ML20039B309

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Interim Deficiency Rept Re Helba Restraint Design. Methodology for Modeling Thrust Force Time Histories Undergoing Verification.Next Rept by 820331
ML20039B309
Person / Time
Site: Midland
Issue date: 12/14/1981
From: Jackie Cook
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To: James Keppler, James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, 14634, 80-04-#5, 80-4-#5, NUDOCS 8112220511
Download: ML20039B309 (2)


Text

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Consumers Power James W Cook OhfOf Vice President - Projects, Engineering and Construction

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General Offices: 1945 West Pernell Road, Jackson, Mt 49201 + (517) 78&O453 80-Oh #5 q

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%&jM Crim;'c Mr J G Keppler, Regional Director r;

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US Nuclear Regulatory Commission C?' 7 r'{

Region III 799 Roosevelt Road Glen Ellyn, IL 60137 MIDLAND FROJECT -

DOCKET NOS 50-329 AND 50-330 HELBA RESTRAIDT DESIGN FILE:

0.h.9.41 SERIAL:

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Reference:

J W Cook letters to J G Keppler, Same

Subject:

(1) Serial 8830, dated September 19, 1980 (2) Serial 10070, dated December 1,1980 (3) Serial 11525, dated April 3, 1981 (4) Serial 13663, dated September 4,1981 This letter, as were the referenced letters, is an interim 50.55(e) report concerning HELBA restraint design. Since the last report, Bechtel has been continuing to develop a more realistic methodology for modeling thrust force time histories than used in the initial analysis. This new method is still undergoing verification by the Bechuel technical staff and no results are available at this time.

Another report, either interin or final, will be sent on or before March 31, 1982.

JLW/lr CC: Director of Office of Inspection & Enforcement Att Mr Victor Stello, USNRC (15)

Director, Office of Management Information & Program Control, USNRC (1)

RJCook, USNRC Resident Inspector Midland Nuclear Plant (1) ggg l 7 1987 8112220511 811214'~

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80-Oh #5 CC: CBechhoefer, ASLB FPCowan, ASLB RSDecker, ASLB JHarbour, ASLB AS&L Appeal Panel IOCherry, Esq MSinclair BSt amiris CRStephens, USHRC

~4DPaton, Esq, USXRC FJKelly, Esq, Attorney General SHFreeman, Esq, Asst Attorney General WE'arshall GJMerritt, Esq, TNKLJ 1

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