ML19296B149
| ML19296B149 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 01/22/1980 |
| From: | Wetmore J Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19296B150 | List: |
| References | |
| TASK-03-05.A, TASK-3-5.A, TASK-RR NUDOCS 8002200164 | |
| Download: ML19296B149 (5) | |
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January 22, 1980 Docket No. 50-155 LICENSEE: Consumers Power Company FACILITY: Big Rock Point SUBJ ECT:
SUMMARY
OF DECEMBER 7,1979 MEETING REGARDING PIPE BREAKS INSIDE CONTAINMENT ( SEP TOPIC III-5. A)
On December 7,1979, the NRC staff met with Consumers Power Company (CPC) and their consultants in Bethesda, Mary. land.
A list of meeting attendees is attached (Attachment 1). The purpose of the meeting was to discuss the pro-gress CPC has made to date on the analysis of high energy line breaks inside containment at Big Rock Point.
A summary of important points follows:
1.
CPC's consultant, Nutech, provided a status report on the analysis of pipe breaks inside containment at Big Rock Point (see copies of view-graphs in Attachment 2).
The analysis to date has identified areas in the recirculation pump room that will require pipe break protection.
Other areas inside containment are still being analyzed.
2.
CPC has considered a number of possible solutions to the n ad for pipe break protection in the recirculation pump room.
These include (1) making structural changes, (2) rerouting and relocating safety related piping, cables and equipment, (3) utilizing a mechanistic approach to selecting break locations which could lead to a reduced number of postulated break lo;ations that have to be considered, and (4) implementing a combination of augmented ISI and leak detection in lieu of other design changes.
3.
Tha augmented ISI plus leak detection approach utilizes an accelerated ISI schedule which would be based on fracture mechanics evaluations and a system of local acoustic emission leak detectors to assure that breaks in high energy lines c3 not occur (see copies of viewgraphs in Attach-ment 3).
CPC prefers this approach and asked the NRC staff for feedback as to its general acceptability.
4.
The staff indicated that it is considering the generic feasibility of this type of an approach when other approaches or combinations of approaches prove to be impractical in a particular application.
A staff position on the subject is being developed.
We committed to advise CPC of our position as soon as it is finalized -- sometime in the near future. We asked CPC not to proceed with any particular fix in the recirculation pump room until they hear from us.
In the intarim CPC will continue to analyze the other areas inside containment.
J ck Wetmore, Project Manager i
gerating Reactors Branch #2 1 vision of Operating Reactors Attachments:
as stated
i Janua ry 22, 1980 cc Mr. Paul A. Perry, Secretary U. S. Environmental Protection Consumers Power Coapany Agency 212 West Michigan Avenue Federal Activities Branch Jackson, Michigan 49201 Region V Office ATTN:
EIS COORDINATOR Judd L. Bacon, Esquire 230 South Dearcorn Street Consumers Power Company Chicago, Illinois 60604 212 West Michigan Avenue Jackson, Michigan 49201 Herbert Grossman, Esq., Chairman Atomic Safety and Licensing Board Hunton & Williams U. S. Nuclear Regulatory Comission George C. Freeman, Jr., Esquire Washington, D. C.
20555 P. O. Box 1535 Richmond, Virginia 23212
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Dr. Oscar H. Paris Atomic Safety and Licensing Board Peter W. Steketee, Esquire U. S. Nuclear Regulatory Comission 505 Peoples Building Washington, D. C.
20555 Grand Rapids, Michigan 49503 Mr. Frederick J. Shon Sheldon, Harmon, Roisman and Weiss Atomic Safety and Licensing Board 1725 I Street, N. W.
U. S. Nuclear Regulatory Comission Suite 506 Washington, D. C.
20555 Washington, D. C.
20006 Big Rock Point Nuclear Power Plant Mr. John O'Neill, II ATTN:
Mr. C. J. Ha rtman Route 2, Box 44 Plant Superintmoent Maple City, Michigan 49564 Charlevoix, Michigan 49720 Charlevoix Public Library Chri sta-Mari a 107 Clinton Street Route 2, Box 10BC Charlevoix, Michigan 49720 Charlevoix, Michigan 49720 Chai rman Mr. David P. Hoffman County Board of Supervisors Nuclear Licensing Administrator Charlevoix County Consumers Power Co cany Charlevoix, Michigan 49720 212 West Michigan Avenue Jackson, Michigan 49201 Office of the Governor (2)
Room 1 - Capitol Builcing Lansing, Michigan 48913 Director, Technical Assessment Division Office of Radiation Programs (AW-459)
U. S. Environmental Protection Agency Crystal Mall #2 Arlington, Virginia 20460
ATTACHMENT 1 ATTENDANCE LIST MEETING WITH CONSUMERS POWER COMPANY DECEMBER 7, 1979 CONSUMERS POWER R. W. Huston W. J. Beckius B. Marusich NUTECH P. Riccardella N. W. Edwards R. F. Petrokas T. Martin NRC - STAFF J. Wetmore K. N. Jabbour P. A. DiBenedetto R. J. Kiessel F. B. Litton D. Crutchfield R. Silver P. O'Connor W. Hazelton h
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