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TENDER DOCUMENTS

DAMODER VALLEY CORPORATION

KODERMA THERMAL POWER STATION

DIST: Koderma (Jharkhand)

Pin No.-825421

TENDER SPECIFICATIONS

FOR

OPERATIONAL SUPPORT, REPAIR & MAINTENANCE CONTRACT (MECHANICAL, ELECTRICAL AND

C&I) AND REMOVAL OF TECHNOLOGICAL WASTE AND UPKEEPMENT (HOUSEKEEPING) OF COAL

HANDLING PLANT, KTPS, DVC FOR ONE YEAR.
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INDEX

Annexure-I : Scope of Work

Annexure II : Qualifying Requirement

Annexure-III : Technical Terms and Conditions

Annexure-IV: Commercial Terms and Conditions

Annexure-V: Additional Terms and Conditions

Annexure-VI: General Instructions to Bidders

Annexure-VII: Safety Clause

Annexure A : No relation & No accommodation certificate

Annexure B : Format for BG in lieu ofEMD

Annexure C: Format for Bank Guarantee for security deposit for

100% payment.

Annexure D: DVCs Agreement Format.

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NOTICE INVITING TENDER

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DAMODAR VALLEY CORPORATIONKODERMA THERMAL POWER STATION

DIST: Koderma (Jharkhand)

Pin 825421Tel No: 06534-292156

NIT No. KT/SE(C&M)/13/22/150 Dt. 27/05/2013

OPEN TENDER NOTICE

THROUGH ETENDERING PROCESS ONLY

On line quotation in Two part are invited from Experienced Bidders (qualifying criteria for bidders are given

later) only by the Superintending Engineer(C & M), Damodar Valley Corporation, Koderma Thermal Power

Station, KOderma, Pin:- 825421 through e-tendering process for the under mentioned work

WORK OF OPERATIONAL SUPPORT ,REPAIR & MAINTENANCE,REMOVAL OF TECHNOLOGICAL WASTE AND

UP-KEEPMENT(HOUSEKEEPING) OF CHP,DVC,KTPS FOR ONE(01)YEAR .

For viewing detailed NIT, downloading tender documents and participating in electronic tenders, please visit

our website: www.tenderwizard.com/DVC

For viewing only detailed NIT and Qualifying Requirement, Bidders may also visit the website:www.dvcindia.org

OTHER RELEVANT INFORMATIONS:

Works Name WORK OF OPERATIONAL SUPPORT ,REPAIR & MAINTENANCE,

REMOVAL OF TECHNOLOGICAL WASTE AND

UP-KEEPMENT(HOUSEKEEPING) OF CHP,DVC,KTPS FOR ONE

(01)YEAR.

Contract Period For a period of 01(One)year with a provision of extension of one

year.

Estimated Value (in Rs.) Rs. 3,25,79,277/- (Rupees Three Crore Twenty Five Lakh SeventyNine Thousand Two Hundred and Seventy Seven) only for one

year

EMD in (Rs.) Rs. 6,51,586/- (Rupees Six Lakh Fifty One Thousand Five Hundred

and Eighty Six) only.

Cost of Tender Documents (in Rs.)

(Non-refundable)

Rs.3000/- (Rupees Three Thousand) only.

Date and time for online request for

tender document

From 5.00PM of 10/06/2013 to 3.00PM of 10/07/2013

Last date & time for Bid submission

( uploading)

Up to 16/07/2013 (UPTO 10:00 AM)

Date & time for Bid Opening At 16/07/2013 (after 10.30 Hrs )

Pre-Bid Conference 12/07/2013 (after 10.00AM)

Bidders are requested to register themselves for participating in Electronic Tenders.

For any query/clarification regarding NIT, following official may be contacted:

a. Shree R.K. Anubhawi, SE (C & M), Technical Section, KTPS, DVC, Koderma.
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b. Shree Chandan Kumar, AE(C&I),Technical Section KTPS,DVC

The following points may please be noted:

01. Submission/uploading of Tender:

Tenders will only be received in the website www.tenderwizard.com/DVC up to the due date & time for

submission (uploading) of tender. No hard copy of offer (except EMD and cost of tender document) will beentertained. The prospective vendors should download the tender documents from website

www.tenderwizard.com/DVC directly. Bidder shall have to submit the bid online in the website

www.tenderwizard.com/DVC before the due date and time of bid submission (uploading). All the scanned

copy of supporting documents as mentioned in NIT(I,e.Techno- Commercial offer ,Qualifying Requirements

and duly filled Techno-commercial deviation schedule ) are to be uploaded with the bid positively. Price bid

schedule and Techno commercial schedule provided in separate excel sheet should be filled (as per

instruction) and upload the same.

02. Cost of tender documents:

The cost of tender documents (non-refundable) and its details shall have to be indicated while filling-up the

tender documents form available in the websitewww.tenderwizard.com/DVC. The Bidder shall also have to

submit the cost of tender documents in hard Copy (The bidder shall scan the Demand Draft/Pay Order

and upload the same in the prescribed form in the .jpeg format in addition to sending the original Demand

Draft/Pay Order before the date and time of openings of the bids ) of requisite amount as mentioned above

in the form of DD / Bankers cheque in favour of Sr. Addl. Chief Accounts Officer, KTPS, DVC payable at SBI /

Bank of India, KTPP Branch, Banjhedih, Koderma, DVC in an envelope superscribing COST OF BID

DOCUMENTS to the office of SE(C & M), KTPS, DVC, Koderma.

03. Earnest Money Deposit:

Earnest Money for amount as mentioned above must be deposited at office of SE (C & M), KTPS, DVC,

KODERMA in HARD COPY before the due date and time of bid opening in any of the following

instruments (The bidder shall scan the EMD and upload the same in the prescribed form in the

.jpeg format in addition to sending the original before the date and time of openings of the bids):-

EMD can be submitted in the following form:

a) Pay Order or demand draft drawn in favour of Sr. Addl. Chief Accounts Officer, KTPS, DVC

payable at SBI/Bank of India, KTPP Branch, Banjhedih, Koderma.b) Bank Guarantee (B.G) from a Nationalized Bank/ Scheduled Bank /Foreign Bank, irrevocableand operative till the validity of the offer as per standard Performa .

c) Post Office National Saving Certificate having face value equal to the EMD value and dulyendorsed in favour of DVC.

d) Fixed Deposit Receipt issued by Nationalized Bank endorsed in favour of DVC.e) DVC Bonds duly endorsed in favour of DVC.

The offer accompanied by B.G against EMD will only be considered valid on acceptance of the Bank

Guarantee. The offer not accompanied by EMD or specified EMD in proper form as defined above shall

not be considered as valid tender for opening. COST OF TENDER DOCUMENTS, and BID
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SECURITY/EMD or NSIC CERTIFICATE (as applicable) should be sealed in an outer envelope super

scribing on it, the NIT No. and due date of opening should reach SE(C&M), KTPS,DVC office before due

date of bid opening.

DVC authorities will not take any responsibility to accept any documents which are received in this office

late due to postal delay or any other reason.

Note:

Earnest Money will only be refunded to the unsuccessful Tenderer (s) after finalization of Tender and nointerest will be paid thereon.

The amount of Earnest Money will be refunded to the successful tenderer, after acceptance of Security

Deposit- cum- Performance Bank Guarantee.

Small Scale Industries registered with NSIC shall be exempted from the payment of Tender Document fee

and the payment of Earnest Money. SSI Units seeking such exemption must upload scanned copies of valid

Registration certificate from appropriate Govt. authority giving details such as Validity, Stores etc. in the

website www.tenderwizard.com/DVC and also submit the hard copy of the uploaded documents in a

separate envelope super scribing NSIC CERTIFICATE to the office of SE (C&M), KTPS, DVC before the date

and time set for bid submission (uploading).

Money Order, Postal Order, Cheque or any other form of payment other than what is mentioned above,

shall not be accepted. Damodar Valley Corporation will not accept any liability for delay in receipt ornon-delivery of the same dispatched by post or through Courier.

04. All tenderers would be bound by the terms and conditions as detailed in tender specifications by the

DVC and GCC available in http://www.dvc.gov.in/GCC-2009.pdf

05. Scanned copies of the past performance/credential (Qualifying Requirement) must be uploaded in the

website along with tender. The Eligibility criteria for selection of bidders (Qualifying Requirement) have

detail been given in the NIT.

06. DVC reserves the right not to accept the lowest rate quoted by tenderer and reject any or all the tenders

without assigning any reason thereof if considered necessary.

07. On the due date of tender opening, first documents related to Cost of Tender and Earnest Money

(uploaded copy as well as hard copy) will be checked. Only after receipt of cost of tender and receipt

of requisite earnest money in proper form, the Techno-commercial Bid will be opened. The Price-Bid

of techno-commercially qualified bidders shall be opened online at a date which shall be notified later

online at www.tenderwizard.com/DVC. Bidders can view the Price bid opening date by logging in to

the website.

Note - Without hard copy of Tender document cost and EMD in proper form as defined above and

NSIC certificate (as applicable) no tender will be opened.

08. Downloading of the tender papers/documents shall not automatically imply qualification of the firm for

bidding , which shall be determined during bid evaluation.

09. All legal suits arising out of the enquiry and subsequent Letter of Intent/Work Order, if any, are subject to

jurisdiction in the Court of City of Kolkata in India and no other Court elsewhere.

10. Any addendum/corrigendum/extension, if required, pertaining to the NIT will be hoisted in DVC

website www.dvcindia.org and www.tenderwizard.com/DVC only and will not be published in

Newspaper again. Bidders are requested to visit DVC website regularly for anyaddendum/corrigendum/extension till opening of the said NIT.

Superintending Engineer (C & M)

KTPS, DVC, Koderma
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Copy to

1. The Director (Tech), DVC, DVC Towers, Kolkata-54

2. The Director (Proj), DVC, DVC Towers, Kolkata-54.

3. The Sr. Chief Engineer (Gen.), Maithon, DVC.

4. The Chief Engineer & Project Head, KTPS, DVC.

5. The Chief Engineer(O&M),KTPS,DVC.

6. The Chief Engineer (CSO), Maithon, DVC.

7. The Chief Materials Manager, DVC, DVC Towers, Kolkata-54

8. The Dy. Chief Engineer (M), KTPS, DVC(Shree S.K Ain).

9. The SE (M), KTPS, DVC.(Shree D. Sen)

10. The Superintending Engineer (Tech), BTPS-A, DVC.

11. The Superintending Engineer (Tech), BTPS-B, DVC.

12. The Superintending Engineer (Tech), CTPS U#1,2,3 , DVC.

13. The Superintending Engineer (Tech), CTPS U#7&8, DVC.

14. The Superintending Engineer (Tech), DTPS, DVC.

15. The Superintending Engineer (Tech), MTPS, DVC.

16. The Superintending Engineer (Tech), DSTPS, DVC.17. The Superintending Engineer (Tech), RTPS, DVC.

18. The Sr.Manager(Finance), KTPS, DVC.

19. The Chief Public Relations Officer, DVC, DVC Towers, Kolkata-54.

20. The Public information centre,(Manager SIP) KTPS,DVC,

21. The Resident Audit Officer, CTPS, DVC.

22. The Notice Board , KTPS, DVC.
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ANNEXURE ISCOPE OF WORK

DETAILED SCOPE OF WORKS AND SERVICES -

1.000 PART - A(A) Scope of Work for Operational Support, Annual Repair/Maintenance contract (Mechanical, Electrical

and C&I) and Removal of Technological waste and Upkeepment ( Housekeeping) of Coal Handling Plant,

KTPS, DVC, Koderma (JH) for one (01) year.

1.100. Mandatory jobs:

I) Mechanical Maintenance.

II) Electrical Maintenance including C&I System.

III) (a) Operation of Stacker-cum-Reclaimer(02 nos.), 4 nos. Paddle feeders, Wagon Tippler and side

Arm Charger of CHP of Units 1 & 2, operations & their allied system, operation of Conveyor Belts

and other associated equipments.

(b) Operation of Mobile Tripper Car of Bunker at both sides for U# 1 & 2 and also their allied

system, operation like Conveyor Belts etc, poking, breaking of lump size coal at track hopper etc.

IV) Maintenance of 2 Nos. stacker-cum-reclaimer along with its auxiliary system and associated

Rail Tracks as well as other associated system.

V) Operational support to run CHP system of Unit# 1&2.

1.200 Scope Of Operation (Mechanical):

1.201 The operation support means round the clock supervision / checking including Sundays and Holidays

during running of Stacker-cumReclaimer, Paddle Feeders operation, Running of Wagon Tippler,

running of conv. belts, Running of equipments in Crusher House, other TPs like TP-1, 2, 3, 4, 5, 6, 7, 8,

9, 10, 11 & 12, Compressor and Pump House, Travelling Tripper cars (Tripper Floors) operation

including its conveyer belts and other allied equipment.

1.202 For running of equipments, the firm will have to engage manpower round the clock including Sunday &

holidays as per instruction of Engineer-in-charge (CHP). The Firm will have to ensure that sufficient

manpower is engaged in each shift to run the equipments without any interruption. The personnel

engaged for operation must have operational experience of running such plants. During operation of

equipments, strict supervision should be made to avoid any major break down or untoward incident.

1.300 Scope of Maintenance(Mechanical):

1.301 The Maintenance contract would mainly comprise of Running /Routine Maintenance, Preventive

Maintenance and Break-down Maintenance of CHP including Overhauling and minor modification of

equipments as well as Maintenance of 02 Nos Stacker-cum Reclaimer along with its auxiliary system.

1.302 The firm must provide all necessary infrastructures for executing the details scope of work ofmaintenance of CHP so that the system will always be available for feeding coal to bunkers so as to

maintain unrestricted generation.

1.303 It is incumbent upon the firm to maintain close coordination with DVC s plant engineers for

maintenance activities of the equipments and system etc. as detailed in the subsequent paragraphs

and in the Annexure .

1.034 The firm is required to follow maintenance Program as per schedule framed by DVC or jointly.

1.305 The firm has to ensure the availability of stand-by equipment in good condition.

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1.306 The Firm will have to ensure that sufficient manpower (highly skilled / skilled / semi-skilled / unskilled)

is engaged round the clock including Sundays and Holidays for repair, preventative and breakdown

maintenance so that the CHP equipments can run effectively and smoothly. The firm has to provide

adequate technical back-up including periodical visit to the station by the Sr. Engineers of the firm for

ensuring smooth maintenance of the plant for perfect working of these systems. Sr. Engineers must

visit site before start of the work and frequency of subsequent visits to be decided mutually as per

requirement at site.1.307 The Firm has to maintain proper Register/ Record/ Log Book of the work/ service covered under the

contract.

1.308 A list of spares required for execution of contract is to be submitted to Engineer- in Charge time to time

before exhaust to take necessary procurement action by DVC.

1.309 The future requirement of general spares including insurance spares are to be assessed jointly by DVC

& the Firm so that effective utilization of the same is ensured.

1.400Running / Routine Maintenance(Mechanical):

1.401 Running / Routine Maintenance of all equipment connected with the station coal handling system

namely Track hoppers, Paddle feeder, Crusher House Equipments , wagon Tippler, Travelling Tripper

cars, Compressors, belt conveyor system, discharge and transfer hoppers and chutes, flap gates, Rack

and Pinion gates, Rod gates, Metal detectors, Inline Magnetic Separator, Suspended Magnet, belt

scale, track hopper& wagon tippler gratings , Reclaim hoppers and coal Bunker gratings, work related

to pent house , conveyor gallery, tunnel and walk ways, Air conditioning system, dust extraction, dust

suppression and ventilation system, Stacker-cum- Reclaimer No. 1&2, dewatering / sump pumps,

different type of pumps in the pump house and conveyor belts in CHP area.

1.402 To check, replace, refill oil, lubricants etc. greasing of bearings etc. of all the equipment of the coal

handling system including gear boxes, hydro coupling, gear couplings, hydraulic power packs etc. as

and when required as per direction of the concerned engineer. The application of grease as required

will be done by hand or grease gun.

1.403 Adjustment of conveyor belts for their proper and smooth running as per direction of concerned

engineer, if necessary; belt fastener are to be provided temporarily in conveyor belts as and when

required for feeding coal into the bunkers. Belt fasteners will be supplied by DVC free of cost.1.404 Opening and checking the condition of all crusher materials i.e. Ring Hammers, Centre disc, End disc,

suspension bars, shaft sleeves, Disc spacers, screw jack, crusher body along with bearing housing etc.

has to be done on regular interval. Necessary repair / replacement of deformed above items of plate/

replacement of broken/ worn out ring hammer as & when required along with replacement of

complete set of ring hammer greasing of crushers bearing on regular basis , adjustment of its sleeves,

nuts lock washers etc. as per direction of DVC Engineer-in- charge for smooth running of crusher

system.

1.405 Removal of all the technological wastes, cleaning of belt feeder drive and all the associated system of

dust / grease and checking of belt feeder drive in running condition prior to taking shut down of the

system for any trouble.

1.406 Opening and checking of roller screens, as required for smooth running of the roller screens.1.407 Regular monitoring of performance of air compressors, attending leakage from gaskets etc.

1.408 Replacement of all types of individual idler such as impact, troughing, return, self-aligning troughing

and return idlers etc., if required along with associated frames bolts, nuts etc. Repair of twisted idlers

frame and bracket if possible to reuse / welding of self-aligning idlers block, replacement of bearings

guide roller replacement and greasing etc. as per direction of DVC Engineer-in-charge.

1.409 Repair/ replacement time to time of belt scrapper, skirt board, rubbers, damaged rubbers of back side

of skirt board to prevent spillage of coal regular checking and repair/ replacement whenever essential

of deflector plate, liner plates & other components to be done immediately.

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1.410 Repair of damaged gratings at tripper floor, track hopper and wagon tippler along with replacement of

the same if necessary; fabricated gratings for replacement will be supplied by DVC free of cost, but

collection of the same from stores or site at KTPS and transportation to the work site will be under the

firms scope.

1.411 To ensure proper flow of coal through gratings of coal bunkers, Track hoppers and Wagon tippler and

removal of arching in any one bunkers as well as other hoppers for proper flow of coal to maintainsustained and reliable generation.

1.500 PRVENTIVE MAINTENANCE(Mechanical):

1.501 Conveyor Belt :

a) Single joining of belts by cold/ hot vulcanizing along with all associated job & patch repair to be

done as per requirement and direction of Engineer-in-Charge.

b) Double joining by additional length of healthy belt is within the scope of work. If required and to be

done after removing the damaged portion of that belt along with doing all associated jobs. No extra

payment will be done.

c) Patch repair of any portion of conveyor belt by cold vulcanizing/ belt fasteners to be done as per

instruction of DVC engineer-in-charge.

d) Restoration of snapped conveyor belt will have to be done by the firm as and when required after

fulfilling all associated jobs in a shortest time possible.

e) Replacement/ repair of all types of conveyor belts (up to 40 meters) at all areas are under the

scope of the Firm.

f) The Firm will have to arrange vulcanizing machine, kit and solution etc. during belt jointing.

1.502 Pulleys:

a) Pulleys are to be re-lagged, if the lagging are found worn out/ damaged by removing the adhesive,

sticking materials from the bare pulley shell.

b) Lagging materials (12mm thick) is to be supplied by the firm at their own cost as per specification &

make. Pulley lagging work has to be carried out in situ.

c) Bearing of different pulleys are to be inspected & adjusted / re-greased as required if required

bearings are to be replaced before they fail. The supply of bearing for the replacement etc will be

taken care by DVC.d) If the firm engages any external agencies for specialized jobs time to time like vulcanizing of

conveyor belts, lagging of pulleys etc. prior approval from DVC s competent authority has to be

obtained. No extra payment will be done.

1.503 Idlers:

a) Free rotation of roller without noise of different idlers such as troughing idler, return idler, self-

aligning troughing and return idlers, self cleaning return idlers, guide roller, impact idlers etc. have

to be ensured and corrective measure will be taken at the earliest. Damaged roller will be replaced

immediately. Rubber rings of impact idlers and self cleaning return idlers will be replaced if the

same is found in worn out/ damaged condition.

b) Spillage of coal due to belt sway or snap surrounding the idler frame shall be removed as and when

required for maintenance of the system. Side-guide-rollers have to be checked for free rotation andwear in case of self-aligning idlers.

c) Free movement of rollers on central pivot of self-aligning carrying and return idlers has to be

ensured.

d) If bearing lubrication is required, it has to be done in correct time and grade of lubricant as per

lubrication chart and manufacturers recommendation as per direction of Engineer-in-charge.

Bearing has to be replaced before they fail. Bearing surrounding to be always kept free of dust.

e) Rubber strips have to be checked visually at regular interval and worn-out strip has to be replaced

and to ensure proper movement of counter weight & arm.

1.504 Skirt Plate:

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a) The skirt sealing rubber strip to be inspected for its gap with the belts.

b) Worn-out rubber strip to be replaced.

c) At regular interval the skirt supporting bolts should be tightened as and when required and

adjustment of skirt through slot hole in the rubber to be done.

d) The sealing rubber at the back of skirt plate should be inspected and worn-out back guard to be

replaced as and when required.

1.505 Discharge Coal Chute:

a) Inspection of all clutches shall be done regularly after removal of coal dust etc. Worn-out/

eroded mother plates of chutes should be replaced or temporary patch repaired as per

instruction of Engineer-in-charge as and when required.

b) Accumulation of material on chute will be removed at regular interval.

c) Deflector plates to be checked in regular interval & eroded plates to be replaced as and when

required.

1.506 Flap Gate:

a) The gap between the flap gate and chute plates will be checked for its uniformity.

b) Proper positioning and operation of travel limit switches will be checked and rectified if found

faulty.

c) Electrical actuator, flap gate shaft bearing and electric actuator support brackets will be greased as

lubrication chart & proper operation to be ensured

d) Necessary repair/ replacement of its any part have to be done if required.

1.507 Rack & Pinion Gate and Rod Gate:

a) All components of rack & pinion gate and rod gate to be checked for its proper alignment and

trouble free operation, including greasing and replacement of bearing. Repair/ replacement work of

its any part, if found necessary, have to be done immediately.

b) Slide plate support rollers should be checked for its free rotation & if required, replacement to

be done.

1.508 Travelling Tripper Chute:

Chutes and liners should be checked at regular interval and worn-out/ damaged liners & mother plate

of the chute if necessary should be replaced. New liners, if required to be replaced with drilledcountersunk hole to be fabricated & drilled by the Firm, raw steel materials will be supplied by DVC

free of cost.

1.509 Travelling Tripper Cars:

a) The functioning of tripper cars should be checked regularly for its smooth running on the rails and

regular maintenance will have to be carried out to ensure proper functioning of its brake, drive unit,

cable trolley, bearing etc. regular greasing, lubrication of the accessories should be done as per the

manufacturers recommendation or as per direction of Engineer-in-charge.

b) Checking /replacement of gear box lube Oil, coupling bolts, bushes, solenoid assembly, brake shoe

etc. are to be done as per the manufacturers recommendation or as per direction of Engineer-in-

charge.

c) Any spares if required for the tripper cars for its repair/ replacement are to be done.1.510 Various Gear Units:

The quantity of oil in the gear unit should be inspected periodically and maintained strictly as per

the given normal oil level mark.

a) Checking of alignment to be done as per the manufacturers recommendation or instruction of

Engineer-in-charge.

b) Oil seals should be checked during the period of maintenance and in case of any oil leakage found

from that gear box, it will have to be rectified/ replaced immediately.

c) The hold back system, input shaft, output shaft, bearing, pinion etc. should have to be checked for

its proper functioning and any replacement if found necessary, has to be done.
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c) Checking / replacement of oil/ grease etc. of various drives as per recommendation of the

manufacturers or instruction ofEngineer-in-charge.

1.523 Wagon Tippler:

a) Removal of technology wastes from the paddle feeder cars and its auxiliary system to be done as

per direction of Engineer-in-charge.

b) Checking / replacement of oil/ grease etc. of various drives as per recommendation of the

manufacturers or instruction of Engineer-in-charge

c) Regular monitoring of various bearings of tippler drive, tippler clamp, arm hoist drive etc. and their

replacement before they fail.

1.524 Compressors:

a) Replacement of bearing, seal, bushes, motors etc. are to be done immediately as per direction of

Engineer-in charge.

b) Greasing of bearings as per requirement.

1.525Belt Weigher (Total 06 nos.):

Maintenance to be done as per DVC Engineer in Charge.

1.526 ThrustorBrake :

It is advisable to check periodically that the oil is full in the thrustor tank, as evaporation may take place

with a hard worked thrustor, if oil is not changed regularly sludge, water and acid may form due to

oxidation.

1.527 Elevators (Total 02 Nos.):

Regular checking of Elevators along with all components to be carried out Removal of Arehing of Coal

from bunkers of unit#1&2 along with loading/unloading of the same to stockpile of CHP,KTPS, DVC.

Poking may be done by entering the bunkers from the top with the Adequate Safety measure.

1.600. Removal of old and used unserviceable spares (ROM).

i. Replaced old and used unserviceable spares & scraps at C.H.P. area to be shifted from CHP area to

the store, KTPS with their own arrangement at no extra cost to DVC. Used old unserviceable

spares/ scraps shall be collected immediately from site and shall be kept at specified places for

further ROM. Old serviceable spares shall be collected from site immediately and shall be kept at

specified places for repair/maintenance of the same. All will be under scope of contractor. After

replacement of belts, old belts shall be brought to specified place on the same day.ii. New spares should be kept orderly at specified areas. No new spares should be noticed here and

there. Unused spares will be collected after completion of work and they will be kept at proper

place.

1.700. Various other activities:

a) Mobile Tripper Car Operation: Coal is to be fed in all the bunkers of running units as per direction of

In charge of PLC/Shift-in-charge & also have to take care of its allied system operation like Conveyor

Belts, Gear boxes, Mobile tripper Cars etc.

Necessary infrastructure/manning is to be provided in Paddle feeder, S&Rs, Mobile Tripper Cars

operation for running the system. However, it will depend on DVCs discretion to instruct the contractor

to engage the infrastructure in other areas of maintenance (Mech.) and it will be binding for contractor

to follow accordingly.b) Paddle feeder operation:

Coals are to be fed in the Conveyor belt 1A/B as per direction of In-charge of PLC/shift-in-charge by

controlling the speed of paddle feeder blades. To meet the Power House requirement, two (2) paddle

feeders on both the conveyor system 1A/B may be required to put into normal operation

simultaneously as per direction of In-Charge of PLC/Shift-In- Charge.

1.800 Operation & maintenance of Stacker cum Reclaimer (reversible type):

a. Operation of 02 Nos. Travelling Stacker-cum-Reclaimer in by pass mode, stacking mode, reclaiming

mode, long travel of S&R and slew operation of Boom Conveyor as per requirement to be done.
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areas, outside Track hoppers, discharge chute and MCC-1A & 1B.

ii)Zone-2:All area around Crusher house, its all floors , conv.2A/2B, TP-1

iii)Zone-3:All area around conv.10A/B, conv no. 11A/B, TP- 8 &TP-9,structure of Stacker cum Re-claimer 1&2,

MCC-1C and PLC Control room.

iv)Zone-4:All area around conv .belt no.12A/B from tail end to drive end, sump pump area including its pit and

drains, flap gate floor and bottom areas of TP-10 &11.

v)Zone-5: All floors of TP-2, TP-3 and MCC-1D ,all areas from tail end to drive end of conv.3A/B and conv.4A/B and all spillage coal from the said conv. Belts to the ground have to be cleaned. Cleaning of

Administrative building of CHP to be taken care of.

vi)Zone-6: All floorsofTP-4, TP-5, TP-6, TP-7 and tail end of conv. Belt no. 5A/B, 6 A/B & 7A/B & 8 A/B to

drive end, total bunker floor area including all tripper cars of unit # 1 & 2.

4.102. All technological waste i.e. coal dust, stone / boulders etc. generated in the above said zones are to

be removed on daily basis. All structural members of the above zones also have to be kept clean.

4.103 Urgent removal of coal from conveyor belts / system has to be done to facilitate maintenance work on

immediate basis, if occasion arises. The coal/waste thus accumulated by the side of the conveyor belt

system has to be cleaned either putting the same in to the system or by other means to a distant location as

per direction of the Engineer in charge of D.V.C.

4.104Boulders/stones/extraneous material accumulated on the ground under conveyor belts etc. are to

be removed on daily basis and stored in the place decided by Engineer-in-charge of DVC

for easy and smooth movement. Also the stone accumulated at the bunker floor of unit # 1 & 2

have to be removed on daily basis. Disposal & removal of such accumulated boulders/foreign

materials to be done to a distant place after weighment at the DVC weighbridge to a suitable place

(within a distance of 5-6 KM approximately)as per direction of DVC Engineer-in-charge.

4.105 The coal dust / technological waste, generated due to removal of chute jamming of conveyor belts,

Stacker-cum-Reclaimer, mobile Tripper car & crushers, etc. has to be removed immediately as and

when required for smooth and safe operation of the system.

4.106Materials/boulders/technological waste etc. accumulated inside the tripper chute should have to

be removed as and when required on priority basis for smooth maintenance and running of the

system.

4.107 Removal of technological waste from sump pits located in Track hopper, wagon tippler TP-10,11,12,drains connected to the pit set care to bed one for proper maintenance of all the Sump pumps for

smooth operation.

4.108 In case of emergent situation, the requirement of additional work has to be done by Firm(without any

extra cost to DVC)to restore normalcy of the system.

4.109 In the event of partial or full chocking of gratings in the bunker floor of running units, the

accumulated coal are to be removed immediately for smooth operation of tripper car for coal flow

to bunkers.

4.110 Deposit of coal/coal dust on the structural members, equipments are to be regularly removed.Structures, equipments should remain clean on day to day basis.

4.111 The Firm will have to engage sufficient numbers of tractors/trolley/Dumper/Truck for disposal of

the coal/ coal dust generated in CHP areas on daily basis to the designated place. The loading and

unloading of coal/coal dust will be done by the Firm. All tractors/trolley/Dumper/Truck deployed

by the Firm will first report to the designated Weighbridge of KTPS for recording tare weighment of

the vehicle at least once in a day. All tractors/trucks loaded with coal/coal dust will report to the

designated Weighbridge of KTPS for record of Gross weighment of the vehicle for each trip while

coal, coal dust are to be dumped back to the coal yard, stones and other non-coal matters like
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shales, boulders are to be dumped to suitable site as identified by SE(M)or his representative. The

Firm should not load coal/coal dust with boulder in the same tractors/trucks. Firm should deploy

separate tractors/trucks for coal and non-coalmatters.Net weight will be calculated by deducting

the recorded tare weight from the gross weight for each trip. The bidders are requested to quote

their price for loading, unloading and carrying per MT of coal/coal dust. The vehicle has to cover

approximately 05-06 kilometers in each to & fro trip. In actual the distance covered will be around

05-06 kilometers. Payment shall be made on the net quantity disposed per month.

A. LIST OF MAJOR EQUIPMENT/ SYSTEM OF COAL HANDLING PLANT OF KTPS UNDER THE FIRMS SCOPE

OF WORK.Track Hopper:

(A) RCC Track Hopper (Length - 250M with 2x15 two nos. maintenance hatch, width 11.55M), Capacity

5500MT

(B) Steel grating over hopper 350 MM X 350 MM Mesh

(C) Track Hopper Beams all sides (except bottom) and inclined portion of inner surface all through

lined with replaceable SAILHARD/ TISCRAL Plates.

(D)Concrete table top all through lined with 16 MM SAILHARD/TISCRAL Plates (removable).(E) Paddle Feeders 4 Nos. (each of Capacity 900 TPH Rated)

Wagon Tippler:

(A) Wagon Tippler Capacity: 24 Tips/Hr. (Design) & 20 Tips/Hr. (Rated), Platform length 17.35 M,

Maximum angle of rotation - 1550

(B) Side Arm Charger Hauling Capacity: 37.5 MT

(C) Apron Feeder- Capacity: 1300 TPH (Rated)

(D) inclined portion of inner surface all through lined with replaceable SAILHARD/ TISCRAL Plates

(E) Steel grating over hopper 350 MM X 350 MM Mesh

(F) Dribble Conveyor

Conveyor 1A & 1B: Size 1400mm inclined belts approximate length-1325M each. Suspended Magnet 2

nos, Metal Detector

2 nos, Belt Weigher -2 nos, ILMS-2 nos. complete with belting, idlers, pulleys,speed reducer, drives and motors, scoop couplings, tension devices, cleaning devices, pulleys and

coupling, gear box hold backs, transfer chutes and accessories for carrying coal of 250 mm and down lump

size from Track Hopper to Crusher House.

Crusher House:

Drive of conveyor 1A & 1B, Rod Gates- 4 nos, Rack and Pinion Gates- 4 nos,Crusher-4nos Capacity: 900 TPH,

Roller screen-4nos Capacity: 900 TPH, Belt feeder4nos, Dust extraction system, 2 nos Flap Gates for

discharging coal to conveyor 2A & 2B, Coal Sampling Unit, Electric Hoist.

Conveyor 9A & 9B: Size 1400mm inclined belts approximate length-160M each complete with belting,

idlers, pulleys, speed reducer, drives and motors, fluid couplings, tension devices, cleaning devices,

pulleys and coupling, hold backs, transfer chutes and accessories for carrying coal of 250 mm and downlump size from wagon tippler complex to TP-12.

Transfer Point-12: Drive of conveyor 9A & 9B, discharging coal to conveyor 1A & 1B respectively, Electric

Hoist, Dust Suppression System.

Conveyor 2A & 2B: Size 1400 mm inclined belts approximate length-284M with all usual accessories to

carry crushed coal of 20 mm and down up to transfer points discharging to conveyor belt no: 3A and 3B.

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Transfer Point-4: NoDrive, Flap gate 2 nos for discharging coal to conveyor 5A/5B and 7A. Dust

Suppression System, Electric Hoist.

Tripper Floor (RHS) of U#1: Drive of conveyor 7A, Travelling Tripper with Flap gate 2 nos for discharging

coal to conveyor Tripper Floor (RHS) of U#1. Dust Extraction System, Electric Hoist.

Transfer Point-5: Drive of conveyor 5A/5B, Flap gate 4 nos for discharging coal to conveyor 6A/6B and 7B.

Dust Suppression System, Electric Hoist.

Tripper Floor (LHS) of U#1: Drive of conveyor 7B, Travelling Tripper with Flap gate 2 nos for discharging

coal to conveyor Tripper Floor (LHS) of U#1. Dust Extraction System, Electric Hoist.

Conveyor 7A & 7B: Size 1400 mm inclined belts approximate length-171M with all usual accessories to carry

crushed coal of 20 mm and down up to transfer points discharging to coal bunkers.


crushed coal of 20 mm and down up to transfer points discharging to conveyor belt no: 8A/8B.

Transfer Point-6: No Drive, Flap gate

2 nos for discharging coal to conveyor 6A/6B and 8A. DustSuppression System, Electric Hoist.

Tripper Floor (RHS) of U#2: Drive of conveyor 8A, Travelling Tripper withFlap gate 2 nos for discharging

coal to conveyor Tripper Floor (RHS) of U#2. Dust Extraction System, Electric Hoist

Transfer Point-7: Drive of conveyor 6A/6B, for discharging coal to conveyor 8B. Dust Suppression System,

Electric Hoist.

Tripper Floor (LHS) of U#2: Drive of conveyor 8B, Travelling Tripper with Flap gate 2 nos for discharging

coal to conveyor Tripper Floor (LHS) of U#2. Dust Extraction System, Electric Hoist


crushed coal of 20 mm and down up to transfer points discharging to coal bunkers.

Transfer Points and Conveyor Gallery Structure: Structure, Structural steel construction etc. for conveyor

frames, head frames, stringers, hand rails, walk ways, safety guards, stairs etc.

Pumps:

Sl.no Name Number Capacity

(m3/hr)

Head (mwc) Motor Rating(KW)

1. Service water Pump 4 35 105/80 18.5/15

2. Cooling Water Pump 6 36/36/75 115/85/50 18.5/30/9.3

3. Portable Water Pump 2 8 110 7.5

4. Make-up- Water Pump 2 290 60 75

5. Stockpile dust Suppression

Pump

2 135 90 55

6. Paddle Feeder make-up

water Pump

2 8 65 9.3

7. Track Hopper Dust

Suppression Pump

2 35 75 18.5
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8. Wagon Tippler Dust

Suppression Pump

2 55 72 18.5

9. Paddle Feeder Dust

Suppression Pump

8 5 40 2.2

10. Dust Extraction Pump 4 40 65 15

11. Dry Type Fog Type Dust

Suppression Pump (PH-A)

2

Compressors:

Sl.no Name Number Capacity

(m3/hr)

Head (kg/cm2) Motor Rating(KW)

1. Service Air Compresor(PH-

A)

2 42.5 7 5.5

2. Dry Fog Type Dust

Suppression System(PH-A)

2 202 10 22

3. Dry Fog Type Dust

Suppression System(PH-B)

2 70.9 7 7.5

4. Service Air Compressor

(PH-B)

2 119 CFM 10 37

Air pollution control system:

a)Ventilation system VS-1 to VS-10, VE-1 to VE-23: Area- Track Hopper, tunnel- conv. 9A/B, 1A/B & 12A/B,

TP-10, Tp-11, TP-12

b)Dust extraction system- DEP-6A/6B, 6C/6D Area: Crusher House and Bunker floor

c)Dust suppression system- Area: TP-1,2,3,4,5,8,9,10,11 and 12.

LIST OF T&P ITEMS TO BE ARRANGED BY THE FIRM DURING EXECUTION OF THE WORK:

Adequate tools & tackles as per requirement have to be supplied by the Firm. The following Mech. Tools &Tackles are required for the Firm to start their job for Annual Maintenance Contract.

TOOLS & TACKLES required for CHP:

Sl.

No.

TOOLS & TACKLES Quantity

1. Lifting Equipment

a) Hydra 10T capacity

b) Winch M/C

i) Electrical Operated (a)5T

ii) Mechanically Operated (b) 3T

2 no

2 nos.

1 no.

2. Chain pulley Blocki) 3T Capacity (6m lift)

ii) 5T Capacity (---do---)

iii) 2T Capacity (---do---)

iv) 10T Capacity (---do---)

4 nos.

4 nos.

2 nos.

2 nos

3. Hydraulic Jack

i) 10T Capacity

ii) 35T Capacity

2 nos.

1 no.

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i) Double

ii) Single

2 nos.

2 nos.

14. a) Magnetic Drill M/C with different bits

b) Stand Drill M/C with different types of bits

2 nos

1 no.

15. Table vice/Bench Vice 1 no.

16. Hammers

i) Wooden Malletii) Copper Hammer

iii) Slage Hammer

3Kg

5kg

10kg.

2 nos.2 nos

2 nos

2 nos

2 nos.

2 nos

17. Cose Rope (Steel) of 16mm 200 mtrs

18. Allen key sets 2 mm to 20mm 2 sets

19. Dial gauge with magnetic base 4 nos.

20. Varner

i) 12

ii) 18

2 nos.

1 no.21. Micro meter

i) Outer side (50mm to 200mm)

ii) inner side (----do---)

1 no.

1 no.

22. Box spanner sets, D-spanner, different types of

files, filler gauge, centre punch, chisel, different

types pipe wrench, Sli wrench etc in sufficient

nos. to carry out day to day maintenance

activity must be procured by the Firm

1 set

23. Scaffolding Material As per requirement

24. Vulcanizing machine along with kit 1 nos.

Note: Any other tools / tackles required for smooth running / maintenance of plant issupposed to be included, as the above list is only indicative not exhaustive.

LIST OF T& P ITEMS TO BE ARRANGED BY THE CONTRACTOR DURING EXECUTION OF CLEANING WORK

Adequate tools & tackles as per requirement have to be supplied by the contractor.

TOOLS & TACKLES required for CHP

Sl. No. TOOLS & TACKLES Quantity1. i) Tractor with Trolley

ii) Pay loader

iii) JCB

iv)Mini pay loader/ Bob cat

Sufficient nos.

1 no.

1 no.

1 no.

2. Nylon Hose of requisite dia. with nozzle Sufficient nos.

.

3. Spade & shovel Sufficient nos.

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4. Broom Sufficient nos.

.

5. Markin cloth Sufficient quantities.

6. Wheelbarrow 20 nos.

7. Ladder Sufficient nos.

FACILITIES TO BE PROVIDED TO THE FIRM BY DVC

(i) Consumables like Lubrication, gaskets, gland packing, bolts, nuts, electric tape, cable gland etc.

and spares shall be supplied by DVC free of cost. Required Tools & Tackles will be on Firms

Scope.(ii) Electric power supply (415 volts) and water required for the work will be supplied free of cost

by DVC for the execution of the work at fixed location only from which additional distribution

can be arranged by the Firm.

(iii) Compressed air ( service air ) will be supplied free of cost at certain location only for the work

assistance.

(iv) Electrical Hoist facility will be provided by DVC free of charge for execution of the contract.

(v) Open space shall be provided at KTPS premises by DVC free of cost for the Firm to make his own

office, stores and Engineers room at their own cost.

(vi) Subject to availability internal telephone will be provided free of cost to the extent possible.

(vii) Subject to availability, facility to utilize DVCs workshop will be provide free for execution of

contract.

(viii) Medical facility as available shall be provided as per DVCs standard charges and norms.

(ix) The accommodation & transport facility to the staff & workers will have to be arranged by the

Firm at their own risk and cost.

Note: Presently DVC do not have facility stated above for Sl. No. (vi) (ix).
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SCOPE OF WORK UNDER ELECTRICAL SECTION OF CHP

Scope towards CHP Electrical Maintenance for Routine, Preventive&

Emergency Breakdown Maintenance

a) ROUTINE MAINTENANCE AND UP-KEEPMENT OF THE CHP SYSTEM

Routine maintenance of all the equipments of Coal Handling Plant will be carried out by the contractor at all

times of the day including Sundays and holidays by mobilizing sufficient manpower for the early restoration

of the equipments.

Detailed Scope:

1. The contactor has to prepare daily running maintenance work schedule as per direction of DVC

Engineers and arrange necessary work-permit in every morning and the contactor will carry out the

work in pre-defined timed manner

2. Daily routine checking the status of Transformers (Oil and Dry type), 3.3KV HT Board, 415V LT Boards

and its respective Relays, Indications etc., HT & LT Motors, battery system and all continuous running

electrical equipments. Also its record keeping as per direction of Engineer-in-charge.

3. Arranging the power blocking & restoration of power of the CHP equipments for work permit. Rack

in-rack out of HT/LT breaker/panel/modules etc. as per direction of Engineer-in-charge.

4. Cleaning, air blowing and tightness of all Electrical Equipments of CHP system; e.g. HT/ LT motors &its

associated feeders,PT cubicle, Field JBs, MLDB, WDB, LPs, Limit switches, Mobile Tripper, Paddle

feeders, Roller screens, Sump pumps, Flap gate, RPG, Inline magnetic separator, Metal detector,

Suspended magnet, Dust extraction system, Ventilation & exhaust fan, Dust suppression system, Coal

sampler, Water supply system, Scoop coupling system, Compressor, Pull cord, Belt sway switches,

Electric hoist, AC units, liftsetc.

5. Checking/ rectification of Electrical Control Circuit, local control station, remote control panel of all

the Conveyor belts, Mobile Tripper, Paddle feeders, Roller screens, Sump pumps, Flap gate, RPG,

Inline magnetic separator, Metal detector, Dust extraction system, Ventilation & exhaust fan, Dust

suppression system, Coal sampler, Water supply system, Scoop coupling system, Compressor, Pull

cord, Zero speed, Belt sway switches, Hooter system, Electric hoist, Brakes etc. including replacement

of spares.

6. Cleaning & Tightness of all the light fixtures.

7. Control and power circuit modification with tit bit laying& termination of power cables, its

connection & tightnessmay be required and the same may be incorporated in consultation with

Engineer-in-Charge.
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8. Cleaning and removal of technical waste from different electrical panels and its associated floor &

room, different drives, cable gallery and trench etc. on regular basis.

9. Cleaning & Tightnessof 220 V Battery charger and Battery cell and measurement of the various

parameters periodically as directed by DVC Engineers.

10.Availability of all the running feeders thought out the period and if required replacement of faultymodule with healthy module, with changing of few components as Fuses, O/L Relays, Contactors etc.

11.Preventive maintenance of LT drives below 15 KW & its feeder is to be carried out as and when

required.

12.The party must have Electricity driven water extraction pump set to pump out any logged water in

MCC, Pump House or any water logged area in CHP.

13.The site-in-charge/supervisor will consult DVC Engineers all the time-till job is complete. DVC will not

bear any extra cost if extra time is required for completion of job

14.The contractor has to provide full maintenance support as per the requirement.

15.The contractor has to give assistance by providing skilled / unskilled manpower, tools, test equipment

etc. for the Experts, CTC team etc. which DVC may engage time to time as per requirement

16.Any type of scrap generated during execution of work will be shifted to disposal yard as per direction

of Engineer-in charge.

17.The contractor has to collect the material from main store / site store as per requirement vice-versa.

18.The contractor has to maintain the Daily Maintenance Job Register.

The work which has not been covered above but is to be carried out for normalization and smooth

running of CHP is to be done by the Contractor as per direction of Engineer-in-charge.

b) OPERATIONAL SUPPORT

Round the clock availability of sufficient experienced manpower at MCC 1B Control Room, MCC 1C

Control Room and Lifts at Crusher House & TP#3. The shift personnel will attend the day to day shift

operational work e.g. log book, data collection of different electrical equipments and other tit-bit

maintenance work including replacement of tit bit damaged parts of the equipments, for smooth

running of the CHP system.

The lift operator will also maintain the lift condition with the help of routine personnels.

Break Down of any System: Major Breakdown of electrical equipment in Coal Handling Plant is to be

attended on immediate basis round-the-clock and on emergency basis as per the requirement.

However, minor breakdown will be attended by shift persons.

Routine maintenance & breakdown maintenance will be carried out with General shift

persons.
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c) Preventive Maintenance

Preventive maintenance and up-keepment of the electrical drive of all conveyor belts, crusher motor, stacker

cum re-claimer, mobile tippers, paddle feeder, roller screen, sump pumps, flap gate, RPG, Inline magnetic

separator, suspended magnet, dust extraction system, ventilation & exhaust fan, dust suppression system,

HT & LT breaker, MCC module, pull cord, Belt sway switch, metal detector, Hooter, Hoist, battery & its

charger, etc. A list of job is mentioned hereunder, which is indicative but not exhaustive; the firm has to carry

out all the job during preventive maintenance for up-keepment of the equipment.

1) HT Drives & its associated feeder breakers, panels etc: -

i) HT drives

1. Cleaning the motor body by scratching dust layer over the motor.

2. Blowing out the dust layer over the motor body and cleaning the cooling duct.

3. Opening the Terminal Box and checking Terminal tightness. Cleaning and replacement of lug & motor

stud, if required

4. Taking IR value of the motor/ winding resistance and recording the same.

5. Replacement of Terminal Box gasket, if required.

6. Complete sealing of the Terminal Box to prevent dust ingress inside the motor.

7. Greasing of the motor bearing, if required.

8. Cable gland re-fixing.

9. Opening and closing the Canopy for above work.

10.Checking & rectification Space heater.

11.Checking & rectification of LPBS etc.

ii) HT Breaker: -

1. Rack in /Rack out of the breaker.

2. Thorough inspection and cleaning of coal dust by air blower.

3. Cleaning of breaker power contact and applying of petroleum jelly.

4. Checking of vacuum chamber, limit switch, indicators, door interlock etc.

5. Checking of closing/tripping ckt. and replacement of any defective components

6. Replacement of lugs, if found heated/ damaged.

7. Checking of indication lamp/push button/other components and replacement of damaged one.

8. Tightness checking of power/control cable terminals.

9. Tightness checking and greasing/ lubricating.

10.Measurement of contact resistance, if required.

11.Replacement of moving and fixed contacts, if required.

12.Checking the breaker operation in test position both manually and electrically.
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2) LT Drives(above 15 KW) & its associated feeders: -

i) LT Drives:

1. Cleaning the motor body by scratching dust layer over the motor

2. Blowing out the dust layer over the motor body and cleaning the cooling duct.3. Opening the Terminal Box and checking Terminal tightness. Cleaning and replacement of lug & motor

stud, if required

4. Taking IR value of the motor/ winding resistance and recording the same.

5. Replacement of Terminal Box gasket, if required.

6. Complete sealing of the Terminal Box to prevent dust ingress inside the motor.

7. Greasing of the motor bearing, if required.

8. Cable gland re-fixing.

9. Opening and closing the Canopy for above work.

10.Checking & rectification Space heater.

11.Checking & rectification of LPBS etc

ii) LT feeders: -

1. Rack in /Rack out of the breaker.

2. Thorough inspection and cleaning of coal dust by air blower.

3. Cleaning of breaker power contact.

4. Checking of vacuum chamber, limit switch, indicators, counters etc.

5. Checking of closing/tripping ckt. and replacement of defective components

6. Tightness checking and greasing/ lubricating.


8. Checking of indication lamp/push button/other components and replacement of damaged one.


10.Measurement of contact resistance, if required.

11.Replacement of moving and fixed contacts, if required.

12.Checking the breaker operation in test position both manually and electrically.

3) Distribution Transformers 3.3KV/415V & its associated breakers and panels:-

1. Cleaning of Transformer body & corresponding yard.

2. Cleaning &Tightness checking of terminals inside bus duct and HT/LT chambers.

3. Checking of Oil level and topping oil, if required.

4. Silica gel replacement, if required

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7. Checking of indication lamp/push button/ element/ other components and replacement of damaged

one.

8. Checking/ rectification of control and power ckt. Interlock checking.

9. Checking & ensuring proper operation of PCRD & CCRD.

10.Cleaning of coal dust & terminal tightness of all the installed motors.11.Cleaning and terminal tightness of all the heavy duty switches/limit switches installed and its

replacement, if necessary.

12.Cleaning of all the PJB, LBS LDB etc for coal dust.

13.Cleaning of the lighting fixtures.

14.Cleaning of Split ACs installed in E House & Operator cabin.

15.Checking operation of Stacker cum reclaimer.

Maintenance of VVVF drives:

1. Cleaning of panels. Replacement of panel gaskets. Checking of indication lamp/push button/

element/ other components and replacement of damaged one.

2. Replacement of the parts/equipments as per system requirement(material will be supplied by DVC)

3. Terminal tightness checking in the drive panel

4. Adjustment of settings of the drive as per requirement.

3) Wagon Tippler & its Side Arm Charger

LT Drives and Electrical MCC of Wagon Tippler & Side Arm Charger:

1. Opening the panel cover and checking gasket and replacement, if required.

2. Checking the cover fasteners and providing missing fasteners.

3. Removal of coal dust from the panel by using air blower/vacuum cleaner and dry brushes.



6. Cleaning and checking of power contactors, relay, fuse etc. and replacement of damaged parts, if any.

7. Checking of indication lamp/push button/ other components and replacement of damaged one.

8. Cleaning and checking of overload relay and other relays.9. Checking/ rectification of control and power ckt. Interlock checking.

10.Checking & ensuring proper operation of Festoon trolley for Side Arm Charger.

11.Cleaning of coal dust& terminal tightness of the all installed motor body .

12.Cleaning and terminal tightness of all the heavy duty switches/limit switches installed and its replacement,

if necessary.

13.Cleaning of coal dust & terminal tightness of all the PJB LDB, etc

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14.Cleaning of the lighting fixtures.

15.Checking operation of Wagon Tippler & its Side Arm Charger.

4) Minor Overhauling of Transformers

Proper isolation of the service breaker from OBB/OBD HT Switchgear at 3.3mtr in IPH

Opening of Primary & secondary terminal box. Checking for the damaged gaskets & packing on the box (& changing if required, gaskets to be

provided by DVC)

Tightness of all the Cable terminals at primary & bus bar terminals at secondary (with torque

wrench).

Tightness of the neutral link & measurement of earth resistance.

Measurement of the resistance through NGR & its Copper cable tightness (wherever applicable).

Arresting the Oil leakage if observed any from the Valves, Radiators etc

Changing the valves gaskets if required. (Gaskets to be provided by DVC).

Assurance of proper oil level in Conservator tank & top-up if required.

Proper heating of Silica gel breathers and its up-keeping.

Measurement of BDV value of the transformer Oil.

Measurement of the winding resistance of the Transformer winding.

Measurement of IR value of the incoming power cables & Bus ducts.

Tightness & cleaning of the terminals at Marshelling box.

Thorough cleaning of Transformer tank & auxiliaries and removal of foreign grasses inside the

transformer yard.

Thorough tightness of all the terminals & application of recommended gels at the terminals.

Assembling of the Terminal box covers at primary & secondary sides.

Painting of the tank (if required).

Measurement of IR value of the whole connected system.

Assuring the healthiness of the Transformer & its charging.

5) Overhauling of ILMS/Suspended Magnets and its associated panels.

Scope of work: -

Cleaning of local/MCC panel.

Disconnection of cable from magnetic coil.

Opening of cover of magnetic box.

Removal of magnetic coil.

Checking of magnetic core and coil.
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Cleaning of coil.

Varnishing of coil and heating.

Checking resistance & inductance of the coil.

Mounting of coil in the box and their connection.

Checking and replacement of defective component of the panel.6) Overhauling of HT/LT Panels (Half part of each MCC as one unit basis)

a) Opening the panel cover and checking gasket and replacement, if required.

b) Checking the cover fasteners and providing missing fasteners.

c) Removal of coal dust from the panel by using air blower/vacuum cleaner and dry brushes.

d) Tightness checking of power/control cable terminals.

e) Replacement of lugs, if found heated/ damaged.

f) Cleaning of power contactors and replacement of damaged parts, if any.

g) Checking of indication lamp/push button/ element/ other components and replacement of damaged

one.

h) Cleaning and checking of overload relay and other relays.

i) Cleaning and checking of lockout switchbox replacement of any component if required.

j) Checking/ rectification of control and power ckt. Interlock checking.

k) Checking/rectification of 3.3KV/415V bus bar, support insulators, Bus P.T., Line PT, Lightning arrestor

and associated panels including checking/ rectification of control circuit and replacement of any

defective component.

e) Some Other Important Jobs: -

1) Replacement/Dismantling of local push buttons (LPBS)/ Exhaust fan starter/ Heavy Duty Switches/

Limit Switches/Pull Cord/ Belt Sway switches/ Multifunction meter, Relay in 3.3 kV/415V breaker

panel etc. (each unit basis)

2) ILLUMINATION: -

1. Maintenance of MLDB/WDB

a) Cleaning & terminal tightness of all parts

b) Checking & rectification of transformer & circuitc) Replacement of damaged parts, if any.

2. Maintenance of Lighting panels/ACDB/DCDB/DCFB

a) Cleaning & terminal tightness of all parts

b) Checking & rectification of faulty circuit

c) Replacement of damaged parts, if any.

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3. Checking of light fittings & Replacement of fused lamps (HPSV, fluorescent tube, GLS, CFL); Burnt

ignitor; Defective holder; Ballast/choke etc as per requirement. (each light fitting basis): Light fittings

are to be taken out from place and is to be installed after replacement of the faulty items.

a) At normal Height: -

b) At above normal Height:-4. Checking of light fittings & Replacement of complete fittings (HPSV, fluorescent tube, GLS, CFL) as per

requirement. Light fittings are to be taken out from place and is to be installed after replacement of

the faulty items.

a) At normal Height: -

b) At above normal Height:

5. Attending of lighting breakdown(each occasion basis)

a) Checking & rectification of faulty circuit

b) Replacement of wire & damaged parts, as per requirement

6. New Power Point wiring of plug and socket point/fixing of MCBS and connection of power

supply.(each occasion basis)

7. Provision of connections and disconnection for welding machines, board fitting, temporary lighting

for maintenance.(each occasion basis)

f) Typical job:

1) Overhauling of LT motor including Shifting from motor base to overhauling site (adjacent to the

motor base at same floor) and restoring back after overhaul.

Disconnection of power cable from the motor and opening of base bolt of the motor.

Lifting and handling for shifting of motor to suitable location at the same floor for overhauling.

Dismantling of motor and removal of rotor from stator.

Thorough cleaning of motor cooling ducts, stator core, winding etc.

Varnishing of the rotor and stator and their dry out.

Removal of old grease from the bearing and replacement with fresh grease.

Replacement of bearing, if defective.

Assembling of the motor and measurement of IR.

Painting of the motor.

Shifting and positioning the motor on its base after overhauling & tightness of foundation bolt.

Connection of power cable and space heater cable

2) Replacement of burnt LT motor by spare one.

Disconnection of power cable of burnt motor and opening of base bolt of the motor.

Shifting of burnt motor as per directed location.

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Transportation of spare motor from store to work site.

Lifting & shifting of spare motor up to motor base.

Tightness of base bolt of the motor.

Connection of power cable and space heater cable.

Checking Megger and winding resistance & inductance of the motor, as per requirement. Free run of the motor.

3) Overhauling of 3.3 KV HT motor (230 KW to 595 KW) including Shifting from motor base to

overhauling site and restoring back after overhaul.

Disconnection of power cable from the motor and opening of base bolt of the motor.

Lifting and handling for shifting of motor to suitable location at the same floor for overhauling.

Dismantling of motor and removal of rotor from stator.

Thorough cleaning of motor cooling ducts, stator core, winding etc.

Varnishing of the rotor and stator and their dry out.

Removal of old grease from the bearing and replacement with fresh grease.

Replacement of bearing, if defective.

Assembling of the motor and measurement of IR.

Painting of the motor.

Shifting and positioning the motor on its base after overhauling & tightness of foundation bolt.


4) Replacement of burnt 3.3 KV HT motor (230 KW to 595 KW) by spare one.

Disconnection of power cable of burnt motor and opening of base bolt of the motor.

Shifting of burnt motor as per direction of Engineer-in-charge.

Transportation of spare motor from store to work site.

Lifting & shifting of spare motor up to motor base.

Tightness of base bolt of the motor.


Checking Megger and winding resistance& inductance of the motor

Free run of the motor.

g) Provision of OEM / other Experts services: - If it is felt that the contractor is unable to rectify the

troubles of the equipment under their scope or it is felt to have services of specialist during

overhauling, DVC may instruct the contractor to arrange for services of OEM Expert/other Expert as

per requirement. (per occasion basis)

h) Nomenclature of equipment/panels by paint: As per site requirement the nomenclature of

equipment/panels etc by paint (per letter basis). Size of the letter will be decided as per site

requirement. All the materials will be supplied by the firm.

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i) Laying & termination of cable: Laying & termination of different sizes power cable & control cable.

Luggs, Glands, Termination kit & jointing kit etc as per requirement (for execution of the said job) will

be arranged by the firm. The cost will be reimbursed at actual against documentary evidence. The

group of cable size furnished as below.

j) Dismantling of Cable: Dismantling of different size power cable& control cable. The group of cable

size furnished as below.

Exclusions from work:

The following jobs are excluded from the scope of work:-

a. Rewinding and major repairing work of LT/HT motors, valve solenoids etc.

b. Rewinding and major repairing work of distribution transformers.

c. Repairing of relays.

d. Major repairing work of batteries.

e. Major machining work

Completion period of each category job:

Sl. No. Job Category Completion

period

1 Preventive maintenance of each specified equipments One day

2 Overhauling cum preventive maintenance of each specified

equipments

One day

3 Overhauling of HT motors Seven days

4 Overhauling of LT motors Three days

5 Replacement of HT motors Two days

6 Replacement of LT motors One day

7 Maintenance of Lighting work One day

8 Laying & termination of power cable (per 100 meters) One day

9 Laying & termination of control cable (per 100 meters) 04 Hrs

Other job, which is not specified above will be firmed up by the Engineer-in-charge as per the

situation.

List of Major Electrical Equipment and installation:

The list of the electrical equipment and installations mentioned below is not exhaustive but tentative only;

for the purpose of assessment of involvement of work. Apart from these, any electrical equipment that will

be taken in to the ambit of CHP Electrical Maintenance wing shall be under the scope of this comprehensive

Annual Maintenance Contract:

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MCC-1A

1) 11/0.433KV, 2000KVA Transformers - 03 nos.

2) LT MCC - capacity 3200 Amp.( of 35 cubicles having 285 feeders) 1 no.

3) 220V DCDB 1 no.

4) DCFB 2 no.

5) ACDB 2 no.

6) MLDB 2 no.

7) WDB 2 no.

8) Solenoid DB 1 no.

9) 220V Battery Charger 2 no.

10) 220 Volt DC Battery Bank comprising of 119 no. cells 2 no.

11) SM Panel -2 no.

12) ILMS Panel 2 no.

13) Brake Panel 2 no.

14) VFD Panel 1 no.

15) All cables in the Cable Vault.

16) Ducting of pressurized Air System along with Air Handling Blower 01 set (Ventilation system)

MCC-1B

1) LT MCC capacity 1000 Amp (of 10 cubicles having 72 feeders)- 1 no.

2) ACDB 2 no.

3) MLDB 1 no.

4) WDB 1 no.

5) DCFB - 2 no.

6) Solenoid DB 1 no.



MCC-1C

1) 3.3KV HT Board capacity 1500 Amp comprising of 31 nos. panels - 1 no.( with 2 nos earth truck).

3) LT MCC capacity 1600 Amp ( of 13 cubicles having 121 feeders)- 1 no.

4) ACDB2 no.

5) MLDB 2 no.

6) DCFB - 2 no

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7) Suspended Magnet Panel- 2 no

8) Solenoid DB

9) Vibration Monitoring Panel 1no

10) Oil Type Transformer 11/0.433KV, 1000 KVA capacity 2 nos.

11) Oil Type Transformer 11/3.3KV, 7500KVA capacity - 2 nos.



MCC-1D

1) LT MCC capacity 2500 Amp ( of 24 cubicles having 225 feeders)- 1 no.

2) ACDB Board 2 no.

3) MLDB Board 1 no.

4) WDB 2no

5) Solenoid DB 1no

6) DCFB - 2 no.

7) Brake Panel 2 no.

8) VFD Panel -1no.

9) Oil Type Transformer 11/0.433KV, 1600 KVA capacity 2 nos.



TRACK HOPPER

1) Paddle Feeder Control Panel 4nos

2) Sump Pump Panels 8nos

3) Electric Hoist 6nos

4) Brake for LT drive

WAGON TIPPLER

1) Wagon Tippler Power pack motor (Drive) (110KW) 1no

2) Wagon Tippler Power pack motor (Clamping) (37KW)

1no

3) Side Arm Charger Power pack (Drive) (132KW) 1no.

4) Charger power pack Cooler motor (0.55KW) 1no

5) Integral Weigh Bridge1no

6) Apron Feeder (110KW) 1no.

7) Dribble Conveyor (9.3KW) 1no
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8) Electric Hoist 2no.

9) Sump Pump (15KW) 2nos

10)Flap Gate FG-31 1no

CRUSHER HOUSE

1) Ring Granulator Motor (405KW) 4nos

2) Actuator for Fluid Coupling Conveyor 1A/B (1.1KW) 2nos

3) Coupling Cooling Oil Circulating pump for 1A/B (2.2KW) 2nos

4) ILMS 2nos

5) Electric Hoist for ILMS2nos

6) Rack Pinion Gate 4nos

7) Roller Screen Motor 4nos

8) Electric Hoist for Roller Screen2nos

9) Actuator for Fluid Coupling Crusher (2.2KW) 4nos

10)Electric Hoist for Ring Granulator 2nos

11)Electric Hoist for Conveyor 1A/B 2nos

12)Electric Hoist for Belt Feeder 4nos

13)Electric Hoist for Tail Pulley 1nos

14)Elevator 1nos

15)Coal Sampling Unit 2nos

(a) Primary Cutter (18.5KW) 2nos

(b) Belt Feeder (reversible) (2.2KW) 1no

(c) Crusher (30KW) 1no

(d) Secondary Sampler (0.37KW) 1no

(e) Screw Feeder (2.2KW) 1no

(f) Sample reject Screw Feeder (slide gate) (0.18KW) 2nos

(g) Rotary sample collector (0.37KW) 1no

16)Hydraulic power for Door opening mechanism of Crusher (5.5KW) 4nos

17)Belt Feeder (30KW) 4nos

18)Flap Gates 2nos

MOBILE TIPPER

1) Tripper Car along with CJB/PJB, Flexible cable etc. 2 nos. with panels & motors.

2) LT Conveyor Motor - 415 Volt, 132KW, 1485 rpm, 3-phase - 2 nos.

3) General Lighting in conveyor & bunker floors.
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5) Metal Detector 2nos

6) Electric Hoist for Metal Detector 2nos

7) General Lighting for entire Conveyor.

CONVEYOR 2A/B

1) At TP-1: 415 Volt, 160KW, 1485 rpm ,3-phase Conveyor Motor -2 nos.

2) General Lighting entire conveyor.

CONVEYOR 3A/B

1) At TP-2: 3.3 KV, 230KW, 1484rpm ,3-phase Conveyor Motor -2 nos.


CONVEYOR 4A/B

1) At TP-3: 3.3 KV, 595KW, 1490 rpm ,3-phase Conveyor Motor -2 nos.


CONVEYOR 5A/B

1) At TP-5: 3.3KV, 230KW, 1484 rpm ,3-phase Conveyor Motor -2 nos.


CONVEYOR 6A/B

1)At TP-7: 415 Volt, 132KW, 1450 rpm ,3-phase Conveyor Motor -2 nos.


CONVEYOR 7A & 7B

1)At Bunker Floors: 415 Volt, 132KW, 1450 rpm ,3-phase Conveyor Motor -2 nos.


CONVEYOR 8A & 8B

1)At Bunker Floors: 415 Volt, 132KW, 1450 rpm ,3-phase Conveyor Motor -2 nos.


CONVEYOR 9A/B

1) At TP-12: 415 Volt, 132KW, 1485 rpm ,3-phase Conveyor Motor -2 nos.

2 General Lighting entire conveyor.

CONVEYOR 10A/B

1) At TP-9: 3.3KV, 230KW, 1484rpm ,3-phase Conveyor Motor -2 nos.

2) General Lighting entire conveyor.CONVEYOR 11A & 11B

1) At TP-10 &11: 3.3KV, 230KW, 1484 rpm ,3-phase Conveyor Motor -2 nos.

CONVEYOR 12A/B

1) At TP-2: 3.3KV, 230KW, 1484 rpm ,3-phase Conveyor Motor -2 nos.

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