ML19340E146
| ML19340E146 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point, Palisades File:Consumers Energy icon.png |
| Issue date: | 11/14/1980 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Dewitt R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| NUDOCS 8101060501 | |
| Download: ML19340E146 (2) | |
Text
'
r.a rec o,
UNITED STATES g
NUCLEAR REGULATORY COMMISSION y
),,
e REGION lli
% '....,o#[
o, 799 ROOSEVELT ROAD GLEN ELLYN. lLLINOls 6o137 November 14, 1980 Those on Attached Address Listing:
Enclosed is IE Bulletin No. 80-23 which requires action by you with regard to your nuclear power facility.
In order to assist the NRC in evaluating the value/ impact of each bulletin on licensees, it would be helpful if you would provide us an estimate of the manpower expended in conduct of the review and preparation of the report (s) required by the bulletin. Please estimate separately the manpower associated with corrective actions necessary following identification of problems through the bulletin.
Should you have any questions regarding this bulletin or the actions re-quired by you, please contact this office.
Sincerely, i
ss -
gn h ees G. Kepplek'
~
Director l
Enclosure:
cc w/ encl:
Mr. D. W. Kane, Sargent & Lundy Mr. Gary N. Wright, Chief i
Division of Nuclear Safety i
Reproduction Unit NRC 20b
.X
RIII's CORPORATE ADDRESSES FOR OPERATING LICENSEES AND CONSTRUCTION PERMIT HOLDERS (BW's and PWR's)
Docket No. 50-440 Docket No. 50-441 The Cleveland Electric Illuminating Company ATTN:
Mr. Dalwyn R. Davidson
- f Vice President - Engineering SJ t t P. O. Box 5000.
Cleveland, OH 44101 l'
-5 l
'a cc w/ enc 1:
75 Central Files Director, NRR/DPM jj Director, NRR/ DOR PDR Local PDR NSIC TIC Harold W. Kohn, Power Siting Commission Mr. Daniel D. Wilt, Attorney Helen Evans, State of Ohio Docket No. 50-155 Docket No. 50-255 Consumers Power Company ATTN:
Mr. R. B. DeWitt Vice President Nuclear Operations 212 West Michigan Avenue Jackson, MI 4920I cc w/ enc 1:
Mr. D. P. Hoffman, Nuclear Resident Inspectors, RIII Licensing Administrator PDR Mr.1:. J. Hartman, Local PDR P
t Superintendent NSIC M
. W. Montross, Manager TIC tral Files Ronald Callen, Michigan trector, NRR/DPM Public Service Commission Director, NRR/DOP Myron M. Cherry, Chicago AEOD y
S$1NS No.
6820 Accession No.
8008220257 IEB 80-23 UNITED STATES l
NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555
~~
November 14, 1980 IE_ Bulletin No. 80-23:
FAILURES OF SOLEN 0ID VALVES MANUFACTURED BY VALCOR ENGINEERING CORPORATION
==
Introduction:==
l Valcor Engineering Corporation (Valcor) has submitted 10 CFR Part 21 Reports addressing failures of Valcor solenoid valves used at nuclear power facilities.
l These failures have occurred at nuclear facilities owned by Duke Power Company and Omaha Public Power District, and are purportedly limited to solenoid valves having part numbers (P/N's) V70900-21-1 and V70900-21-3.
The information presented in this bulletin is intended to shed light on the defective solenoid valves so that appropriate actions can be taken to circum-vent the degradation of any safety related system using such solenoid valves.
DISCUSSION:
The specific Valcor solenoid valves addressed herein were purportedly designed as Class IE components.
However, in light of the reported failures, it appears that neither the design nor the qualification tests were adequate for Class IE service.
Valcor has attributed the failures to a latent defect in the magnet wire.
Valcor believes that this defect manifests itself when the selenoid valves are continuously energized at elevated temperatures by ao incompata-bility between the magnet wire's polyvinyl varnish coating and the wire's polyimide insulation which causes a dielectric breakdown leading to turn-to-turn shorts within the coil.
Valcor states that the above incompatability is limited to solenoid valves having P/N's V70900-21-1 and V70900-21-3, and that all customers affected by the aforementioned defect have been notified.
A listing of Valcor customers l
so notified and valves purchased follows.
CUSTOMER P.O. NO.
VALVE P/N QTY Anchor-Darling P-827 V70900-21-1,-3 24 Anchor-Darling N663 V70900-21-1 6
Cesare Bonetti (Italy) 1535/79 V70900-21-3 10 Duke Power Company E95188-11 V70900-21-3 100 Duke (Mill Power)
C-97733 V70900-21-1,-3 335 Duke Power Company E97822-11 V70900-21-3 70 Ralph Hiller HA-18 Mill Power E5246:
Omaha Public Power Dist.
43472 DUPLICATE DOCUMENT Stone and Webster L000 i Copes Vulcan 911,5!
Entire document previously entered into system under:
%butO W' ANO No. of pages:
m, - - - -, -
g w-w
,,.e w-
~w v
w ~--
.-,