ML20154L215
| ML20154L215 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 03/04/1986 |
| From: | George Thomas PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | Noonan V Office of Nuclear Reactor Regulation |
| References | |
| GL-83-28, SBN-956, NUDOCS 8603110423 | |
| Download: ML20154L215 (2) | |
Text
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M George S. Thomas Vice Prehnt-Nuckor Production Putsc Service of New Hampshire New Hampshire Yankee Division March 4, 1986 SBN-956 T.F. 814.2.99 United States Nuclear Regulatory Commission Washington, DC 20555 Attention:
Mr. Vincent S. Noonan, Project Director PWR Project Directorate #5 References (a) Construction Permit CPPR-135 and CPPR-136, Docket Nos.
50-443 and 50-444 (b) USNRC Letter, dated June 18, 1985, " Request for Additional Information Following Preliminary Staff Review of PSNH Response to Generic Letter 83-28," G. W. Knighton to R. J. Harrison Subject : Additional Information Regarding Generic Letter 83-28, Items 4.5.2 and 4.5.3
Dear Sir:
In respMse to the referenced request for additional information, enclosed please f*-d our response to items 4.5.2 and 4.5.3.
This submittal concludes our response to all requests for information described f.n Reference (b).
Very truly yours, h/
'4 George Thomas GST/cjb Enclosure cct ASLB Service List 8603110423 e60304 r
PDR ADOCK 05000443 er A
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l P.O. Box 300. Seabrook, NH 03874
- Telephono (603)474 9521
Enclosure to SBN-956 Item 4.5.2 Applicant needs to state if his plant is currently designed to permit on-line testing of the KrS.
If not, either design modifications that will permit such testing shall be described along with an implementation schedule or justifica-tion for not providing on-line testing capability shall be provided.
Response
The Seabrook Station reactor trip system is designed to permit on-line testing.
Item 4.5.3 Applicant needs to supply results of review of existing or proposed intervals for on-line testing concidering the concerns of 4.5.3.1 to 4.5.3.5 in the generic letter. Proposed Technical Specification changes resulting from this review shall be submitted for review.
Response
Seabrook Station is not an operating facility and as such does not have active Technical Specifications and thus, no on-line testing history. We expect to receive the Proof and Review copy of the proposed Seabrook Technical Specifications in early March 1986. These proposed specifications contain all of the on-line functiona'. testing requirements of Generic Letter 85-09.
Based upon these proposed requirements we of fer the following:
4.5.3.1 and 4.5.3.2 - The Westinghouse Owners Group (WOG), of which we are a member, is conducting tests in this area. As such, we will evaluate the results of the testing when completed and propose changes at that time if necessary.
4.5.3.3 - 1'e reduced redundancy during testing required by Generic Letter 85-09 will only account for a period of about two hours per month. As such, this is a very small percentage of actual operating time.
WOG test results will be reviewed and appropriate changes proposed if necessary.
4.5.3.4 - The WDC designed testing system of the RTS should improve availability and reduce operator error during testing as no jumpers or lifted leads are required.
4.5.3.5 - Component " wear-out" caused by testing cannot be accurately evaluated since we have no operating test history. Generic Letter 85-09 requirements will add an additional 24 cycles each year to the trip breakers. We do not anticipate that this additional cycling will significantly degrade the trip breakers. WOG results of life cycle testing and component wear out will be reviewed and appropriate changes proposed if necessary.
An indepth review of the on-line testing requirements of Generic Letter 85-09 will be conducted during the review stage of the Seabrook Station Technical Specifications.
Any changes resulting from this review will he discussed with the staff at that time. Any changes resulting from the WOG testing results will be discussed with the staf f when they become available.