ML18051B410
| ML18051B410 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 05/23/1985 |
| From: | Johnson B CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TASK-15-02, TASK-15-2, TASK-RR IEB-80-04, IEB-80-4, NUDOCS 8506070465 | |
| Download: ML18051B410 (1) | |
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consumers Power company General Offices: 1945 West P-arn_!!!I Road, Jackson, Ml 49201 *:{517J_ 7Sa-0550 May 23, 1985
- Director, Nuclear Reactor Regulation US Nuclear Regulatory Commission Washington, DC 20555 DOCKET 50-255 - LICENSE DPR PALISADES PLANT -
EVALUATION OF PAL_ISADES - MSLB SINGLE-FAILURE BACKFITS Consumers Power Company letter dated August 21, 1984 and entitled SEP Topic XV-2 "Spectrum of St_eam Piping Failures Inside and Outside _Containment,"
committed to submit a final Probabilistic Risk Assessment (PRA) and cost-benefit analysis on the.actual safety significance of the two-steam generator - blowdown event as well as the most cost-effective modifications (if modification is required) to reduce the likelihood of this event.
During this analysis it was determined that the safety concerns of IE Bulletin 80-04 which covers the subject of Main Steam Line Break with Continued Feedwater Additi.on could be included.
This inclusion, meant a reanalysis of the commitment made in our July 26, 1983 submittal to provide redundant isolation of the main feedwater and bypass line to further insure that a single failure of the valves in either of these lines did not result in continuous feedwater coincident with the main steam line break event.
The final results of the analysis and examinations for these two issues are presented in t~e-form of the attached report.
/
Con§umers Power Company would like to request a meeting with the NRC staff at your earliest convenience to discuss the analysis and conclusions submitted in the attached report.
Brian D Johnson Staff Licensing Engineer CC Administrator, Region III, USNRC NRC Resident Inspector - Palisades Attachments OC0585-0018A-NL02
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