EPC PACKAGE FOR BUXAR THERMAL POWER PROJECT … THERMAL POWER PROJECT (2X660 MW) PRE BID...

Vol. No. Section/Chapter No. Title Page Clause no.

1

VOLUME IV :

ELECTRICAL WORKS

29

400 kV GAS INSULATED SWITCHGEAR

Page 4 of 71 29.02.05 ii)

Two (2) Sets of 220 V and 48 V, Lead Acid Plante type battery with 2 x100% float cum Boost chargers for each battery system connected to a DCDB.

i) Please kindly provide AH rating of 220V & 48V Switchyard batteries.ii) Please kindly provide Amp rating of 220V & 48V Switchyard battery chargers.

The provision as per bidding specification shall prevail.

2

VOLUME IV :

ELECTRICAL WORKS

29


Page 4 of 71 29.02.05 iii) One set of redundant 220 V AC UPS with redundant Battery as required.

Please confirm application/utility of "One set of redundant 220 V AC UPS with redundant Battery" - is this for Sub-station Automation System ?


3

VOLUME IV :

ELECTRICAL WORKS

29


Page 4 of 71 29.02.05 iii) One set of redundant 220 V AC UPS with redundant Battery as required.

Please confirm application/utility of "One set of redundant 220 V AC UPS with redundant Battery" - is this for Sub-station Automation System ?


4

VOLUME IV :

ELECTRICAL WORKS

29


Page 34 of 71 29.07.00 SCOPE OF WORK Please confirm whether backup control panels are required in addition to SAS for subject switchyard. The provision as per bidding specification shall prevail.

5

VOLUME IV :

ELECTRICAL WORKS

29


Page 62 of 71 29.41.02 f)

f) The following tests shall be carried out as a minimum requirement:-aa) Dielectric testsbb) Temperature rise testcc) Internal arc testdd) Making and breaking testsee) Rated peak withstand current and rated short time current tests on main and earthing circuitsff) Operation & mechanical endurance tests.

We do not envisage carrying out any type test on 400kV GIS since repeating type tests are expensive, time consuming & involve difficult international logistics. Therefore we shall be submitting valid reports only for the subject type tests. Acceptance confirmation required from STPL.


6

VOLUME IV :

ELECTRICAL WORKS

29


Page 65 of 71 29.44.01 a) jj)

jj) Bidder to submit the Performance certificate for major items supplied /manufactured by them like CT, CB, CVT,PT, Isolator, C & R Panel for satisfactory operation of at least three years as on date of bid opening and shall ensure that offered major items shall be supplied by themonly from same manufacturing unit/works against which they will submit the above performance certificate.

i) We understand that subject clause is not applicable for 400kV GIS. Please confirm.ii) Subject clause mentions "Performance certificate formajor items for satisfactory operation of at least three years as on date of bid opening" , however Vol-II, Chapter-4 - Provenness mentions "successfuloperation for minimum two (2) years prior to the date of Techno-Commercial bid opening" for majority of switchyard equipment (one year for SAS) . Please clarify this discrepancy.iii) Please confirm that parent company performance certificates shall be acceptable for switchyard equipments & 400kV GIS.


7

VOLUME IV :

ELECTRICAL WORKS

29


Page 67 of 71

ANNEXURE-ASYSTEM

PARAMETERSPage 67 of 71

Driving mechanism of circuit-breaker :Stored energy spring /

Hydraulic

Please confirm if mentioned driving mechanism is applicable for 400kV GIS Circuit Breaker. The provision as per bidding specification shall prevail.

8

VOLUME IV :

ELECTRICAL WORKS

29


Page 68 of 71

ANNEXURE-BRATINGS AND REQUIREMENT

Page 68 of 71

Rated short circuit current at ratedmaximum voltage, not less than, kA, rms

(symmetrical)50 KA

i) We understand this is 50kA for 1 sec. Please confirm.ii) Please confirm whether 50kA for 1 sec rating is also applicable for 400kV GIS also.


EPC PACKAGE FOR

BUXAR THERMAL POWER PROJECT (2X660 MW)

PRE BID CLARIFICATION-6DATED:01.11.2018

Sl. No.Enquiry Specification Description as per tender document / Bid

Specification Stipulation Query / Statement of Clarification Shought. Owner's Response

A SWITCHYARD




9

VOLUME IV :

ELECTRICAL WORKS

29


Page 71 of 71

ANNEXURE-DSwitchgear (High

Voltage)400 kV High

Voltage Surge Arresters

Page 71 of 71

400 kV High Voltage Surge Arresters

i) Please confirm quantity of Gas insulated & Airinsulated Surge Arresters in subject switchyard.ii) Please kindly provide separate Technical specification for Gas insulated & Air insulated Surge Arresters.

Refer Amendment - 04

10

VOLUME IV :

ELECTRICAL WORKS

1

ELECTRICAL SCOPE OF WORK AND DESIGNCRITERIA

Page 3 of 48 1.02.06

Service Transformer (LV Transformer) -11/0.433 kV transformers for feeding supply to

LV auxiliary loads for the complete plant. Transformers shall be Dry type (AN) and

located indoors.

Please confirm whether Switchyard LT Auxilliary Transformer shall be outdoor oil filled type or indoor dry type.


11VOLUME VI

: CIVIL WORKS

5

GEO-TECHNICAL INVESTIGATION

Sheet 1 of 4 5.0 Geo-Tech Investigation Report Please kindly provide Geo-Tech Investigation Report of GIS Switchyard area for kind reference please. Refer Addendum-01

12VOLUME II : General & Schedules

5Provenness / General & Schedules

Sheet 35 of 40 5.15.6, 5.15.7,5.15.8, 5.15.9

220 kV CIRCUIT BREAKERS , INSTRUMENT TRANSFORMERS , DISCONNECTORS ,

SURGE ARRESTORS

We understand that subject clauses are not applicable for subject project since only 400kV GIS switchyard is applicable for subject project. Please confirm.

We can install 220 kV line. It is required.


5Provenness / General & Schedules

Sheet 34 of 40 5.15.1, 5.15.2,5.15.3, 5.15.4

400 KV SWITCHYARD, 400 kV CIRCUIT BREAKERS , INSTRUMENT

TRANSFORMERS , DISCONNECTORS

We understand that subject clauses are not applicable for subject project since only 400kV GIS switchyard is applicable for subject project and these clauses pertain to 400kV AIS equipment. Please confirm.

Confirmed for GIS.Refer Amendment - 04

14VOLUME VI

: CIVIL WORKS

5

Civil, Structural & Architectural Works

Sheet 1 of 10 18.0 Piling Please confirm if piling is required to be provided in 400kV GIS Switchyard area. The provision as per bidding specification shall prevail.

15VOLUME III : Mechanical

Works24 Fire Detection,

Alarm Sheet 2 of 70 24.0 24.0 FIRE DETECTION, ALARM & PROTECTION SYSTEM

Please confirm type of Fire detection, alarm & protection system required to be provided in 400kV GIS Hall.


16 VOLUME I

Section –VI: (F&P)

Book 1 of 3 (Part 2)

ATTACHMENT - 3K

62 of 322

ATTACHMENT-3K

PROVENNESS CRITERIA

Page 262 of 322

Sub-Qualifying Requirements for the 400/765kV SwitchyardSub-Qualifying Requirements for the 765 KV Circuit BreakerSub-Qualifying Requirements for the 765 KV Instrument Transformers (Current Transformers/ capacitor Voltage Transformer as applicable)Sub-Qualifying Requirements for the 765 KV DisconnectionsSub-Qualifying Requirements for the 765 KV Surge Arrestors


17 VOLUME I

Section –VI: (F&P)

Book 1 of 3 (Part 2)

ATTACHMENT - 3K

Page 262 of 322

ATTACHMENT-3K

PROVENNESS CRITERIA

Page 262 of 323

Sub-Qualifying Requirements for the 400 KV Surge ArrestorSub-Qualifying Requirements for the 400 KV Circuit BreakerSub-Qualifying Requirements for the 400 KV Instrument Transformers (Current Transformers/ capacitor Voltage Transformer as applicable)Sub-Qualifying Requirements for the 400 KV Disconnections



Page 2





VOLUME II : GENERAL

TECHNICAL &

BID SCHEDULES(BOOK 2 OF

2)

Technical Particulars(Electrical)

Sheet 21 of 129

400 kV Switchyard

Sheet 21 of 129

2.0 400 KV Circuit Breakers3.0 400KV Isolators

4.0 400KV Current transformer5.0 Capacitive voltage transformer

6.0 Lightning arresters

Please confirm if subject GTP pertain to AIS or GIS. Applicable for GIS


11

QUALITY ASSURANCE PLAN FOR ELECTRICALINDEX

Sheet 15 of 62

Quality Assurance

Plan (Electrical)Sheet 15 of 62

E2 : SWITCHYARD

Quality Assurance Plan (Electrical) Please confirm if subject QAP pertain to AIS or GIS. Applicable for GIS

20

VOLUME IV :

ELECTRIC 23 Illumination System Page 25 of 30

ANNEXURE-IILLUMINATION

LEVELSPage 25 of 30

ILLUMINATION LEVELSPlease confirm Illumination level and type of fixtures required for GIS Hall, Swichyard Control Building and Outdoor potheadyard.


1 VII MECHANICAL

TENDER DRGS 47 of 63

Flow Diagram Fly Ash System- Buffer Hopper to Fly Ash Silo

Air Dryer for Conveying Air Compresor is not shown in the Buffer Hopper to Fly Ash Silo Flow Diagram.

Since the FA silo is about 1700-1800 Mtrs away, it is recommeneded to use Air Dryer for TAC. The provision as per bid specification shall prevail . If the

OEM recommends air dryer, the same may be included in the Scope of Supply.

2 VII - TD - LAYOUT 7 of 7 Plot Plan Location of Ash Utility Structures and Buildings

BHEL propose to provide the Autocad copy of Plot Plan so that we can re-work on the plot plan and make the optimize layout of ash handling system.

Will be furnished during detailed engineering to the successful bidder.

1 Volume-VI 10 RCC Strucure & Foundation 3 of 36 10.7 (1st Para)

Turbo- Generator (TG) foundation:The TG foundation shall be conventional machine foundations......without any steel helical springs and viscous dampers.......is permitted..

2 Volume-VI 10 RCC Strucure & Foundation 5 of 36 10.7.1 (a)

Design of Foundation for TG, TDBFP, MDBFP & Fan foundations(i) Scope of Work for Bidder...................arrangement drawings, embedment drawings, spring arrangementdrawings and reinforcement drawings..................

3 Volume-VI 10 RCC Strucure & Foundation 11 of 36 10.12

The number of construction joints in the columns of steam turbine.........following three locations shall be provided:a) At the meeting points of the columns and the raft.b) At the meeting points of the column and the top deck.

There is ambiguity in the clause as starting line suggests three locations for construction joints in columns but only two locations are specified. Please clarify.

Only two locations as provided should be followed.

4 Volume-VI 10 RCC Strucure & Foundation 11 of 36 10.13 (a)

Grade M15 : Fill concrete Bidder opines that grade ofconcrete M10 is also suitable for fill concrete and may also be allowed to be used for this purpose. Please confirm.

Temporary stores to be decided by the bidders.

C1. BOPIn clause 10.7 Ist Para, it has been stated that no VIS is required for TG supporting system while in clause 10.7.1 under the head foundation of TG…, owner is demanding spring arrangement drawing.

Bidder understand that the TG foundation shall be conventional machine foundations comprising of RCC top deck directly supported on substructure comprising of columns and beams without any steel helical springs and viscous dampers. Please confirm.

Confirmed.

Ok.

AL WORKS B. AHP(MECHANICAL)




5 Volume-VI 11

DESCRIPTION OF BUILDINGS, STRUCTURES AND OTHER FACILITIES

1 of 16 11.1.4

A covered store shall be provided.................Covered storage area may also be provided to store other construction.................Contractor may consider using the existing building in the site…………

6 Volume-VI 2

SCOPE OF CIVIL & STRUCTURAL WORKS

6 of 11 2.6 (61)

e) Permanent Store

7 Vol-VII Dwg No. 111-29-0200 Plot Plan Running page-

7 of 7 Item Lists 51. O & M Store54. Construction Stores

8 Volume-VI 2


3 of 11 2.6

20. A raw water intake pump house & intake structure on river Ganga bank and pipe line (MS/GRP) from Intake to raw water reservoir in the Plant area

As river bank please.

9 III 5WATER TREATMENT PLANT

2 of 14 5.1

The source of raw water is Ganga Canal. The river water intake pumps shall be installed in the pump house of canal which shall supply raw water to in plant Raw Water Reservoir of 6 days storage approx. capacity 530,000 cum in two compartments.

10 VI 11

DESCRIPTION OF BUILDINGS, STRUCTURES AND OTHER FACILITIES

15 of 16 11.15.3

During the canal closure, when no water is pumped in, particularly if the canal closure period is extended due to any reason.

11 VI 2


7 of 11 2.6 (62)

(x.) Anti-termite and anti-weed treatment in all areas / buildings as per IS: 6313.

Bidder understands that the antiweedtreatment is required where there is no flooring and concrete paving. Please confirm.

The provision as per bidding document shall prevail.

12 VI 10 RCC Strucure & Foundation 23 & 24 of 36 10.19 c

ii) Duraboard HD or its equivalent of approved manufacturer shall be used as filler for expansion joints.v)Bitumen Compound: When directed, the gap in expansion joints shall be thoroughly cleaned and bitumen compound Manufacturer’s recommendation……..

There is ambiguity in point ii & v. Owner is requested to clarify which material to be used for expansion joints, duraboard HD or bitumen fibre board or any other bituminous material.

Dura Board HD to be followed.

13 VI 6

GENERAL REQUIREMENT OF BUILDING / STRUCTURES

7 of 9 6.16.00

Lath plastering on structural steel member ( in fire prone areas) shall be made according to the recommendation of TAC.

Owner is requested to provide details for lath plastering and specify areas for which it is required.


14 VI Ch 10 : RCC Strucure &Foundation Sheet | 6 of 36 10.7.1 (a)

(iv) Grade of Concrete and reinforcement Grade of concrete for Top deck shall be minimum M35 conforming to IS:456- 2000. The grade of reinforcement for Top deck shall be Fe500 (TMT)conforming to IS:1786.

The provision as per bidding document shall prevail.Bidder understands that for MDBFP and for all fan foundations, which shall be designed as block foundations directly resting on virgin soil below ground level without any separate top deck, M25 shall be used as per clause 10.13 (d). Please confirm.

Owner is requested to provide the details like size, type (temporary or permanent), finishing details, location etc for all the required stores.Permanent store has been stated in few clauses of Technical specification alongwith finishing details but no Permanent Store has been shown in Plot plan instead O & M store has been shown. Please clarify and provide size details.

Different types of stores have been defined in clause 11.1.4. Bidder understands that these are construction stores and are temporary in nature. Please clarify.

Shall be provided during detailed engineering

Please clarify whether intake structure (pump house etc.) to be construted on River Ganga bank or in the canal of River Ganga as there is ambiguity in clauses of technical specification.

Please follow WAPCOS Report.It is Ganga River.




15 VI 10Ch 10 : RCC Strucure &Foundation

Sheet | 11 of 36

10.13

d. Grade M25 : All RCC members, e.g. foundation and superstructure, pedestals, roof slabs, cable and pipe trenches, water retaining structures, cooling water channel, CWPH forebay, raft & sump etc.


16 VIIPLOT PLAN

Dwg no. 111-29-0200

Future plant and laydown

area--- --

Road has been shown in the future extension area of plant

Bidder understands that road shown in the future extension area marked as " Future plant and laydown area" in plot plan is not in bidder's scope. Please confirm.


III 12

VENTILATION SYSTEM / Air Washer Units for Turbine Building

6 of 16 12.4.1.1

Numbers of Air washer units each of maximum capacity 1,00,000 m3/hr, with all accessories, DIDW centrifugal fans, circulating water pumps etc. shall be provided.


II 4Provenness / Ventilation System

Sheet 9 of 40 4.7

The bidder/ its sub-vendor should have designed, supplied, erected, and commissioned atleast two (2) ventilation systems including air washer units having individual fan capacity of 1,25,000 Cum./Hr. or more at each ventilation system, in Industrial/ Commercial installations. The systems should have been in successful operation for atleast two (2) years prior to the date of technocommercial bid opening.


C2. HVAC

1

1. Please note that as per specification MaximumRequired capacity of airwasher is 100000 CMH and as per provenness criteria of Ventilation system, the PQR is 1,25,000 Cum./Hr for individual fan which is not justified.

Customer is requested to review the Provenness Criteria for Ventilation system and accept 80,000 CMH air washer capacity instead of 1,25,000 CMH individual fan capacity as proveness criteria.

2. a)There are reputed system integrators available in market for Ventilation System. Considering the capacity of the reference (i.e. 80,000 CMH) required as proposed against serial no. 1 above, bidder/ its sub-vendor having one (1) reference may be allowed instead of two (2) references.b)Further, since actual ordering of ventilation systemwill take place after lapse of significant time from date of commerical bid opening, there shall be restriction on the references that can be produced by supplier w.r.t. completion of 2 years of successful operation (as latest supplied system may not qualify for the proveness criteria). Thus, to improve competition, customer is requested to relax proveness criteria to allow supplier who has supplied one (1) no. ventilation system and the system is in successful operation for atleast one (1) year prior to date of technocommercial bid opening.




2 II 4

Provenness / Air Conditioning System

Sheet 9 of 40 4.6

The bidder/its sub-vendor should have designed, supplied, erected and commissioned atleast two (2) Air conditioning systems each having a total installed capacity of 300TR or more, which should have included atleast one chilling unit with a minimum capacity of 60TR at each reference system in Industrial/Commercial installations. The systems should have been in successful operation for atleast two (2) years prior to the date of techno-commercial bid opening.In addition, the chiller unit(s) proposed to be supplied for this package shall be sourced from the manufacturer(s) who have manufactured and supplied atleast two (2) similar type of chiller units each having a capacity of not less than 150 TR, which should have been in successful operation for atleast two (2) years prior to the date of technocommercial bid opening.

1. It is very difficult for Chiller manufacturer to arrange performance certificates from end user as the chiller is supplied through AC system supplier, in general. Further, bidder/ its sub-vendor shall be procuring the chiller from BHEL standard list of makes of chiller (which shall be furnished to customer for information during detail engineering). In view of this, it is proposed that the proveness requirement mentioned here shall be excercised only in case any new manufacturer (in addition to BHEL standard list of makes of chiller) is required to be approved during detail engineering.

2. a)There are reputed system integrators available in market for AC System. Considering the capacity of the reference (i.e. 300TR) required as per proveness criteria, bidder/ its sub-vendor having one (1) reference may be allowed instead of two (2) references. b) Further, since actual ordering of Air conditioning system will take place after lapse of significant time from date of commerical bid opening, there shall be restriction on the references that can be produced by supplier w.r.t. completion of 2 years of successful operation (as latest supplied system may not qualify for the proveness criteria). Thus, to improve competition, customer is requested to relax proveness criteria to allow bidder/ its sub- The provision as per bidding document shall prevail.

3Volume IIGeneral & Schedules

Ch-9 Ch 9 : Mandatory Spares

Sheet 50 of 106

9.00 (Sr. No. 1) Mandatory spares of Reciprocating Chilling mac

Reciprocating Chilling machine is not applicable in the present project, Therefore Mandatory spares of the same shall not be applicable.Please confirm

Volume VInstrumentation & Control

Works

Part B/Ch 18:

ControlPhilosophies for BOP Packages

Sheet | 32 of 33 18.08.00

CONTROL PHILOSOPHY FOR AIR CONDITIONG SYSTEM ANDVENTILATION SYSTEM.The control & instrumentation for Air condition System and Ventilation System of main plant TG building and ESP building shall be done through with Hot Redundant Standby Processor based plant DDCMIS system covering the total functional requirement of sequence control, interlock and protection, monitoring, alarm, data logging etc.The control & instrumentation for Air condition System and Ventilation System of service building and Administration building shall be done through with Hot Redundant Standby Processor based PLC system covering the total functional requirement of sequence control, interlock and protection, monitoring, alarm, data logging etc.The control & instrumentation for Air condition System and Ventilation System of respective BOP package shall be done through with Hot Redundant Standby Processor based respective BOP DDCMIS system covering the total functional requirement of sequence control, interlock and protection, monitoring, alarm, data logging etc. The provision as per bidding document shall prevail.

4

There is ambiguity w.r.t. Control philosophy of AC and Ventilation system in relevant clauses of chapter 18 (C&I Spec.) and chapter 11 (Mechanical Spec.) of specification. Kindly note that DDCMIS based control sytem shall be provided for Air-Conditioning System & Ventilation System for the following Areas.a) AC system for CCR, CER, UPS, Battery charger room of Power house and ESP building.b) AC system for service building.c) AC system for FGD control room.d) Wet Ventilation system (Air washers) for TG building.e) Wet Ventilation system (UAF) for ESP building.Further it may be noted that1. Control of package Units and split ACs provided in the Auxiliary buildings shall be as per clause no 11.5.6 (XVI) and 11.5.7, chapter 11, vol-III of tender specification respectively.2. Fans provided for dry ventilation system in variousauxiliary buildings shall be locally operated (on/off switch).

Further, Since admin building is not in bidder's scope AC system for this building has not been envisaged




Volume- III Chapter 11 :

AirConditioning

System Sheet 28 of 30 11.11

Plant Control for Air conditioning systemi) Air Conditioning System control system shall be PLC based. The PLCconfiguration and detailed specification of the same shall be as perControl & Instrumentation requirements specified elsewhere in the specification. The provision as per bidding document shall prevail.

1Volume III :Mechanical

Works

Ch 28 : Cranes &

HoistsEOT Cranes

Sheet 3 of 1528.2.3

If BFP’s are provided in BC bay or are not accessible to TG hall EOT crane as per layout requirement, one (1) no. of electrically operated travelling cranes for each unit with associated auxiliaries, alongwith electricalequipment, control & instrumentation as required and specified shall be provided in the BC bay for erection and maintenance of boiler feed pumpand their auxiliaries. The main hook capacity of each crane shall be 10% over and above the heaviest component/ equipment to be handled (including lifting beam if applicable and slings etc) or 65 T whichever is higher. Further the EOT crane shall have necessary facilities such as lifting beam with swiveling arrangement and slings for erection as well as maintenance of the equipment. Auxiliary Hook of 10 T shall be provided in the cane for handling BFP.

The main hook capacity of each crane shall be 10% over and above the heaviest component/ equipment to be handled. Requirement of minimum capacity of 65T may please be deleted.Please confirm.


2

Volume III :Mechanical

Works

Volume VI :Civil,

Structural & Architectural

Works

Ch 4 : Raw Water

Intake SystemSheet 2 of 3

Ch 02 : Scope of Work

Sheet | 3 of 11

Raw WaterIntake System

Scope of WorkSheet

Sheet 2 of 3

Sheet 3 of 11

Chapter 4.0 RAW WATER INTAKE

SYSTEMClause 4.1

Clause no. 20, Ch 02 : Scope of

Work

"The scope of work shall include piping from pump discharge to raw water Pumphouse with necessary pipe supports, motorized isolation valves, NRVs, air release valves etc as required for completeness of the system.Intake water pump discharge pipe size shall be minimum 1200 mm spirally welded pipe to IS: 3589. Thickness of the pipe shall be as mentioned in Chapter 27 – Low Pressure Piping. "

“A raw water intake pump house & intake structure on river Ganga bank and pipe line (MS/GRP) from Intake to raw water reservoir in the Plant area”. Kindly check and raise pre-bid, if required.

Disprenacny wrt to Tender specification is noted in Vol-II Mechanical works & Vol-VI Civil Structural & Architectural works, which is reprodued below:-

"As per Cl No. 4.5 of Tender Specification MS line(confirming to IS: 3589) is to be considered from Intake to Raw water reservoir, whereas as per as per 'Cl No. 20, of Civil ,Structural & Architectual works', GRP/MS is mentioned."

There is ambiguity of MOC for river water intake piping in the referred clauses. Please confirm the MOC(MS or GRP) to be followed.

Pipe MOC shall be MS as per Volume-III.

C3.MATERIAL HANDLING

system for this building has not been envisaged.

Please Confirm.




3Volume III :Mechanical

Works

Ch 28 : Cranes &

HoistsEOT Cranes Sheet 3 of 15 28.2.3

If BFP’s are provided in BC bay or are not accessible to TG hall EOT crane as per layout requirement, one (1) no. of electrically operated travelling cranes for each unit with associated auxiliaries, alongwith electrical equipment, control & instrumentation as required and specified shall be provided in the BC bay for erection and maintenance of boiler feed pump and their auxiliaries. The main hook capacity of each crane shall be 10% over and above the heaviest component/ equipment to be handled (including lifting beam if applicable and slings etc) or 65 T whichever is higher. Further the EOT crane shall have necessary facilities such as lifting beam with swiveling arrangement and slings for erection as well asmaintenance of the equipment. Auxiliary Hook of 10 T shall be provided in the cane for handling BFP.

Since erection is one time activity, which is carried out by other means like using outside cranes. Subsequest to Erection of BFPs, BC Bay crane is required only for maintenance purpose. Accordingly, one (1) no. of electrically operated travelling cranes for each unit shall be provided in the BC bay for maintenance purpose only. Please confirm.


1 III 6Flue GasDesulphurisation System

Sheet 52 of 54 6.11.2

The Bidder shall perform model study (CFD modeling) of complete systemto achieve an optimum size and layout of the ducting/absorber, uniform distribution, required SOx reduction and minimum pressure drop.

Clarification:CFD Analysis is not required since DCFS FGD is proven in more than 100 installations. DCFS FGD design shall ensure uniform flow distribution in Inlet & Outlet ducting & inside the Absorber.


Sheet 21 of 54 6.5.1

The absorber slurry tank/storage shall be designed for minimum 4 (four) minutes retention time based on the design point absorber slurry flow rate

Clarification:

The Bidder’s criteria to define the absorber tank volume is basically the following three parameters:

1. The tank volume required for forced oxidation performance2. The tank volume required for neutralization load.

Bidder designs the Absorber tank volume according to bidder’s experience with taking into account above two parameters, but not the retention time.

Moreover, our standard slurry concentration is 30 wt. % and therefore gypsum solid basis retention time of absorber tank is almost equivalent with the conventional spray tower. Normally as per our FGD, the absorber slurry tank/storage will be designed for minimum 2 (Two) minutes retention time based on the design point absorber slurry flow rate. DCFS FGD is proven in more than 100 installations hence kindly accept this deviation.

D. FGD






Sheet 15 of 54 6.4.1.5.e)

The duct from Absorber outlet to bypass duct shall be made ofCarbon steel of minimum 7mm thickness with 2 mm (minimum)thickness lining/cladding/wallpaper of 2 mm(minimum)thickness ofalloy 276/ Alloy-59 or better material.

Clarification: In addition to C276 / Alloy 59, bidder re-quest customer include titanium material for Absorber outlet ducting. Titanium is highly corrosion and abrasion resistant material and widely used in FGD application. Please accept.


Sheet 22 of 54 6.5.1.A. 4)

The slurry recirculation pumps shall have motor driven knifegate valve at pump suction and discharge side.

Clarification: Normally in case of any recirculation pump stoppage the gate needs to be quickly closed without leakages in the slurry lines. In case of knife gate valves, there may be leakages after few operations due to wearing of compo-nents. In such applications, we propose to provide pneumatic/ Motorized operated butterfly valves that are widely provided in FGD plants.

Kindly confirm.


Sheet 22 of 54 6.5.2

Sufficient number of agitators, as per the proven practice of the contractor, shall be provided for thorough mixing of the recirculating slurry. In case the Contractor's Absorber includes side entry agitators, thecontractor shall offer and demonstrate mixing arrangement such that n-1 number of agitators are sufficient to avoid the slurry settlement in the absorber tank in case of one agitator under breakdown (n-total no. of working agitators). In case vertical agitators in Absorber are offered, one complete mechanical assembly of agitator shall be supplied as warehouse spare for each Absorber

Clarification:As per our FGD design, under normal FGD operation, the Jet Air Sparger (JAS) works to keep the slurry in suspension and no agitators are required to be in operation. The Agitators are required only during FGD stoppage to prevent the deposit settlement. For this purpose, we are offering two numbers of Agitators. However, to meet tender requirement, we offer one spare as a ware house spare.


Sheet 24 of 54 6.5.6.2)

Homogeneity shall be ensured, if the deviation from the average is less than ±10%. Further in the absorber outlet hood no internals such as guide vanes and baffle plate shall beallowed.

Clarification:Customer's requirement "deviation from average: less than +10%" is too strict and it is not mandatory for the stable opera-tion at the actual plants based on MHPS' experiences.The deviation from average is generally 15% and MHPS designed and deliv-ered FGD plants based on the deviation from the average for approx. 15%.Deviation from "+10%" in customer’s re-quirement should be changed from "+10%" to "+15%".


Sheet 26 of 54 6.5.6.10)

The raw gas inlet duct of the absorber shall be equipped with aflushing device of the side walls and the ground, which shalloperate continuously as well as intermittently.

Clarification:Wet dry washing is provided at FGD absorber inlet to flush the side walls and the ground. It shall operate continuously as well as intermittently.



Sheet 28 of 54 6.5.6.24)

It should be possible to discharge the absorber sump into theemergency drain tank within 2 hrs. Bidder may provide additionalpumps for the same.

Clarification:We propose 8 hours to discharge the slurry from absorber / absorber sump into the emergency drain tank to have optimum design of pumps.Please confirm








Sheet 33 of 54 6.7.2.5)

The hydro-cyclone shall be of proven design and shall be provided with replaceable rubber lining. The hydro-cyclone shall be provided with replaceable rubber lining of thickness 12 mm for feed chamber and 12 mm for the overflow launder. The liners shall have a minimum wear life of not less than 7000 hrs.



Sheet 30 of 54 6.6.5.3)

The hydro cyclone shall be provided with replaceablerubber lining and thickness of 12 mm for the feed chamber and 12 mm for the overflow launder.



Sheet 33 of 54 6.7.3.2).c Gypsum Purity 90% (minimum) not less than 84% for guaranteed point limestone analysis

Clarification:Limestone purity of 89% as CaCO3 is necessary to get 90 wt. % of Gypsum Purity So Gypsum purity will be guaranteed based on 89 % of Limestone purity as CaCO3 (FGD Guarantee point).

Please confirm



Sheet 28 of 54 6.6 LIMESTONE GRINDING AND SLURRY PREPARATION SYSTEM

Clarification: Kindly confirm the the quantity of Limestone Grinding & Slurry Preparation system required for the both units.

Agree with bidder comment.


Sheet 40 of 54 6.8.5.2)All the pipes handling slurry shall be provided with replaceablerubber lining of proven quality. The

Clarification:As per proven practice, all the pipes handling slurry shall be provided with FRP material. FRP pipes are highly corrosive & abrasion resistant material and widely used for slurry application. Since we are using spray headers inside Absorber made up of FRP. Requesting customer to give FRP option also for pipes handling slurry.



Sheet 13, 14 of 54 6.3

Design Consideration:Design Point:BMCR load with Worst Coal Guarantee Point: TMCR load with Worst coal

15 II 2

PROJECT INFORMATION / Appendix – II: Coal Quality Parameters

Sheet 5 of 7 Appendix-II

Coal Quality Parameters: Design coal: 0.63% SulphurWorst coal: 0.4 % Sulphur & Best Coal: 1.2 %

16 II 2 Demonstration Parameter for FGD

Clarification: In Volume-II , the demonstration paramaters for FGD system is missing in the tender specification. Bidder request owner to provide the same.

17 II 2 Limestone Anaysis:

Clarification: In Volume-II , the limestone analysus for FGD system is missing in the tender specification. Bidder request owner to provide the same.

Clarification: In addition to rubber lining option for hydrocyclone, bidder request customer include polyurethane material for hydrocyclone. Polyurethane is highly corrosion and abrasion resistant material and widely used in FGD application. Please accept.

Clarification: FGD Design sizing criteria is missing in the tender specification. Customer to furnish the same.In volume-III, it is indicated that FGD design condition at BMCR load with worst coal whereas in Volume-II Apppendix=II, sulphur content is mentioned maximum in the best coal. Kindly clarify whether FGD has to design based on worst coal or best coal. In addition, Chloride & Fluoride content in Flue gas has got implication on Limestone consumption, Recirculation flow rate and waste water quantity. Bidder request owner to provide Cl and F Content in Coal.

Revised Coal Analysis shall be provided through amendments.





18 II 2 3.1 Auxiliary Power

Clarification: In Volume-II , the list drives for FGD system is missing in the tender specification. Bidder request owner to provide the same.


Following works will be excluded from the bidder’s scope:b) Boundary walls/Compound walls around acquired land, boundary wall to separate township from main plant area and plant boundary wall as shown in the drawing.

2 VI 2 Civil, Structural & Architectural Works

11 of 11 2.8.4 (i) Realignment of existing Buddha Nallah a) The diverted nallah shown in plot plan and that in Hydrological Studies Report by IIT-Roorkee are not same and there is a mismatch in the layout/ plan scheme. Owner to please clarify.

The IIT Roorkee Report & M/s Rodic Report are indicative only. Bidder has to make its own assessment & optimise the engineering.

3 VII - Plot Plan 7 of 7 - Plot Plan b) Owner to share drain diversion reportprepared by M/s. Rodic Consultant which has not been furnished till date.

Reports enclosed.

a) Contradiction observed in WAPCOS report.Drg No. BUXAR/2015-16/Topo-01 (Page 154 of 157) suggests that the intake shall be placed approximately 300 m inside the river (i.e. within the river course). However, Drg No. WAP/WRD/BUXAR/PROTECTION WORK (page 156 of 157) indicate the intake shall be constructed on the bank of the river. Thus, it is not clear which location shall be followed.

Owner is requested to clarify precise location of the intake structure i.e. whether intake structure has to be constructed inside the river stream or near the bank.

b) In case intake is to be placed on the bank of the river (as per Drg no. WAP/WRD/BUXAR/PROTECTION WORK), then the type of pump house shall be decided by Bidder. Land acquisition and Right of way, if required, shall be Owner’s responsibility.Please confirm.

Suitable provision for future expansion shall be made by BIDDER whiledesigning / executing the foundation system for last grid of main plantbuilding.

11.2 As per tender plot plan, Bidder understands that separate Turbine building shall be considered for future unit,therefore no provision for extension of the proposed main plant building is envisaged. Please confirm.

Confirmed.

E. CIVIL (ADDITIONAL)

5 VI 11 Building Description

4 of 16

2.6 Bidder understands that Land Boundary (Fencing), Plant Boundary and Ash Dyke Boundary (Fencing) shown in Tender Plot Plan are excluded from Bidder’s scope of work. Please confirm.

Land boundary (fencing) & plant boundary in Owner’s scope. Ash dyke boundary (fencing) is in bidder’s scope.


8 of 9 6.17 (3) WAPCOS Report Bidder has to plan & the scheme design as per his assessment; however, the bidder may refer WAPCOS Report. The land for intake complex at River Bank is under acquisition.


2 of 11




1. II 1 Intent of specification

5 of 12 1.1 Bidders shall note that one (1) more unit of 660MW may be added in future by theEMPLOYER as an expansion unit for possibleaugmentation of the station. For this purpose,the employer envisages suitable spaceprovision to be kept for one (1) 660 MW futureexpansion unit to be integrated along with thatof the present two (2) nos. 660 MW units,which are shown in the indicative Plot Plan(Refer Volume - VII). As such suitableprovision shall be kept by the bidder in variousCivil, Mechanical, Electrical and C&I systemsof present 2x660 MW units for futureaugmentation/integration & interconnection ofcorresponding system &facilities with thepresent units as brought out in varioussubsections/ parts/chapters of the technicalspecification (Volume II to VII).

Owner may please elaborate requirement for keepingprovision in electrical system for present 2 x 660MWunits for future augmentation/integration &interconnection of corresponding system

Space shall be provided in the Switchyard.

Electrical Scope of Work and

Bidder understand that the terminal point for purchaserfeeder for colony and Intake Pump house shall belimited to 11kV outgoing feeder at respectiveswitchgear. Supply and installation of Cable,accessories, OHE from 11kV switchgear tocolony/intake system shall be in the scope of Owner.

Design Criteria

Owner may please confirm.

IV 1 Electrical Scope of Work and

16 of 48 1.11.03 The IPBD shall be based on following factors : There is some contradiction amongst the mentionedclauses regarding continuous current rating selectionfor main run of IPBD.

_____ _____ Design Criteria _____

_____ _____ a) Continuous current rating with 10 % designmargin as per IS 8084

As per standard engineering practice, bidder would liketo propose below mentioned sizing criteria forcontinuous current rating selection for main run of IPBD-

Continuous current rating with 10 % design margin as per IS 8084

IV 4 Isolated Phase Bus Ducts and Neutral Grounding Equipment

5 of 23 4.03.07 b) ...........

_____ _____ _____ _____ _____ c) ................... IPBD main run continuous current rating shall beselected considering Turbine VWO output at 95% ofgenerator rated voltage while all UTs are out ofservice .

IV 4 Isolated Phase Bus Ducts and Neutral Grounding Equipment

5 of 23 4.03.08 d) ........................

e) ...............................

F. ELECTRICAL(ADDITIONAL)

3.

2. IV 1 3 of 48 1.02.08 Purchaser feeders for Colony andIntake PumpHouse shall be as indicated in the Key SLD.

Terminal point for Purchaser feeder for colony shall be limited to 11 kV outgoing feeder at respective feeder. For intake Pumphouse complete work is in Bidder’s scope including supply & laying.




f) ......................................g) ............................................_____ IPBD (main run IPBD, Delta run, common tap-off to UT/Individual IPBD tap off to UT,Excitation Transformer Tap-off, SPVT cubicle)shall be sized considering generator voltage±10% voltage variation from grid source &

generator source._____ Sizing of Equipmenta) Continuous Ratingi) Main Run For calculating the continuousrating, it is to be considered that the Generatoris loaded to 105% with 95% of the ratedvoltage at its terminal.

Power Transformers

INSULATION LEVEL(LI :Lightning ImpulseVoltage, AC : Short duration induced&separatesource AC withstand voltage)

Bidder propose the following insulation level (LI/SI/AC)for 400kV class power transformers (GT & ST)

(Data Sheet of Station Transformer)

a) HV- (LI/AC)400KV side -1425kVp/630kVrms

1) For Winding : 1300kVp/1050kVp/630kVrms

2) For Bushing : 1425kVp/1050kVp/630kVrmsOwner may please confirm.

5. IV 29 400 kV Gas Insulated Switchgear

3 of 71 29.02.02 (j) Required panels/space for the meters to besupplied by PGCIL shall also be provided asper the statutory requirements.

Owner may please indicate number of ABT meters freeissued by PGCIL.

ALL ABT METERS SHALL BE IN BIDDERS SCOPE OF SUPPLY.

Plot Plan111-29-0200 Rev.0

Owner may please provide following details.a. Location of receiving/ other end of outgoing lineb. Length of outgoing lines.c. Requirement of PIR in outgoing line bays.

G1Divertor Gate (DG):Divertor Gate shall be operated through rackand pinion arrangement.

- - In CHP flow diagram:1 no Dozer is shown Due to non-clarity in referred clauses, bidderunderstands that bull dozers are excluded from bidder’sscope of work.

Exclusion: Please confirm bidder’s understanding.4 of 12 i) Procurement/Supply of dozers for coal

handling during O&M stage, locomotiveand fire tenders.

G2 GENERAL

A.0, 1.0 Bidder request Owner to allow bidder for flap gate asan alternative to divertor gate in line with recent NTPCand SEBs projects.


2 VII Flow Diagram D-0444-111-13-5100 (2000)-Model

Dozers are excluded from bidder’s scope. However,dozer shed shall be included in bidder’s scope. Shed shallaccommodate 4 dozers & one bay for maintenance.

1 II 19 Coal Handling System

48 of 154

- GIS Switchyard Refer Amendment- 04

Coal Handling PlantG. MECHANICAL BOP (ADDITIONAL)

7. VII - - -

12.0 (a) The provision as per bidding specification shall prevail.

6. VII GIS Switchyard Owner may please indicate outgoing line corridor in plotplan. This is required to finalise switchyard layout.

Shown in the revised Plot Plan

4. IV 3 39 of 42




II Provenness 14 of 40 4.19.1 4.19.1:The Bidder/ its Sub- vendor should have designed, manufactured/ got manufactured,erected and commissioned at least two (2)number integrated bulk material handling plant(essentially comprising of conveying andcrushing) including all associated structuralsteel works and electrical works of minimum1500 Metric tonnes per hour rated capacity orabove for coal or other minerals of equivalentvolumetric capacity which should have been insuccessful operation for at least three (3) yearprior to the date of Techno- Commercial bidopening. At least one (1) tripper should havebeen supplied and commissioned in the abovebulk material handling plants.

There is ambiguity in referred clauses for theprovenness criteria of material handling plant.

In accordance with Clause No. 4. 19.1 ofChapter 04, “Provenness” , Volume II, weconfirm that we have designed,manufactured/got manufactured, erected andcommissioned at least two number integratedbulk material handling plant (essen- tiallycomprising of conveying and crushing)including all associated structural steel worksand electrical works of 1000 Metric tonnes perhour rated capacity or above for coal or otherminerals of equivalent volumetric capacity,which is in successful operation for at leastthree (3) years as on date of Techno-commercial bid opening.

Bidder will consider the provenness criteria for materialhandling plant as per "attachment 3K clause A, page no204 of 322 of Volume-1 ".

Kindly confirm.

204 of 322I Attachment-

3KA.

1. 1 Clause 4.19.1 shall prevail.




II Provenness 15 of 40 4.19.2 The Bidder/ its Sub- vendor should havedesigned, manufactured, supplied, erected andcommissioned including all associatedstructural steel works and electrical works atleast three (3) number cantilever boom type,slewable andluffable, bucket wheel typetravelling Stacker-cum-Reclaimer suitable forstacking and reclaiming at a rated continuouscapacity of 2000/1800 Metric tonnes per hour(or above) for coal or other mineral ofequivalent volumetric capacity which

There is ambiguity in referred clauses for theprovenness criteria of stacker cum reclaimer.

should have been in successful operation for atleast three (3) years prior to the date ofTechno-Commercial bid opening.

Bidder will consider the provenness criteria for stackerreclaimer as per "attachment 3K clause B, page no 205of 322 of Volume-1".

In accordance with clause no. 4. 19.2 ofChapter 04, “Provenness” , Volume II, we havedesigned, manufactured, supplied, erected andcommissioned including all associatedstructural steel works and electrical works of atleast one (1) number cantilever boom type,slewable and luffable, bucket wheel typetravelling stackercum- reclaimer suitable forstacking and reclaiming at a rated continuouscapacity of 1000/1000 Metric Tonnes per hour(or above) for coal or other mineral ofequivalent volumetric capacity, which is insuccessful operation for atleasttwo (2) yearsas on date of Techno-commercial bid opening.

Kindly confirm.

205 of 322I Attachment-

3KB

II Provenness 15 of 40 4.19.4 Coal Sampling System: There is ambiguity in referred clauses for theprovenness criteria of Coal Sampling System.

3. 1 Refer clause 4.19.4

2. 1 Clause 4.19.2 shall prevail.




The Bidder/ its Sub-vendor shall source coalsampling system from a manufacturer/ supplier who has engineered and supplied minimumtwo (2) numbers of coal sampling systems forsampling coal /other bulk mineral fromconveyor of 1500 MTPH or above and whichshould have been in successful operation for atleast two (2) years prior to the date of Techno-Commercial bidopening. Bidder will consider the provenness criteria for Coal

Sampling System as per "Attachment 3K, page no 202of 322 of Volume-1".

In conformity with the requirements specifiedunder clause 4.19.4 Chapter 04, “Provenness”, Volume II of Coal Sampling system module,we have offered Coal Sampling System

Kindly confirm.

manufactured / supplied by M/s..................................... who has engineeredand supplied two (2) nos. of Coal Samplingsystems for sampling coal / other bulk mineralfrom conveyor of 1000 MTPH and above andworking successfully for two (2) years as ondate of Techno-Commercial bid opening.

202 of 322-

I Attachment- 3K

4.18.2 The systems mentioned at 4.18.2 (a) and (b)above should have been in successfuloperation in at least two (2) plants for two (2)years prior to the date of Techno- Commercialbid opening and should have been installed forpulverized coal fired boiler units generating notless than 40 TPH of ash per boiler.

In clause no 4.18.1 it is mentioned that An individualBoiler unit having its own independent Bottom AshHandling of either jet pump system type or ownindependent Fly Ash Handling system……can beconsidered for 1 Plant as reference. We hope above isalso applicable for clause no 4.18.2 (a) & (b).

An individual boiler unit having its ownindependent bottom ash handling system ofeither the jet pump system type can beconsidered as a plant for meeting therequirement of 4.18.1 (a) above.

Kindly confirm.

4. II 1 Provenness 13 of 40 Confirmed.




4.18.1

G3CH-4 Provenness 37 of 40 6.1 The Distributed Digital Control, Monitoring and

Information System (DDCMIS) supplier(s) ofSG C&I, TG C&I and BOP C&I, should haveengineered, supplied, and commissioned theirrespective sub-systems in at least one (1) unitof a power station having unit rating 500 MWor above.

In this regard we declare that we haveengineered, supplied and commissioned BOPC&I part of Distributed Digital Control,Monitoring & Information System (DDCMIS) inat least one (1) unit of a power station havingunit rating 200 MW or above, the details ofwhich are given below:

1.01.003K ATTACHMEN

T - 3K285 of 322

GENERAL1 II Bidder shall comply/submit the provenness document in

line with the clause mentioned in the attachment 3KClause 6.1 shall prevail of Chapter- 4 volume II.

Sl. No. Volume No. Section/ChapterNo. Clause no. Description as per tender

document Query OWNER'S Reply

1 Vol-VI Chapter :11 Clause No. 11.1.6 Fabrication Yard

As per prevailing practice , all steel structures including PH Structures , Coal bunker, Chimney flue liner etc shall be fabricated at site only to meet completion schedule matched with erection programme . Therfore customer to give necessary area for site fabrication yard from plant lay down area for the same. However necessary T&Ps as required for above shall be deployed by Bidder / its sub contractors to meet the project schedule Please confirm

The area available for the Project is already shown in the Plot Plan. Addl. Land if required by the bidder shall be arranged by him.

2 Vol-VI Clause no 2.8.4 (i)

"Realignment of Existing Budha Nallah"

Bidder requests Employer to exclude the complete design & diversion work of existing Budha nallah from bidder's scope as it calls for necessary clearance & direct involvement of various statutory bodies. Please confirm.

In Bidder's scope.

3 Vol- Vi Chapter 2 Clause no: 2.0 Scope of Civil & Structural work

Bidder's sunderstand that work like green belt devlopment /Hoticulture/ Rain water hervesting work etc. are excluded from bidder's scope . Please confirm.

Rain water harvesting is in bidder's scope of work.

4 Vol-1 Section -V SCC ,Cluase no36.00 Security watch & Lighting

we understand that overall watch & ward of project boundary , Gate control , deployment of CISF etc shall be in scope of customer. Kindly confirm.

Agree with Bidder comment.

H. SITE SPECIFIC

Please add following works and services free of any charges to the contractor under purchaser’s obligation :

a) a) All Statutory approval /certification, GRIHA certification etc. in the name of employer along with its fees /charges for site construction purpose, inspection fees, if any shall be in scope of customer. However, bidder will assist customer in obtaining those approvals/certification.

b) Issue of Form-V directly to the sub-contractors of forobtaining labour license.

c) Owner shall provide construction power @ 11 KV supplyfeeder (2 nos) (6 MVA) free of any charges inside project work area. Distribution of construction power network at site will be taken up by bidder.

d) Owner to provide one water supply point .each forconstruction purpose and drinking purpose inside project premises at free of any charges.

e) Owner to provide considerable space reasonably leveled,for material stock yard ( approx. 1.5 lakh Sq m), Site office & field hostels (800 Sqm.), fabrication yard( 25000 Sqm.), temporary site office, storage sheds( approx. 6500 Sqm.), and space for labour colony( for at least 3500 labours) inside project premises.

f) Special tools & tackles supplied along with plantequipment to be issued to bidder for erection purpose on returnable basis at the time of installation work. However they will be returned after completion of work. In case of any damage, the replenishment shall be arranged by the bidder.

g) De-electrification & removal of electrical poles / over headtransmission lines moving over the project area shall be in

Ok.

Ok.

As per SJVN condition.

Ok.


Ok.

5

Vol-II Chapter 6 ECC, clause no 27.00

Facilities to be provided by Employer

6 Vol-VI Chapter :11 Clause No. 11.1.3 Site Office for Employer

We understand that bidder to provide a temporary removable type office space(500 sqm) area with normal lighting arrangements, curtain, standard table & chair , window AC etc. for use of customer during construction work at site. However, Supply/installation of work station, PC, printer, VC equipment LAN/internet facility, telephone connection, all other office items & equipment, office consumables etc. and maintenance costs for the Offices and the installed Equipment, equipment with consumables, billing cost of telephone, telefax and internet browsing, Electricity bills etc. shall be in scope of customer etc. Please confirm.

As per SJVN terms condition.

Noted.

7 Vol-VI Chapter :11 Clause No. 11.1.7 Quality Control Lab

Bidder through its civil work subcontractors may set up a temporary civil quality control Lab with apparatus to carry out normal civil work tests at site. However, customer to allow bidder/it's subcontractors to take back that field quality lab equipment/apparatus after completion of work at site. please confirm.

Ok.

transmission lines moving over the project area shall be in scope of customer.

h) supply of start up power as per L1 network.

i) free Supply of Fuel Oil & coal till handover of unit is inscope of customer.

Ok.

Ok.

Ok.

8 Vol-I Section IV GCC ,Clauseno.37 Force Majeure

Stoppage of work at site arising out of uncongenial working environment (strike/movement etc.) must be included in list of force majeure situations. Kindly confirm


9 Vol-I Section IV GCC ,Clauseno.21.3 Transportation

1) Demurrage, warfage and other such charges claimed bythe transporter, railways etc. for reasons not attributable to the contractor, shall be on account of customer.

2) Mandatory & recommended spares shall be directlydispatched to the customer and same shall not be stored / handled by the bidder. please confirm

As per SJVN Terms condition.

10 Vol- VI Chapter 2 Clause no: 2.0 Scope of Civil & Structural work

1) Borrowed Earth required for land filling shall be arrangedfrom lay down areas inside plant boundary. Also customer to provide area for excavated earth in a lead of 1-2 km. within project boundary. Please confirm.

2) bidder presumes that land scaping/ green beltdevelopment / rain water harvesting etc. are excluded from bidder’s scope. Please confirm


Rain water harvesting in bidder's scope.

11Vol-I Section V SCC ,Clause

no.45 RoyaltyRoyalty / Cess/fees etc. on civil work, if applicable, shall be directly paid by customer to concerned authority. Same shall not be charged on bidder.

As per SJVN terms condition.

12 Vol-I Section IV GCC ,Clauseno.40

Extension of time for completion

Completion schedule shall be linked with receiving timely input/front from customer, wherever there is any interface between scope of customer and Scope of Bidder for Mechanical, Electrical and Other Areas of Erection. In case of any delay in receipt of input from customer with respect to what has been mutually agreed and approved by customer in L-1/L-2 network (to be finalized during pre-award discussion), completion schedule shall be extended & bidder shall be suitably compensated for the overrun expenditures during extended contract period.

As per GCC.

13

Vol-I Section-III

BDS , Clause no.3.5 Time schedule for SG &Aux (page no 43 of 63)

Temporary lift for boiler

we understand that one Temporary rack & pinion type construction lift per boiler will be installed for construction purpose & same shall be dismantled and taken back after completion of erection work. Customer to confirm.

Agreed.

14 Vol-I Section-V (SCC) 31.4.9 Safety“BHEL is corporate member of National safety council of India. hence separate registration for the awarded work with SCI Mumbai is not envisaged. customer to confirm.”

Agreed.

EPC PACKAGE FOR BUXAR THERMAL POWER PROJECT … THERMAL POWER PROJECT (2X660 MW) PRE BID...

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Transcript of EPC PACKAGE FOR BUXAR THERMAL POWER PROJECT … THERMAL POWER PROJECT (2X660 MW) PRE BID...