ML20064H439
| ML20064H439 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 12/12/1978 |
| From: | Stallings C VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 7812200212 | |
| Download: ML20064H439 (2) | |
Text
.d~
u
.-M.
...?
a
~
VI:tCINIA Er,0CTCIC AND' Powan CoxPANY l
Rzcmasown,Vamorw rA naaet December 12, 1978-h Mr. James P. O'Reilly, Director Serial No.
708 R
Office of Inspection and Enforcement PO/ EMS:sej U. S. Nuclear Regulatory Commission Docket No.
50-338 Region II License No.
NPF-4 i
101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
7 Under the provisions of the operating license Technical Specifications, NRC Region II was notified on 12-08-78 that a potential significant deficiency
(
existed at North Anna Power Station, Unit No.1.
In accordance with the reporting requirements of the above regulations, the following information is submitted:
A.
Name and address of reporting individual:
C. M. Stallings Virginia Electric & Power Company P. O. Box 26666 Richmond, Virginia 23261 B.
Facility, activity, and/or component affected:
North Anna Power Station Emergency Diesel Generator Battery Rack Name of firm supplying the component, activity or service:
C.
Colt Industries Inc.
Fairbanks Morse Inc.
Power Systems Division 701 Lawton Avenue Beloit, Wisconsin 53511 D.
Description of defect, deficiency, or failure to comply:
At the request of Vepco operating personnel, the Architect / Engineer (S & W Engineering Co.) compared the emergency diesel generator battery rack seismic design drawings and the manufacturer's installation drawings.
It was discover-ed that the wall mounts, the side rail supports and the bottom support rails were not installed according to seismic design drawings.
It was also discover-ed that a request to modify these components during construction had not been implemented.
78122002I2_
3
dvisoin:A Ei.zcTctC ANs Powan Cownwy v Mr. Jame3 P. O'Reilly 2
Seismic calculations indicated that the bottom support rails will not yield, during a DBE;however, the wall mounts and the side rail supports will yield.
E.
Date of determination of reportability.
December 8, 1978 F.
Similar components, activities or Services:
I The racks are similar but not identical to racks used on Unit 2 of the North Anna Power Station.
G.
Corrective Action which has been, or is being or will be taken, the individual responsible and the length of time to complete the action.
i
' (-
The battery rack wall mounts have been replaced by seismically approved l
mountings. Approved side rail supports are presently being fabricated and are
' tenatively scheduled for installation on or before December 15, 1978. Repre-l sentatives of Vepco, Colt Industries and Stone & Webster Engineering Co.
tentatively will inspect the battery rack for completion of the modifications on December 12, 1978.
H.
Other information:
Any additional information on the above topic will be submitted in the Licensee I
Event Report.
Should you require futher information, please contact this office.
[
Very truly yours, j
bf C. M. Stallings Vice President-Power Supply
~
f i
and Production Operations cc:
Mr. John G. Davis, Acting Director Office of Inspection and Enforcement l
r I
i
_.