Purchase Order No: 05855010(12) Dated: 14.04.2015 M/s Bengal ...

Purchase Order No: 05855010(12) Dated: 14.04.2015

M/s Bengal Tools Ltd.

ECL Page 1

EASTERN COALFIELDS LTD. ( A Subsidiary of Coal India Limited)

Chairman-Cum-Managing Director’s Office,

Materials Management Department,

Sanctoria, P.O. Dishergarh -713 333, Dist-Burdwan (W.B.), India

Phone No. 0341-2523606 & FAX 0341-2522061 / 2520459

E-mail:[email protected] .CIN-010101WB1975GOI030295

Purchase Order No: 05855010 (12) Dated: 14.04.2015

M/s Bengal Tools Ltd., Phone no: 033-25502487

2- Jessore Road, Kolkata-700028 E-id: [email protected] (Please quote Purchase Order No. & Date in all your correspondence)

Type of Tender : Domestic Open tender

Whether Govt. /PSU/ Private : Private

Whether MSE/Ancillary : MSE-NSIC registered

Dear Sir,

Sub: Supply of 1400 mm wide, U.G. Belt conveyor complete with FLP Electrical

Ref: 1) Tender no. ECL/PUR/E/ 05/ 51411071/ 1400MM & 800MM Belt Conveyor /099

Dated: 21.08.2014, opened on 26.09.2014 (offline) and 27.09.2014 (online)

2) Your Offer No. BTL/MHD-1987-TF_EMD/14/4656 dated 15.09.2014, online offer

against E-tendering and all subsequent letters & mails

With reference to the above, we are pleased to place order on you for supply of following items

as per prices, specifications, terms and conditions indicated here in under including Technical

specification at Annexure- X and also “General Terms & conditions of supply of Stores”

attached as Enclosure-6 of the NIT:

01. Scope of supply:

Sl

Item description

Qty

(sets) Price element

Order price

(Rs.)

1

1400 mm wide, 1200 TPH,

700 Mtr Length, 150 Mtr

Lift, UG Belt Conveyor

complete with 6.6 KV FLP

Electricals, suitable for PVC

Belting

[Material code: 13751202]

1 Basic price 2,15,00,000.00

ED @ 12.50% 26,87,500.00

VAT @ 5.00% 12,09,375.00

P&F 0.00

Freight 2,35,000.00

Transit Ins 0.00

Other charges 0.00

Total 2,56,31,875.00

Total order value: Rs. 2,56,31,875.00 (Rupees Two Crore Fifty Six Lakhs Thirty One

Thousand Eight Hundred and Seventy Five) only.

Brand Name/Model : BTL

02. Price: The above prices are on F.O.R. Destination basis and shall remain FIRM till

completion of supply.



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03. Excise Duty & Educational Cess: Shall be payable at actuals as legally liable at the time of

supply against submission of documentary evidence within the scheduled delivery period.

Current rate is 12.50% (including Educational Cess & Higher Education Cess).

Refund/credit, if any, obtained shall be passed on to ECL, which shall be certified by your

auditor. However, in case of decrease in Excise Duty within and beyond the original delivery

period, the same will be applicable.

04. Sales Tax: VAT shall be payable at the rate of 5%. Any increase in VAT within the original

delivery period may be considered on the basis of merit after receipt of request from you

with supporting documents. However, in case of decrease in VAT within and beyond the

original delivery period, the same will be applicable.

05. Packing and Forwarding charges: Nil

06. Freight charges, up to destination: Shall be payable at actual limited to amount indicated

under scope of supply (clause no.1).

07. Insurance charges, up to destination: Nil. Safe delivery of the consignment to consignee

will be your responsibility at your cost & risk.

08. Security Deposit: Exempted, since you are registered with NSIC

09. Delivery period: Within 4 (Four) months from the date of issue of order. However, early

delivery shall be acceptable.

No materials shall be dispatched against this Purchase Order after expiry of the delivery

period unless formal extension of delivery period is issued to you in writing from this office.

Delivery of any materials against this order in violation of this clause shall be at the sole risk

of the suppliers. Except under specific instructions delivery to stores is restricted up to 3.00

p.m. on all working days except Saturdays.

10. Consignee: Depot Officer, Jhanjra Area Store, ECL, P.O.- Laudoha, Dist- Burdwan

11. Paying Authority: General Manager (Finance)-I/C, ECL, CMDs Office, Sanctoria, P.O.

Dishergarh, Dist. Burdwan (West Bengal).

12. Terms of Payment: 100% payment shall be made within 21 (twenty one) days of receipt and

acceptance of materials by the consignee or submission of bills together with documents

stipulated in the order, whichever is later.

Payment would be made through e-payment, the details for which shall be as under:

A) Name of the Payee in Block Letters BENGAL TOOLS LIMITED

B) Address 2, JESSORE ROAD, DUM DUM,

KOLKATA – 700 028

C) Bank A/c No. of Payee 30997439620

D) Name of the Bank State Bank of India

E) Name of the Branch & Branch Code RM-IV, Commercial Branch, Code: 7502

F) PAN CARD No. of Payee AADCS7466G

G) INDIAN FINANCIAL SERVICE CODE

(IFS Code)

SBINO007502



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13. Submission of Bills: You shall have to submit bills (five copies) to the consignee along with the

consignment and challan along with the requisite document, specified in Order. The consignee

shall then send SR Notes, Challan, Inspection Note and Three copies of bills (including original)

and any other requisite documents to the Paying Authority.

a) The following additional information should be incorporated in your invoice as per Central

Excise Act so that ECL may avail CENVAT Credit under rule 11(2) of Central Excise Rules.

i) Name of the Consignor

ii) Address of the Consignor

iii)Centralized Central Excise Registration No. of Consignor

iv) Address of Corporate Office

v) Central Excise Division

vi) Central Excise Range

vii) Commissionerate

viii) TIN No. & VAT No.

ix) Name and address of the Consignee

x) Central Excise Registration No. of Consignee

xi) Central Excise Range, Division and Commissionerate of Consignee

xii) Description and classification of goods

xiii) Time and Date of removal

xiv) Mode of Transport and Vehicle Registration No. & RR No.

xv) Rate of Duty

xvi) Quantity and Value of Goods

xvii) Excise Duty, Primary Edu. Cess & S.H. Edu.Cess

xviii) Invoice should in Triplicate. (Original for buyers, Duplicate for Transporter and

Triplicate for Consignor/Assessee).

b) Information relating to ECL to be incorporated by you in your invoices :

a) Centralized Central Excise Registration No. of ECL: AAACE7590EEM001

b) Address of Corporate Office: Office of CMD, ECL, Sanctoria-713 333.

c) Central Excise Division: Asansol II, Senraleigh Road, Asansol-713 305

d)Central Excise Range : Kulti, X-10, South Road, Burnpur- 713325

e) Commissionerate: Bolpur (West Bengal).

f) TIN No. & VAT No. : 19741701222 & 19741701028.

g) Centralized Service Tax Registration No. of ECL : AAACE7590EST007

Separate bills (five copies)/Challan should be raised for each consignment.

One copy of the Dispatch documents of the each consignment should invariably be forwarded to this

Office, ECL, HQ. Sanctoria. Following documents, duly authenticated by you, wherever required,

should be submitted along with Bill(s) –

I. 100% Bill(s) in Quintuplicate duly pre-receipted and stamped.

II. Receipted challan

III. Copy of the Consignment note

IV. Price Certificate

V. Price Fall Clause Certificate

VI. Any other documents specified in the order

14. Mode of Dispatch: Materials shall be dispatched by Road freight paid.

It shall be your responsibility to arrange for the stores being sufficiently and properly packed for

transport by road so as to their being free from loss or injury on arrival at destination. The

packing of the stores shall be done at your expense. Way Bill, if required, may be obtained from

consignee for which a request may be sent to them indicating following details – 1. TIN/VAT No.

2. VAT No.

3. Full address with pin code

4. PAN No.



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15. Inspection:

i. No initial inspection will be made. Final inspection will be made at the consignee’s end

after receipt of the materials and the same shall be final and binding upon the supplier.

ii. If any stores are rejected, consignee will have liberty to:-

a) Allow the supplier for satisfactory replacement of the rejected part within a specified

time and supplier will bear the cost of replacement such as freight etc. and any such

replacement will be without being entitled to any extra payment.

b) Buy elsewhere the quantity of stores similar to those rejected at the risk and cost of the

supplier.

c) Terminate the contract whether in part or whole. Rejected part / quantity shall have to be

removed by the supplier within 15 days of receipt of intimation of rejection.

d) Pre-dispatch inspection and tests:

• Special Materials: In addition to the prescribed inspection and quality control

measures adopted by the conveyor manufacturers/ suppliers during raw materials,

sub-assembly and final assembly stages, the manufacturers/ suppliers should be

prepared to furnish without extra charge, test certificates covering mechanical

properties and chemical composition for special raw materials used (e.g. materials

for idler or drum shaft). This certificate should be from approved testing

Laboratories e.g. small industries services, Institutes, laboratories or CMERI,

Durgapur or NPL, New Delhi etc. Samples for such special materials are to be

collected as per relevant latest Indian Standards, Codes of Purchaser’s

representatives from manufactured components of the equipment.

• No Load Test Run of Conveyor Drive Head: The conveyor drive head

comprising of reduction gear, coupling, driving drum etc. mounted on a

composite rigid base frame shall be subject to a no-load test run for few hours to

check for abnormally high temperatures or abnormal conditions including too

much noise. The conveyor manufacturer shall furnish a test certificate in duplicate

for the above no-load tests. The following additional tests also may be carried out

at the option of the purchaser and all facilities for carrying out such tests shall be

extended by the supplier at their own cost.

� Dimensional checking of all items.

• For pulleys following tests shall be carried out:

� Checking of out of roundness.

� Static balancing test.

� Test of bought out items.

• The manufacturer shall make available to the inspector the following documents

during the inspection. All drawings shall conform to the IS: 696 amended up to

date and all dimensions shall be in milli-metres.

� General arrangements dimensional sketch of complete conveyor.

� Drive unit and discharge drum assembly indicating plan, side and front

views complete with all important dimensions and clearances including

bolt hole centres for foundation.

� Tail drum arrangement.

� Take-up arrangement.

� Constructional drawings of typical idlers showing all important details.

� Notarized copy of valid DGMS approval for supplied applicable

Electricals, with authorization from the firms.

� The supply shall accompany manuals & catalogues.

� The conveyors should be manufactured adopting proper jig and fixture so

that future interchangeability is fully ensured.

� All bearing should have grease nipples.



ECL Page 5

� The supply must incorporate the calculation of HP of the conveyor.

� Copies of Drawing related to Sl. 27.1.1 to 27.1.5 & copies of Single Line

Electrical layout of the starters.

• Interchangeability: Similar rated gear boxes, pulleys and other sub-assemblies

must be fully interchangeable without the need for any modification.

• COMPLIANCE WITH STANDARDS: The components shall comply with the

relevant latest Indian Standards specifications and codes of practices or in their

absence the equivalent BS/DIN/USA or equivalent International Standards. Safety

arrangement should be provides as per IS code (IS: 7155), CEAR 2010 amended

up to date and as per valid DGMS approval.

16. DGMS Approval: Each and every supply of all electrical must be accompanied with

notarized copy of valid DGMS approval, failing which the consignment will not be accepted.

17. Guarantee/Warranty: The equipment offered shall be covered by a guarantee in respect of

materials, workmanship and performance. The period of guarantee shall be at least 12 months

after the equipment is commissioned or twenty four months after receipt & acceptance of

equipment at the consignee's end, whichever is earlier. The supplier shall make good, free of

cost, any defective part in machinery where defect(s) develop under proper use and arises

solely from faulty materials/ workmanship within the guarantee period, and the guarantee also

includes bought out items by the manufacturer as deemed fit by the user/consignee.

The supplier warrants that the goods supplied under the contract are new, unused of the most

recent improvement in design and materials unless provided otherwise in the contract. The

supplier further warrants that all goods supplied under this contract shall have no defect

arising from design, materials or workmanship (except when the design and/ or materials is

required by the purchaser's specification) or from any act or omission of the supplier, that

may develop under normal use of any act or omission of the supplier, that may develop under

normal use of the supplied goods in the conditions prevailing in the country of final

destination.

18. Performance Bank Guarantee: You will have to furnish a Performance Bank Guarantee on

any nationalized/scheduled bank in India for 10% landed value of the materials including

taxes and other levies etc. on order as a coverage towards the supplier’s performance against

the contract, in the standard format enclosed in Annexure-B. The Performance Bank

Guarantee must be submitted before supply of first consignment against order and is to be sent

directly by the bankers to the office of GM (MM) by registered post. No payment will be done

without submission of Performance Bank Guarantee. The PBG period will cover the

Guarantee/Warranty period plus three months. The validity of PBG may be extended in case

the ordered items do not work satisfactorily within the Guarantee/Warranty period. The Bank

Guarantee should be furnished on a Non-Judicial Stamp paper worth �.100/= or more and as

per the standard format of ECL. The stamp paper for the purpose of Bank Guarantee must be

in the name of the issuing Bank. The total value of the PBG shall be Rs. 25,63,188.00 (Rupees

Twenty Five Lakhs Sity Three Thousand One Hundred and Eighty Eight Only). The PBG

will be released after expiry of the Guarantee/Warranty period, if no claim is pending, with the

approval of Competent Authority. No payment will be made without submission of

Performance Guarantee.

19. Manufacturer’s Guarantee and Test Certificate: Manufacturer’s Guarantee and Test

Certificate should be furnished by you along with the each & every supply.



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20. Price Certificate: You will have to certify on the bill that the prices charged are not higher

than that applicable to all your customers including Coal Company and other Indian Govt.

Deptt./Organization/DGS&D/CIL and its Subsidiaries etc.

21. Price Fall Clause: (A) The prices charged for the stores to be supplied under the purchase

order by the supplier shall in no event exceed the lowest price at which supplier sells the

stores or offers to sell the stores of identical description to any customer during the tenure of

the supply order.

(B) If any time during the said period, the supplier reduces the sale price, sells or offers to

sell such stores to any other customer at a price lower than the ordered price, they shall

forthwith notify such reduction of sale or offer to sell to us to enable us to amend the rates of

the order.

22. Liquidated Damages: In the event of failure to delivery or dispatch the stores within the

stipulated date/period in accordance with the samples and/or specifications mentioned in the

supply order and in the event of breach of any of the terms and conditions mentioned in the

supply order, we have the right:

a) To recover from you, as agreed, liquidated damages, a sum not less than 0.5% (half

percent) of the price of any stores which you have not been able to supply as aforesaid

for each week or part of a week during which the delivery of such stores may be in

arrears limited to 10%. Where felt necessary the limit of 10% can be increased to 15%.

b) To purchase elsewhere, after due notice to you, on your account and risk the stores not

supplied or other of a similar description without canceling the supply order in respect of

the consignment not yet due for supply or

c) To cancel the supply order or a portion thereof, and if so desired to purchase the stores at

your risk and cost and also

d) To extend the period or delivery with or without penalty as may be considered fit and

proper, the penalty, if imposed shall not be more than the agreed Liquidated Damages

referred to in clause (a) above.

e) To forfeit the security deposit full or in part.

f) Whenever under this contract a sum of money is recoverable from and payable by you,

Coal India Limited and its subsidiary companies shall be entitled to recover such sum by

appropriating, in part or in whole by deducting any sum or which at any time thereafter

may become due to you in this or any other contract. Should this sum be not sufficient to

cover the full amount recoverable, you shall pay Coal India Limited and its subsidiary

companies on demand the remaining balance. You shall not be entitled to get any gain on

any such purchase.

23. Force Majeure: If the execution of the supply order is delayed beyond the stipulated in this

supply order as a result of outbreak of hostilities, declaration of an embargo or blockade, or

fire, flood, acts of nature or any other contingency beyond your control due to the act of God

then Eastern Coalfields Limited may allow such additional time by extending the Delivery

period, as it considers to be justified by the circumstance of the case and our decision shall be

final. If and when additional time is granted by ECL the supply order shall be read and

understood as if it had contained from its inception the delivery date as extended.

24. Identification Mark: Identification mark i.e. Maker's name etc. shall be

embossed/engraves/purchased on bulk materials at visible place which is not subject to wear

and tear for easy identification at any point of time.

Manufacturer’s distinctive identification mark and manufacturing year should be

embossed/punched/or otherwise legibly indicated on the visible non-wearable place of the

items except Nuts & Bolts because of lack of space for punching/embossing on these items.



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Only tag is to be attached in each of the above items i.e. nut & bolts indicating therein part

number, description, year and month of manufacture.

25. After Sales Service: You have to provide after Sales & Service as and when required by

ECL. You shall also have to ensure free commissioning of the machine and free training for

operation & maintenance of the machine to ECL personnel.

26. Terms and conditions of Notice Inviting Tender and/ or Tender Documents are an integral

part of this Purchase Order.

27. Any terms and conditions not specifically mentioned in the order, shall be governed by the

General Terms & Conditions of Supply of Stores” as mentioned in Enclosure 6 of the tender

documents. Further, any terms and conditions not specifically mentioned anywhere in the

“General Terms & Conditions of Supply of Stores”, shall be governed by the provisions of

the Purchase Manual which is available in the web-site of Coal India Limited namely –

www.coalindia.in.

28. Jurisdiction: Any dispute arising out of this contract shall come under the sole jurisdiction

of Court at Asansol, West Bengal.

Encl : Annexure –X (Technical specifications)

Annexure – B (Format for Performance Bank Guarantee)

Annexure - D (Format for Integrity pact)

Yours faithfully,

For and on behalf of Eastern Coalfields Limited

Asst. Manager (MM) (Pur) Chief Manager (MM)(Pur)

Copy to:

1. CVO/GM (E&M)/GM (MM)(Stores)/GM(Fin.)IC, ECL(HQ).

2. Progress Cell, ECL (HQ) – This is covered against IC no. 51411071 dated 14.07.2014

B.C No: CB/PSLW-PRJ/P&M/15-16/19 dated 08.04.2015 and F.C No: GM(F)/UG Belt

Conveyor/15-16/22 dt 10.04.2015 for Rs. 4,97,76,440.00

3. SM (F) (Bills) ECL (HQ). email: [email protected]

4. Depot Officer, Jhanjra Area Store, ECL, P.O.- Laudoha, Dist- Burdwan

5. Shri J. N. Mishra,IAS,(Retd)- 2/77,Vijay Kand, Gomati Nagar, Lucknow-226010.

6. Shri Rakesh Jaruhar- Sector-B/9, Flat no.6547, Vasant kunj, New Delhi-110070

7. GM (MM) –CIL/WCL/CCL/BCCL/SECL/NCL/MCL/NEC.

8. Asstt. Commissioner, Commercial Taxes, Central Section, 14, Beliaghata Road, Kolkata



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Annexure –X (Technical specifications) TECHNICAL SPECIFICATION FOR 1400 mm WIDE , 1200 TPH , U.G. BELT

CONVEYOR COMPLETE WITH 6.6 KV, FLP ELECTRICALS

A

1400 mmWIDE,700 MTR.LENGTH,150 MTR LIFT U.G. BELT

CONVEYOR COMPLETE, WITH 6.6 KV ELECTRICALS,

SUITABLE FOR PVC BELTING QUANTITY-1(ONE) SET

ACCEPTED

1.0

DUTY: The conveyors are to be used for transport of (-) 200 mm mixed

with ROM coal with some contamination of shale, stone and other foreign

material. The conveyors may have to deal with maximum lump size upto 400

mm and may have to operate in a humid, dusty and wet condition. The

ambient temperature may vary upto 500 C and maximum Relative Humidity

is about 98%. The conveyor shall be capable of adaptation to the ground

contour to the permissible extent. All the components of the conveyor need

to be designed for operation round the clock, at the designed load, other duty

parameters including Lift.

ACCEPTED

2.0

SCOPE OF SUPPLY: The scope of supply shall include the complete

conveyor system with different accessories in required quantity in terms of

the detailed specifications forming part of the tender specification. It shall,

inter-alias, include the following:-

ACCEPTED

2.1 Capacity: 1200 TPH ACCEPTED

2.2 Length: 700 Mtrs. for A , suitable for PVC Belting ACCEPTED

2.4 Lift for A & B : 150 Mtr. ACCEPTED

2.5 Foot mounted motor for A & B: Power 2x 300KW SQIM, Syn. Speed-

1500 RPM with matching 2 nos. starters of 6.6KV for dual drive. ACCEPTED

2.6 Gear Box suitable for twin drive with respect to above motor. Output R.P.M

should be such that Belt speed shall be 2.5 Mtr/Sec ACCEPTED

2.7 Base Frame, ACCEPTED

2.8 Couplings, fluid coupling to be of steel body aqua filled high starting torque

type ACCEPTED

2.9 Discharge drum assembly, ACCEPTED

2.1 Pulleys, ACCEPTED

2.1 Hold back devices(adequate strength with manual bypass arrangement), ACCEPTED

2.12 Electro-hydraulic thrustor brake, ACCEPTED

2.13 Conveyor frames, ACCEPTED

2.14 Stool for supporting conveyor frames, ACCEPTED

2. 15 Idler frames, ACCEPTED

2. 16 Idlers – Carrying, return, impact, self-aligning & transition, ACCEPTED

2. 17 Decking Plates, ACCEPTED

2. 18 Skirt Plates, ACCEPTED

2. 19 Belt cleaning devices, ACCEPTED

2. 20 Bearings and Plummer Blocks, ACCEPTED

2. 21 Electrically operated motorized loop take-up, ACCEPTED

2. 22 Tail End, ACCEPTED

2. 23 Guardings, ACCEPTED

2. 24

Pull cord switches including suitable pulling wires & connecting cables

along the belt with 20 Mtrs interval up to Tail End and with lock out facility

and Light Signalling Unit provided with suitable Gong (Bell). Suitable rated

& no. L.S. unit having transformer of voltage ratio 550V on primary side &

110V/24V/12V tappings on secondary side.

ACCEPTED

2. 25 Belt sway switches on both sides of the conveyor along the belt with 40

Mtrs. Interval & also at drive & discharge drum. ACCEPTED

2. 26 Zero speed switch/ belt sequence switch, ACCEPTED

2. 27 Required complete structure for full length. ACCEPTED



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2. 28 Loud hailing communication system with suitable connecting cable along

belt with 20 Mtrs interval up to tail end. ACCEPTED

2. 29 All applicable electricals should be as per CEAR 2010 amended up to date

and have valid DGMS approval. ACCEPTED

2.3

Any other accessories required for successful & safe operation of the

conveyors to meet the system requirement including control cable connected

with zero speed belt sway & Pull Cord Circuit. ACCEPTED

3.0 DRIVE UNIT

3.1

Drive unit consisting of the Drive Drum Assembly, gear reducers, motors

and other components shall be mounted on a common rigid base frame. The

unit shall be robust and compact. The design shall be modular so that

individual components can be taken out and replaced for repair and overhaul,

with minimum dislocation of other components. The unit shall be so built as

to facilitate dismantling into sub-assemblies and re-assembly at site. The

design should facilitate easy maintainability of all components.

ACCEPTED

3.1.1

The conveyor system shall have twin drive consist of twin drive pulleys of

not less than 1000 mm diameter and identical overall dimensions and also

with extensions on both the sides to fix gear boxes and motors on both the

sides of the drums. Each drive shall be able to be driven either by one or both

the motors.

ACCEPTED

3.1.2

The drive drums shall have to be arranged by additional bend pulleys in such

a way so that both the drive pulleys drive on the clear side of the belt with

maximum angle of lap. ACCEPTED

3.1.3

The motors, fluid couplings, flexible couplings with Rubber Resilent

coupling, brakes, anti-roll back devices etc. shall be of same rating and speed

characteristics. ACCEPTED

3.1.4 The difference in speed between the primary and the secondary shall be well

within the slip characteristics of motors or the couplings. ACCEPTED

3.1.5 The drive shall be very compact in design so that the same can be easily

installed in underground coal mines gallery. ACCEPTED

3.1.6

The characteristics of the drive unit should be compatible with the

characteristics of the driven equipment so that in advance conditions the

equipment can be started at full load. At the same time it shall be possible to

run the conveyor with less numbers of motors ( Less Power) as may be

required to cater for reduced load of coal.

ACCEPTED

3.2 BASE FRAME:

3.2.1

The common base frame for the Drive Unit shall be made of tested quality

rolled steel joists, suitably braced or built in fabricated steel sections, so that

the unit in operation is vibration free. The motor, reduction gear box,

couplings and drive pulleys shall be properly aligned in the works of the

manufacturer, before the supply is effected. Dowel pins shall be provided

with gear boxes, motors and Plummer blocks for proper alignment. No. and

size of foundation bolts provided for grouting onto a concrete base or fixing

to steel structure should be sufficient to ensure not only to permit a stable

operation of the Drive but also to withstand any untoward tension that may

develop in the operation of the conveyor. The driving drums shall be

reasonably clear off the ground so that the bottom run of the belt shall not

foul with any structure.

ACCEPTED

3.2.2

Necessary access to clean the material falling at the bottom of drive drum

shall be provided. The base frame shall be machined at necessary places to

receive the motors, reducers and bearing housing of the drum unit. ACCEPTED

3.3 DRIVE DRUMS:



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3.3.1

The diameter and thickness of the shell of the drive drums shall be

determined by the manufacturer, taking into consideration, the duty

parameters and type of belting specified. However, in no case, the diameter

and shell thickness shall not be less than 1000 mm and 20 mm respectively.

The face width shall not be less than 1600 mm. The drive drums shall have

suitable lagging. The thickness of the lagging shall not be less than 16 mm.

The lagging shall have diamond pattern grooves.

ACCEPTED

3.3.2

The drum shaft shall be of suitable steel (in no case less than C-40 steel).

The drum shaft shall preferably be connected to the hub through ring

feeder/equivalent keyless shaft to hub connection. ACCEPTED

3.4

COUPLING: Flexible gear couplings shall preferably be used for power

transmission on low speed side. The hub & sleeves of the geared coupling

shall be of forged C-40 steel and bolts shall be of alloy steel. Suitable fluid

coupling (Rubber Resillence type) shall be used on high speed side.

ACCEPTED

4.0 GEAR REDUCERS

4.1

The reduction gear boxes shall be foot mounted suitable for twin drive,

conforming to suitable Indian Standard, completely enclosed in leak proof

and dust proof chamber of standard size to allow natural cooling and running

in oil bath (splash lubrication).Noise leval should be within permissible

limit.

ACCEPTED

4.2 Thermal rating of each gear reducers at 500 C. Ambient temperature shall not

be less than the rating of its drive motor. ACCEPTED

4.3 The gear box shall be rated for service factor in accordance with IS: 7430

with latest amendment . ACCEPTED

4.4

The gears shall be high precision, preferably machine building class,

machine cut, hardened and lapped in accordance with the highest

Indian/International standards. The gears shall have a rated life of 50,000

working hours minimum. The temperature of the lubricant in the gear boxes

shall not exceed 65º C when running continuously under full load conditions

of maximum ambient temperature of 50º C in the shade.

ACCEPTED

4.5 The high speed shafts shall be extended suitably for providing electro-

hydraulic thruster brakes. ACCEPTED

4.6

Suitable oil level indicator, magnetic drain plug and metallic breather shall

be provided. There should be provision for incorporating probe for level

indicator, low level oil and trip. ACCEPTED

4.7 The gear box housing shall be so split as to enable easy maintenance. ACCEPTED

4.8

For the purpose of quick alignment and for easy installation, dowel pins shall

have to be provided. The body shall be split type and made of fabricated/

cast steel as per IS: 1030 – 1982 with latest amendment, Gr. 26-52. ACCEPTED

4.9

Gear shafts shall be supported on roller bearing of ample capacity and

dimensionally conforming to relevant standard. Similar rated gear box must

be interchangeable.

ACCEPTED

5.0 LOOP TAKE-UP

5.1 Horizontal, segmented type,Motorised (electric) Loop take-up shall be

provided of suitable length. ACCEPTED

5.2

The moveable take-up drum shall be on wheels between two guide channel

for easy tensioning. There shall be provision for ‘V’ type plough scraper and

wire netting on either side over the complete span. The attachment of rope to

the take-up trolley shall be such that there shall be no chance of non-

alignment of trolley while pulling.

ACCEPTED

6.0 DRUMS



ECL Page 11

6.1

Diameters: All the drums shall be of welded steel construction and statically

balanced. Solid end discs shall be designed to give maximum strength. The

diameters of the drums shall be as per IS: 8531 – 1977 amended up to date.

However, it should not be less than 1000 mm for drive and discharge drums,

800 mm for tail, take-up & high tension snub drums and 630 mm for low

tension snub drums. The machining tolerance of individual parts of the

drums assembly should comply with IS: 919(current). The diameter & shell

thickness out of roundness shall not exceed ± 0.5 percent of the drum

diameter. All the pulleys shall be stress-relieved.

ACCEPTED

6.2 Face widths of the drums shall not be less than 1600 mm. ACCEPTED

6.3

Shell thickness of the drums shall be suitable for taking bending loads on the

drums. This shall not be less than 20 mm for drive, tail & discharge drums

and 16 mm for other drums.

ACCEPTED

6.4

Bearing & Plummer Blocks: All drums shall be provided with self aligning

ball/roller bearings to suit the loading conditions, for heavy duty conditions,

where shaft diameter exceed 70 mm, spherical roller bearings shall be

provided. Bearing housing shall be provided with grease nipples for

Lubrication purpose. All lubrication nipples shall be readily accessible

without removing the guards. Bearings shall be protected against ingress of

dust and moisture by providing suitable seals on both sides. Life of bearings

shall not be less than 50,000 working hrs. The drums of same diameter shall

have similar size and type of bearings for standardization. Plumber blocks

shall be of cast steel construction.

ACCEPTED

6.5

Drum Shafts: All drum shafts shall be a minimum of C-40 steel as per IS:

1570 (current). The drum shafts shall preferably be connected to hub through

ring feeder/ equivalent keyless shaft to hub connections.

ACCEPTED

6.6

All drums of conveyors shall have stiffeners except the tail drum and snub

drums on lesser tension side. The drive drums, tail drum & discharge drum

shall be lagged. ACCEPTED

7.0 CONVEYOR FRAME

7.1

The conveyor frame shall consist of ISMC 150 stringers connected by ‘N’

shaped cross bracings of at least ISA 50X50X6. Individual sections shall be

3000 mm long so as to facilitate easy assembly at site without any match

marks and having any reference to left and right of the conveyor. At the

same time top and bottom idler frames when assembled on the stringer shall

have their position at right angles to the longitudinal axis of the conveyor.

Provision shall be made for joining of sections with permitted play in the

vertical plane of the order of 30 to 4

0. The conveyor frame shall be complete

with supporting stools. Holes for fixing the supporting stools shall be drilled

on stringer channel for intermediate structures. Stools for support of

conveyor frame shall consist of vertical supports ISMC 150 with base plate

to enable fixing of stool on foundation and with adjustment for the flat return

roller. The height of the stools shall be such as to give clearance between

return roller and ground of at least 500 mm. The plates of the stools shall be

suitably drilled for grouting.

ACCEPTED

8.0 IDLERS ACCEPTED

8.1

The carrying and return idler & idler sets shall conform to IS: 8598 (Idler &

Idler sets for Belt Conveyors). Lengths of individual Roller shall conform to

IS: 8598 (Current & all idlers shall be drop-in-type).

ACCEPTED

8.2

Diameter of Idler, shell thickness for carrying, return & Impact Idlers shall

be as indicated. Idlers rollers of diameter less than following shall not be

accepted.

ACCEPTED

8.3 The Idlers will be guaranteed for minimum 30,000 working hours

unconditionally. ACCEPTED



ECL Page 12

8.4 PARAMETE

RS Carrying Idlers

Return

Idlers Impact Idlers

O.D. of Steel

Tube(mm): 152.4

152.4

114.3 ACCEPTED

Tube

thickness(mm): 5.4 5.4 5.4 ACCEPTED

Spindle dia in

mm 30 30 30 ACCEPTED

Length of

spindle in mm Carrying (530)

Return

(1600) Impact (530) ACCEPTED

End slot of spindle should be 22 mm width Both for Carrying, Return and Impact

Idlers. ACCEPTED

Length mm carrying ( 530 mm) Return

(1600 mm) Impact ( 530 mm) ACCEPTED

O.D. of rubber

disc(mm) - - 152.4 ACCEPTED

Steel tubes(Heavy ERW) used in the manufacture of Idler & Idler set shall conform

to IS: 9295 (Steel tubes for idlers for troughed belt conveyor) ACCEPTED

Idler spacing shall be as under:-

Belt

Width(mm) Carrying Idler(mm)

Return

Idler(mm) Impact Idler(mm)

1400 1000 3000 450 ACCEPTED

8.7

The bearing housings shall be processed from cold rolled annealed sheets,

extra deep drawing quality. The bearing housing surface shall be finished to

M7 (min) to IS: 919 (current). The thickness of the sheet shall be minimum

5.4 mm and thickness of housing at any cross section should not be less than

3 mm.

ACCEPTED

8.8

The bearing housings shall be press fitted & welded at both ends of the idlers

tubes simultaneously using inert gas / submerged welding equivalent

continuous arc welding. The bearing housing on both ends of the tube shall

be co-axial. The welds shall be tested for strength and penetration. The

details of this shall clearly be furnished in the tender.

ACCEPTED

8.9

The bearing housing shall be charged with an adequate quantity of good

quality grease capable of remaining free from hardening & separation

consistent with the sealed for life design & Idler should have sufficient space

for grease on either of the idlers.

ACCEPTED



ECL Page 13

8.10

The radial run out of the idler shall be minimum & shall not exceed 0.8 mm,

seize resistant Ball bearings with C3 clearance & dimensionally conforming

to relevant Indian Standards are selected according to bearing manufacturers

recommendation for rated life of at least 30,000 working hours shall be

needed.

ACCEPTED

8.11 IDLER SHAFT: Idler shaft shall be made of steel not inferior to C-40 of IS:

1570 (Schedule for wrought steel for general engineering purposes). ACCEPTED

8.12 IDLER ARRANGEMENT: ACCEPTED

8.12.1 CARRYING IDLERS: The carrying idlers set shall consist of three rollers

of equal lengths. The troughing angle shall be 35 deg. ACCEPTED

8.12.1.1 The Angle of Tilt: ACCEPTED

8.12.1.1.1

The angle of tilt of side idlers shall be towards the material flow and the

angle of tilt shall be marked on the frame. Arrow mark shall be given

indicating the tilting direction. ACCEPTED

8.12.1.1. The side rollers for the purpose of training shall not be accepted except when

these form part of self-alignment of on swiveling base. ACCEPTED

8.12.1.2 The direction of belt travel shall be marked on the frame by arrow head. ACCEPTED

8.12.2 RETURN IDLERS: The return idlers shall be of single roll type. ACCEPTED

8.12.3 IMPACT IDLERS: The impact idler shall be used at all transfer points.

Four sets each of 3 impact idlers shall be provided for each transfer points. ACCEPTED

8.12.4

SELF ALIGNING IDLERS: On the carrying side two sets of self aligning

troughing idlers shall be placed at 5 metre spacing from head & tail pulleys

and the spacing of intermediate self aligning troughing idlers shall be 15

metres. On the return side two sets of self aligning return idlers shall be

placed at 10 metre spacing from head and tail pulleys and the spacing of

intermediate self aligning return idlers shall also be provided near the drive

& take-up pulley. In case of short conveyors at least one set of self aligning

idlers shall be provided on the carrying and return run.

ACCEPTED

8.12.5

WING ROLLERS: Wing rollers shall be of appropriate design and capable

to withstand the thrust of carrying belt also material of shell conform to IS:

9295 amended up to date.

ACCEPTED

8.12.6

TRANSITION IDLERS: Transition idlers shall be used adjacent to head &

tail pulleys to permit gradual transition from fully troughed section of belt to

a flat faced pulley eliminating high stress concentration in belt. The

transition length and the number of transition idler shall be selected

depending upon the tension, type & size of belt, number of plies and other

necessary governing factors.

ACCEPTED

8.12.7 Friction factor shall not exceed 0.02 for 1% of the idlers selected at random

shall be tested and the average result shall not exceed this figure. ACCEPTED

8.12.8

End cap thickness(Min.), shell thickness, spindle dia. at bearing shall be

clearly spelt out with drawings by tenderer along with data required with the

offer. ACCEPTED



ECL Page 14

8.13 IDLER BRACKETS: ACCEPTED

8.13.1 The brackets for the carrying idlers shall be of rigid frame construction to

withstand shock loads resulting from large lumps. ACCEPTED

8.13.2

The fixing arrangement of carrying and return idlers shall be such as to

permit adjustment of the idler sets for purposes of belt tramming allowance

for such adjustments shall be provided on both sides of the conveyor and the

play shall not be less than 10 mm on either side.

ACCEPTED

8.14 The idlers shall be of drop-in type to enable easy replacement. ACCEPTED

9.0

TAIL END: The tail end unit shall be compact design carrying tail drum.

The drum shall be completely enclosed with inspection door for cleaning if

required. Suitable skirt plate shall be fitted with rubber liners over the entire

length of tail end section. 3.15 mm thick deck plate shall be provided 50 Mtr.

from Tail end and entire loop take-up portion from drive end. Provision

should be there for anchoring / jamming the unit. The tail end should be

completely fitted with impact idler 152 mm O.D. over rubber disc (114.3

mm dia. steel tube).Dust collector fitted with scroll to be attached to tail end

drum.

ACCEPTED

10.0

SKIRT PLATE: Suitably located skirt plates shall be provided at every

loading point for a distance of 5 metre to prevent spillage. At their

commencement, these plates shall be placed about two thirds of belt width

apart and they shall widen out in the direction of belt travel. These plates

shall be mounted on to the stringers give a clearance of at least 50 mm from

the belt surface and this gap shall be closed by a soft solid fire resistant

neoprene strip fixed to the skirt plates by means of slotted holes to permit

adjustment necessitated by wear. The neoprene strips shall be approx. 12 mm

thick and 100 mm wide. Piece of conveyor belting shall not be used for this

purpose. The skirts should flare slightly upwards from the chute to prevent

the materials from wedging.

ACCEPTED

11.0

DECKING PLATE: Formed steel sheet decking plates to protect bottom

belt against spillage should be provided. The thickness of decking plate shall

not be less than 3.15 mm. The corrugation should be provided in the deck

plates parallel to the width of the conveyor for providing strength

ACCEPTED

12.0 BELT CLEANING ARRANGEMENT ACCEPTED

12.1

Counter weighted/ spring loaded rubber scraper or neoprene scrapers shall be

provided at discharge drum. The neoprene strip used with the scraper shall

be minimum 12 mm thick and of suitable width shall be fixed suitably to

facilitate easy mounting & smooth working.

ACCEPTED

12.2

A ‘V’ type plough scraper (600 angle) shall be provided on the return belt

near the tail drum. In conveyors using loop/vertical gravity take up ‘V’ type

plough scraper shall also be provided near the snub drum forming part of

take-up unit to prevent material spilled on the return belt, from damaging the

belt or chocking the take up drums.

ACCEPTED

12.3 The conveyors shall be provided with a self-cleaning type rubber disc return

idler near the head drum for cleaning the return belt. ACCEPTED



ECL Page 15

13.0

HOLD BACK DEVICE: Suitable hold back devices shall be provided for

preventing running back of the conveyor belt in loaded conditions due to

power failure or otherwise. It shall be released instantly when power resumes

or the delay is removed. Suitable manual by-pass facility should be available

in the Hold Back devices so that the belt can be run in the opposite direction,

if required.

ACCEPTED

14.0

ELECTRO-HYDRAULIC THRUSTER BRAKE: Necessary electro-

hydraulic thrustor brakes shall be provided with the conveyors after

calculating the coasting time.

ACCEPTED

15.0 ACCESSORIES

15.1

Pull Cord Switches: For stopping the conveyor from any point along the

conveyor length, pull cord switches shall be provided on one side of the

whole conveyor length. This shall be totally enclosed, dust and vermin proof,

with trip and reset levers mounted along with main walkway side at regular

interval of minimum 20 metre (with min. one per conveyor). The pull cord

rope shall be of PVC sheathed GI wire. The switches should be FLP with

lock out facility & with inter connected cable throughout the belt as per

required IS.

ACCEPTED

15.2

Belt sway switch: Totally enclosed, dust and vermin proof, FLP belt sway

switch shall be provided on both sides along the conveyor length at a regular

interval of 50 metres. Belt sway switches shall also be provided near head

drum, drive drums. These switches shall be auto reset, double contact type,

one for advance indication of excessive belt sway and the other for tripping

the conveyor.

ACCEPTED

15.3

Zero speed switch/ Belt sequence switch: One number belt speed monitoring

switch per conveyor shall be provided which will stop the conveyor in case

the belt speed falls below 80% of the rated speed. These switches shall also

serve as belt sequence switch for the preceding conveyor. Block chute

indication should also be provided.

ACCEPTED

16.0 GUARDING

16.1

Guarding on the conveyor shall comply with the relevant latest Indian

Standards. The guards shall be of expanded metal conforming to IS: 412

(current). ACCEPTED

16.2 The minimum clearance between the guards and moving parts and the size of

opening in guarding shall be as per abone/ Relevant IS/Statue. ACCEPTED

16.3

Slots 30 mm suitably reinforced may be provided in guards for insertion of

bars for cleaning. The minimum distance between any moving parts of the

conveyor and any part of the slot shall be 300 mm. ACCEPTED

16.4

Guards shall totally enclose all parts as far as practicable prevent access to

the part i.e. for in-running belt tips, the guard around which an operator can

put his arm shall extend at least 900 mm from the belt.

ACCEPTED

17.0 MOTOR



ECL Page 16

17.1

Both will be 2 x 300 KW, TEFC FLP Induction motor of squirrel cage type

suitable for work with 6.6 KV service Voltage, in gassy coal mine with

Motor Protection Relay (suitable for restricted earth neutral system),

synchronous speed 1500 rpm, insulation minimum class F, high torque, foot

mounted integral type, with IP-55 protection as per IS: 4691 amended up to

date. The motor should be capable of developing 200% full load torque as

starting torque, with starting current limited to 600% full load current.

ACCEPTED

17.2 The motor shall be capable of giving rated output without reduction in the

expected life span when operated continuously in the system.. ACCEPTED

17.2.1 Variation in voltage: ± 10% ACCEPTED

17.2.2 Frequency: 50 cycles/sec ± 3% ACCEPTED

17.2.3

The motor shall be suitable for full voltage D.O.L. starting. This shall be

capable of starting and accelerating to the rated speed along with the fully

loaded driven equipment without exceeding the acceptable winding

temperature even when the supply voltage is 80% of the rated voltage

through out the starting period. The motor shall be capable of three equal

speed starts in an hour from hot conditions, two starts in quick succession

from cold condition and one restart from hot condition.

ACCEPTED

17.2.4

The locked rotor current shall not exceed six times the rated full load current

subject to tolerance as given in IS-325. The drive unit supply should also

include a fully solid state temperature monitoring system with remote

indication and alarm for bearings, motors and fire prevention in the areas of

the driven drums.

ACCEPTED

17.2.5 Cable end boxes shall be suitable for receiving 6.6 KV grade PVCDWA

cable, respectively (for A & B), suitable for restricted earth neutral system. ACCEPTED

17.2.6

The independent earthing points shall be provided in accordance with IS:

3043 on opposite side of the motor for bolted conditions. Motors shall be

provided with eye-bolts, lugs or other means to facilitate lifting.

ACCEPTED

17.2.7

The design, manufacture, installation, performance and testing shall conform

to the latest revisions of the Indian Standards equivalent to IEC standard for

the applicable motor type and rating latest Indian Electricity Act, CEAR

2010 and IS: 325.

ACCEPTED

17.2.8

The motor vibration shall be within the limits specified in IS: 4729.

Vibration shall also be within the limits specified by the relevant standard for

the driven equipment when measured at motor bearing. ACCEPTED

STARTER

18.0

The supply shall be complete with 2 nos. suitable FLP D.O.L. starter as per

service voltage i.e. 6.6KV for A & B. needed in composite panel forabove

motor. This shall be supported by a skid or platform so that it will not be in

direct contact with floor. Proper tapping should be provided to connect the

starter for the purpose of stator monitoring/ health monitoring the remote

control.

ACCEPTED

18.1

The starters shall have vacuum contactors 200% rated at AC 4 duty

condition and should also incorporate adjustable time delay 0 to 60 seconds,

O/L, single phasing preventor and E/L to suit restricted earth neutral system. ACCEPTED



ECL Page 17

18.2

The voltage rating of the starter shall be 6.6KV at a frequency of 50 Hz. The

system of supply is restricted earth neutral system. The no load voltage may

vary by ± 6%. The contactors shall hold even at 80% of the rated voltage. ACCEPTED

18.3

The starter shall afford, to the motor protection against short circuit,

overload, under/no voltage, earth leakage and single phasing. All semi-

magnetic and magnetic electric controls shall be provided with fuses for

control circuits. The control circuit shall have provision to incorporate

sequence operation of the conveyor and tripping for an operation of various

protective devices enumerated above. The remote control circuits

incorporating belt protection devices, remote start, stop etc. shall be

intrinsically safe and as per CEAR 2010 amended up to date for use in

Underground Gassy Mines.

ACCEPTED

18.4 The starter shall be complete with incoming, outgoing, through going cable

sealing and dividing boxes, as well as sealing boxes for control cables. ACCEPTED

18.5

The composite panel shall house the contactors for both the motors of the

drive. A suitable timer may be incorporated in the panel to enable staggered

start of the motors. ACCEPTED

18.6 Starters should have facilities for coupling/connecting/monitoring console. ACCEPTED

19.0 COMPLIANCE WITH STANDARDS

19.1

The components shall comply with the relevant latest Indian Standards

specifications and codes of practices or in their absence the equivalent

BS/DIN/USA or equivalent International Standards. Safety arrangement

should be provides as per IS code (IS: 7155), CEAR 2010 amended up to

date and as per valid DGMS approval.

ACCEPTED

20.0 INSPECTION AND QUALITY BEFORE DESPATCH

20.1

Special Materials: In addition to the prescribed inspection and quality control

measures adopted by the conveyor manufacturers/ suppliers during raw

materials, sub-assembly and final assembly stages, the manufacturers/

suppliers should be prepared to furnish without extra charge, test certificates

covering mechanical properties and chemical composition for special raw

materials used (e.g. materials for idler or drum shaft). This certificate should

be from approved testing Laboratories e.g. small industries services,

Institutes, laboratories or CMERI, Durgapur or NPL, New Delhi etc.

Samples for such special materials are to be collected as per relevant latest

Indian Standards, Codes of Purchaser’s representatives from manufactured

components of the equipment.

ACCEPTED

20.2

No Load Test Run of Conveyor Drive Head: The conveyor drive head

comprising of reduction gear, coupling, driving drum etc. mounted on a

composite rigid base frame shall be subject to a no-load test run for few

hours to check for abnormally high temperatures or abnormal conditions

including too much noise. The conveyor manufacturer shall furnish a test

certificate in duplicate for the above no-load tests. The following additional

tests also may be carried out at the option of the purchaser and all facilities

for carrying out such tests shall be extended by the supplier at their own cost.

ACCEPTED

20.2.1 Dimensional checking of all items. ACCEPTED

20.2.2 For pulleys following tests shall be carried out: ACCEPTED

20.2.2.1 Checking of out of roundness. ACCEPTED



ECL Page 18

20.2.2.2 Static balancing test. ACCEPTED

20.2.3 Test of bought out items. ACCEPTED

22.0

IDENTIFICATION MARK: Identification mark i.e. Maker's name etc.

shall be embossed/engraves/purchased on bulk materials at visible place

which is not subject to wear and tear for easy identification at any point of

time.

ACCEPTED

26.0 NOTE: Along with offer & supply following must be submitted-

26.1 2 Copies of Drawing related to Sl. 27.1.1 to 27.1.5 & 2 copies of Single Line

Electrical layout of the starter

NOTED &

SUBMITTED

26.2 Notarized copy of valid DGMS approval for supplied applicable Electricals,

with autharization from the firms.. NOTED &

SUBMITTED

27.0 GENERAL

27.1

The following drawings in triplicate shall accompany the offer failing which

it may be passed over. All drawings shall conform to the IS: 696 amended up

to date and all dimensions shall be in milli-metres.

NOTED &

AGREED

27.1.1 General arrangements dimensional sketch of complete conveyor. SUBMITTED

27.1.2

Drive unit and discharge drum assembly indicating plan, side and front

views complete with all important dimensions and clearances including bolt

hole centres for foundation. SUBMITTED

27.1.3 Tail drum arrangement. SUBMITTED

27.1.4 Take-up arrangement. SUBMITTED

27.1.5 Constructional drawings of typical idlers showing all important details. SUBMITTED

27.2 All electricals should be FLP & should have valid DGMS approval. ACCEPTED

27.3 The offers shall accompany manuals & catalogues. ACCEPTED

27.4 The conveyors should be manufactured adopting proper jig and fixture so

that future interchangeability is fully ensured. ACCEPTED

27.5 All bearing should have grease nipples. ACCEPTED

27.6 The offer must incorporate the calculation of HP of the conveyor. ENCLOSED

28.0 NOTE:

28.1

Interchangeability: Similar rated gear boxes, pulleys and other sub-

assemblies must be fully interchangeable without the need for any

modification. ACCEPTED

28.2

Standard: While Indian Standards have been specified I.E.C., British or

General Standards may also be considered, if assessed to be not inferior to be

corresponding Indian Standard. NOTED



ECL Page 19

29.0 INFORMATION TO BE FURNISHED BY THE TENDERER

29.1 Main Parameters:

29.1.1 Conveyor Designation:

Conv.BTL-A-1400

B/Wx2x300KWx70

0 Mtr, Conv.BTL-B

1400 B/W x 2x 300

KW x 600 Mtr.

29.1.2 Quantity: 1 No. Each.

29.1.3 Width in mm: 1400 mm

29.1.4 Length in M: (A) 700 Mtr (B) 600

Mtr

29.1.5 Lift in M: 150 Mtr for both

(A) & (B)

29.1.6 Speed in M/sec: 2.5 Mtr/Sec.

29.1.7 Capacity in TPH: 1200 TPH

29.1.8 Type of Drive: Tandem Drive

29.1.9 Type of Take-up: Motorized

Horizontal Winch

29.1.10 Drive KW: 2 x 300 KW

29.1.11 Troughing Angle of carrying idlers: 35 deg

29.1.12 Name of the Manufacturer: Bengal Tools

Limited (BTL)

29.2 Drums (All types):

29.2.1 Diameter (OD) in mm:

1000mm for

Drive,Discharge,800

mm for Tail & Take

Up

29.2.2 Shell thickness in mm 20mm for Drive &

Diven & 16mm for

Tail & Take up.

29.2.3 Diameter of shaft in mm 180 dia at bearing

29.2.4 Material of shaft C--40/En8

29.2.5 Size & type of bearings: Spherical Roller

Bearing



ECL Page 20

29.2.6 Type of construction of Drums: Welded

construction

29.2.7 Details of ribs & stiffeners provided inside the drum shell: Adequate nos. of

stiffener as required

shall be provided.

29.2.8 Type of shaft & hub collection: Keyless connection

29.2.9 Type of sealing, if any for the bearings: Shall be provided

29.2.10 Lubrication arrangements: Shall be provided

29.2.11 Bearings life guaranteed for (Hours): 50000 Hrs

29.2.12 Out of roundness of drums:

29.2.13 Type of lagging on drive/ discharge drums and details: Rubber Lagging

16mm thick

29.2.14 Width of each drum in mm: 1400 mm

29.2.15 Make: BTL Make

29.3 Idlers (All types):

29.3.1 Diameter (OD) in mm 152.4 mm

29.3.2 Length of roller in mm:

Carrying Roller-

530mm, Return

Roller-1600mm

29.3.3 Wall thickness of tube in mm Carrying-

5.4m,Return-5.4

mm

29.3.4 Diameter of spindle in mm: Carrying-20mm at

bearing, Return-

30mm at bearing

29.3.5 Material of spindle: En-8/C-40

29.3.6 Size & type of bearings:

Seize Resistant

Bearing size-

Carrying-

204,Return - 206

29.3.7 Details of sealing arrangement:

Assembled with

Labyranth seal,dust

cover, rain cap at

both ends detailed

in the drawing.

29.3.8 Approx. capacity of grease cavity: Shall be adequately

filled as required

29.3.9 Whether end shell can be opened for re-greasing or not: Yes



ECL Page 21

29.3.10 Bearing life guaranteed for (Hours): 30000 Hrs.

29.3.11 Eccentricity/ ovality of the idlers: 0.8 mm

29.3.12 Idler tube construction (Seamless/ERW): ERW Tube

29.3.13 Weight of idler set: Carrying roller

15kgx3=45kg

29.3.14 Weight of moving parts:

Carrying roller

each 15 kg,Bottom

roller each 45.9 kg,

Impact roller each

22 kg.

29.3.15 Shore hardness of rubber disc for impact rollers: 65 +/- 5

29.3.16 Spacing: 5 Mtr apart Total -

12 sets.

29.3.17 Make: BTL

29.3.18 Friction Factor: 0.02

29.4 Idler Bracket:

29.4.1 Detailed dimensional drawings: Drawing uploaded

29.4.2 Details of fixing of brackets showing allowance for shifting the idler: Shown in the drg.

29.5 Conveyor Frames:

29.5.1 Size of section used for stringers: ISMC-150

29.5.2 Size of section used for ‘N’ shaped bracings: ISMC-150

29.5.3 Length of stringer in mm: 3000 mm

29.5.4 Width of stringer in mm:

29.5.5 Permitted play in degree along vertical plane in jointing the corresponding

stringer: 3 - 4 Deg

29.5.6 Detailed construction of supporting stools for conveyor frame: Shown in drg.

29.5.7 Size of section used for stools & tie: ISMC-125

29.5.8 Clearance in mm between bottom of return roller and ground: 600 mm



ECL Page 22

29.5.9 Clearance of stools from return belt edge in mm: 300 mm

29.6 Gear Box:

29.6.1 Make: New Allenberry

29.6.2 Type and size:

Tripple Stage

Reduction Helical -

CKC-400 (Fc)

29.6.3 Speed Ratio: 01:31.5

29.6.4 Output transmitting capacity: 300 KW

29.6.5 Service Factor: 2

29.6.6 Efficiency: 90%

29.7 Base Frame:

29.7.1 Section of joists used for frame: 300 mm

29.7.2 Section of bracing used: ISMC-150

29.7.3 Nos. & size of foundation bolts: M36

29.7.4 Clearance in mm from ground to bottom of drive drums: 600 mm

29.7.5 Whether scraper is provided in between drive drums: Yes

29.7.6 Provision of machined faces to seat motors, gearbox and bearing housings: Provided

29.8 Overall width & height of drive unit in mm:

29.9 Loop take-up:

29.9.1 System: Horizontal

Motorized Winch

29.9.2 Length of loop take-up unit:

29.9.3 Construction of Guide channels for moveable take-up trolley: As required

29.9.4 Provision of wire netting on either side of loop take-up frame: Providee

29.9.5 Motor KW & Voltage: 15 KW - 550V

29.10 Decking Plate:

29.10.1 Type of sheet used: Formed MS Sheet



ECL Page 23

29.10.2 Thickness under loading point & rest portion: 3.15 mm

29.11 Skirt Plate:

29.11.1 Thickness of skirt plate: 12 mm

29.11.2 Length of skirt plate in each loading point: 5 Mtr

29.11.3 Detailed construction of skirt plate: MS plate with

Neoprene Strip

12x100

29.11.4 Clearance from belt surface to the skirt plate: 50 mm

29.11.5 Thickness & width of neoprene strips: 12 mm x 100 mm

29.11.6 Fixing arrangement of neoprene strips to skirt plate: Bolting

29.12 Belt Cleaning arrangement:

29.12.1 Type of scraper at discharge drum: Spring Loaded

29.12.2 Thickness & width of neoprene strips used: 12 x 100 mm

29.12.3 Detailed construction of ‘V’ type 2 Nos. plough scrapers used on the return

belt near tail end and other near snub drum forming part of the take-up unit: Provided

29.13 Coupling:

29.13.1 Type: Flexible Geared

Coupling

29.13.2 Make: Fenner

29.13.3 Size: FGC-11

29.13.4 Service Factor: 2

29.14 Fluid Coupling:

29.14.1 Type: Aqua field

29.14.2 Make: Prembill

29.14.3 Size: SDFC 580

29.14.4 Rating: 300 KW

29.15 Anti Roll Back Device:

29.15.1 Type: Sprag



ECL Page 24

29.15.2 Make: Precision Pragmatic

29.15.3 Size: RCSI-90

29.15.4 Capacity in Kg-M:

29.16 Pull Cord Switches:

29.16.1 Type: Manual

29.16.2 Make: Mine Line

29.16.3 Spacing & Nos: 20 Mtr

29.17 Belt Sway Switches:

29.17.1 Type: Auto Reset

29.17.2 Make: Mine Line

29.17.3 Spacing: 40 Mtr

29.18 Loud Hailing Communication System:

29.18.1 Type: Telephone type

29.18.2 Make: MIMEC

29.18.3 Spacing: 20 Mtr

29.19 Motor:

29.19.1 Make: Marathon

29.19.2 Type of Motor: Squirrel Cage

Induction Motor

Foot Mounted FLP

29.19.3 Quantity (Nos.): 2 Nos.

29.19.4 Rating in KW: 300 KW

29.19.5 Rated Voltage (V): 6.6 KV

29.19.6 Rated Current (A): 35 AMP

29.19.7 Approx. operating speed (RPM): 1490 RPM



ECL Page 25

29.19.8 Class of Insulation: F

29.19.9 Class of Rating: S1

29.19.10 Starting Torque (Kg-M): 2 x FLT

29.19.11 Full Load Torque (Kg-M): 196 KgM

29.19.12 Type of Enclosure: TEFC

29.19.13 Acceptance variation in voltage & frequency: 10% in voltage &

5% in frequency

29.19.14 Maximum starting current (Amps): 6 x FLC

29.19.15 Time taken by the motor to normal operating speed (in seconds): 30 sec

29.19.16 Cable boxes: NA

29.20 Starter: Skid Mounted

29.20.1 Type: SKID MOUNTED

FLP

29.20.2. Quantity for A & B A) 1 no. B) 1 no.

29.20.3 Rating (KW) for A & B 300 KW

29.20.4 Rated Voltage for A & B 6.6KV

29.20.5 Rated Current for A & B

29.20.6 Enclosure: FLP

29.20.7 Mounting: Skid Mounted

29.20.8 Type of contactor & its rating & duty: Vaccuam Contactor

- 400 Amp

29.20.9 Voltage: 6.6 KV

29.20.10 Protection: Provided

29.20.11 Provision of sequence operation: Provided

29.20.12 Remote control circuit: Provided

29.20.13 Cable boxes: Provided

29.20.14 Facility of coupling/connecting/monitoring console: Provided

29.20.15 Earthing system: Provided

29.20.16 Timer for staggered start: Provided

29.20.17 Weights of the following:

29.20.18 Drive unit consisting of Motor, reduction gears, drive drums, couplings, anti

roll back device, brakes, common base frame, etc: 24 M.T

29.20.19 Discharge drum assembly: 2.8 MT

29.20.20 Tail drum assembly: 1.8 MT

29.20.21 Take-up assembly: 1.8 MT

29.20.22 Weight per metre run of conveyor excluding belts: A) 215 Kg/Mtr B)

225 Kg/Mtr



ECL Page 26

Annexure ‘B’ =/ LETTER OF PERFORMANCE GUARANTEE/=

Messer’s --------------------------- a company having its registered office at -------------------------------------------

(hereinafter called the said seller) has entered into an agreement no.-------------dated------------- (hereinafter called

the said contract) with Eastern Coalfields Limited, having its registered office at Sanctoria, Post – Disergarh, Dist –

Burdwan (West Bengal)(Pin-713333) (hereinafter called the purchaser) to supply equipment on the terms and

conditions contained in the said contract.

(1) It has been agreed that hundred percent (100%) payment of the value of the equipment will be made to the said

seller in terms of the said contract on the said seller furnishing to the purchaser a Bank Guarantee for the sum of Rs.-

----------(Rupees------------------------------)equivalent to -------% (------percent) of the value of the equipment

supplied by the said seller, as security for the due and faithful performance of the terms of the said contract and

against any loss or damage caused to or would be caused to or suffered by the purchaser by reason of any breach by

the said seller of any of the terms or conditions contained in the said contract.

The ------------------Bank having its office at --------------------------------has at the request of the said seller

agreed to give the guarantee hereinafter contained.

(2)We -------------------------Bank do hereby undertake to pay the amounts due and payable under this guarantee

without any demur, merely on a demand from the purchaser stating that the amount claimed is due by way of loss or

damage caused to or would be caused to or suffered by the purchaser by reason of any breach by the said seller of

any of the terms or conditions contained in the said contract or by reason of the said seller’s failure to perform the

said contract. Any such demand made on the Bank shall be conclusive as regards the amount due and payable by the

Bank under this guarantee. We shall not withhold the payment on the ground that the said seller has disputed its

liability to pay or has disputed the quantum of the amount or that any arbitration proceeding or legal proceeding is

pending between the purchaser and the said seller regarding the claim. However, our liability under this guarantee

shall be restricted to an amount not exceeding Rs.-------------------

(3) We ------------------------- Bank, further agree that the guarantee herein contained shall come into force from the

date hereof and shall remain in full force and effect during the period that would be taken for the performance of the

said contract and that it shall continue to be enforceable till at the dues of the purchaser under or by virtue of the said

contract have been fully paid and its claims satisfied or the purchaser certifies that the terms and conditions of the

said contract have been fully and properly carried out by the said seller and accordingly discharges the guarantee.

Unless a demand or claim under this guarantee is made on us in writing on or before the ------------(date)--------------

(month) from the date of the Bank Guarantee, we shall be discharged from all liabilities under this guarantee

thereafter.

(4) We ----------------(Bank), further agreed with the purchaser that the purchaser shall have the fullest liberty

without our consent and without affecting in any manner our obligations hereunder to vary any of the terms and

conditions of the said contract or to extend time of performance by the said seller from time to time or to postpone

for any time or from time to time any of the powers exercisable by the purchaser against the said seller and to

forbear or enforce any of the terms and conditions relating to the said contract and we shall not be relieved from our

liability by reason for any such variation or extension being granted to the said seller or for any forbearance act or

omission on the part of the purchaser, or any indulgence by the purchaser, to the said seller or by any such matter, or

thing whatsoever which under the law relating to sureties would but for this provision have effect of so relieving us.

The Bank further agrees that in case this guarantee is required for a longer period and it not extended by the Bank

beyond the period specified above, the Bank shall pay to the purchaser the said sum of Rs ------------or such lesser

sum as may then be due to the purchaser and as the purchaser may demand.

(5) We -------------- Bank, lastly undertake not to revoke this guarantee during its currency except with the

previous consent of the purchaser, in writing.

(6) The Bank has under its constitution power to give this guarantee and Mr. ……………,

……………….(designation ), who has signed it on behalf of the Bank has authority to do so.

(7) This Bank guarantee will not be discharged due to change in the constitution of the Bank or the said seller.

Dated ……………… day of …………..20

For …………………………. Bank

(Signature of the authorized person

For and on behalf of the Bank)