ADHESION

Between carcass and cover (min.) KN/m. 4.50

Between adjacent plies (min.) KN/m 5.25

FIRE PERFORMANCE & ANTISTATIC PROPERTIES

Flame test: Duration of flame with cover sec. 45 sec. (max.) for 6 samples 15 sec. (max.) for individual

No flame reappearance in air current (IS0340) (Cl.4.2.2.2)

Drum friction test (max.) °C 400 )CAN/CSA#M422- Electrical resistivity # 300 X 10 ) M87 (Type-C)

TROUGHABILITY

Min. (35°) ----- 0.11

COVER PROPERTIES UNIT		ACCEPTANCE VALUES
Type of cover grade ------	FR (CAN/CSA-M422-M87)
Type C.
Tensile strength (min.) MN/m²		17.0
Min. elongation at break %	400
Tensile strength after aging		% change	+10 to -20 of initial value
Elongation at break after aging %		+10 to -25 of initial value
Abrasion loss (max.) mm³	175
Angular tear strength (min.) (ASTM D624) N/mm.			30
Hardness (IS 3400) SHA	70± 5°A

MARKINGS

The belt shall be marked at intervals of max.12 meters on the carrying surface as follows:

1.Manu. name and trade mark, if any

2.Fabric designation

3.Belt designation

4.Character identifying the grade of rubber cover used.

5.Last two figures of the year of manu.

6.Number of the standards used.

APPLICABLE STANDARDS

1.IS 1891 Part-I

2.CAN/CSA #M422-M87 (Type C)

3.ISO 340 (Cl.4.2.2.2)

4.ASTM D 624

5.IS 3400

Note: PDI will be done as per approved QP prepared on the basis of the technical data sheet / specified standards furnished above. NTPC will have option to get the technical data such as fire resistant property, cover property, adhesion property etc checked through testing of separate samples taken from any part of the belt in a govt. / govt. approved laboratory or its own laboratory to counter check that the required properties are maintained in the belt being supplied under the PO by the vendor. Technical data obtained through such testings will be stored in the data bank and during review if any deviation is noticed in a particular lot/ batch of the belt, the supplier of that lot/batch will be debarred from the vendor list for future supply of conveyor

QUALITY CHECKS:

As per attached QAP

6.0 Prospective bidders from U.P. State are compulsorily required to provide TIN number at the time of purchase of bidding

documents.

7.0 Qualifying Requirements for Bidders:

Qualifying requirements:

1.0The bidder should be manufacturer of NN/EP Conveyor Belt of width 1000 mm or higher & strength 800 kN/Mtr and above. The applicant should have supplied NN/EP conveyor belt of width 1000mm or higher and strength 800 kN/Mtr and above, to actual user(s) or to main contractors of bulk material handling plant package having conveyors.

1.1The bidder should have Conveyor production unit with following

facilities:

i.The production unit should have BANBURY closed chamber mixing facility in operating condition with auto set time & temperature control, for initial input including rubber, at his own manufacturing unit. Capacity of at least one such machine should be fifty (50) Ltr or above.

ii.The Production unit should have three roll or above calendaring machine, to draw cover rubber in a single sheet.

iii.The production unit should have mechanized stretching facility for pre-tensioning of fabric plies during belt building.

iv.The production unit should have a transparent standard practice of traceability of end product (belt) with raw materials.

v.The production unit should have a standard practice of rheological testes.

vi.The production unit should have a separate internal Quality Assurance (QA) wing with Rubber Technologist in regular payroll.

vii.The production unit should have following testing/measurement facilities:

a.Drum Friction Test Arrangement as per CAN/CSA

b.Abrasion Resistance Test apparatus & Standard Rubber Sample for cover rubber as per DIN:53516

c.Arrangement for Flame Test as per ISO 340

d.Arrangement for Electrical Surface Resistance Test as per CAN/CSA

e.Troughability Measuring arrangement with Measuring Instruments

f.Humidity & Temperature Controlled testing room / chamber for samples conditioning.

g.Rheological Test Instrument(s)

h.Tensile Strength for belt & cover as per IS: 1891

i.Angular Tear Strength Test for cover as per ASTM D624 Type C

j.Oven for ageing Test

2.0 The bidder should have executed any one of the following Similar Works				In India in the preceding seven years as on the date of
opening of Techno-Commercial proposal:
One Work of value not less than Rs. 60.45 lacs	(Rupee	Sixty lakh	and Forty five thousand		only)
OR
Two works of value not less than Rs.37.78 lacs	(Rupee	Thirty Seven	lakh and	Seventy eight	thousand only) each.
OR

Three works of value not less than of Rs. 30.22 lacs (Rupee Thirty lakh and Twenty two thousands only) each.

Note:

2.1#Similar# works means any work which includes # Supply of CONVEYOR BELT (NN/EP) of minimum width 1000 mm within last 5 years from the date of application for NIT."

2.2The work #executed# mentioned above means the bidder should have achieved the criteria specified above, even if the total contract is started earlier and/or is not completed/ closed.

2.3In case of orders under execution, the value of work executed till the date of opening of Techno-Commercial proposal as certified by the Client shall be considered.

3.0The average annual turnover of the bidder in the preceding three financial years as on the date of opening of

Techno-Commercial proposal should not be less than Rs.75.56 lakh ( Rupee Seventy five lakh and Fifty Six thousand only ). Note:

3.1While computing the annual turnover other income shall not be considered.

3.2In case where audited results for the last preceding financial year are not available certification of financial statements from a practicing Chartered Accountant shall be considered acceptable.

8.0Issuance of Bidding Documents to any bidder shall not construe that bidder is considered qualified.

9.0 NTPC reserves the right to reject any or all bids or cancel/withdraw the NIT for the subject package without assigning any reason whatsoever and in such case no bidder/intending bidder shall have any claim arising out of such action.

10.0Address for Communication