ML17275A771

Interim Deficiency Rept,Originally Reported on 801114,re Overloads on Supports for Spray Pond Piping.Caused by Hardware Design Error.Review of Original Design Margins to Be Completed by 801212

ML17275A771
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, GO2-80-290, NUDOCS 8101050013
Download: ML17275A771 (6)

Text

REGULATOR INFORMATION DISTRIBUTION ITEM (RIDE>

t ACCESSION NBR:8101050013. DOCBDATE: 80/12/15 NOTARIZED: NO DOCKET FACIL:50 397 NPPSS Nuclear ProJectE Unit 2i Washington Publ fc Powe, 05000397 AUTH',NAME AUTHOR AFFILIATION MATLOCKiR,G, washington Public Power Supply System RECIP ~ NAME RECIPIENT AFFILIATION I ENGELKENERBHB Region Si San'ranciscoi Office of the Director

SUBJECT:

Interim deficiency r eptEorfqfnally reported on 801110ire overloads on suppor ts for spray pond pjpfng.Caused by hardware design error, Review of orfgfnal design margins to be completed DISTRIBUTION CODE: BOISS by 801212; COPIES RECEIVED:LTR TITLE: Construction Deficiency Report ANGL (10CFR50.55E) i SIZE:

NOTES:PM! 2 copies of all material. 05000397 RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL ACTION+. A/D LICENSNG OQ 1 YOUNGBLOODEB 05 1 1 RUSHBROOKEM ~ 06 1 1 LYNCHED'7 1 1 INTERNAL: AD/RC I/IE 17 1 AEOD 18 1 1-ASLBP/J ~ HARD 1 1 D/DIR HUM FAC15 1 1-DIREDIV OF LIC 1 1 EDO 8 STAFF 19 1 EQUIP QUAL BR11 1 1 HYD/GEO BR 22 1 1 IaE 09 1- 1 LIC QUAL BR 12 1 1 MPA 20 1 1 NRC PDR 02 1 1 OELD 21 1 1 REV 13 1 1 QA BR ig 1 1 REG F ILE 01 1 1 RUTHERFORDEN ~ IE 1 1 DEV 21 1 1 EXTERNAL: ACRS 16 16 ie LPDR 03 1 1 NSIC 08 1 JAfl .8 1981 TOTAL NUMBER OF COPIES REQUIRED: LTTR ~ ENCL

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Washington Public Power Supp'ly System A JOINT OPERATING AGENCY P. 0. BOX 988 3000 GSO. WAS~>NOVO~ WAV R>one*No. W*se>Noto~ 99353 PHONC (509) 375 5000 Nuclear Regulatory Commission December 15, 1980 Region V G02-80-290 Suite 202, Walnut Creek Plaza 1990 North California Boulevard Walnut Creek, California 94596 Attention: Nr. R. H. Engelken, Director Gentlemen:

Subject:

WPPSS NUCLEAR PROJECT NO. 2 DOCKET NO. 50-397, CPPR-93 POTENTIAL'EPORTABLE DEFICIENCY - 10CFR50.55 e In accordance with the guidelines established for the reporting of 10CFR50.55(e) conditions, your staff was informed by telephone on November 14, 1980 of a "Potentially Reportable" condition regarding overloads on supports for spray pond piping.

Attached is our interim report describing the defi ciency and our approach to the resolution.

A final report will be submitted when our evaluation is completed.

Very truly yours, RGM: :cd R.,iG. MATLOCK Program Director, WNP-2 attachment: interim report CC: w/att ND Lewis - EFSEC, Olympia JR Lewis - BPA RE Snaith - BSR V.--Stello :NRC AD Toth - NRC Site

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JJ Verderber - B8R P~ = B Wood - NUS Corporation

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'ii R t POTitiTInLLY REPORTABLE CONDITION h'PPSS NUCLEAR PROJECT NO. 2 SPRAY POND SUPPORTS/CALCULATION 1,"ASHINGTON PUBLIC POWER SUPPLY SYSTEM DOCKET NO. 50-397 LICENSE NO. CPPR-93 Potenti al Pr obl em and Reference Noti ficati on During the piping review for IE Bulletin No. 79-07, new seismic loads were generated for the spray pond piping. In r'eviewing the effect on the system> loads in excess of the design allowables for expansion bolts were'identified in four of the pipe supports and axial restraint drugs were found missing at one support. These overloads were not a result of the revised seismic loads (IE Bulletin No. 79-07) but due to the original hardware design. P A proach to Res pl uti on The original design analysis is being -reviewed to determine how much the, design margin is reduced below the original requirements. An evaluation of the piping supports will then be made to determine if any components would be overloaded to the point of failure.

Status of Pro osed Resolution

'eview of one original design margins is underway and scheduled to be completed by December 12, 1980.

Del a of the Final Re ort

~ ne final report is being del'ayed until the effects of the design margin reduction on system components can be determined.

Proiected Com letion of Corrective Action and Submittal Date of Com leted Reoort Any corrective action that may be identified will be initiated and the final report submitted by March 1, 1981.

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