ML19320D293
| ML19320D293 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| 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) | |
Text
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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/[
i.
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 to approved engineering specifications, drawings, and
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procedures...".
Bechtel Power Corporation welding standard "GWS-Structural" 4
Revision 2, states in Section 5.1 that the minimum preheat
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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.
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