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PAGE-33. TESTING LABORATORY CAPABILITY & PROCESS REQUIREMENT: TheTesting Laboratory shall have adequate facility for a Testing of 420 KN HVDC DISC

INSULATORS for +/- 800 KV SINGLE Y SUSPENSION STRING AND TRIPLETENSION. All the equipments used and measuring instruments shall be dulycalibrated. The Vendor shall have personnel / process qualification where applicableand shall maintain valid record of the same. The Testing Laboratory shall have enoughtrained crew to ensure smooth flow of work in addition to requisite handling facilities.

4. Handling Capacity: Testing Laboratory should have minimum handling facilities forhandling Disc Insulator strings. Handling equipment capacity should of minimum of 10MT capacity. Those who are not meeting this requirement, their offers are likely to berejected..5. Lead time: Offers shall indicate minimum and maximum lead-time required to

execute the orders for the tests indicated.

6..The order will be placed on Testing Laboratory depending on their position incomparative statement of original offer and subjected to their acceptance.

7. Price Comparison: Prices shall be considered on TOTAL COST BASIS (COST TOBHEL). TOTAL cost shall be worked out on price quoted including freight, excise duty,sales tax after taking out CENVAT and VAT Benefit, as applicable. The comparativestatement shall be worked out on TOTAL cost basis for ALL TESTS. The comparativestatement of the prices prepared on the reference date shall remain firm throughout theexecution period. The Foreign exchange rate will taken on the date of Techno

commercial bid opening.

A) The lowest price received against BHEL tender need not be commerciallylowest price (L1) and BHEL reserves the right to NEGOTIATE the same.

B) BHEL reserves the right/option to REFLOAT the tender if L1 price is not thelowest acceptable price to BHEL.

8. Ranking Price : For ranking the vendors as L-1, L-2, L-3.., the basis will be lowesttender value arrived at with quoted prices is the basis. As far as possible overall L1 willbe considered for award of contract.

9.Payment Terms: BHEL shall open an Irrevocable Letter of Credit in the name of theconcerned Lab. L/C will be opened before commencement of testing. After thecompletion of tests the representative of BHEL, witnessing the tests shall certify thesame and 100% amount shall be payable after the submission of 3 sets of originalreports in English language.

10.Selection Criterion : The lowest bidder meeting all the technical and commercialrequirements shall be awarded the contract. The bidder shall also send the details oftesting facilities including rating of the Test equipments, Test hall dimensions includingthe available Ground clearances, details of calculations of conductor surface gradientetc. Will be taken into account.

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PAGE-4

11. Risk Purchase Clause: If Testing laboratory is not able to carry out the tests asper terms of contract. BHEL has option to terminate the contract and get these tests

done in different labs at the risk and cost of the awarded Testing laboratory.

12. Arbitration: Settlement of dispute, if any arises, at anytime between the BHELand the Testing laboratory upon or in relation to or in connection with the Testinglaboratory , the same shall be referred to the sole arbitration of the Head of BHELunit or to person appointed by him. The award of the arbitrator shall be final andbinding on both BHEL and the Testing laboratory.

13. Legal Jurisdiction: In case of any legal proceedings, area of jurisdiction will beBangalore court only.

14.The tender not meeting any of the above conditions may not beentertained.

15.Clarification sought by BHEL during Technical & Commercial Evaluation:

In case BHEL asks for any clarification, the Testing Laboratory has to submit thesame within specified date otherwise the offer will be evaluated considering theclarifications, if any received, as on the specified date. No grace period or latesubmission is allowed.

16 . Contact person for Information :

General Contract related Queries

Name:Designation:Tel Nos.E-mail ID:Cell

Y. BABAU RAO

SDGM / INSUALTOR ENGG

080-22182322/091-080-23568973

[email protected]

+919449003936 (Y.Baburao)

- ALL TESTING LABORATORIES SHOULD QUOTE FOR TOTAL COST ONLY

AS PER ENCLOSED FORMAT IN PAGE NO 5 , 6 AND 7.

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P

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PAGE-8TENDER REFNO : INS ENGG/ HVDC TESTING - 01 /09-10.

TENDER NAME : TYPE TESTS ON 420 KN HVDC DISC INSULATOR STRINGSFOR +/- 800 KV HVDC TRANSMISSION LINE & SF6 PUNCTURE TEST ON DISCINSULATOR UNITS.

II. TECHNICAL SPECIFICATION

SPECIFICATION FOR CARRYING OUT HV& POLLUTION TESTS ON DISCINSULATOR STRINGS & SF6 PUNCTURE TEST DISC INSULATOR UNITS

A. TEST OBJECT:DISC INSULATOR STRINGS FOR 800 KV HVDC TRANSMISSION LINE.

2. String Configuration:

2.1 800 kV Single Y Suspension string comprising of 2 X 67 units (2 x 45

units in V portion & 2 X 22 units in II portion) of 420 kN disc insulators andhardware fittings suitable for six bundle ACSR LAPWING conductor inaccordance with assembly drawing number ITP/800KV- SYS/00.

Approximate weight of the string (Insulator +fittings) 3000 kg

2.2 +/- 800 kV Triple Tension string consisting of 3 x 64 units of 420 kN discinsulators and hardware fittings suitable for six bundle ACSR LAPWINGconductor in accordance with assembly drawing number ITP/800KV-TT/HVDC/00.

Approximate weight of the string (Insulator +fittings) 4500 kg

3. Tests:3.1 D.C Voltage withstand Test (Wet)

The test shall be carried out in accordance with IEC 60060-1.Specified Test Voltage : + 900 kV

3.2 Switching Surge Voltage withstand Test (Wet)The test shall be carried out in accordance with IEC 60383-2 & IEC 60060-1 under wetcondition.Specified Test Voltage : 1850 kVpeak.

3.3 Lightning Impulse Voltage withstand Test (Dry)The test shall be carried out in accordance with IEC 60383-2 & IEC 60060-1 under Drycondition.Specified Test Voltage : 2250 kVpeak

3.4 D.C Corona Inception & Extinction Test (Dry):The complete insulator string with insulators, fittings & conductor bundle shall beassembled in the test hall in accordance with the relevant drawing. The string whensubjected to a DC voltage under Dry condition shall have a corona extinction voltage ofnot less than 880 kV (positive polarity) under conductor surface gradient of 22 kV/cm.

There shall be no evidence of visual

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PAGE-9

corona on any part of the test sample (insulators & fittings). For information, the CoronaInception voltage shall also be recorded. The test voltages shall be corrected toatmospheric conditions in accordance with IEC .

3.5 Radio Interference Test (Dry) :

The test shall be carried out in accordance with IEC 60437 under Dry condition. Thearrangement of the test object shall be similar to Corona test described in serial number3.4. The string shall be subjected to a DC voltage of 880 kV (positive polarity) underconductor surface gradient of 22 kV/cm & the Radio noise measured shall be lesserthan 1000 micro Volts (60 dB) at 1 MHz.

3.6 Artificial Pollution Withstand Test:

The test shall be carried out in accordance with IEC 61245.

3.6.1 Test Parameters:

3.6.1.1 Test Method Solid Layer, Section 43.6.1.2 Test Procedure Section 4.53.6.1.3 Specified SDD 0.085 mg/sq.cm3.6.1.4 Specified Test Voltage 800 kV (-ve polarity)3.6.1.5 Test Duration 100 minutes

5. Arrangement of test object:

5.1 D.C Voltage withstand Test (Wet)Switching Surge Voltage withstand Test (Wet)

Lightning Impulse Voltage withstand Test (Dry)In accordance with the Assembly drawing enclosed. Lapwing conductor of required

length shall be used for testing Tension string. In case of Suspension string Aluminiumtubes/rods ofrequired diameter may be used for conductor simulation.

5.2 RIV & Corona Test

In accordance with the Assembly drawing enclosed. Lapwing conductor of necessarylengthshall be used for testing Tension string. In case of Suspension string Aluminium

tubes/rods ofrequired diameter may be used for conductor simulation. Required ground clearance

forachieving Conductor surface gradient of 22 kV/cm shall be maintained during testing.

5.3 Artificial Pollution TestY Suspension String shall be erected exactly in line with the drawing. In case of

practical difficulties in the erection of Tension String in horizontal position, the sameshall be tested in Vertical/ Inclined position using suitable support structure. The angleof inclination shall be indicated in the offer. Necessary ground clearance in accordancewith IEC 61245 shall be ensured. Conductor simulation is not required during testing.

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PAGE-10

B. TEST OBJECT:

420 KN EMS HVDC DISC INSULATOR

Drawing number EL DG 3 980 44 00200/A2

1. Tests: SF6 Puncture Withstand Test

1.1 Description of the Test:10 samples of Disc insulators described above shall be subjected to SF 6 Puncturewithstand test in accordance with Clause 16 of IEC 61325.

1.2 Specified Test withstand Voltage: + 240 kV

1.3. Arrangement of test object:Shall be in accordance with IEC 61325.

C) TEST REPORT:

The report of test carried out shall include details of the test object, test procedure, testresults including photographs etc. The report shall be in English language.

D) TEST SCHEDULE

It is required to commence the above tests during February-March 2010. The laboratoryshall inform BHEL in advance regarding the following.

Latest date for delivery of Test objects at the test laboratory.Date of Preparation of test samples.Date of commencement of testing.Date of completion of all the tests.Date of submission of test report.

E) OTHER SCOPE OF WORK :

The test lab shall arrange the following:

Opening the packing and assembling insulators & hardware in accordance withthe drawings submitted by BHEL

Installation of strings in the test hall & carrying out tests in accordance with thespecification

Dismantling the tested objects & repacking them in case the samples are reimported

Submission of test report

Assistance for obtaining Visa for our engineers witnessing the tests.

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PAGE-11

F) DISPOSAL :

The samples may have to be re imported after the completion of testing. In case reimportation is not required, the laboratory shall issue a certificate of destruction for

closing the customs formalities in India.

G) PRICE :

The test laboratory shall quote LOWEST price for carrying out HV & Pollution Tests onstrings & SF6 puncture test on single units. The test samples will be delivered at the testlaboratory at our cost. The price shall also include local taxes if any.

H) PAYMENT TERMS:

BHEL shall open an Irrevocable Letter of Credit in the name of the concerned Lab. After

the completion of tests the representative of BHEL, witnessing the tests shall certify thesame and 100% amount shall be payable after the submission of 3 sets of originalreports in English language.

I) BHELs SCOPE:

BHEL will arrange to dispatch the required number of test samples & deliver the sameat the test laboratory before the commencement of testing at our cost. We will alsoarrange to Re Import the samples, if required, at our cost. L/C will be opened before thecommencement of testing.

J) SELECTION CRITERION:

The lowest bidder meeting all the technical and commercial requirements shall beawarded the contract. The bidder shall also send the details of testing facilities includingrating of the Test equipments, Test hall dimensions including the available Groundclearances, details of calculations of conductor surface gradient etc.

K) CLARIFICATIONS:

Any Clarifications required may please be sent to the following [email protected] +919449003936 (Mr. Y. Babu Rao)

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