ML20214L943
| ML20214L943 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 05/26/1987 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| 87-277, NUDOCS 8706010128 | |
| Download: ML20214L943 (2) | |
Text
10 CFR 50.55a VIHOINIA ELEcTule ann POWEH COMI'ANY Hicnwoxn,Vinoixir uneen W.L.NTHWAB,7 Vaca Passi >mur wuc,... OPE NATIONW May 26, l987 United States Nuclear Regulatory Commission Serfal No.87-277 Attention: Document Control Desk N0/RCB:jmj Washington, D.C.
20555 Docket Nos.
50-338 50-339 License Nos.
NPT-4 NPF-7 Centlemen:
VIRGINIA El.ECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNITS 1 AND 2 CENTRIFUCAL CHARGING PUMP CASING WELDS On August 12, 1982 Virginia Electric and Power Company submitted letter serial No. 471 in response to certain questions that the Nuclear Regulatory Commission had asked about the North Anna Unit 1 inservice inspection program. One of their questions dealt with casing welds on the centrifugal charging pumps.
In our response, we committed to examining the pump and the casing welds, on an interval basis.
Subsequent investigation has revealed that these pumps may be of
- two, interchangeable, designs. Design A uses a welded pump casing while the casing of Design B has no weld. We have verified, through serial number checks with the manufacturer (Pacific Pumps), that all six of North Anna's pumps are of the B design. Therefore, no casing welds exist and no examinations are required.
If you require additional information, please contact me.
Very truly yours, LOL
(
W. L. Stewart 8706010128 870526 PDR ADDCK 05000338 PDR
9 cc:
U. S. Nuclear Regulatory Cornission 101 Marietta Street, N.W.
Suite 2900 Atlanta, CA 30323 Mr. J. L. Caldwell NRC Senior Resident Inspector North Anna Power Station