ML19340C858
| ML19340C858 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 10/31/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Koester G KANSAS GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8012170832 | |
| Download: ML19340C858 (1) | |
Text
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- UNITED STATES i
NUCLEAR REGULATORY COMMISSION t
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REGION IV
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611 RYAN PLAZA DRIVE. SUITE 1000 O
8 ARLINGTON. TEX As 76011 october 31, 1980 In Reply Refer To:
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Docket No.
STN 50-482/IE Information Notice No. 80-39 M'
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Attn:
Mr. Glenn L. Koester g
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Vice President-Nuclear m
Post Office Box 208 Wichita, Kansas 67201 Gentlemen:
The enclosed IE Information Notice provides early notification of an event that may have safety significance.
Accordingly, you should review the Information Notice for possible applicability to your facility.
No specific action or response is requested at this time; however, contingent upon the results of further staff evaluation, a Bulletin or Circular recom-mending or requesting spec.~'ic licensee actions may be issued.
If you have questions regarding this mauter, please contact me.
Sincerely, ll i
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Enclosures:
1.
IE Infor=ation Notice No. 80-39 2.
List of Recently issued IE Information Notices cc: w/ enclosures Messrs. Nicholas A. Petrick, SNUP?S D.' T. McPhee, Kansas City. aver and Light Company Gerald Charnoff, Shaw, Pittman, Potts & Trowbridge E. W. Creel, Kansas Gas and Electric Company 8 01s 17 o g32_
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SSINS No.-
6835 Accession No.:
8008220245 UNITED STATES NUCLEAR REGULATORY CO.TIISSION OFFICE OF INSPECTION AND uiFORCEMENT WASHINGTON, D. C. 20555 IE Information Notice No. 80-39 Date:
October 31, 1980 Page 1 of 1 MALFUNCTION OF SOLEN 0ID VALVES MANUFACIURED BY VALCOR ENGINEERING CORPORATION PURPOSE:
The intent of this Information Notice is to alart 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 take into account the problem identified in this Information Notice prior to making any similar substitution.
BACKGROUND:
By TWX dated June 27, 1980, Valcor submitted a preliminary 10 CFR Part 21 Report addressing the malfunctioning of Valcor solenoid valves at the McGuire facility.
'fhe malfunctioning valves have been identified as Valcor Valve Model No. V52600-554-1.
This TWX was subsequently followed by a letter dated l
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.
l In brief, the malfunction appears to be an intermittent type wherein the valve l
fails to cycle from OPEN to CLOSE to OPEN immediately after a sustained period l
of operation in the energized (OPEN) mode.
Although the valves are rated for
" continuous operation", Valcor contends that the valves were not designed to meet the operating conditions requiring the immediate cycling from OPEN to l
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, lis matter entitled, "Our1.ine -
DUPLICATE DOCUMENT t
Entire document previously entered into system under:
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of pages:
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