ML19345D841

Forwards IE Info Notice 80-39, Malfunction of Solenoid Valves Mfg by Valcor Engineering Corp. No Written Response Required

ML19345D841
Person / Time
Site:	Perkins, Cherokee
Issue date:	10/31/1980
From:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:	Dail L DUKE POWER CO.
References
NUDOCS 8012170595
Download: ML19345D841 (1)

Text

,

a Rec s

/

oq'o UNITED STATES

~

[

NUCLEAR REGULATORY COMMISSION 7

g g

.. c REGION 11 8

o 101 MARIETTA ST., N.W., SUITE 3100 o

ATLANTA, GEORGIA 30303 e,

OCT 311980 In Reply Refer To:

E2 f;

RII:JPO c50 d 6492 )

%,.y 493,J50-488 kll,v; p.

5 89, 50-490

=>

4

~

g Z

S 5

U ro Duke Power Company N

ATTN:

L. C. Dail, Vice President Design Engineering P. O. Box 33189 Charlotte, NC 28242 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 or response is requested at 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, 0

~~ -. yknq James P. O'Reilly Director

Enclosures:

1.

IE Information Notice No. 80-39 w/ Enclosure 2.

List of Recently Issued IE Information Notices cc w/ encl:

J. T. Moore, Project Manager C913170$q$

UNITED STATES NUCLEAR REGULATORY COMMUSION OFFICE OF INSPECTION AND ENFORCEMENT WASHI!!GTON, D. C. 20555 1

October 31, 1980 IE INFORMATION NOTICE NO. 80-39 :

r& FUNCTION OF SOLEN 0ID VALVES MANUFACTURED BY VALCOR ENGINEERING CORPORATION

?URPOSE:

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 cf Valcor solenoid valves at the McGuire facility. The malfunctioning valves have been identified as Valcor Valve t

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 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 rated 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 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:

h bh ANO No. of pages:

b l

..