GO2-83-333, Final Deficiency Rept Re Failure of Temp Control Modules WMA-TS-12A & 12B During Qualification Testing (Condition 238).Initially Reported on 830310.Printed Circuit Board Traces Replaced W/Wire Jumpers.Condition Not Reportable

Final Deficiency Rept Re Failure of Temp Control Modules WMA-TS-12A & 12B During Qualification Testing (Condition 238).Initially Reported on 830310.Printed Circuit Board Traces Replaced W/Wire Jumpers.Condition Not Reportable

ML20069L358
Person / Time
Site:	Columbia
Issue date:	04/12/1983
From:	Carlisle C WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, GO2-83-333, NUDOCS 8304280177
Download: ML20069L358 (2)

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Washington Public Power Supply System P.O. Box 968 3000 GeorgeWashingtonWay Richland, Washington 9,93,62,g509) 3J2-go00

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%Doc'ket No. 50-397 fiEGE; April 12, 1983 G02-83-333 Mr. J. B. Martin Regional Administrator U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, Calfornia 94596-

Subject:

. NUCLEAR PROJECT N0. 2 110CFR50.55(e) NON-REPORTABLE CONDITION #238, TEST SPECIMEN FAILURE

Reference:

Telecon QA2-83-056, dated March 10, 1983, L.C. Floyd to J. Elin.

In accordance with the provisions of 10CFR50.55(e), your office was informed, by telephone, of the above subject condition on March 10, 1983. Attachment I provides the Project's final report on the subject non-reportable condition.

If you have any questions regarding this condition, please contact Roger Johnson, Project QA Manager, WNP-2, at (509) 377-2501, extension 2712.

.C Program Director, WNP-2 LCF/kd

Attachment:

Final Report cc: W.S. Chin, BPA A. Forrest, Burns and ROE - HAPO N.D. Lewis, NRC J. Plunkett, NUS Corp.

A. Toth, NRC Resident Inspector

.WNP-2 Files /917B/917Y PDR ADOCK 05000397 S PDR

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l Attachment I WASHINGTON PUBLIC-POWER SUPPLY SYSTEM NUCLEAR PROJECT NO. 2 DOCKET.NO. 50-397 LICENSE CPPR-93 10CFR50.55(e) CONDITION #238 TEST SPECIMEN FAILURE _i FINAL REPORT

. DESCRIPTION OF DEFICIENCY

-Temperature control modules WMA-TS-12A and 128 failed during qualification testing. -The printed circuit board traces in the control module overheated and sep.arated when subjected to the manufacturer's rated test current of 10 amperes.

SAFETY IMPLICATION Temperature control modules WMA-TS-12A and 12B control electric heaters WMA-

'EHC-51A and 518 within the HVAC Unit for the main control room and cable spread-  ;

.ing room. During normal plant operation, the control room equipment and light-

.ing loads are such that the heaters are not required to operate. Only at such

time that the plant is down due to refueling, etc., and the control room equip -

ment heat loads are reduced does the heating units need to operate. The units- ,

are Class 1E only because.they are a portion of the overall HVAC Unit for the j control room. Since the component is not required for maintenance of a safety) related function, the failure of the control module is considered to be a non-'

- reportable deficiency.

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p CORRECTIVE ACTION The steady state 10 amperes of ' current applied during ' qualification testing  !

was higher than the 6.5 amperes inrush and .47 amperes holding current that l is conducted during system operation. However, the Supply System chose to l replace the printed circuit-board traces with wire jumpers to assure current

': -capability.

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