ML20039F261

Final Deficiency Rept Re Possible Stress in Containment Piping During Weld fit-up,initially Reported 811112.Caused by Accumulation of fit-up Tolerances During Spool Installation.Insps Will Be Made Before Final Welds Are Made

ML20039F261
Person / Time
Site:	Palo Verde
Issue date:	12/29/1981
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Faulkenberry B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8201120285
Download: ML20039F261 (3)

Text

__

,_ Docket Nos. 50-528/529/530 -

l y 50 55(e) Report KMZ@ith IMUmnMD ETRB2WIKMEi CaiHRAWT STA. P.O. BOX 21666 - PHOENIX, ARIZON A 85036 December 29, 1981 ANPP-19793-GHD/BSK h

9 U. S. Nuclear Regulatory Commission Ej Region V MCEp/ED [

Creekside Oaks Office Park k [j

_. se 1450 Maria Lane - Suite 210 2 JAN l'11982* Z 7 7 aS e

Walnut Creek, California 94596-5368

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• E', C Attention: Mr. B. H. Faulkenberry, Chief .c Reactor Construction and 13 Y th)

Engineering Support Branch - VS ,

Subject:

Final Report - DER 81-41 A 50.55(e) Report Relating to Possible Stress in Unit 2 Containment Piping During Weld Fit-up File: 81-019-026 D.4.33.2

Reference:

(A) Telephone Conversation between J. Eckhardt and G. Duckworth on November 12, 1981.

Dear Sir:

Attached is our final written report of the deficiency referenced above which has been determined to be Not Reportable under the requirements of 10CFR50.55(e).

Very truly yours, .

. W E. E. Van Brunt, Jr.

APS Vice President Nuclear Projects ANPP Project Director EEVBJr/GHD:bj Attachment ec: See Page 2 8201120285 011229 PDR ADOCK 05000 S

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U. S. Nucissr Regulttery Cosmiczien-Mr. B. H, Fruiktnberry, Chief ANPP-19793-GHD/BSK-December 29,.1981 Page 2' cc: Richard DeYoung Director U. S. Nuclear. Regulatory Commission Office of Inspection and Enforcement Washington, D. C. 20555  ;

J. A. Roedel D. B. Fasnacht G. C. Andognini F. W. Hartley J. M. Allen A. C. Rogers-B. S. Kaplan W. E. Ide J. Vorees J. A. Brand A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher R. M. Grant D. R. Hawkinson L. E.'Vorderbrueggen Ms. Patricia Lee Hourihan-6413 South 26th Street Phoenix, Arizona 85040 l

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FINAL REPORT - DER 81-41 DEFICIENCY EVAI/ATION 50.55(e)

ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNIT 2 i-I. Description of Deficiency

, During pipe spool alignment and installation 'to design location,_ Welds WOO 1 and WOO 2 of the Main Steau System Spools ISG033-S01 and S02 were temporarily supported at an incorrect location. To obtain alignment at Weld-WOO 4, the' temporary cribbing for' Weld WOO 3 was lowered

, to its design elevation in a cold condition. The re-sultant movement of the pipe could possibly cause ex-cessive stress between steam generator nozzle and Weld 003. The cause is attributed to'an accumulation of fit-up tolerances during installation of the various spools.

II. Analysis of Safety Implications The Engineering analysis of this condition has determined

, that this condition did not induce excessive stress in the piping system or steam generator-nozzle. Should this condition remain undetected, it would not have represented a safety significant condition.

t III. Corrective Action I

The NCR will be dispositioned as "Use-As-Is". The

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responsible individuals have been consulted to perform complete fit-up inspections of piping assemblies prior to making the final welds.

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