ML19208A877
| ML19208A877 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 08/09/1979 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| TASK-03-02, TASK-03-03.A, TASK-03-07.B, TASK-RR NUDOCS 7909180117 | |
| Download: ML19208A877 (4) | |
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August 9,1979 Docket No. 50-155 Mr. David Bixel Nuclear Licensing Administrator Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201
Dear Mr. Bixel:
RE:
REQUEST FOR ADDITIONAL INFORMATION SYSTEMATIC EVALUATION PROGRAM STRUCTURAL TOPICS BIG ROCK POINT PLANT To continue our review of the Systematic Evaluation Program structural topics, we request that you provide the information described in the enclosure for. each of the identified topics.
Your response is requested within 30 days so that we can maintain our review schedule.
Sincerely, 4Cyw Dennis L. Ziemann Chief Operating Reactors Branch #2 Division of Operating Reactors
Enclosure:
Request for Additional Information cc w/ enclosure:
See next page
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Mr. David Bixel August 9, 1979 cc Mr. Paul A. Perry, Secretary Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Judd L. Bacon, Esquire Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Hunton & Williams George C. Freeman, Jr., Esquire P. O. Box 1535 Richmond, Virginia 23212 Peter W. Steketee, Esquire 505 Peoples Building Grand Rapids, Michigan 49503 Charlevoix Public Library 107 Clinton Street Charlevoix, Michigan 49720 K M C Inc.
ATTN:
Mr. Richard E. Schaffstall 1747 Pennsylvania Avenue, N. W.
Suite 1050 Washington, D. C.
20006 35Ei101
Enclosure BIG ROCK POINT REQUEST FOR ADDITIONAL INFORMATION FOR STRUCTURAL TOPICS III-2 Wind and Tornado Loads 1.
Indicate which standards or codes (including date of edition) were used in the design of each safety-related structure for wind loads.
2.
Provide the information on how the tornado loadings, which consist of the translational and tangential wind, and the depressurization forces were considered in the design of each safety-related structure.
III-3.A Effects of High Water Level on Structures The elevation of the lowest point of the containment sphere (El. 565'-6") is below the water level of Lake Michigan (between El. 576' and El. 584').
Provide the water level that was considered in the design of each of the Category I structures and discuss the design provisions required to account for uplifting due to buoyancy.
III-7.B Design Codes, Design Criteria, Load Combination, and Reactor Cavity Design Criteria 1.
With regard to the design of the steel containment and the internal structures, provide the design specifications and appropriate design reports. This information should include the information requested in items two through six below.
2.
List the codes and standards (including edition date) used for design and contruction of all safety-related structures, including the allowable stresses used in design.
3.
List all loads and load combinations considered in the design of each safety-related structure, including any missile or pipe break effects.
4.
Provide the pertinent material properties of the steel and concrete used in the design of all safety-related structures (i.e., fy, fc, etc.).
S.
Provide a sunmary of stresses or strains at critical locations in all safety-related structures for each load and load combination considered in the design.
6.
Provide the buckling criteria used in the design of the steel containment shell.
O.5r[S.1.00
Enclosure III-7.D Containment Structural Integrity Tests.
Provide any reports that describe the procedures and results of the primary containment structural integrity tests.
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