ML19339C211
| ML19339C211 | |
| Person / Time | |
|---|---|
| Site: | Sterling |
| Issue date: | 10/31/1980 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Authur J ROCHESTER GAS & ELECTRIC CORP. |
| References | |
| NUDOCS 8011170843 | |
| Download: ML19339C211 (1) | |
Text
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UNITED STATES
~,j NUCLEAR REGULATORY COMMISSION
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s31 PARK AVENUE
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l Docket No. 50-485
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O, Rochester Gas and Electric Corporation
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ATTN: Mr. J. E. Arthur 70 ~
Chief Engineer 93C T0 89 East Avenue
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-j Rochester, New York 14649 y
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10 Gentlenem The enclosed IE Information Notica No. 80-39, " Malfunctions of Solenoid Valves Manufactured by Valece Engineering Cogoration," is forwarded to you for information.
No written response is required.
If you desire additional information regarding this mattar, please contact,this offica.
Sincerely, B
a H. Grier Director
Enclosures:
1.
IE Information Notica No. 80-39 2.
List of Recantly Issued IE Information Noticas CONTACT:
- 0. L Cac.mn (215-337-5256) cc w/encls:
C. R. Ande.rson, Manager, QA Lex X. Larson, Esquire N. A. Petrick, Executive Director, SNUPPS Gerald Charnoff, Esquire 8011 y ryo g.] 3
SSINS No.:
6835 Accessien No.:
8008220245 IN 80-39 UNITED STATES NUCLEAR REGULATORY CCMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D. C. 20555 October 31, 1980 IE INFORMATION NOTICE NO. 80-39: MALFUNCTION OF SOLEN 0ID VALVES MANUFACTURED BY VALCOR ENGINEERING CORPORATION PURPOSE:
The intent of this Information Notice is to alert holders of constructiac permits and operating licenses for nuclear power plants of a potentially generic prcblem involving the malfunctioning of certain solenoid valves manu-factured by the Valcor Engineering Corporation (Valcor).
The solenoid valves so involved are designated as Valcor Valve Model No. VS2600-554-1.
Valcor has informed us that these valves have only beel supplied to the McGuire facility; however, since these valves were substitutea for solenoid valves of another manufacturer that did not meet the requirement 0 of IE Bulletin.No. 79-01 and its amendments, ifcensees and holders of constrw tion permits should take into account the problem identifiec in this Information Notice prior to making any similar substitution.
BACXCROUND:
By TWX data') June 27, 1980, Valcor submitted a prelimi6&ry 10 CFR Part 21 Report addressing the malfunctioning of Valcor solenoid valvas at the McGuire facility.
The malfunctioning valves have been identified as '/alcor Valve Model No. 52500-554-1.
This TWX was subsequently followed by a lettar datad July 3,1980, transmitting a more detailed Part 21 Report er. titled," Quality Assuranca Report", a copy of which is attached hereto as En:losure No.1.
In brief, the malfunction appears to be an intarmittant type wherein the valve fails to cycle frce CPEN to CLOSE to OPEN immediataly after a sustained period i
of operation in the energi::ed (OPEN) mode.
Although the valves are rated for
" continuous operation", Valcor contands that the valves were not designed to 1
cent the operating conditions requiring the immediate cycling frce OPEN to CLOSE to OPEN after a sustained period of continuous energi::ation.
A major sourca of the problem, therefore, may be a misunders'tanding of the term
' continuous operation".
By letter dated July 14, 1980 to Duke Power Company, Valcor transmitted its reccamendations in this matter entitled, " Outline -
Suggested Modification Procedures", a copy of which is attached hsreto as Enclosure No. 2.
1 DUPLICATE DOCUMENT Entire document previously entered into system under:
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