ML19259C228
| ML19259C228 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 05/23/1979 |
| From: | Brown S VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-79-128-000 396, NUDOCS 7906140432 | |
| Download: ML19259C228 (2) | |
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. 3 I]M 29 a9:Magl23, 1973 Mr. James P. O'Reilly, Director Serial No. 396 Office of Inspection & Enforcement PSE&C/MBS:mac: wang U. S. Nuclear Regulatory Commission Region II Docket No. 50-399 101 Mari 2tta Street, Suite 3100 Atlanti, Georgia 30303
Dear W. O'Reilly:
On May 21, 1979, a report was made under the provisions of 10CFR50.55(e) concerning 2ngle iron braces located on the exhaust ducting of the diesel g w rator cooling fans.
The angle iron braces were tack welded diagonally across each corner of the ducts, in acccedance with the reporting requirements of 10CFR21, the following info m tion is submitted:
A.
'ume and address of reporting individual:
Mr. E. A. Baum, Executive Manager Licensing ind Quality Assurance Virginia Electric and Power Company P. O. Box 25666 Richmend, Virginia 23261 B.
Facility, activity, and/or component affected:
North Anna Power Station, Unit 2 Diesel Generator Cooling Fans C.
Name of firm constructing the f acility or supplying the component, activity or service:
Stone & Wenster Engineering Corporation 284 168 P. O. Box 2325 Boston, Massachusetts 02107 D.
Description of detect, deficiency, or f ailure to comply:
Angle iron braces installed to aid in the f3brication of the diesel generator cooling f an exhaust ducts were inadvertently left in the installed exhaust ducts.
These braces were tack welded and were not g
designed to remain in place once the ducts were installed.
The rs0 traces were loc ated cbove the diesel generator cooling f ans.
Failure g h O of the angle iron brace tack welds could have possibly allowed the
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braces to f all into the ccoling f ans, causing damage to the f ans and possibly rendering the diesel generator incoerable.
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VIRGINIA (LECTPIC AND POWER COMPANY TO Mr. James P. O'Reilln Director
- 2 E.
Date of determination of reportability:
May 21, 1979 F.
Similar components, activities, or services:
North Anna Power Station, Unit 1 G.
Correction acticn which has been, is being or will be taken, the individual responsible and the length of time to complete the action:
Correction action has been taken.
The angle iron braces have been removed.
H.
Other information:
Since no other actions will be required to correct the problem described in section D of this report, we consider this to be the final report under the provisions of 10CFR50.55(e)(3).
Should you require further information, please contact this office.
Very tr ly yours, Sam C n, Jr.
Senior Vice President - Power Station Engineering and Construction cc: Director, Office of Inspection and Enforcement (3) 2284 169