ML17275A772

Interim Deficiency Rept Re Nonseismic Class 1 Const & Installation of Control Room Cabinet for Digital electro- Hydraulic Turbine Generator.Failure During Seismic Event Could Cause Damage to safety-related Equipment

ML17275A772
Person / Time
Site:	Columbia
Issue date:	12/15/1980
From:	Matlock R WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, GO2-80-289, NUDOCS 8101050089
Download: ML17275A772 (6)

Text

REGULATOI ~ INFORMATION DISTRIBUTION QTEM (RIBS)

ACCESSION NBR:81010S0089 DOC ~ DATE! 80/12/15 NOTARIZED! NO DOCKET FACIL:SO 397 HPPSS Nuclear Projects Unit 2~ Washington Public Powe 05000397 AUTH, NAME AUTHOR AFFILIATION MATLOCKPR ~ Washington Public Power Supply System P(iI RECIP ~ NAME RECIPIENT AFF II.IATION ENGELKENgR ~ HE Region .Sr San Franc'iscoi Office of the Director

SUBJECT:

Interim deficiency rept re non seismic Class 1 const- 8 installation of control room cabinet for Digital Electro Hydraulic turbine generators Failure during seismic event could cause damage to safety related equipments DISTRIBUTION CODE: B019S, COPIES RECEIVED:LTR TITLE: Construction Deficiency Report (10CFR50.55E)

ENCI. 1 SIZES NOTES:PM: 2 copies of all material 05000397 RECIPIENT COPIES REC IPIENT COPIES IO CODE/NAME LTTR ENCL IO CODE/NAME LTTR ENCL ACTION: A/D LICENSNG 00 1 1 YOUNGBLOODpB 05 1 RUSHBROOKFM ~ 06 1 LYNCHED'7 1 1 INTERNAI: AD/RC I/IE 17 1 1 AEOD 18 1 1 ASLBP/J ~ HARD 1 1 0/DIR HUM FAC15 1 1 OIREOIV OF. LIC 1 1 EOO 8 STAFF 19 1 1 EQUIP QUAL BR11 1 1 HYO/GEO BR 22 1 1 IaE 09 1 1 LIC QUAL BR 12 1 1 MPA 20 1 1 NRC POR 02 1 OELO 21 1 1 P REV 13 1 1 QA BR 10 1 1- REG FILE 01 1 1 RUTHERFORDFH ~ IE 1 1 OEV 21 1 1 EXTERNALG ACRS ie 16 16 I.P OR 03 1 1 NSIC 08 1 JAN 8 1981 TOTAINUMBER OF COPIES REQUIRED: LTTR ~A. ENCL

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Washington Public Power Supply System A JOINT OPERATING AGENCY R~

S P. O. BOX 988 3000 GCO. WASHINGTON WAY RICHLAND. W*SHINCSON Og352 PHONO (50Ql 375 5000

,5 Nuclear Regulatory Commission December 15, 1980 Region V G02-80-289 Suite 202, Walnut Creek Plaza 1990 North California Boulevard Walnut Creek, California 94596 Attention: Mr . R. H. Engelken, Director Gentlemen:

Subject:

WPPSS NUCLEAR PROJECT NO. 2 DOCKET NO. 50-397 REPORTABLE DEFICIENCY - 10CFR50.55 e I

In accordance with the provisions of 10CFR50.55(e), your staff was informed by telephone on November 14, 1980 of a reportable deficiency relative to the non-seismic Class I construction and installation of the Control Room cabinet housing the driving electronics for the Digital Electro-Hydraulic (DEH) turbine generator controls supplied by Westinghouse.

Attached is our interim report on this deficiency. A final reoort will be forwarded when suitable corrective actions have been identified.

Please contact us if you have any additional questions.

Very truly yours, R. G. MATLOCK WNP-2 Program Director

'GM:GWB:ir Attachment cc: JR Lewis - BPA ND Lewis - EFSEC, Olympia l-RE--Snaith - BER.NY V Stello - NRC AD Toth - NRC B Wood - NUS Corporation JJ 'Ctderber - BIIR WNP'g Fi 1 es c5

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l PASHINGTON PUBLIC POl'!ER SUPPLY SYSTEM DOCVET NO. 50-397 LICFNSF. NO. CPPR-93 REPORTABLE DEFICIENCY AND CORRECTIVE ACTION PPSS NUCLFAR PROilECT NO. 2 NON-SEISMIC CLASS 1 DEH CABINFT Descri tinn of Deficienc The llestinghouse Digital Electro-Hydraulic (DEH) .cabinets housing the f1ain Turbine Generator control electronics have'not been manufactured and installed to Seismic Class 1 requirements. "This is in violation of the requirements of Regu'latory Guide;-

1.29.'afet Im lications During a seismic event the non-seismic design of the DEH cabinet could-result in cabinet structure or mount failure. Failure could cause damage to safety-related equipment located in the Reactor Controls Bench Board mounted directly in front of the DEH cabinet. Damage to tie safety-related equipment could result in the loss of ability to safely shutdown the plant. In addition, DEH cabinet failure may do bodily harm to Control Poom personnel who may be in the immediate area.

Corrective Action Studies are in process to determine a suitable method of restraining

+he DEH cabinet during a seismic event. A ,'.nal report descr'.b-:ng the specific plant modifications will be forwarded when studies are complete.

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