ML19276E870

Submits Info Required by 10CFR21 Re Lack of Seismic Supports & Missile Protection for Emergency Diesel Generator Mufflers.Investigation Is Proceeding to Determine Corrective Action

ML19276E870
Person / Time
Site:	North Anna
Issue date:	02/05/1979
From:	Brown S VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
061, 61, NUDOCS 7903210539
Download: ML19276E870 (2)

Text

,4 .

Whtn. usa Vepco _ _ _ _ _ _

February 5,1979 Mr. James P. O'Reilly, Director Serial No. 061 Office af Inspection & Enforcement PSE&C/MBS/vml/ wang U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Docket No. 50-339 Atlanta, Georgia 30303

Dear Sir:

On January 31, 1979, a report was made under the provisions of 10CFR50.55(e) concerning the lack of seismic supports and missile protection for the emergency diesel generator mufflers.

In accordance with the reporting requirements of 10CFR21, the following information is submitted:

A. Name and address of reporting individual:

Mr. E. A. Baum, Executive Manager Licensing and Quality Assurance Virginia Electric and Power Company P. O. Box 26666 Richmond, Virginia 23261 B. Facility, activity, and/or component affected:

North Anna Power Station, Unit 2 Emergency Diesel Generator Mufflers C. Name of firm constructing the facility or supplying the component, activity or service.

Stone and Webster Engineering Corporation P. O. Box 2325 Boston, Massachusetts 02107 D. Description of defect, deficiency, or failure to comply:

The present supports for the emergency diesel generator mufflers were not designed to withstand seismic effects. The mufflers are also not missile protected. The mufflers form part of the exhaust system of the emergency diesel generatcr and, if damaged, could increase back-pressure to the extent of rendering the emergency diesel generators inoperable.

. g 1 \'. . Chl'T 7903210 539 7

VJRGINIA ELECTPIC AND POWER CCYPANY TO Mr. James P. O'Reilly, Director swecr no. 2 E. Date of determination of repcetability:

January 31, 1979 F. Similar components, activities, or services:

North Anna Unit 1 G. Corrective action which has been, is being or will be taken, the individual responsible and the length of time to complete the action:

Investigation is proceeding to determine corrective action.

H. Other information:

None Any information not available at this time will be submitted in a follow-up letter as a 30-day report.

Should you require further information, please contact this office.

Very tru j vours, fg .

Sam C. Br n, Jr.

Senior Vice President Power Station Engineering and Construction cc: Director, Office of Inspection and Enforcement (3)

.