ML20071E583
| ML20071E583 | |
| Person / Time | |
|---|---|
| Site: | Kewaunee  |
| Issue date: | 03/04/1983 |
| From: | Giesler C WISCONSIN PUBLIC SERVICE CORP. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| CON-NRC-83-47, REF-SSINS-6820 IEB-83-01, IEB-83-1, NUDOCS 8303150287 | |
| Download: ML20071E583 (3) | |
Text
f NRC-83-47 WISCONSIN PUBLIC S ERVICE CORPORATION P.O. Box 1200, Green Bay, Wisconsin 54305 March 4, 1983 Mr. J. G. Keppler, Regional Administrator Region III U.S. Nuclear Regulatory Commission
'799 Roosevelt Road Glen Ellyn, IL 60137
Dear Mr. Keppler:
Docket 50-305 Operating License DPR-43 Kewaunee Nuclear Power Plant IE Bulletin 83-01: Failure of Reactor Trip Breakers Westinghouse 08-50 to Open on Automatic Trip Signal The following discussion provides our 7-day written reply addressing the con-cerns of each " action item" in accordance with the requirements of IE Bulletin 83-01. The numbering is consistent with that of the bulletin
" action item."
Item 1 Perform surveillance test of undervoltage trip function independent of the shunt trip within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of receipt of this Bulletin unless equivalent testing has been performed within 5 days.
Those plants for which on-line testability is not provided may complete this item before resuming operation or if currently operating, at the next plant shut-down.
Response
The referenced bulletin was received via telecopy on Friday, February 25, 1983. Surveillance testing of the undervoltage trip function was initiated and completed per SP 47-062 on Saturday, February 26, 1983. This procedure opens the reactor trip breakers independent of the shunt trip and is performed monthly at power. No problems were encountered in performing this procedure.
il 8303150287 '8M304
$DRADOCK 05000305 PDR AR 0 7 1983
o Mr. J. G. Keppler '
March 4, 1983 Page 2 Item 2 Review the maintenance program for conformance to recommended W program (attachment) including frequency and lubricant applied to trip mechanism.
Verify actual implementation of the W program.
If maintenance including lubrication does not conform, initiate such maintenance within 5 days of receipt of this bulletin or provide an alternate maintenance program.
Repeat the testing required in item 1 prior to declaring the breaker OPERABLE.
Response
The preventative maintenance program for the reactor trip breakers was reviewed for conformance to the recommended Westinghouse program. Annual maintenance is performed in accordance with preventative maintenance procedure PMP 47-1.
This procedure requires testing of the breaker operation, observing freedom of mechanism movement, cleaning and lubrication. The lubricant spe-cified in the procedure is not the same as recommended in the Westinghouse data letter attached to the bulletin, as the specified lubricant is no longer available commercially. We have contacted Westinghouse and will revise the PMP to include the currently recommended lubricant, Molykote C-40.
PMP 47-1 has been in place and performed annually since plant startup. We have observed no failures of the reactor trip breakers to perform their intended function. Documentation of preventative maintenance records are maintained in the QA vault at the plant. Since the annual maintenance fre-quency has shown to be adequate to maintain the reactor trip breakers, we feel we conform to the recommended Westinghouse program. The next scheduled preventative maintenance on the reactor trip breakers will be performed during the next refueling outage scheduled to start March 19, 1983.
Item 3 Notify all licensed operators of the failure-to-trip event which occurred at Salem. Review the appropriate emergency operating proce-dures for the event of failure-to-trip with each operator upon his arri-val on-shift.
Response
The licensed operators were informed of the Salem event as they assumed shift responsibilities. The Kewaunee Nuclear Power Plant specific Emergency Operating Procedures for failure to trip events were reviewed by the operators.
In addition, the information contained in the IE Bulletin and this response will be provided to the training department for incorporation in the retraining program.
L
.s Mr. J. G. K:ppler March 4, 1983 Page 3 Item 4d You are reminded of the requirements for prompt notification in accordance with 10 CFR 50.72 in the event of detecting an inoperable RPS breaker.
Response
Plant management personnel are aware of the requirement to report events of this nature in accordance with 10 CFR 50.72.
Very truly yours, N
W C. W. Giesler Vice President - Nuclear Power js cc - Mr. R. L. Nelson, U.S. NRC Resident Inspector Mr. S. A. Varga, U.S. NRC Document Control Desk Director, Office of Inspection & Enforcement, US NRC Subscribed and Sworn to Before M3 This //d/
Day of V7/a d ;
1983 Y
ib k YW No'fary Public, State of Wisconsin My Commission Expires:
March 24, 1985
_ _.