ML17296B187

Final Deficiency Rept,Originally Reported 801211,re Pipe Stools Pulled to Facilitate Installation of Pipe Supports Possibly Overstressing Welds.Bechtel Corp Will Repair Piping Sys.Personnel Instructed to Follow Installation Spec

ML17296B187
Person / Time
Site:	Palo Verde
Issue date:	01/12/1981
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Spencer G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, ANPP-17062-BSK, NUDOCS 8101210338
Download: ML17296B187 (10)

Text

REGULATORY NFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR: 8101210338 DOC ~ DATE: 81/01/12 NOTAR ED: NO DOCKET FACIL:STN-50 529 Palo Verde Nuclear Station~ Unit 2~ Arizona Publi 0500052 AUTH, NAME AUTHOR AFFILIATION VAN BRUNTiE-,ED Arizona Public Service Co ~

RECIP ~ NAME RECIPIENT AFFILIATION SPENCER~GAL Region 5~ San Franciscoi Reactor Construction 8 Ehgineer

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SUBJECT:

Final deficiency rept~originally reported 801211~re pipe

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stools- pul led to faci1 i tate,instal ation of pipe suppor ts 1

possibl y overstressing wel ds;Sechtel Corp wi l l r epair piping sys,Per sonnel instructed to fol low installation spec ~

DISTRIBUTION CODE BO 19S COPIES RECEIVED LTR

~ e z 'NCL J~ SIZE e TITLE,': Construction Deficiency Repor t (10CFR505SE)

NOTES:Standardized Plant. 05000529 RECIPIENT COPIES RECIPIENT COPIES ID LTTR ENCL ID CODE/NAME LTTR ENCL A/D LI CENSNG 04 MIRAGLIA g F ~ 05 CODE/NAME'CTION:

1 1 1 LEErJe 06 1 1 KERRIGANg J, 07 1 1 INTERNAL! AD/RC I/IE 17 1 1 AEOD 18 1 1 ASI BP/J,HARD 1 D/DIR HUM FAC15 1 1 DIRzDIV OF LIC 1 1 EDO L STAFF 19 1 1 EQUIP QUAL BR11 1 1 HYD/GEO BR 22 1 1 IHE 09 1 LIC QUAL BR 12 1 1 NPA 20 1 1 1 OELD 21 1 1 1 1 QA BR 14 1 1 1 RUTHERFORDgN ~ IE, 1 1 STAfRRDS DEV 21 1 1 EXTERNAL: ACRS 16 16 16' LPDR 03 1 1 NSIC 08 1 TOTAL NUMBER OF COPIES REQUIRED:- LTTR 40 ENCL 40

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ERICuaa QKNE'PEQRI &)KISRt'P P. O. BOX 2I666 PHOENIX, ARIZONA 65036 January 12, 1981 ANPP-17062-BSK/JAR U. S. Nuclear Regulatory Commission Region V Walnut Creek Plaza Suite 202 1990 North California Boulevard Walnut Creek, California 94596 Attention: Mr. G. S. Spencer, Chief Reactor Construction and Engineering Support Branch

Subject:

A 50';55(e) Reportable Condition Relating to Pipe Spools Pulled to Facilitate Installation of Pipe Supports May Overstress Welds Final Report Pile: 81-019-026; D.4.33.2

Reference:

Telephone Conversation between J. Eckhardt and B. S.

Kaplan on December 11, 1980 (DER 80-38)

Dear Sir:

Attached, is our final written report of the reportable deficiency under 10CFR50.55(e) referen'ced above.

Very truly yours,

- 6'. Met ~Jr, E. E. Van Brunt, APS Vice President Nuclear Projects ANPP Project Director EEVBJr/BSK:skc Attachment

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U. S, Nuclear Regulatory Commission Region V Attention: Mr. G. S. Spencer, Chief ANPP-17062-. BSK/JAR January 12, 1981 Page, 2 CC: Victor Stello, Jr., Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 A. C. Gehr Snell & Wilmer R. L. Robb D. B. Pasnacht W. "E. Ide A. C. Rogers J. M. Allen J. A. Brand W. H. Wilson W..G. Bingham W. J. Stubblefield R. L. Patterson R. W. Welcher D. R. Hawkinson

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FINAL REPORT REPORTABLE DEFICIENCY 50.55(e)

ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNIT //2 I. Descri tion of Deficienc Installation Specification 13-PM-204 requires that when positioning and fitting-up a spool to a previously erected portion of a system in an established position, the estab-lished piping shall not be pulled or be permitted to deflect from position except where approved for closure. Contrary to this requirement, Lines 2-CH-424-GCBC-20" and 2-CH-142-

" HCBA-20" were pulled excessively to facilitate -the installa-tion of Pipe Support 13-CH-424-H006. The integrity of the completed welds of the piping system was indeterminate and it was impractical to perform an analysis.

II. Anal sis of Safet Im lications Bechtel cannot determine without extensive analysis whether the above condition if'ot detected could have resulted in a safety significant event; however, this condition is con-sidered reportable based on the fact that conservative judgement indicates the condition must be repaired to elimi-nate any possibility of excessive stress.

III. Corrective Action

1. Bechtel Construction is taking the necessary action to repair (remove and reinstall) the piping system to the original'esign per NCR P-.A-1814.

2. All personnel associated with the erection of pipe spools and hangers have been instructed to follow the requirements of the Installation Specification, See attached Training Session Report.

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