ML19340C853
| ML19340C853 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 10/31/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Cavanaugh W ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 8012170816 | |
| Download: ML19340C853 (1) | |
Text
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UMTED STATES CENTRAL FILES f.4,,' + g e
PDR:HQ NUCLEAR REGULATORY COMMISSION LPDR k"% /
c REGION IV TIC 2.% 3,Ia 1,,
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611 RYAN PLAZA DRIVE. SulTE 1000 M
S ARLINGTON. TEXAS 76011 Octob e.- 31, 1980 STATE Docket Nos.
50-313 50-368 Arkansas Power and Light Company AI"IN:
Mr. William Cavanaugh III Vice President of Generation and Construction P. O. Box 551 Little Rock, Arkansas 72203 Gentlemen:
The enclosed IE Infor=ation Notice provides early notification of an event that
=ay have sr.it. y significance. Accordingly, you should review the Information Notice G r possible applicability to your facilities.
No specific action or response is requested at this ti=e; however, contingent upon the results of furtner staff evaluation, a Bulletin or Circular recom-nending or requesting specific licensee actions =ay be issued.
If you have questions regarding this matter, please contact me.
Sincerely,
/_
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'Karl V. Seyfrit)j Director
Enclosures:
1.
IE Infor=ation Notice No. 80-39 2.
List of Recently issued IE Information Notices cc:
James ?. O'Hanlon, Plant Manager
.rkansas Nuclear One
?. O. Box 608 Russellville, Arkansas 72801 8012170 y /c
SSINS No.
6835 Accession No.
8008220245 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D. C. 20555 IE Information Notice No. 80-39 Date:
October 31, 1980 Page 1 of 1 MALFUNCTION OF SOLEN 0ID 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 Valcor Valve Model No. V52600-554-1.
Valcor has informed 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 cake into account the problem identified in this Information Notice prior to making any similar substitution.
l BACKGROUND:
l By TWX dated June 27, 1980, Valcor submitteo a preliminary 10 CFR Part 21 l
Report addressing the malfunctioning of Valcor solenoid valves at the McGuire facility.
The malfunctioning valves have been identified as Valcor Valve Model No. V52600-554-1.
This TWX was subsequently followed by a letter dated July 3, 1980, transmitting a more detailed Part 21 Report entitled, " Quality Assurance 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 OPEN to CLOSE to OPEN immediately after a sustained period of operation in the energized (OPEN) mode. Although the valves are ated for
" continuous operation", Valcor contends that the valves were not designed to meet the operating conditions requiring the immediate cycling from OPEN to CLOSE to OPEN after a sustained period of continuous energi2ation.
A major source of the problem, therefore, may be a misunderstanding of the term y 14, 1980 to Duke Power Company, is matter entitled, " Outline -
DUPLICATE DOCUMENT i wnien is attached hereto as Entire document previously entered into system under:
ANO b h h 0 k h W No. of pages:
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