ML18086A858
| ML18086A858 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 08/06/1981 |
| From: | Mittl R Public Service Enterprise Group |
| To: | Miraglia F Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8108120197 | |
| Download: ML18086A858 (2) | |
Text
0 PS~G*
Public Service Electric and Gas Company 80 Park Plaza, T16D Newark, N.J. 07101 201/430-8217 Robert L. Mittl General Manager - Licensing and Environment August 6, 1981 Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Attention:
Mr. Frank J. Miraglia, Chief Licensing Branch 3 Division of Licensing Gentlemen:
CONTROL SYSTEM FAILURES NO. 2 UNIT SALEM NUCLEAR GENERATING STATION DOCKET NO. 50-311 As requested by your April 16, 1981 letter; PSE&G has re-viewed the Salem Unit No. 2 control systems, and would like to offer the following information:
The analyses required to adequately respond to this request for information comprise review of failures which affect major NSSS control systems.
Therefore, the scope of the analyses provided to you in our response to I&E Bulletin 79-27 has to be expanded to include process line failures.
It is our intent to confirm these analysis with our NSSS supplier.
The systems currently under review are:
- 1.
Steam Dump
- 2.
Road Control
- 3.
Pressurizer Level Control
- 4.
Pressurizer Pressure Control
- 5.
Steam Generator Level Control
- 6.
Feedwater Control These systems are being evaluated for the following conditions:
- 1.
Loss of any single instrument.
- 2.
Break of any single instrument line.
- 3.
Loss of power to all components powered from a single source.
<sioai:;frfi 9"I
- 816806-, '1 1
PDR ADOCK 05000311 !
\\ p PDR I The Energy People
'11,
- 8/6/81 We currently plan to complete these analyses during the fall of 1981, at which time we will forward them to you.
How-ever, based upon available related information (response to I&E Bulletin 79-27, Attachment B), we feel confident that the analyses contained in the FSAR Chapter 14 bound the con-sequences of a single control system failure.
Should you have any questions in this regard~ do not hesi-tate to contact us.
Very truly yours~
ff? l 11 ~/
rf(f~lo.r CC:
Mr. Leif Norrholm Senior Resident Inspector HM8/l 1/2