ML20116G865

Forwards Supplemental SE Accepting Util Responses to SBO Rule,Except W/Respect to Initial Room Temp Used in Control Room heat-up Calculation

ML20116G865
Person / Time
Site:	Clinton
Issue date:	10/29/1992
From:	Gody A Office of Nuclear Reactor Regulation
To:	Spangenberg F ILLINOIS POWER CO.
Shared Package
ML20116G869	List: ML20116G865 ML20116G877
References
TAC-M68529, NUDOCS 9211120154
Download: ML20116G865 (3)

Text

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e 1,, UNITED STATES 8'

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. ( n NUCLE AR REGULATORY COMMISSION

$ f W ASHING T ON. D. C. 20556

\*****e October 29, 1992 Docket No. 50-4f' Mr. Frank A. Spangenberg Manager - Licer<ing and Safety Clinton Power Station .

P. O. Box 678 M

ail Code V920 Clinton, Illinois 61727 l 1

Dear Mr. Spangenberg:

l

SUBJECT:

CLINTON POWER STATION, UNIT NO 1 - SUPPLEMENTAL SAFETY EVALUATION FOR THE STA110N BLACK 0UT RULE, 10 CFR 50.63 (TAC NO M68529)

The NRC staff's Safety Evaluation (SE) pertaining to the Illinois Power Company's initial responses to the Station Blackout (SBO' Rule,10 CFR 50.63, was transmitted to you by letter dated May 29, 1992. In that SE, the staff found your proposed method of coping with an SB0 for tae Clinton Power Station (CPS), Unit 1, to be in conformance with the rule, contingent upon the satisfactory resolution of the staff's recommendations.

You responded to those recommendations by letter dated Jul, .992. The staff has reviewed your response and finds it to be acceptab, as discussed in the enclosed Supplemental Safety Evaluation (SSE) except with respect to the initial room temperature used in the control room heat-up calculation (Section 2.3.3).

You committed to additional evaluations (Sections 2.1, 2.3.2, and 2.6) that were to be completed by September 30, 1992, ano a design modification (Section 2.5) to be completed by May 3. 1994. Also, by telephc..e conversation on September 8, 1992, you indicated that your current battery capacity margin (Section 2.2.4) exceeds 5%, and that n u would commit to establish an emergency diesel generator (EDG) reliability program (Section 2.7) in accordance with the guidance of Regulatory Guide 1.155.

The enclosed SSE documents the NRC's final regulatory assessment of your proposed conformance to the SB0 Rule. The staff considers the 2-year clock for implementation of the SB0 Rule in accordance with 10 CFR 50.63 (c)(4) to begin upon your receipt of the enclosed SSE. Therefore, you should take the necessary action to complete compliance with the SB0 Rule as indicated in the staff's SE and S$E. The documentation of the analyses and actions required to resolve the itemized concerns should be included with the other documentation to be maintained by you in support of the SB0 Rule implementation for possible future NRC audit.

9211120154 921029 PDR. ADOCK 05000461 1 p PDR y<- ;> -m -

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Mr Frank A. Spangenberg October 29, 1992 You are requested to provide the staff with written confirmation of the implementation of the above commitments and the design modification that you nave made regarding this action. With respect to the concerns identified in the SSE and any concerns not yet addressed from the original SE, please respond in writing within 60 jays of the date of this letter. This TAC will remain npen to address those plant specific issues. If you have any questions, please contact me at (301) 504-1387.

The information requested in this letter affects fewer than 10 respondents; therefore, OMB clearance is not required under Public Law 96-511.

/*r Sincerely.

W$MYbX Anthony T. Gody, Jr., Project Manager ,

Project Directorate 111-3 Division of Reactor Projects Ill/lV/V Office of Mclear Rt ctor Regulation

Enclosures:

Supplemental Safety Evaluation '

cc w/ enclosure: Sce next page plSTRIBUTION:

E00?ket: Files NRC & Local PDRs PD33 Reading JZwolinski JHannon 0GC-Wfl PKreutzer DHagan GHill(4) WJones CGrimes ACRS(10)

GPA/PA OC/LfMB PD33 Gray EGreenman, Rill AGody,Jr. BBoger CCarpenter LA/PD33 PM/PD33 D/P Be. /n[

PKreutzer b AGody, Jr.- JHannpn C.ffchncc (D///92 to / N/92h [/M92 N /9//94 i

0FFICIAL RECORD COPY

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Mr. Frank A. Spangenberg Clinton_ Power Station Illinois Power Company Unit No. I  ;

cc:

Mr. J. S. Perry Illinois Department

• Vice President of Nuclear Safety >

Clinton Power Station Office-of Nuclear Facil Safety.

Post Office Box 678 id35 Outer Park Drive Clinton, l'.linois 61727 Springfield, Illinois 62704 Mr. J. A. Miller Nr. Donald Schopfer Manager Nuclear Station Project Manager <

Eagineering Department Sargent & Lundy Er -

ers

( Maton Fower Station 55 East-Monroe St' Post Office Box 678- Chicago. Illinoit .. s3 Clinton, Illinois 61/27 Sheldon Zabel, Esquire Schiff, Hardin & Waite 7200 Sears Tower-233 Wacker Drive Chicago, Illinois 60606 Resident Inspector U.S. Nuclear Regulatory Commission 1 RR#3, Box 229'A Clinton, Illinois 61727 Hs. K. K, Berry Licensing Services Manager General Electric Company 175 Curtner Avenue, M/C 382 San Jose, California ' 95125 Regional Administrator, Region Ill 799 Roosevelt Road, P~i' ding 4 Glen Ellyn, Illinois 40!*~

Chafrman of'DeWitt County

! c/o County Clerk's Office DeWitt unty Courthouse Clinton, Illinois 61727 Mr. Robert Neumann Office of- Public Counsel State of Illinois Center 100 W. Randolph,' Suite 11-300 Chicago, Illinois 30601 4

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