ML19320D293

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Responds to NRC 800526 Ltr Re Violations Noted in IE Insp Repts 50-352/80-03 & 50-353/80-03.Corrective Actions:Qa Issued Stop Work Orders on Pipe Restraint PR-239
ML19320D293
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 06/23/1980
From: Kemper J
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19320D291 List:
References
NUDOCS 8007210214
Download: ML19320D293 (2)


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O PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. BOX 8699 PHILADELPHIA, PA.19101 (215)841-4502 VIC E+R ESID ENT EM5sMES NaMG AMO NESE ANCM Mr. Boyce Grier, Director United States Nuclear Regri~ tory Commission Office of Inspection and .orcement, Region I 631 Park Avenue King of Prussia, PA 19406

Subject:

USNRC IE Region I Letter dated May 26, 1980 RE: Site and Office Inspection of February 25 - March 25, 1980 Inspection Report No. 50-352/80-03 4 50-353/80-03 Limerick Generating Station - Units 1 and 2 File: QUAL 1-2-2 (352/80-03 and 353/80-03)

Dear Mr. Grier:

In response to the subject letter regarding items identified during the subject inspection of construction activities authorized by NRC License Nos. CPPR-106 and -107, we transmit herewith the following:

Attachment I - Response to Appendix A

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Should you have any questions concerning these items, we would be . .

pleased to discuss them with you.

Sincerely, J..S. Kemper JMC/mmk Attachment 800721Od/[

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ATTACHMENT I ,

Item af Nor, compliance Deficiency.

Appendix B, of 10CFR50, Criterion V, states in part:

" Activities affecting quality... shall be accomplished sin accordance with these instructions, procedures or drawings...".

The Limerick PSAR, Appendix D, Quality Assurance Program, Paragraph D.6.4 states, in part, that: Bechtel Construction Department... is responsible for construction of the plant

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to approved engineering specifications, drawings, and procedures...".

Bechtel Power Corporation welding standard "GWS-Structural" 4 Revision 2, states in Section 5.1 that the minimum preheat )

temperature of 70 F for a wcid j oint thickness range of 3/4" - 1 " shall be maintained during all welding.

Contrary to the above, on March 3, 1980 a welder was about  ;

to weld on pipe restraint (PR-239) without preheating the '

weld joint. The temperature in the working area was in the i low sixties. This item is a deficiency. l 1

Response to Deficiency On March 4, 1980, PECO - QA issued a stop work order on pipe _

restraint PR-239 and all other welding under the direction of ,' ,

the foreman responsible for the v ek on restraint PR-239. The

, welder was re-instructed on whert .ne preheat requirements can be found on the weld authorization papers. Additionally, on March 6, 1980 foremen were given a refresher class on general welding requirements, including preheat requirements. Several contact pyrometers are available to both welders and foremen. A release of the stop work was issued on March 6, 1980 upon completion of the above corrective steps to avoid further items of noncompliance.

A review of the welding on PR-239 concluded that the weld is acceptable as welded, because the base metal temperature was above tne 50 F minimum preheat requirement imposed by more recent editions of the AWS code. Final weld NDE confirmed weld acceptability.

I 1/1 50-352/80-03 50-353/80-03