ML18065A821
| ML18065A821 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 07/17/1996 |
| From: | Smedley R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9607230079 | |
| Download: ML18065A821 (4) | |
Text
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consumers Power POW ERi Nii MICHlliAN"S-PROliRESS Palisades Nuclear Plant: 27780 Blue Star Memorial Highway, Covert, Ml 49043 July 17, 1996 U. S. Nuclear Regulatory-Commission
.Document Control Desk Washington, DC 20555 DOCKET 50-255 - LICENSE DPR-20 -- PALISADES PLANT CORRECTED PAGES FOR HANDOUT USED AT THE PREDECISIONAL ENFORCEMENT CONFERENCE CONCERNING APPENDIXR COMPLIANCE HELD JUNE 21, 1996 AT REGION Ill On June 21, 1996, Consumers Power Company attended a Predecisio_nal Enforcement Conference at Region Ill concerning 1 O CFR 50 Appendix R compliance for the.
Palisades Plant.
As part of the Consumers Power Company presentation, a document containing technical information was provided to the NRC. After the conference was completed, errors werediscovered in the technical information. The purpose of this letter is to -
dockf.; the corrected information. The pages in error have been revised and are an*
attachment to this letter, with changes noted in the margins.
SUMMARY
OE COMMITMENTS CC Administrator, Region Ill, USNRC
_Project Manager, NRR, USNRC NRC Resident Inspector - Palisades Attachment
--9607230079 96071 7 PDR ADOCK 05000255 Q
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A CMS' ENER<!i'Y COMPANY
ATTACHMENT CONSUMERS POWER COMPANY PALISADES PLANT DOCKET 50-255 PREDECISIONAL ENFORCEMENT CONFERENCE
-10 CFR 50 APPENDIX R COMPLIANCE -
DATED JUNE 21, 1996, TECHNICAL INFORMATION - CORRECTED PAGES 2 Pages.
0
- JUNE 21,-1996. < *,
"*t 10 CFR 50 APPENDIX R COMPLIANCE orscuSSION OF VIOLATIONS VIOLATION 1*EXAMPLE1: DIAGRAM OF IMPACTED FIRE AREAS r----:-----1 r I ---
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10 Revised 7 /10/96
JUNE 21, 1996
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10 CFR 50 APPENDIX R COMPLIANCE DISCUSSION OF VIOLATIONS VIOLATION 1 - EXAMPLE 1: SIGNIFICANCE OF ISSUE ACTUAL SAFETY SIGNIFICANCE:
INVESTIGATION CONCLUDED THAT LOW VOLTAGE CUT-OFF SET POINT WAS CORRECTLY SET. BOARD INOPERABLE ONLY DURING SHORT LCO PERIOD -ACTUAL SAFETY SIGNIFICANCE IS MINIMAL EVEN IF SET POINT NOT CORRECTLY SET, ACTUAL SAFETY SIGNIFICANCE IS LOW BASED ON THE FOLLOWING:
OF THE 5 FIRE AREAS WHERE CREDIT IS GIVEN FOR THE ALTERNATE SHUTDOWN PANEL, ONLY 4 AREAS ARE IMPACTED DIRECTLY BY THIS POTENTIAL PROBLEM PROBABILITY OF DAMAGING FIRE IS LOW:
o LOW TO MODERATE FIRE LOAD o
DETECTION AND AUTOMATIC SUPPRESSION o
FIRE TOURS (SINCE LATE SUMMER 1994)
- o. REQUIRES MULTIPLE AND SELECTIVE FAILURES EVEN IF A DAMAGING FIRE, SAFETY ANALYSIS, SIMULATOR RUNS, AND DISCUSSIONS WITH OPERATORS DEMONSTRATE THAT PLANT WOULD HAVE MAINTAINED LOCAL CONTROL OF AFW. WITH AFW, PLANT COULD ACHIEVE AND MAINTAIN SAFE SHUTDOWN:
o FOR -8 HOURS WITHOUT OPERATOR ACTION (AFW STARTING VERIFIED) o FOR OVER 20 HOURS WITH MINIMAL ACTIONS o
AC POWER RESTORATION -
3 - 5 HOURS o
WHILE IT IS CONCLUDED C-150 WAS OPERABLE, A DISCUSSION OF SAFE SHUTDOWN WITHOUT C-150 IS PROVIDED LATER Revised 7 /10/96 15