ML19339C249
| ML19339C249 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 10/31/1980 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Lundvall A BALTIMORE GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8011170901 | |
| Download: ML19339C249 (1) | |
Text
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- l UNITED STATES NUCLEAR REGULATORY COMMISSION e
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REGION l 8,
,e 631 PARK AVENUE KINO oF PRUSSIA, PENNSYLVANIA 19406 October 31, 1980 m}
- p Docket Nos. 50-317 Ni 50-318
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Bsitimore Gas and Electric Company ATTN:
Mr. A. E. Lundvall, Jr.
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- gj j Vice President, Supply
. -s p3 P. O. Box 1475
- R EE Baltimore, Maryland 21203 3
Gentlemen:
The enclosed IE Information Notice No. 80-39, " Malfunctions of Solenoid Valves Manufactured by Valcor Engineering Corporation," is forwarded to you for information.
No written response is required.
If you desire additional information regarding this matter, please contact this office.
Sincerely.
A Bo a H. Grier Directcr
Enclosures:
1.
IE Infomation Notice No. 80-39 2.
List of Recently Issued IE Information Notices CONTACT:
D. L. Caphton (215-337-5256) cc w/encis:
R. M. Douglas, Manager, Qud ity Assurance L. B. Russell, Plant Superintendent T. Sydnor, General Supervisor, Operations QA R. C. L. Olson, Principal Engineer J. A. Tiernan, Manager, Nuclear Power R. E. Denton, General Supervisor, Training and Technical Services 80 17770 Po'
i SSINS N3.:
6835 Acesssion No.:
8008220245 IN 80-39 UNITED STATES NUCLEAR REGULATORY CCMMISSION OFFICE OF INSPECTION AND ENFORCEMENT l
WASHINGTON, D. C. 20555 October 31, 1980 IE INFORMATION NOTICE NO. 80-39: MALFUNCTION OF SOLENOID VALVES MANUFACTURED BY VALCOR ENGINEERING CORPORATION PURPOSE:
The intent of this Information Notice is to alert holders of construction permits and operating licenses for nuclear power plants of a potentially generic problem involving the malfunctioning of certain solenoid valves manu-factured by the Valcor Engineering Corporation (Valcor).
The solenoid valves so involved are designated as Valcar Valve Model No. V52600-554-1.
Valcor has infomed us that these valves have only been supplied to the McGuire facility; however, since these valves were substituted for solenoid valves of another manufacturer that did not meet the requirements of IE Bulletin No. 79-01 and its amendments, licensees and holders of construction permits should take into account the problem identified in this Information Notice prior to making any similar substitution.
BACKGROUND:
By TWX dated June 27, 1980, Valcor submittad a preliminary 10 CFR Part 21 Report addressing the malfunctioning of Valcor solenoid valves at the McGuire facility.
The malfunctioning valves have been identified as Valcor Valve Model No. 52500-554-1.
This TWX was subsecuently followed by a lettar dated July 3,1980, transmitting a more detailed Part 21 Report entitled," quality Assuranca Report", a copy of which is attached hereto as Enclosure No. 1.
In brief, the malfunction appears to be an intermittent type wherein the valve fails to cycle from CPEN to CLOSE to OPEN immediately after a sustained period of operation in t."e energized (OPEN) mode.
Although the valves are rated for
" continuous operation", Valcar contends that the valves were not designed ta meet the operating conditions requiring the immediate cycling from CPEN to CLOSE to OPEN after a sustained period of continuous energization.
A major source of the problem, therefore, may be a misunderstanding of the term
" continuous operation".
By letter dated July 14, 1980 to Duke Power Company, Valcor transmitted its recommendations in this matter entitled, " Outline -
Suggested Modification Procedures", a copy of which is attached hereto as Enclosure No. 2.
DUPLICATE DOCUMENT Entire document previously entered into system under:
MhcM ANO No. of es:
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