ML20087F877

Final Significant Const Deficiency Rept,Item 32 Re Stress Analysis for Welded Pipe Support Attachments Not Performed Prior to fabrication.Bergen-Paterson Analysis Identified 85 Supports Requiring Rev & Rework

ML20087F877
Person / Time
Site:	Waterford
Issue date:	03/01/1984
From:	Gerrets T LOUISIANA POWER & LIGHT CO.
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
32, W3K84-0454, W3K84-454, NUDOCS 8403190253
Download: ML20087F877 (3)

Text

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142 DELAHONDE STREET P O W E R & LI G H T! R O BOX 6000

• NEW ORLEANS. LOUISIANA March 1, 1984 e (504) 366-2345 70174 W3K84-0454 Q-3-A35.07.32 Mr. John T. Collins 33@20WM3 Regional Administrator, Region IV U. S. Nuclear Regulatory Commission MAR 81%4 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76012 <

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REFERENCE:

LP&L Letter W3K84-0246 dated February 3, 1984

SUBJECT:

Waterford SES Unit No. 3 Docket No. 50-382 Significant Construction Deficiency No. 32

" Stress Analysis For Welded Pipe Support Attachments Was Not Performed Prior lo Fabrication" Final Report In accordance with the requirements of 10CFR50.55(e), we are hereby providing two copies of the Final Report of Significant Construction Deficiency No. 32,

" Stress Analysis For Welded Pipe Support Attachments Was Not Performed Prior To Fabrication".

If you have any questions, please advise.

Very truly yours, h?AZd T. F. Gerrets Corporate Quality Assurance Manager TFG:CNH.SSTG Attachments cc: Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555 (15 copies) hDRADOCK403190253 g 05000382 840301 IU PDR ' l

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iMr.; John T. Collins L

-March 1 1984

_. W3K84 0454 Page 2 cc: Director

' Office of Management Information and Program Control U.'S. Nuclear Regulatory Commission Washington, D.C. 20555 3 Mr.' E.-L. Blake

-Shaw, Pittman, Potts, & Trowbridge 1800 M Street, N.W.

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Washington, D.C.

20036 Mr. W. M. Stevenson Monroe & Lemann 1424 Whitney Building

~New Orleans, Louisiana 70130 e

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y FINAL REPORT OF SIGNIFICANT CONSTRUCTION DEFICIENCY NO. 32 i " STRESS ANALYSIS FOR WELDED PIPE SUPPORT ATTACHMENTS WAS NOT PERFORMED PRIOR TO FABRICATION"

' INTRODUCTION.

p This-report is submitted pursuant to 10CFR50.55(e). It describes a deficiency in the design of welded pipe attachments by Bergen-Patterson, (Designers).

The local stress analysis'at the point along the pipe where's welded attachment is required for pipe supports was not performed prior to fabrication. This problem is considered reportable pursuant to the requirements of 10CFR50.55(e). To the best of our knowledge, this problem has not been identified to the Nuclear Regulatory Commission pursuant to 10CFR21.

DESCRIPTION OF PROBLEM In reviewing Bergen-Patterson feedback on local' stress analysis, it was-found that Bergen-Patterson had been active in this area but reduced their efforts to a minimum. .Thus in many cases, the local strese ar.alysis was not performed prior to fabrication.

- The following systems were ultimately identified as being affected:

SAFETY RELATED NON-SAFETY RELATED Blowdown Air Evacuation

-Boron Management Condensate Component Cooling Extraction Steam Chemical Volume Control Fire Protection Containment Spray Feedwater Fuel Pool Heater Drain Safety Injection Instrument Air Main Steam Station Air Turbine Cooling SAFETY IMPLICATIONS If this deficiency were left uncorrected, possible degradation of

-safety-related systems could occur due to the failure of welded pipe support attachments.

' CORRECTIVE ACTION TAKEN Bergen-Patterson performed the stress analysis, this analysis identified eighty-five (85) supports that required revision and/or rework.

Nonconformance Report W3-2733 was issued to track this rework.

All corrective action has been completed, the supporting documentation has

'been reviewed and NCR W3-2733 has been closed.

This Report is being submitted as the Final Report.

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