ML20003E723
| ML20003E723 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 04/01/1981 |
| From: | Paulson W Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20003E724 | List: |
| References | |
| NUDOCS 8104100311 | |
| Download: ML20003E723 (9) | |
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NUCLEAR REGULATORY COMMISSION a
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APR 1 1981 Cocket No. 50-155 LICENSEE:
Consumers Power Company FACILITY: Big Rock Point Plant
SUBJECT:
SUMMARY
OF MEETINC3 WITH CONSUMERS POWER COMPANY HELD ON MARCH 17 AND 18,1981 TO DISCUSS THE BIG ROCK POINT PROBABILISTIC RISK ASSESSMENT On March 17 and 19,1981, the NRC staff met in Bethesda,-Maryland with representatives of Consumers Power Company and their consultants. The purpose of the meetings was to discuss the results of the licensee's Probabilistic Risk Assessment (PRA) of the Big Rock Point Plant. A list of at' endees is enclosed (Enclosure 1).
t The licensee explained that the motivation for the PRA study was their concern regarding projected capital expenditures at the Big Rock Point Plant. These expenditures are exceeding six million dollars per year whereas the licensee's analysis shows that the economic break even point, depending on number of years of plant operation, is between one and four million dollars per year.
Consumers Power Company feels that they cannot spend significant sums of money on solutions that provide little or no increase in safety for the Big Rock Point Plant.
The PRA study objectives were:
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Perform a comprehensive and systematic evaluation of plant safety.
2.
Maintain technical objectivity in this effort.
3.
Explore means of reducing plant risk.
4.
Evaluate effectiveness of regulatory issues using PRA.
5.
Develop a cost effective risk management pmgram for Big Rock Point.
i The licensee has stated that the PRA indicates that there are some highly cost-effective actions that can be taken to reduce risk. These modifications, if inplemented, wogld reduce the frequency of core damage events (currently about 9.8 x 10- per year) by 'a factor of 15 to 20.
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APR 1 1981 The licensee will submit the PRA on March 31, 1981.
PRA-based documen-tation for deferral of certain regulatory requirements, including certain NUREG-0737 items, will also be-submitted on March 31, 1981. The licensee-wants a " provisional acceptance" from the NRC which involves our agreement to defer those items requested by the licensee pending the completion of our detailed review of the PRA. A " provisional acceptance", if agreed to by the NRC, would imply approval of PRA-based licensing decisions for the Big Rock Point Plant.
Some of the NUREG-0737 items that Consumers Power Company identified as being directly affected by PRA are:
II.B.2 Design Review of Plant Shielding and Environmental Qualification of Electrical Equipment for Spaces /
Systems which may be used in Post-Accident Operations II.B.3 Post-Accident Sampling Capability II.F.2 Instrumentation for Detection of Inadequate Core Cooling II.K.3.14 Isolation of Condensers on High Radiation II.K.3.19 Interlock on Recirculation Pumps Loops III.A.l.2 Upgrade Emergency Support Facilities (NUREG-0696)
III.D.3.4 Control Room Habitability Other issues identified by the licensee as being affected by PRA include electrical equipment qualification, fire prctection, systematic evaluation program, generic issues, and IE Bulletins.
If the NRC provides " provisional acceptance" of the licensee's position, Consumers Power Company will initiate detailed design activities on PRA-recomended modifications.
Implementation of the PRA-recomended modifi-cations would be accomplished following NRC's completion of the review of the PRA.
The licensee discussed the PRA methodology, risk outliers, and the proposed short term plan (application to NUREG-0737 and other items).
If the Big Rock Point PRA is accepted by the NRC, the licensee plans to maintain the PRA through updating as better data become available.
The licensee did not do an independent detailed quantificatgon of the probability of failure to scram; rather, a value of 3 x 10- was used based on NUREG-0460. The NRC staff stated that the licensee should review
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this value of failure to scram especially considering the Commission paper (SECY.80-409, September 4,1980) on BWR scram system experience.
The viewgraphs used during the: presentations are enclosed (Enclosure 2).
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Walter A. Paulson, Project Manager Operating Reactors Branch -#5 Division of Licensing i
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MEETING
SUMMARY
DISTRIBUTION Docket files NRC PDR L PDR ORB #5' reading.
T. Novak R. Tedesco G. Lainas J. Heitemes, AEOD.
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G. Zoch S. Varga 4
T.-Ippolito R. Clark J. Stolz B. Youngblood A. Schwencer i
F. Miraglia D. Crutchfield W. Russell J. Olshinski W. Paulson 2
OELD 01&E(3)
H. Smith ACRS(16)
S.. Israel A. Thadani B. Hardin H.' Levin R. Snaider G. Lanik J. Mazetis F..Skopec l'
R. Scholl B..Glordin 4
l A. El-Bassioni 4
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APR 1 1981 Mr. David P. Hoffman cc Mr. Paul A. Perry, Secretary U. S. Environmental Protection Consur.:rs Power Conpany A'gency 212 l'est Michigan Avenue Federal Activities Branch Jackson, Michigan 49201 Region V Office ATTN: EIS COORDINATOR
.sudd L. Bacon, Esquire 230 South Dearborn Street Consumers Power Conpany Chicago, Illinois 60604 212 West Michigan Avenue Jackson, Michigan 49201 Herbert Grossman,- Esq., Chairman Atomic Safety and Licensing Board Joseph Gallo, Esquire U. S. Nuclear Regulatory Comission Isham, Lincoln & Beale Washington, D. C.
20555 1120 Connecticut Avenue Room 325 Dr. Oscar H. Paris Washington, D. C.
20036 Atomic Safety and Licensing Board U. S. Nuclear Regulatory Comission 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 Comission Atomic Safety & Licensing Appeal Board Washington, D. C.
20555 U. S. Nuclear Regulatory Comission Washington, D. C.
20555 Big Rock Point Nuclear Power Plant ATTN: Mr. C. J. Hartman Mr. John O'Neill,11 Plant Superintendent Route 2, Box 44 Charlevoix, Michigan 49720 Maple City, Michigan 49664 Christa-Maria Charlevoix Public Library Route 2, Box 108C 107 Clinton Street Charlevoix, Michigan 49720 Charlevoix, Michigan William J. Scanlon, Esquire Chairman 2034 Pauline Boulevard County Board of Supervisors Ann Arbor, Michigan 48103 Charlevoix County Charlevoix, Michiga.n 49720 Resident Inspector Big Rock Point Plant l-Office of the Governor (2) c/o U.S. NRC Room 1 - Capitol Building RR #3, Box 600 Lansing, Michigan 48913 Charlevoix, Michigan 49720 Director, Criteria and Standards Mr. Jim E. Mills Division Route 2, Box 108C Office of Radiation Programs Charlevoix, Michigan 49720 (ANR-460)
U. S. Environmental Protection Thomas S. Moore Agency Atomic Safety & Licensing Appeal Board Washington, D. C.
20460 U. S. Nuclear Regulatory Comission Washington, D. C.
20555
Mr. David P. Hoffees APR 1 1961 CC Dr. John H. Buck Atomic Safety and Lleensing Appeal Beerd U. S. Nuclear Regulatory Cemeission Washington, D. C.
20555 Ms. JoAnn Bier 204 Clinton Street Charlevoix, Michigan 49720 O
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ENCLOSURE 1 Page 1 of 2-
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ATTENDANCE LIST MEETING MARCH 17, 1981 NRC AND CONSUMERS POWER' COMPANY
-(BIG ROCK POINT)
NAME AFFILIATION W. Paulson NRC Frederick Buckman
_ Consumers Power Gregory C. Withrow Consumers Power S. Israel NRC David Leaver Wood-Leaver & Assoc.
i Milan Stewart EG8G Idaho, Inc.
Fred Balkovetz EG&G Idaho, Inc.
David VandeWalle Consumers Power Patrick Donnelly Consumers Power Ashok Thadani NRC/ DST David Blanchard Consumers Power John Thompson Science Applications Brad Hardin NRC/RSB James vonHerrmann Wood-Leaver & Assoc.
Wes Brinsfield Science Applications, Inc.
Anthony Tome Science Applications, Inc.
Paul Wood Wood-Leaver & Assoc.
Howard Levin NRC/DE NRC/DL/C-0RB#5 Dennis Crutchfield Richard Snaider NRC/DL/0RB#5 George Lanik NRC/AE00 Rossell B. DeWitt CPCo Kenneth D. Brienzo CPCo R.A. Vincent CPCo Bob Marusich CPCo Jerry Mazetis NRC/NRR/RSB G. Lainas am)
NRC/AD-SA:DL F. Skopec pm)
NRC/ :
R. Scholl parttime)
NRC/SEPB I
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ENCLOSURE 1 Page 2 of 2 ATTENDANCE LIST MEETING ON MARCH 18, 1981 NRC AND CONSUMERS POWER COMPANY (BIG ROCK POINT)
NAME AFFILIATION W. Paulson NRC/0RB#5 S. Israel NRC
- 0. Crutchfield NRC/DL/C-ORB #S B. Glordin NRC Paul Wood Wood-Leaver & Assoc.
Fred Balkovetz EG8G Idaho, Inc.
C.F. Obenchain EG&G Idaho, Inc.
Bob Marusich CPCo Pat Donnelly CPCo David Leaver Wood-Leaver & Assoc.
R.A. Vincent CPCo i
Anthony Tome Science Applications Wes Brunsfield SAI Ken Brienzo CPCo David Blanchard CPCo David VandeWalle CPCo A. Thadani NRC A. El-Bassioni NRC 2
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