ML20009D921
| ML20009D921 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 07/14/1981 |
| From: | Martin T Public Service Enterprise Group |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8107240502 | |
| Download: ML20009D921 (2) | |
Text
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i Thomas J. Martin Public Service Electric and Gas Company 80 Park Plaza Newark, N.J. 07101 201/4306316 Vice President Engirtaering and Construction July 14, 1981 mWLizSb Mr. Boyce H.
Grier, Director g
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U. S.
Nuclear Regulatory Commission e
"q Office of Inspection and Enforcement
,f' Region I J
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631: Park Avenue
.t King of Prussia, Pennsylvania 19406
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Dear Mr. Grier:
7 SPOOL WELD BUILDUP INSUFFICIENT EXAMINATION 10CFR50.55(e), POTENTIAL SIGNIFICANT DEFICIENCY NO. 1 AND.2 UNITS.
HOPE CREEK GENERATING STATION On October 30, 1980, a verbal report was made to Region I, Office of Inspection and Enforcement representative, Mr. J.
Mattia, advising of a potential significant item involving inadequate nondestructive examination of weld buildups by a 4
supplier of safety _ related pipe.
Supplemental information was suh ';ed to the NRC in writing on November 12, 1980, December 19, 1980, and March 4, 1981.
In addition, a detailed report of our investigation into this. matter was submitted on April 1, 1981, in final re-sponse to your Inspection Report 50-354/79-04.
That infor-mation is incorporated in this report by reference.
The l
content of the April 1, 1981, letter was also reviewed with i'
a representative of Region I on April 23, 1981; reference Inspection Report 50-354/81-05.
Bechtel Power Corporation has completed and evaluated the
.repa rs to the pipe spools identified in our April 1,
- 1981, i
' letter.
I The indications found by surface examination of the weld I
buildups ' on the two nuclear. Class 2 spools were eliminated bgy),77 E
by cosmetic grinding, without any encroachment on the minimum specified wall thickness.
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The indications found by radiography of the weld buildups on the ten nuclear Class 3 spools were eliminated by grinding, 3
.with subsequent weld repair to restore specified wall thick-ness.
All'of theselweld buildups were located on field ends and were ' surface examined by Dravo in accordance with their shop procedure.- -The surface examination performed by Dravo assured a weld quality consistent with that required by ASME "8107240502 810714 PDR ADOCK 05000354 -
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..Section III and Bechtel Specification P-201(Q) for the even-tual buttwald of the joint (buttwelds in 150-lb, nuclear Class 3 piping requires only a surface examination).
The indications found by the additional radiography con-sisted of porosity, slag, and lack of 0:sion.
The amount and severity of the indications have been evaluated to be such that had they remained undetected, would not have af-fected serviceability of the piping and, therefore, safe operation of the plant.
Therefore, we do not consider this problem to be a signif-icant deficiency, and we do not consider it reportable under 10CFR50.55(e).
Very truly yours,
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Office of Inspection & Enforcement Division of Reactor Construction Inspection Washington, D.C.
II.
E.
Morris Bechtel Power Corporation San Francisco, California NRC Resident Inspector llope Creek Generating Station 4
AP2 1/2