ML19249A364
| ML19249A364 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/16/1979 |
| From: | Taylor J BABCOCK & WILCOX CO. |
| To: | Ross D NRC - TMI-2 UNRESOLVED SAFETY ISSUES TASK FORCE |
| References | |
| NUDOCS 7908220342 | |
| Download: ML19249A364 (2) | |
Text
1 Babcock &Wilcox go.e, cene,,on c,,,,
P.O. Box 1260, Lynchburg, Va. 24505 Telephone: (804) 384-5111 August 16. 1979 Dr. D.
F. Ross, Jr., Director Bulletins and Orders Task Force Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
Auxiliary Feedwater System (AFWS) Reliability Analyses for the B6W Plants
Dear Dr. Ross:
As part of the BSW's Owners' Group /NRC meeting of Thursday August 9, 1979, the scope and schedule for the subject analyses were presented.
The analysis presented provided a level of detail that would be useful to each B6W Owner in assessing the impact of proposed changes on overall AFWS reliability.
Although no technical problems surfaced at the meeting, the schedule (report to the NRC on February 22, 1980) did not satisfy the needs of the NRC.
A separate discussion with members of your staff clarified the simplifying assumptions used in the NRC report
(. tot yet published) en the reliability of the Westinghouse and Combustion Engineering AFWS.
Using these simplifying assumptions and modifying the program will allow the B5W Utilities to send the results to the NRC on an accelerated schedule, as follows:
1.
Discuss results of the reliability analysis of the first B5W plant (Rancho Seco) with the NRC.
August 30, 1979 2.
Issue draft report of the Rancho Seco analysis to the NRC.
September 17, 1979 3.
Issue draft reports to the NRC for the remaining B6W plants (as they are completed)
October 22, 1979 4.
Issue a final comparative report for all plants.
December 3, 1979 This schedule was discussed with members of your staff on August 9, 1979.
The following BSW Owners have agreed that c/)*'
BSW will perform this work:
(j'O 7
q 'O 847 109 i
7908z20 p L Tne Bank & Wacox Cornpany / Estabhshed 1867
BabcockaAVilcox Dr. D. F. Ross, Jr August 16, 1979 Duke Power Arkansas Power 6 Light Florida Power Toledo Edison Metropolitan Edison Sacramento Municipal Utility District We are proceeding to obtain the necessary plant specific information from the utilities.
If you have any questions please contact either Edward R.
Kane (Ext. 3740) of my staff or me.
truly yours
/
/
4't tf%y,/
J. H. TayIor Manager, Licensing JHT/fw CC:
(all utilities on subcommittee list)
R. A. Capra, NRC R.
B. Borsum, B5W-Bethesda 847 110