2 x 500 MW Anpara ‘C’ Thermal Power Project
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;
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2 x 500 MW Anpara ‘C’ Thermal Power Project
(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
Commissioning including restoration of surface areas.
(d)
facilities
after
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,
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2 x 500 MW Anpara ‘C’ Thermal Power Project
- 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.
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2 x 500 MW Anpara ‘C’ Thermal Power Project
(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
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2 x 500 MW Anpara ‘C’ Thermal Power Project
(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.
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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 tiein 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.
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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 coordinate 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
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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:
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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:
1.22
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.
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
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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 startup 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
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
(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.
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power 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.
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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 I expressed in per unit of rated
2
current for a duration of ‘t’ second such that the value of I t
2
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
Request for Proposal - Vol. II dated 20th February 2006
17
2 x 500 MW Anpara ‘C’ Thermal Power Project
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 To be suitable for test voltage of 4U+5 KV. (U is rated voltage
Protection
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
Request for Proposal - Vol. II dated 20th February 2006
18
2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
Request for Proposal - Vol. II dated 20th February 2006
19
2 x 500 MW Anpara ‘C’ Thermal Power Project
x)
1.68
Unit transformer back-up over current protection.
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
protections:
minimum
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:
1.69
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.
The EHV line shall have the following minimum protections
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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
Request for Proposal - Vol. II dated 20th February 2006
21
2 x 500 MW Anpara ‘C’ Thermal Power Project
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'
Nearest Railway Station
:
East: 82 deg 46' 21''
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.
Request for Proposal - Vol. II dated 20th February 2006
22
2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
Request for Proposal - Vol. II dated 20th February 2006
23
2 x 500 MW Anpara ‘C’ Thermal Power Project
PART -3
DESCRIPTION OF FACILITIES FOR ASSISTANCE IN DESIGN
1.1
1.2
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.
Water Facilities
Nearest Water
Source
Rihand Reservoir shall be the water source for the
Project
Proposed water requirement 0.05 maf (about 69 cusecs)
for the Power Station
Proposed
source/ Raw Water shall bedrawn from Intake Channel where
arrangement to meet the provision of stop log gates has been provided for
water requirement :
future expansion for Anpara C.
Any other information
Water Commitment available Vide letter
2/260/2003-PA(N)/798 , Date 23.05.2003
no.
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 4.5 million tons per annum
Power Station
Coal GCV and PLF considered for the 3885 Kcal/kg and 80%
linkage purpose only:
Proposed source/ arrangement to meet the Khadia Expansion OCP of Northern Coal
coal requirement
fields
Coal Commitment/ Coal Link:
Request for Proposal - Vol. II dated 20th February 2006
24
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.
2 x 500 MW Anpara ‘C’ Thermal Power Project
(ii)
(iii)
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
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
Turra Seam
Purewa bottom
Khadia Coal
seam
Ultimate Analysis: Dry Mineral matter free basis
C%
79.5 – 81.2
78.4 – 80.3
H%
4.5 – 5.0
4.7 – 5.3
N%
1.5 – 1.7
1.4 – 1.7
S%
0.4
0.5
O2%
12.7 – 13.4
14.8
Purewa top seam
78.0 – 79.3
4.7 – 5.0
1.6 – 1.8
0.5
13.4
Bina & Kakri Coal
Ultimate Analysis of
Turra Seam
Purewa bottom
Khadia Coal
seam
Ultimate Analysis: Dry Mineral matter free basis
C%
79.9 – 81.0
79.2 – 80.4
H%
4.7 – 5.0
4.9 – 5.1
N%
S%
0.1 – 0.7
0.4 – 0.5
O2%
-
Purewa top seam
79.2 – 80.0
4.8 – 4.9
-
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
2.
Gross Calorific Value (kCal/kg)
3.
Flash Point (Min) (PMCC)
66 deg C
4.
Water content by volume (Max)
1.0% Max
Request for Proposal - Vol. II dated 20th February 2006
25
4.5% Max
10280 (typical)
2 x 500 MW Anpara ‘C’ Thermal Power Project
(iv)
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
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.
Request for Proposal - Vol. II dated 20th February 2006
26
2 x 500 MW Anpara ‘C’ Thermal Power Project
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-goround 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.
Request for Proposal - Vol. II dated 20th February 2006
27
2 x 500 MW Anpara ‘C’ Thermal Power Project
1.9 INTENTIONALLY OMITTED
1.10
Intentionally Omitted
1.11
Intentionally Omitted
1.12
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.
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
Request for Proposal - Vol. II dated 20th February 2006
29
2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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
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
Natural Circulation Boiler
Forced Circulation Boiler
Boiler and Auxiliaries
Circulation Method
Fuel
Main Fuel
Coal
Coal
Coal
Coal
Coal
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
540
540
540
543
543
36.1
36.1
36.1
40.5
40.5
540
540
540
540
540
170.2
170.2
170.2
136
136
At Superheater
Outlet Steam
(kg/cm2)
Pressure and
Temperature
(oC)
At Reheater
Outlet Steam
(kg/cm2)
(oC)
At Economizer
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
Inlet
Feedwater
243
243
243
252
252
(kg/cm2)
(oC)
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
148
148
148
350
350
Consumpti
on
In case of Coal
(at full load
conditions) (t/h)
Location of Burners
Thermal
Efficiency
(Average)
In case of Coal
Firing (%)
Mixed Fuel Burning Ratio
Furnace Front
Furnace Front
85
85
85
85
85
20
20
20
20
20
(Oil: Coal) (%)
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)
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
(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:
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
Anpara A
Anpara B
Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
BHEL
BHEL
BHEL
Toshiba
Toshiba
Indoor
Indoor
Indoor
Indoor
Indoor
Split number
of casing
3
3
3
2
2
Number
of
exhaust flow
2
2
2
6
6
Cycle
Nonreheat/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
Steam
Conditions
at
Main Stop Valve
Inlet
Pressure
(kg/cm2)
152
152
152
169
169
Temperat
ure (oC)
538
538
538
538
538
Flow (t/h)
627.3
627.3
627.3
1507
1507
0.1226
(kg/cm2)
0.1226
(kg/cm2)
0.1226
(kg/cm2)
76.6 (mm of
Hg)
76.6 (mm of
Hg)
Steam
Turbine
Auxiliaries
and
Name of Manufacturer
Type
Installation
(Indoor/
Outdoor)
Turbine Exhaust Pressure
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
Condenser
Anpara A
Unit No. 1
Unit No. 2
Anpara B
Unit No. 3
Name of Manufacturer
BHEL
Type
One Pass Single Water Box Horizontal
Spring Support
Cooling
Water
Temperatur
e
BHEL
BHEL
Unit No. 4
BHEL
Unit No. 5
BHEL
Shell Divided Surface Type
at
Condenser
Suction (oC)
36
36
36
33
33
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
22.235x712
x 1360
22.225x711
2x1360
Tube Material
1.5
90-10 Cu Ni
Welded SS to SA249—
P304
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.)
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
(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
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
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
Generator and Auxiliaries
Apparent Capacity (MVA)
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
Number of Poles
Coil
Temperature
Rise
2
2
2
2
2
75
75
75
Class F
Class F
Stator
Water
Water
Water
Water
Water
Rotor
H2
H2
H2
H2
H2
Static
Static
Static
Static
Static
-
-
-
Class F
Class F
B Class/F
Class
Cooling
Medium
Type of Exciter
Static/
Brushless
Insulation Class
B Class/F
Class/Other
(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)
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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”)
Type: Microprocessor –based, digital
(e) Unit interlock, sequential control system
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
Type: Microprocessor –based, digital
(f) Local control system
Type: Microprocessor –based, digital
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)
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
(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
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
(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
q
q
q
q
One circuit for Singrauli
One circuit for Obra
One circuit for Azamagarh
One circuit for Kanpur
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.
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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)
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
Request for Proposal - Vol. II dated 20th February 2006
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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:
1.7
·
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.
Project documents (data sheets, specifications, P&I diagrams, drawings) for major
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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.
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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 longterm 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).
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2 x 500 MW Anpara ‘C’ Thermal Power Project
ANNEXURE –B
FORMATS FOR INFORMATION ON POWER STATION
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2 x 500 MW Anpara ‘C’ Thermal Power Project
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-E9357-001.
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
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