. CW-EN-E-9357-002.

10. Electrical Single Line Diagram of 765 KV Switchyard Drg. No. CW-EN-E-9357-003.

11. (Omitted)

12. (Omitted)

13. Geo-technical bore hole chart.

14. Layout plan of existing MGR track within the power station.

15. Information on Coal Quality Parameters

16. 400 kV Switchyard Main One Line Diagram No. 06S - 11686

2 x 500 MW Anpara ‘C’ Thermal Power Project · transport to site, erection, construction,...

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