ML19323H146
| ML19323H146 | |
| Person / Time | |
|---|---|
| Site: | Mcguire |
| Issue date: | 03/27/1980 |
| From: | Parker W DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19323H138 | List: |
| References | |
| NUDOCS 8006120139 | |
| Download: ML19323H146 (2) | |
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DUKE POWER 7 COMPANY Powra Buttorno 422 SocTn Cnuncu SrazzT, CruntoTTE, N. C. as24a 1 i;.hi' I March"27, 1980 P l' 9y w o ul A64 O. PA R R E R. J R.
Vice Patsiorav TcLtemoe.c: Anta 704 Svtans Paoouction 373-4083 Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Subject:
McGuire Nuclear Station Docket No. 50-370 Re: R;I:EHG 50-370/80-01
Dear Mr. O'Reilly:
As requested by Mr. Milt Hunt and Mr. Ed Girard of your staff in a conference call held on March 18, 1980, please find attached a supplemental response to Item A of the subject Inspection Report.
Duke Power Company does not consider any information containel in IE Inspection Report No. 50-370/80-01 to be proprietary.
V
'y truly yours, u_
L9. x William O. Parker, Jr LJB:ses Attachment 8006120lgg
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MCGUIRE NUCLEAR STATION Supplemental Response to IE Inspection Report No. 50-370/80-01
RESPONSE
An audit has been conducted which included inspection of a sample of flanges-and fittings in the following areas on McGuire Unit 2.
(a) Socket weld flanges using greater than schedule 40 pipe for weld size.
(b) Socket weld flanges using less than schedule 40 pipe for weld size.
(c) Socket weld fittings using greater than schedule 40 pipe for weld size.
In regard to Item (a), a complete reinspection was made of socket weld flanges using greater than schedule 40 pipe.
One hundred and eleven welds were inspected with forty-three rejects. Under Item (b) one hundred welds selected at random were examined. Four of these welds were rejected.
One weld was.187 inches below the minimum requirements.
The other three welds had spots ranging from
.013 inches to.016 inches below the minimum requirements. The audit of Item (c) included one hundred welds selected at random. Three of these welds were reported as below the minimum requirements. Upon reinspection, one of the welds was found to be acceptable, the other two had spots which were.031 inches and.125 inches below the minimum requirements.
Based on these results, we have concluded that additional sampling and inspection of welds is not warranted on McGuire Unit 2.
All of the rejected welds have been documented on nonconforming item reports and will be repaired. These repairs will be scheduled based on individual system availability.
Socket welds are aise being reviewed for similar concerns on McGuire Unit 1.
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Powra Ut:st.nixo 422 Sot:rn Cut:ncu Stazzi, CnAnwriz, N. C. asa42 03 wi we. o. en n a e n. s n.
March 5, 1980 ect Persierut itLtp owt:Anta704 Setas Paoovction 373-4083 Mr. James P. O'Reilly, Director
- 11. S. Nuclear Regulatory Commission legion II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Gubject: McGuire Nuclear Station Docket No. 50-370
Reference:
RII:EHG 50-370/80-01
Dear Mr. O'Reilly:
i As requested by your letter of February 11, 1980 pleas.: find attached a response to the items of noncompliance identified in the subjec.. inspection report.
Duke Power Company does not consider any information contained in IE Inspection Report No. 50-370/80-01 to be proprietary.
Very truly yours, N
V/ #
William O. Parker, Jr.
LJB:ses j
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