ML19340C854
| ML19340C854 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 10/31/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Aswell D LOUISIANA POWER & LIGHT CO. |
| References | |
| NUDOCS 8012170818 | |
| Download: ML19340C854 (1) | |
Text
T T t D*
'm; UNITED STATES J.
NUCLEAR REGULATORi' COMMISSICN 5
REGION IV
= x A['f s
(
611 RYAN PLAZA DRIVE. SUITE 1000 m
ARLINGTON. TEX As 76011 October 31, 1980 y
b In Reply Refer To:
7?
];;,
RIV rh >
Docket No. 50-382/IE Information Notice No. 80-39 hku l[h.
W-SMlr E
xx u+v 1
%?i cc m
. Louisiana Power and Light C:,,
Mr. D. L. Aswell Vice President of Power Production 142 Delarende Street New Orleans, Louisiana 70174 Gentlemen:
The enclosed IE Infor=ation Notice provides early notification of an event that
=ay 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 specific licensee actions may be issued.
If you have questions regarding this matter, please contact me.
Sincerely, l --(/-
-y a
\\
s fC,
- } ! '-
Karl V. Seyfrit Director Enr asures:
1.
IE Information Notice No. 80-39 2.
List of Recently issued IE Information Notices 8012170 Tl8
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 PLTPOSE:
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 i
manufacturer that did not meet the requirements of IE Bulletin No. 79-01 and j
its amendments, licensees and holders of construction permits should take into account the problem identified in this Information Notice prior to making any I
similar substitution.
BACKGROUND:
By TWX dated June 27, 1980, Valcor submitted a preliminary 10 CFR Part 21 Report addressing the malfunctioniag af 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 l
Assurance Report", a copy of which is attached hereto as Enclosure No. 1.
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 i
of operat! in 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 I
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, l
his matter entitled, " Outline -
of which is attached hereto as DUPLICATE DOCUMENT Entire document previously entered into system under:
ANO h M M k f M k No. of psges:
l l
l
--