ML20101L809
| ML20101L809 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom, Limerick  |
| Issue date: | 03/29/1996 |
| From: | Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9604040228 | |
| Download: ML20101L809 (1) | |
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l PECO NUCLEAR ncum-c-eev Nuclear Group Headquarters A UN/I of ITCO DJucy 965 Chesterbrook Boulevard Wayne, PA 19087-5691 i
l March 29,1996 Docket Nos. 50-277 50-278 50-352 50-353 License Nos. DPR-44 U.S. Nuclear Regulatory Commission DPR-56 1
Attn: Document Control Desk NPF-39 Washington, DC 20555 NPF-85
Subject:
Peach Bottom Atomic Power Station, Units 2 and 3 Limerick Generating Station, Units 1 and 2
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Response to the BWROG RRG Interim Recommendations l
Regarding the Viton CRD SSPV Response Time Delay i
Gentlemen:
On February 16,1996, the Bolling Water Reactor Owners Group's (BWROG) Regulatory Response Group (RRG) provided guidance related to testing of dual-type, ASCO, scram-solenold, pilot valves (SSPVs) with i
Viton internals and testing of the Alternate Rod insertion (ARI) system.
l PECO Energy intends to utilize this guidance in revising our testing programs for the SSPVs. Specifically, we will assure that the 120-day test includes a representative sample of "Viton SSPV control rods" and i
"Buna-N SSPV control rods." A reference sample of Viton SSPVs (consisting of 5% but not less than 5 rods) will be tested on a 60-day, surveillance cycle. PECO Energy intends to become a member of the BWROG subcommittee addressing the Viton SSPV issue. Data gathered from both the representative and reference j
samples will be sent to the subcommittee which will evaluate this data against industry and plant specific data. The subcommittee, once adequate data is available, will provide additional recommendations related to Viton SSPV performance.
PECO Energy will continue to test the ARI system to assure that it functions properly. This testing will be done once a cycle.
If you have any questions or require additional information, please do not hesitate to contact us.
1 Very truly yours, b.a.6 G. A. Hunger, #4 Director - Licensing cc:
A. C. Thadani, USNRC T. T. Martin, Administrator, USNRC, Region I
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N. S. Perry, USNRC Senior Resident Inspector, LGS q\\
W. L. Schmidt, USNRC Senior Resident Inspector, PBAPS
.c U D. L Skeen, USNRC
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" '9M47)dO228 960329