ML19031C037
| ML19031C037 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 10/28/1977 |
| From: | Schneider F Public Service Electric & Gas Co |
| To: | Grier B NRC/IE, NRC Region 1 |
| References | |
| IEB-77-002 | |
| Download: ML19031C037 (2) | |
Text
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- Frederick W. Schneider Public Service Electric and Gas Company 80 Park Place Newark, N.J. 07101 201 /622-7000 I
Vice President Production Mr. Boyce H. Grier, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406
Dear Mr. Grier:
NRC IE BULLETIN NO. 77-02 October 28, 1977 "POTENTIAL FAILURE MECHANISM IN CERTAIN WESTINGHOUSE (W) AR RELAYS WITH_ LATCH ATTACHMENTS" NO. 1 AND 2 UNITS SALEM NUCLEAR GENERATING STATION In response to your letter of September 12, 1977 transmitting NRC IE Bulletin No. 77-02, we have investigated this m~tter with respect to applicability of Westinghouse Nuclear Service Division Technical Bulletin NSD-TB-77-10 criteria to Salem No. 1 and 2 Units.
The following summarizes the results of our investigation.
Salem No. 1 Unit
- 1.
All AR relays and replacement _car_tridge __.as_.sembl-ies--were
- -r.~moved. from the station. -storeroom and inspected by station Quality Assurance in accordance with Westinghouse Technical Bulletin NSD-TB-77-10.
All were found to have been manu-factured after.the mid 1973 cutoff date and are therefore rejectable.
Rejected components were tagged with Q.A. _Hold Tags and placed in the Hold Area awaiting receipt of modification kits from Westinghouse.
A Work Order has been initiated (PD-3807) to ver~fy correct relays are installed in the plant.
This inspection is presently in progress and will be completed by December* 1, 1977.
Approximately 90% of the installed relays have been
,/
Mr. B.H. Grier 2 -
lO 77 inspected and found to be of the acceptable design.
Documentation of the inspection results will be on file at the station by December 1, 1977.
- 2.
Inventory cards for an AR relays and cartridge assemblies were removed from file and a caution bote was added stating that any items received on the three subject folio numbers shall be inspected by a Performance Supervisor ih accordance with the Technical Bulletin before they are placed in stock.
Salem No. 2 Unit
- 1.
Our review of the manufacturing dates indicates that all*AR relays installed in Salem Unit No. 2 were manufactured* prior to June 1973 and do not contain the potential defective latch mechanism.
There are no spare AR relays on the Unit 2 construction site other.than previously examined installed spares.
Documentation of the review results are on file* in the Site Engineering Office.
- 2.
Our personnel have. been made aware of the potential problem with Westinghouse AR relays and have been instructed to not purchase any additional AR relays until--this problem is resolved.
On future applications for AR relays we will use only thos~ relays manufactured prior to June 1973 or relays modified to resolve the problem.
If ycm requrre=addi t+/-dnal-:::-informa:t+/-ou-;--we-will -be pleased°" to-dis-criss- +/-t with you.
Very truly yours,
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