ML19324B640

Responds to Generic Ltr 88-20 & Suppl.Util Conducted PRA for Plant W/Methodology Consistent w/NUREG-2300

ML19324B640
Person / Time
Site:	Catawba
Issue date:	11/01/1989
From:	Tucker H DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RTR-NUREG-2300 GL-88-20, NUDOCS 8911070242
Download: ML19324B640 (2)

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November 1, 1989 a

• U. S. Nuclear Regulatory Commission i ATIH: Document Control Desk i Washington, D.C. 20555

Subject:

Catawba Nuclear Station .

Docket Nos. 50-413 and 50-414 1 Dear Sir {

i In response to GL 88-20 and Supplement. Duke Power Company is providing herein the proposed program for completing the IPE for Catawba Nuclear [

Station. ,

In July 1984. Duke initiated'a program to conduct a full scale PRA of f Catawba Unit 1. This PRA, a Level 3 with external events, was completed in August 1987. For satisfying the IPE requirement, Duke intends to utilize this Catawba PRA.

l The Catawba PRA was planned, managed, and carried out entirely with Duke f l

personnel. The overall methodology is consistent with the PRA Procedures  :

Guide, NUREG-2300. The human interaction assessment employed the EPR1 i sponsored SHARP methodology. The in-plant consequence analysis, consisting  !

of accident progression is based on the MAAP computer ccde (MAAP 3.0B). l Finally, the CRAC2 computer code was utilized to perforti the ex plant I i consequence analysis. i

Although a copy of the Catawba PRA is currently available, a few additional t l- tasks remain to be completed for the IPE applications. These tasks and i their schedules as presently envisioned, considering the ongoing work on

! Oconee and MCGuire FRA, are as follows: l Assess impact Of Plant Modifications 4/90 p Assess Unit 2 Differences 12/90  ;

i A-45 Evaluation and USI/GS1 Screening 3/91 [

Examination of Results 7/91 r

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Submittal of IPE Package to NRC 12/91 Nearly all the information the NRC is seeking in the IPE submittal is f contained in the completed Catawba PRA document. Accordingly, our submittal ,

package will include a copy of the Catawba PRA, a " road-map" for the  ;

requested information within the PRA, a discussion of the evaluation of A-45 and other USIs/GS1s, a summary of Duke actions in response to the PRA results, and a discussion of conformance to GL 88-20.

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0911070242 891101 JP R ADOCK 0D000413 P PDC

U'. S. Nuclear Regul: tory Commicsion

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• November 1, 1989 Page 2 Since our IPE methodology is PRA methodology and since c.ir PRA documents are nearly completed, restructuring the PRA reports in the order suggented by i the IPE submittal guidance would require tidditional resources and paperwork i and is not warranted. Our submittal package contains all the information NRC is seeking.

We trust that the NRC finds the program outlined above vill satisfy the intent and spirit of the IPE Ictter.

Very truly yours.

A

11. B. Tucker RGM.1/lcs xct Mr. S. D. Ebneter Regional Administrator, RII U. S. Nuclear Regulatory Commission 101 Marietta St., NW, Suite 2900 Atla:sta, Georgia 30323 Mr. W. T. Orders NRC Resident Inspector Catawba Nuclear Station Dr. K. Jabbour Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. Dave Modeon NUMARC 1776 Eye Street, NW, Suite 300 Washington, D.C. 20006-2496

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