ML18087A515
| ML18087A515 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 09/12/1980 |
| From: | Chiramal M NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| To: | NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| References | |
| TASK-AE, TASK-E012, TASK-E12 AEOD-E012, AEOD-E12, NUDOCS 8210120369 | |
| Download: ML18087A515 (1) | |
Text
. *;
SEP 1 2 1980 AEOD/E012 MEMORANDUM FOR:
File This is an internal, pre-decisional document not necessarily representing a position of AEOD or NRC.
FROM:
SUBJECT:
Matthew Ch irama 1 Office for Ai1alysis and Evaluation of
- Operational Data SALE~, l ~ SOLEtWID VALVE OF CONTAI!"JMENT FAN COIL UNIT (CFCU) SERVlCE WATER FLOW
~CONTROL VALVE While reviewing a list of LERs on solenoid valves for generic problems associated
"'With. plant control air systems, I car.:-e across six {6) LERs *an Salem 1 (LERs 78-85 1 "79-1, 79-15,....80-22, 80-24, and 80-39).on failures of the subject solenoid valves *
. The Project Manager was. contacted and through him the licensee was also contacted.
- The licensee has been aware of the prob.leiil and has been investigating the cause of the failure of these particular valves. These solenoid valves are special
- valves obtained by the licensee from ASCo for use in ~he service water _sy.stem for flow control to the CFCUs.
fhe solenoids have ac voltage coils adapted for de voltage application and low (35 psig) air pressure control. The valves _have been running at a higher temper-ature than des.igned for and have caused sticking. dur1ng operation. This sti.cking
.has caused the failures of the valves.
The licensee has replaced the -solenoi.d valves of Sale.il 2 ~id is in the process of replacing Salem l valves with valves that* are designed and tested for the required application.
cc:
C~-Michelson
/s r.
Matthew Chiramal Office for Analysis a~d Evaluation
- of Operational Data
.'