ML19343B636
| ML19343B636 | |
| Person / Time | |
|---|---|
| Site: | Surry, North Anna  |
| Issue date: | 12/04/1980 |
| From: | Sylvia B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 929, IEB-80-23, NUDOCS 8012240503 | |
| Download: ML19343B636 (3) | |
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c Mr. James P. O'Reilly, Director Serial No. 929 Office of Inspection and Enforcement N0/RMT:ms U. S. Nuclear Regulatory Commission Docket Nos. 50-280 Region II 50-281~-
101 Marietta Street, Suite 3100 50-338 Atlanta, Georgia 30303 50-339 License Nos. DPR-32 DPR-37 NPF-4 NPF-7
Dear Mr. O'Reilly:
SUBJECT:
I.E. BULLETIN 80-23 This is in response to I.E.
Bulletin 80-23, " Failures of Solenoid Valves Manufactured by Valcor Engineering Corporation."
Our reaponses for Surry Power Station Unit Nos. I and 2 and North Anna Power Station Unit Nos. I and 2 are attached.
Very truly yours, l
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.C B. R.' Sylvia i
Manager - Nuclear Operations and Maintenance Attachment ec:
Mr. Steven A. Varga, Chief Operating Reactors Branch No. 1 Division of Licensing Mr. Robert A. Clark, Chief Operating Reactors Branch No. 3 Division of Licensing Mr. B. Joe Youngblood, Chief Lic;using Branch No. 1 Division of Licensing 8 01224 o Foy
Attachment y.
Paga 1 NORTH ANNA POWER STATION I.E. BULLETIN NO. 80-23:
" FAILURES OF SOLENOID VALVES MANUFACTURED BY VALCOR ENGINEERING CORPORATION" The following documents were reviewed in order to determine if the subject Valcor valves as listed in the I.E.
Bulletin 80-23 were used in North Anna Units 1 and 2.
Units 1 and 2 NAPS Instrumentation Loop Diagrams Valve purchase requisitions Stone & Webster Engineering Corporation Report - 431 Unit 1 I.E. Bulletin 79-01B - 45 and 90 day review.
The conclusions obtained from this review indicated that only two (2) Valcor valves existed for each unit, the nitrogen supply valve for each pressurizer power operated relief valve (SOV-1456-3, 1455C-3, 2456-3, and 2455C-3). Those valves were inspected and found not to have the part number cited in the Balletin.
No other valves manufactured by Valcor were found at the station.
An estimated sixteen aanhours were expended to conduct this review.
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Attcchment
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Peg 2 2 SURRY POWER STATION FAILURE OF SOLENOID VALVES MANUFACTURED BY VALCOR ENGINEERING COMPANY INSPECTION ENFORCEMENT BULLETIN 80-23_
It has been determined, by a system review, that Surry Power Station does not have installed, or in stock, any solenoid valves of the type described by Inspection Enforcement Bulletin 80-23.
An estimated five manhours were expended to conduct this review.
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