ML17053B722
| ML17053B722 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 06/03/1980 |
| From: | Robert Carlson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Rhode G NIAGARA MOHAWK POWER CORP. |
| References | |
| NUDOCS 8007020004 | |
| Download: ML17053B722 (6) | |
Text
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Docket.
No.. 50-410 UNITEO STATES UCLEAR REGULATORY COMMISSION~
REGION I 631 PARK AVENUE KING OF PRUSSIA, PENNSYLVANIA 19406
.438 Op )gy Niagara Mohawk Power Corporation ATTN:
Mr.
G.
K.
Rhode Yice President System Project Management 300 Erie Boulevard, West
- Syracuse, Ne'w York 13202 Gentlemen:
This refers to the meeting held at the NRC Region I office on May 7, 1980 at your request.
The meeting was related to activities authorized by NRC License CPPR-112 and was attended by members of my staff and Messrs.
S.
Manno, et al.,
of your staff and representatives of Stone and Webster Engineering Company.
The subjects discussed at this meeting are included in the Office of Inspection and Enforcement Meeting Summary which is enclosed w'ith this letter.
It is our opinion that this meeting was beneficial and provided a better under-standing concerning the biological shield wall problem.
In accordance with Section 2'90 of NRC's "Rules of Practice",
Part 2, Title 10, Code of Federal Regulations, a copy of this, letter and the enclosed report will be placed in the NRC's Public Document Room.
No reply to this letter is required;
- however, should you have any questions. con-cerning this matter, we will be pleased to discuss them with you.
Sincerely,
Enclosure:
Meeting Summary cc w/encl:
Eugene B. Thomas, Jr.,
Esquire Robert T.
Car lson, Chief Reactor Construction and Engineering Support Branch 6 oovo~ooO J~
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NUCLEAR REGULATORY COMMISSION REGION I 631 PARK AVENUE KING OF PRUSSIA, PENNSYLVANIA19406 License No.
CPPR-112 Docket No. 50-410 Applicant:
Facility:
Subject:
Niagara Mohawk Power Corporation Nine Mile Point Unit 2 BIOLOGICAL SHIELD WALL WELD PROBLEMS
SUMMARY
OF MEETING WITH NIAGARA MOHAWK POWER CORPORATION ON MAY 7, 1980 On May 7, 1980, representatives from Niagara Mohawk Power Corporation (NMPC) and Stone and Webster Engineering Company (S8W) met with Region 1 Construction Branch representatives at King of Prussia, Pennsylvania.
The meeting was held at the licensee's request to make a presentation of the biological shield wall weld defect problem.
The attendance list is attached as Appendix A to this summary.
The NMPC representatives presented the problem, i.e.,
a number of shop welds did not meet AWS Dl. 1 requirements.
A description of the biological shield wall was presented.
This included the functional requirements and physical descrip-tion, design criteria, method of fabrication, specification requirements and the gA program of S8W as applied to the biological shield wall, A chronology of events including the discovery of the problem, the engineering investigation and proposed sampling plan for verifying the quality of welds containing a back-ing bar was made.
Metalurgical destructive.
and nondestructive test examination results were presented.
A closure plan to resolve the biological shield wall weld problems was presented.
This consisted of the methodology for examining and evaluating the weld defects, determination of the cause of the weld defects and the erection strategy.
The Region I personnel acknowledged the comments of NMPC and their representa-tives.
NMPC was conformed that due to the weld problems at Nine Mile Point 2, an inspection would be conducted during the week of May 12, 1980 to review the work in progress.
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APPENDIX A Attendance at the NMPC-NRC meeting on May 7, 1980 at the NRC Region I office Nia ara Mohawk Power Cor oration Mr.
P.
E.
Mr.
E.
R.
Mr. S.
F.
Mr.
R.
L.
Mr.
C.
D.
Mr.
K.
D.
Francisco Klein Manno Patch Terry Ward Stone and Webster En ineerin Com an Mr. S.
A. Ali Ms.
D. A. Boe Mr.
R.
G.
Burns Mr.
B. Charlson Mr.
C.
E. Crocker Mr.
W.
S. Oiehl Mr. L.
B. Hirst Mr.
R.
H. Pinney Mr.
C.
F.
Reeves Mr. I. Sprung Office of Ins ection and Enforcement Re ion I I
R.
T. Carlson,
- Chief, RCEES Branch R.
A. Feil, Reactor Inspector R.
A. McBrearty, Reactor Inspector R.
W.
McGaughy, Chief, Projects Section L.
E. Tripp, Chief, Engineering Support Section No.
1 G.
A. Walton, Reactor Inspector
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