ML19345D885
| ML19345D885 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 12/04/1980 |
| From: | Tedesco R Office of Nuclear Reactor Regulation |
| To: | Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| NUDOCS 8012170775 | |
| Download: ML19345D885 (3) | |
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Docket File MErnst LB3 Rdg Glear
!4RR Rdg JKane DEC 4 leSO POR LPOR LHeller RTedesco ACanoucci "cchet.tcr. EC-: 9/320 Flii raglia FRinaldi CHood OELD Mr. J. W. Ccck JLee bec: flSIC-Vice President IE (3)
Censurers Pcuer Ccmpany ACRS(16) 1945 West Parnall Road Triurley Jacksnn, Michigan 49201 JKnight FSchauer
Dear Fr. Ccck:
SHanauer Vlicore
Subject:
Recuest fer Additional Informatien - tiidland PlantWKreger In centinuing cur review cf the Midland FSAR, we find that additicnal infr.raticn recarding tornado T.issile r.rctecticn and centain ent seis:nic analy:cs is needec.
The additiaral informatien necced is icentified in Encicsure 1.
'Je would appreciate your reply to Enclosure 1 at ycur earliest opportunity.
Shculd you have cuestions regarding Enclosure 1, contact cur Licensing Project Manager.
Sincerely.
Ort:rinal signed by Robert L. Tedesco Rchert L. Tedesco, Assistant Directer for Licensing Division of Licensing
Enclosure:
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N%C Ff3M 318 (9 76) NRCM 0240 DU.S. GOVERNMENT pplNTING OFFICE: 1979 289 369
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130.0 STRUCTURAL ENGINEERING BRAFCH 130.26 h:e tornado-generated missiles which you have considered in the design (3.5.1.4) of seismic Category I structures, as listed in FSAR Table 3.5-9, are not consistent with the missiles specified by Standard Review Plan 3.5.1.4.
Specifically, your design has not considered the three steel pipe missiles with diameters of three inches, six inches and twelve inches. Provide justification for this omission, or provide i
evaluations of your tornado missile barriers for th':se three steel pipes.
In addition, you should demonstrate that the vents used to reduce the differential pressure in Category I structures, and oti^er t
I necessary vents, intakes and exhausts, can resist postulated missi,'e impacts.
d 130.27 Provide the following data useo in seismic analysis of the containment (3.7,3.8) structures:
(1) Lump mass models (2) Stiffness value for each member (3) Mass at each node point (4) Spring constraints (Ko, Co. Kx, Cx, Ky Cy)
(5) Seismic inputs of the modified Taft N21E 7952 record i
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cc: Michael I. Miller, Esq.
Mr. Dun van Farowe, Chief Ronald G. Zamarin, Esq.
Division of Radiological Health Alan S. Farnell, Esq.
Department of Public Health Isham, Lincoln & Beale P.O. Box 33035 Suite 4200 Lansing, Michigan 48909 1 First National Plaza Chicago, Illinois 60603 James E. Brunner, Esq.
William J. Scanlon, Esq.
Consumers Power Company 2034 Pauline Boulevard 212 West Michigan Avenue Ann Arbor, Michigan 48103 Jackson, Michigan 49201 U. S. Nuclear Regulatory Commission Myren M. Cherry, Esq.
Resident Inspectors Office 1 IBM Plaza Route 7 Chicago, Illinois 60611 Midland, Michigan 48640 Ms. Mary Sinclair Ms. Barbara Stamiris 5711 Summerset Drive 5795 N. River Midland, Michigan 48640 Freeland, Michigan 48623 Frank J. Kelley, Esq.
Ms. Sharon K. Warren Attorney General 636 Hillcrest State of Michigan Environmental Midland, Michigan 48640 Protection Division 720 Law Building Lansing, Michigan 48913 Mr. Wendell Marshall Route 10 Midland, Michigan 48640 Mr. Steve Gadler 2120 Carter Avenue St. Paul, Minnesota 55108 e
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