ML20041C378
| ML20041C378 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 02/22/1982 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Vandewalle D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| Shared Package | |
| ML20041C379 | List: |
| References | |
| CON-FIN-A-6425-1, TASK-06-07.C1, TASK-6-7.C1, TASK-RR LSO5-82-02-103, LSO5-82-2-103, NUDOCS 8203010247 | |
| Download: ML20041C378 (5) | |
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1 February 22, 1982 Docket No. 50-155 et to LS05 02-103
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Mr. David J. VandeWalle Nuclear Licensing Administrator
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A' Consumers Power Company 1945 W. Parnall Road D
Jackson, Michigan 49201
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Dear Mr. VandeWalle:
SUBJECT:
SEP TOPIC VI-7.C.1, APPENDIX K - ELECTRICAL INSTRUMENTATION AND CONTROL (EI&C) RE-REVIEWS, SAFETY EVALUATION FOR BIG ROCK POINT is our contractor's final Technical Evaluation Report on this topic for your facility. is a revised Safety Evaluation Re-port based on Enclosure 1. has been revised to reflect the additional information provided in your December 9,1931 letter.
Ilith regard to the referenced topic, the staff has concluded your facil-ity meets current licensing criteria.
Sincerely, i
Dennis M. Crutchfi&ld, Chief Operating Reactors Branch No. 5 Division of Licensing
Enclosures:
As stated cc w/ enclosures:
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, NRC FORM 318 (10-80) NRCM ONO OFFICIAL RECORD COPY usa m m i-- m m 1.
Big Rock Point Docket No. 50-155 Rev. 2/8/82 Mr. David J. VandeWalle
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CC Mr. Paul A. Perry, Secretary U. S. Environmental Protection Consu.mers Power Company Agency 212 West Michigan Avenue Federal Activities Branch Jackson, Michigan 49201 Region V Office ATTN: Regional Radiation Representative Judd L. Bacon, Esquire 230 South Dearborn Street Consumers Power Company Chicago, Illinois 60604 212 West Michigan Avenue Jackson, Michigan 49201 Peter B. Bloch, Chairman Atomic Safety and Licensing Board Joseph Gallo, Esquire U. S. Nuclear Regulatory Commission Isham, Lincoln & Beale Washington, D. C.
20555 d
1120 Connecticut Avenue Room 325 Dr. Oscar H. Paris Washington, D. C.
20036
. Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission Peter W. Steketee, Esquire Washington, D. C.
20555 505 Peoples Building Grand Rapids, Michigan 49503 Mr. Frederick J. Shon Atomic Safety and Licensing Board Alan S. Rosenthal, Esq., Chairman' U. S. Nuclear Regulatory Commission Atomic Safety & Licensing Appeal Board Washington, D. 'C.
20555 U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Big Rock Point Nuclear Power Plant ATTN: Mr. C. J. Hartman Mr. John O'Neill, II Plant Superintendent Route 2, Box 44 Charlevoix, Michigan 49720 Maple City, Michigan 49664 Christa-Maria Charlevoix Public Library Charlevoix, Michigan 49720 Route 2, Box 108C 107 Clinton Street Charlevoix, Michigan William J. Scanlon, Esquire Chairman 2034 Pauline Boulevard County Board of Supervisors Ann Arbor, Mich'igan 48103 Charlevoix County Charlevoix, Michigan 49720 Resident Inspector Big Rock Point Plant Office of the G'overnor (2) c/o U.S. NRC
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Room 1 - Capitol Building RR #3, Box 600 Lansing, Michigan 48913 Charlevoix, Michigan 49720 Herbert Semmel Mr. Jim E. Mills Counsel for Christa Maria, et al.
Route 2, Box 108C Urban Law Institute Charlevoix, Michigan 49720 Antioch School of Law.
263316th Street, NW Washington, D.
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20460 O
' Big. Rock Point d
Dock'et No, 50-155 Mr. David J. VandeWalle l
cc Dr. John H. Buck Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Ms. JoAnn Bier 204 C'inton Street Charlevoix, Michigan 49720 Thomas S. Moore Atomic Safety and Licensing Appeal Board U. S, Nuclear Regulatory Commission Washington, D. C.
20555
' James G Keppler, Regional Administrator Nuclear Regulatory Commission, Region III Office of Inspection and Enforcement 799' Roosevelt Road Glen Ellyn, Illinois 60137 e
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SYSTEMATIC EVALUATION PROGRAM TOPIC VI-7.C.I BIG ROCK POINT TOPIC:
VI-7.C.1, Appendix K - Electrical Instrumentation and Control (EI&C Re-reviews)
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I.
INTRODUCTION
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During the Appendix K reviews of some facil'itids initially considered, a detailed EI&C review was not performed.
Accordingly we intended to re-review the modified ECCS of these facilities to confirm that it is designed to meet the most 1,imiting single failure.
Several types of failure were considered as candidates for designation as the most limiting.
Because of the scope of the other SEP Topics, it was decided that, for the purpose of this study (and to reduce replication of effort on other SEP Topics),
the loss of a single.ac or de onsite power system was the most limiting failure.
Accordingly, this topic was limited to an evaluation of,the independence between the onsite power systems.
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II.
REVIEW CRITERIA The review criteria are presented in Section 2 of EG&G Report C683F,
" Independence of Redundant Onsite Power Systems."
III.
RELATED SAFETY TOPICS AND INTERFACES The scope of review for this topic was limited to avoid duplication of effort "since some aspects of the review were performed under related topics.
The related topics and the subject matter are identified below.
Each of the g
re, lated top.ic reports contain the acceptance criteria and review guidance for its subject matter.
VI-4 Bypass and Reset of Engineered Safety Features (B-24)'
VI-7.A.3 ECCS Actuation System VI-7.B ESF Switchover from Injection to Recirculation-VI-7.C.2 Failure Mode Analysis-ECCS VI-7.D Long Term Cooling Passive Failures Te.g., flooding)
VI-10. A-Testing of Reactor Protection Systems V!I-1.A Reactor Trip System Isolation VII-3
. Systems Required for Safe Shutdown
_s VIII-2 Onsite Emergency Power Systems VIII-3 Emergency de Power Systems VIII-4 Electrical Penetrations IX-6
. Fire' Protection The conclusion that suitable isolation devices are provided is a basic assump, tion for Topics VI-7.C.2 and VII-3.
\\c IV. REVIEW GUIDELINES The review guidelines are presented in Section 2 of Report EGG-EA-5755,
" Independence of Redundant Onsite Power Systems."
V.
EVALUATION As noted in the report, " Independence of Redundant Onsite Power Systems",
the separation and independence between redundant systems is not compromised by the onsite power system.
The review of docketed information and plant electrical drawings indicates that the Big Rock Point onsite ac and dc emergency power sources and distribution system meet the current licensing requirements for indepen-dence of onsite power systems and is in accordance with the Commission Memorandum and Order dated May 26, 1976.
In the Commission Memorandum and Order Big Rock Point (BRP) was granted a lifetime exemption from the single failure requirements of 10 CFR Part 50.46 and Appendix K, Paragraph I.D.1 as applied to a LOCA caused by a break in a core spray line and a concurrent single failure in the remaining core spray system.
Included in the order was a plant-life exemption from the requirement that the ECCS short-term and long-term cooling functions be invulnerable to a single failure which disables onsite power assuming offsite power is available. This was allowed in view of the high availability of offsite power at BRP, together with improved reliability of the onsite diesel and guaranteed availability of a backup diesel for long-term cooling. The Director's comments note that, in view of the~ small size of this plant compared with the system capacity, trips of the plant due to internal causes are relatively unlikely to cause a loss of offsite power.
VI.
CONCLUSION As a result of our review of our contractor's work the. staff concludes that the subject _ ac and dc systems are acceptable and satisfy the conditions of the exemption.
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