ML20246H959

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Qualification Tests of Electrical Cables in Simulated Steam-Line-Break & LOCA Environ
ML20246H959
Person / Time
Site: Indian Point Entergy icon.png
Issue date: 12/31/1978
From:
FRANKLIN INSTITUTE
To:
Shared Package
ML093440922 List:
References
F-C4997-1, NUDOCS 8905160244
Download: ML20246H959 (10)
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Text

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1 .

I Qualification Tests of Electrical Cables I

in a Simulated Steam-Line-Break and Loss-of-Coolant-Accident Environment FRC Final Report F-C4997-1 Prepared for American Insulated Wire Corporation Pawtucket, Rhode Island 1

December 1978 l

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. 00. Franklin Research Center l l

os A Division of The Franklin Institute he % FrerMn Parkwy. PNia Pa. 19103 (213) M81000

$$0DII$o$ $5000286 PNV G

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F-C4997-1

1.

SUMMARY

OF SALIENT FACTS FRC Project Numbe. : C4997 Test Program Conducted for:

American Insulated Wire Corporation Central Asanne and Freeman Street Pawtucket, Rhode Island 02862 Test Program Conducted and Reported by:

Franle14n Research Center 20th and The Parkway Philadelphia, PA 19103 Date of Test Program:

November and December 1978 Objective of Test Program:

Demonstrate performance of electrical cables for Class 1E service in a nuclear power geners-i: '. station in accordance with test guidelines presented in IrI.J. Scandards 383-1974* and 323-1974.,

Equipment Tested:

Eighteen specimens of 1/C #16 AWG electrical cable insulated with 30 nil of EPDM insulation. Some specimens contained in-lint splice?

prepared with Raychem ThernofitO WCSF-N heat-shrinkable tubing.

Elements of Test Program:

A thermal aging program van perforned by the client in v! tr a the j cpecimens were divided into three groups of six cables each.

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  • It.r.r S td 383-1974, "1EEE Standard for Type Test of Class II Elcetric Cablas, Field splices, and Connections for Nuclear Power Generating Stations," The Institute of Electrical and Electronics Engineers, Inc. ,

New York, NY, 1974.

IEEE Std 323-1974, "IIII Star.dard for Qualifying Class IE Equipeent for Nuclear Power Generating Stations," The Institute of Electrical and Electronics Enginears, Inc. , New York, NY,1974.

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'One group remained unaged; one~ group *vas aged for.200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> at

- 150*C . (302*F); and one group was aged for 600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> at 150*C (302*F).

' All specimens were subjected to an air-equivalent dose of 50 Mrad

, from a cobalt-60 source sad subsequently to a 34-day steam / chemical -

, spray (S/C) exposure ' designed to simulate a combined steam-line-In break (SLB) and loss-of-coclant-accident- (LOCA) environment. The S/C exposure included a peak temperature / pressure of 381*F/58 psig*

which occurred 45 seconds after initiation of the S/C exposure.

The cablas were electrically energized with 600 Vsc sad 10 A throughout the S/C exposure. Following the S/C exposure, the cables were subjected tola mandrel-band test at 40' times the cable '

diameter and to a high potential-withstand test at 80 Vac per mil of insulation.

3.

Summary of Test Results:

The cables r==e4=ad electrically energized throughout the 34-day S/C exposure and withstood a post-test, high-potential / bend test.

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  • The pressure was increasin's at 45 seconds and continued rising to a peak of 112 psig at 140 seconds ET.

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F-C4997-1 1 L j l

2. IDENTIFICATION OF CABLES TESTED  !

The test specimens consisted of eighteen 1/C #16 AWG electrical cables insulated with 30 mil of EPRi insulation which are identified in Table 1. For ease of identification, the client separated the specimens into two groups of nine esbles each which were labelled group "A" and group "3". The length of each cable was approximately 30 ft. Some specimens contained in-line sp?. ices of Baychem ThermofitO WCSF-N heat-shrinkable tubing.

Table 1. Identification of Test Specimens Number of Hours Cable Assembled Thermally Aged Number WithSplice(,) at 150*C (302*F)(b)

C4997-Al No Unaged C4997-A2 No Unaged C4997-A3 Yes Unaged C4997-A4 No 200 C4997-A5' No 200 C4997-A6 Yes *200 C4997-A7 No 600 C4997-A8 No 600 C4997-A9 Yes 600 C4997-B1 No Unaged C4997-B2 No Unaged C4997-B3 Yes Unaged C4997-B4 No 200 C4997-B5 No 200 C4997-B6 Yes 200 C4997-B7 No 600 C4997-B8 No 600 C4997-B9 Yes 600 Notes: (a) In-line splices were prepared by the client and were described as being insulated with Themofit@WCSF-N heat-shrinkable tubing manufactured by Raychem Corpora-tion, Menlo Park, CA.

(b) The specimens were thermally aged by the client.

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s Ctualification Tests of Class IE Electric Cables in a Simulated Steam-Line-Break and Loss-of-Coo ant Accicent Environment Final Report . This report is an excerpt of Tranklin Research F-C4969-1 Center report T-C4969, prepared for the Anaconda Company, July 1978.

I The Anaconda Company July 1979 ,

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T-Cb1E9 1 1 Table 1. Cable Specimens and Electrical Loading i

NOMINAL MEASURED REQUIRID CABLE- , . CUTSIDE OUTSIDE ELECTRICAL SPECIMEN DIAMETER DIAMETER LOADING NUMBER CABLE DESCRIPTION #' (in ) '-. (in) (Vac)/(A)

Category 32 500 Vac TR-IP Power 5 0.150 440/25 Control Cable, 1/C No.

12 AWG, 7/W, Tinned Copper Conductor 30-Mil Insulation Thickness Length a 30 ft 32.1 0.160 32.3 0.165

. Category 36 500 Vac, Instrumentation 0.350 480/10 Cable, 2/C No.16. AWG, .

7/W, Tinned Copper Con-ductor, 25-mil T1ame Re-sistant, Cross-Linked Ethylene Propylene Rubber Insulation (TR-EP).

Twist, Asbestos / Mylar Tape Tinned Copper Drain Wire, Aluminum / Mylar Tape, 45-ell Chlorinated Polyethylene Jacket'(CPE)

' Length a 30 ft 36.1E 0.335 36.3 0.300 Categorv 37 37.1E 500V Tlame-Guard Control 0.597 0.560 480/10 j Cable, 7/C No. 14 AWG, i 7/W, Tinned Copper Con.

ductor, 30-eil Tlame Resistant, Cross-Linked Ethylene Propylene Rubber Insulation (TR-EP), l Cabled, Mylar / Asbestos Tape, 60-mil Chlorinated Polyethylene Jacket (CPE)

Length a 30 ft Notes: " Cable descriptions - '

nominal dimensions were provided by

  • b The Anaconda Compa / ,

Conductor material was opper in all cases.

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