ML20084E894

Responds to Co Thomas 840413 Request for Addl Info Re Severe Accident Review.Design Mods Will Be Evaluated Per NUREG/CR-3385, Measures of Risk Importance & Applications. Draft Rept Expected by Mid Apr

ML20084E894
Person / Time
Site:	05000447
Issue date:	04/20/1984
From:	Quirk J GENERAL ELECTRIC CO.
To:	Eisenhut D Office of Nuclear Reactor Regulation
References
RTR-NUREG-CR-3385 MFN-048-84, MFN-48-84, NUDOCS 8405030043
Download: ML20084E894 (1)

Text

GENERAL $ ELECTRIC NUCLEAR POWER SYSTEM 5 DM310N GENERAL ELECTRIC COMPANY e 175 CURTNER AVENUE e SAN JOSE, CAUFORNIA 95125

' ~

April 20, 1984 U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washington, D.C. 20555 Attention: Mr. D.G. Eisenhut, Director Division of Licensing Gentlemen:

SUBJECT:

IN THE MATTER OF 238 NUCLEAR ISLAND GENERAL ELECTRIC STANDARD SAFETY ANALYSIS REPORT (GESSAR II)

DOCKET NO. STN 50-447 GE PROPOSED EVALUATION PLAN FOR CONSIDERATION OF PROPOSED DESIGN MODIFICATIONS

Reference:

C.0. Thomas (NRC) letter to G.G. Sherwood,

Subject:

Request for Additional Information Regarding the Severe Accident Review of GESSAR II, April 13, 1984 In reference 1, GE is being required to consider proposed design modifications as a condition of closing the GESSAR II Severe Accident review.

It is General Electric's intent to evaluate design modifications, including those in the referenced memorandum, and to formally submit that evaluation to the NRC. The proposed modifications will be qualitatively screened using information from the GESSAR II Probabilistic Risk Assessment, previous internal GE studies and available NRC guidance (such as NUREG/CR-3385, " Measures of Risk Importance and Their Applications,"' July 1983). It is our intent to prepare a draft: report by mid-April and to discuss the evaluations with-the Staff on May 1, 1984. Based on the outcome of that meeting, more detailed quantitative evaluations would be performed on a selected set of proposed design modifications.

-If-there are any questions on this approach, please contact me or Mr.

Kevin Holtzclaw (408) 925-2506.

'Very truly your!,

v

'J. u , Manager-BWR Systems Licensing Nuc ar Safety & Licensing Operation cci -F.J. Miraglia (NRC)

D.C. Scaletti'(NRC)

B. Hardin.(NRC)

L.S. Gifford (GE-Bethesda)'

[#81[p

.A. Thadani (NRC) , R. Villa C.(1.-Thnmas (NRC)

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