ML20039F789
| ML20039F789 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 01/11/1982 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| TASK-02-02.A, TASK-02-03.B, TASK-02-03.B1, TASK-02-03.C, TASK-2-2.A, TASK-2-3.B, TASK-2-3.B1, TASK-2-3.C, TASK-RR LSO5-81-01-015, LSO5-81-1-15, NUDOCS 8201130366 | |
| Download: ML20039F789 (9) | |
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.v January 11, 1982 to Docket No. 50-155 to LS05 01-015 O
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%c Mr. David P. Hoffman C
S Nut: lear Licensing Administrator s
Consumers Power Company g
1945 W Parnall Road g
Jackson, Michigan 49201 6
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Dear Hr. Hoffman:
SUBJECT:
REQUEST FOR ADDITIONAL INFORfMTION RE: HYDROLOGY SEP TOPICS (BIG ROCK POINT)
In order to comlete our review of several SEP Topics (II-2.A, II-3.B.
II-3.B.1 and II-3.C), please provide answers to the attached questions.
These questions were raised during review of the subject hydrology topics.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
Sincerely, Dennis M. Crutchfield, Chief Operating Reactors Branch flo. 5 Division of Licensing
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Enclosure:
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Mr. David P. Hoffman cc U. S. Environmental Protection Mr. Paul A. Perry,. Secretary Agency Consu'mers Power Company Federal Activities Branch i 212 West Michigan Avenue Jackson, Michigan 49201 Region V Office. ATTN: Regional Radiation Representative 230 South Dearborn Street Judd L. Bacon, Esquire Chicago, Illinois 60604 Consumers Power Company 212 West Michigan Avenue Herbert Grossman, Esq., Chairman Jackson, Michigan 49201 Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission Joseph Gallo, Esquire Washington, D. C. 20555 Isham, Lincoln & Beale 1120 Connecticut Avenue Dr. Oscar H. Paris Room 325 Atomic Safety and Licensing Board Washington, D. C. 20036 U. S. Nuclear Regulatory Commission Washington, D..C. 20555 Peter W. Steketee, Esquire, 505 Peoples Building Grand Rapids, Michigan 49503 Mr. Frederick J. Shon Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission Alan S. Rosenthal, Esq., Chairman Washington, D.-C. 20555 Atomic Safety & Licensing Appeal Board U. S. Nuclear Regulatory Commission Big Rock Point Nuclear Power Plant Washington, D. C. 20555 ATTN: Mr. C. J. Hartman Plant Superintendent Mr. John O'Neill, II Charlevoix, Michigan 49720 Route 2, Box 44 Ma'ple City, Michigan 49664 Christa-Maria Route 2, Box 108C. Charlevoix Public Library Charlevoix, Michigan 49720 107 Cif nton Street Charlevoix, Michigan William J. Scanlon, Esquire i 2034 Pauline Boulevard Chairman Ann Arbor, Michigan 48103 County Board of Supervisors Charlevoix County Resident Inspector .Charlevoix, Michigan 49720 j Big Rock Point Plant c/o U.S. NRC Office of the Governor (2) RR #3, Box 600 Room 1 - Capitol Building ' Charlevoix, Mic,higan 49720 Lansing, Michi.gan 48913 Mr. Jim E. Mills Herbert Sennel Route 2, Box 108C Counsel for Christa Maria, et al. Charlevoix, Michigan 49720 Urban Law Institute Antioch School of Law 263316th Street, NW Washington, D. C. 20460 / [ ~/ T - - - - - + - e-y y-y,-- C -T""'*-P F"w'4V 4
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Mr. David P. Hoffman e CC Dr. John H. Buck Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Ms. JoAnn Bier 204 Clinton Street Charlevoix, Michigan 49720 Thomas S. Moore Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C. 20555 f a 5 e l 0 m +
(DRAFT) REQUEST FOR ADDITIONAL INFORMATION HYDROLOGICAL CONSIDERATIONS CONSUMERS POWER COMPANY BlG R'0CK POINT PLANT NRC DOCKETNO. 50-155 NRC TAC NO. 41360, 41349, 41338, 41327 A . Franklin Research Center A Division of The Franklin Institute The Benprnin Frankhn Parkway.Phila Pa. 19103 (215)448 1000
BACKGROUND I This Request for Additional Information (RFI) is the result of an evaluation of the information contained in NRC Docket No. 50-155 (Big Rock Point Nuclear Power Station) relating to hydrological considerations. The l four topics for which further information is sought are Systematic Evaluation Program (SEP) Topics II-3.A (Hydrologic Description), II-3.B (Flooding Potential and Protection Requirements), II-3.B.1 (Capability of Operating Plants to Cope with Design Basis Flooding Conditions), and II-3.C (Safety Related Water Supply - Ultimate Heat Sink). The information obtained from i this RFI will be used to supplement other docketed information concerning hydrologic considerations at Big Rock Point and to resolve all outstanding issues under those SEP topics. e m nklin Research Center A Dhnson of The Fransen insomme l h
Topic II-3.B Flooding Potential and Protection Requirements The purpose of this topic is to identify the design basis flood level for the plant and site, under current licensing criteria, resulting from all potential flood sources external to the plant and site. It includes the evaluation and discussion of significant differences between the levels or values used for design and construction and those derived under current licensing criteria. The evaluation includes the effects of flood and of changes in hydrostatic and hydrodynamic loads on safety-related structures, systems, and equipment. The discussion includes features of existing or proposed flood protection measures such as revetments, flood walls or doors, and emergency or administrative procedures. ITEM 1 CONCERN Ponding from precipitation, runoff from areas adjacent to the site, and high waves on Lake Michigan may present a hazard to safety-related structures. REQUEST Provide a list of structures housing equipment needed for safe shutdown. For each such structure, specify the location and elevation of the lowest non-watertight openings. ITEM 2 CONCERN Local precipitation may cause runoff flow from adjacent areas toward the plant site. Inadequacies in drainage and diversion structures or unfavorable topography may d'irect this water through the site. du ranklin Research Center A Dme.on of The Frenden insatute
i . REQUEST Provide drawings showing topography and water control _ structures such as berms or drainage ditches in the areas south and east of the immediate plant site. These drawings should include elevations, should cover the area up to the immediate plant site, and should be consistent with contiguous site drawings at the line where two drawings join or overlap, so that drainage patterns may be determined. Drawings C-3 (0740G20003), Site Plan, and C-7 (0740G20007) Plot Plan - Finish Grading and Paving, were submitted previously but do not adequately cover the area in question. ITEM 3 CONCERN Local precipitation may cause flooding on the plant site. Storm drains may become clogged with debris or be inadequate to carry the large volume of water. Parking lot, rooftop, and landscape runoff may pond in low areas, causing hydrostatic loads and leaking into safety-related structures through non-watertight openings. REQUEST Provide storm drain locations, elevations, sizes, and capacities. Provide drawings showing the present topography of the site landscaping, including elevations of parking lots, roads, walkways, and railroad tracks. ITEM 4 CONCERN Groundwater fluctuations can cause changes in loads applied to buildings and flood protection structures. The chosen design basis groundwater level should give reasonable certainty that it will not be exceeded ~at the plant site. O bd Franklin Research Center A DMeson af The Frerden insamme
Safety-related structures must be able to withstand the combined loads of design basis groundwater level and safe shutdown earthquake. REQUEST Groundwater loads were not considered in the original design of the Big Rock Point Nuclear. Power station, but safety-related structures have subsequently been analyzed for hydrostatic loading to 483.6' mean sea level (ms1). To ensure that this is a reasonably conservative value to use in place of design basis ground water level, provide all onsite groundwater measurements, referenced to the ground surface.. Specify how long groundwater levels were monitored and state whether this period included seasonal fluctuations and times of high lake levels. ITEM 5 CONCERN The Final Hazards Summary Report shows no calculations of high water levels which might be caused by a^ surge or seiche. REQUEST Provide any calculations which have been made of surge and seiche stillwater level and wave height. l t ITEM 6 ( CONCERN ( (0740G20007), Plot Plan - Finish Grading and Paving, shows a Drawing C-7 l fence on a strip of paving immediately north of the plant. Drawing C-3 I (0740G20003), Si,te Plan, shows the label "Tbe of Rock Berm" at the west.'end of that fence. ( IJ00tl er nkiin aese.rch center A Dmeson of The Fraaien insatute
~ REQUEST Are these structures part of a flood wall? If so, provide drawings and descriptiores of its construction, and specify elevation of' protection. Describe the event it was designed to protect against, including still water level and wave run-up. l 1 l I e l i nklin Research Center A DMean of The Frenieninsuue i -, - _ _.. ___.}}