ML19345D804
| ML19345D804 | |
| Person / Time | |
|---|---|
| Site: | Hatch, Vogtle  |
| Issue date: | 10/31/1980 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | John Miller GEORGIA POWER CO. |
| References | |
| NUDOCS 8012170016 | |
| Download: ML19345D804 (1) | |
Text
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o UNITED STATES 48" NUCLEAR REGULATORY COMMISSION a
REGION 11 g
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101 MARIETTA sT., N.W., sulTE 3100 g
ATLANTA, GEORGIA 30303 OCT 311%D
-y In Reply Refer To:
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Q 507424, 50-425 r.:
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<W Georgia Power Company a>
ca ATTN:
J. H. Miller, Jr.
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~'j Executive Vice President O
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fj 270 Peachtree Street c)
Atlanta, GA 30303 Gentlemen:
The enclosed 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 cr response is requested ac this time; however, contingent upon the results of further staff evaluation, a Bulletin of Circular recom-mending or requesting specific licensee actions may be issued.
If you have questions regarding this matter, please contact me.
Sincerely, m~
James P. O'Reillf. /
Director
Enclosures:
I 1.
IE Information Notice No. 80-39 w/ Enclosure 2.
List of Recently Issued IE Information Notices l
cc w/ encl:
M. Manry, Plant Manager C. E. Belflower, Site QA Supervisor I
W. A. Widner, Vice President and General Manager-Nuclear Generatica K. M. Gillespie, Construction Project Manager
- 3. D. Groover, QA Site Supervisor D. E. Dutton, Project General Manager l
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L'FITED STATES NUCLEAR REGULATORY COMMISSION 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 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. The malfunctioning valves have been identified as Valcor Valve Model No. 52600-554-1.
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 britf, 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 operatic-in the energized (OPEN) mode. Although the valves a re rated for
" continuous operation", Valcor contends that the valves were not 1esigned to meet the operating conditions requiring the immediate cycling froa OPEN 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:
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No. of pages:
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