ML19249F289
| ML19249F289 | |
| Person / Time | |
|---|---|
| Site: | Sterling |
| Issue date: | 09/14/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Arthur J ROCHESTER GAS & ELECTRIC CORP. |
| References | |
| NUDOCS 7910110219 | |
| Download: ML19249F289 (1) | |
Text
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,,(p* "'%,Jg UNITED STATES
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NUCLEAR REGULATORY COMMISSION
- y[Q' j'.- j REGION I
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KING OF PRUSS!A, PENNSYLVANIA 19406 Docket No. 50-485 SEPf 4 g3 Rochester Gas & Electric Corporation ATTN:
Mr. J. E. Arthur Chief Engineer 89 East Avenue Rochester, New York 14649 Gentlemen:
The enclosed Information Notice provides information with regard to a potential unreviewed safety question involving high energy lines and control systems.
Sincerely,
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Boyce H. Grier
~ Director
Enclosures:
1.
IE Information Notice No. 79-22 2.
List of IE Information Notices Issued in the Last Six Months cc w/encis:
C. R. Anderson, Manager, QA Lex K. Larson, Esquire N. A. Petrick, Executive Director, SNUPPS Gerald Charnoff, Esquire 1077 281 291on c R /'/
ENCLOSURE 1 Accession No: 7908220122 SSINS:
6870 I @N F l h d P UNITED STATES NUCLEAR REGULATOR.
lIIISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Information Notice No. 79-22 Date:
September 14, 1979 Page 1 of 1 QUALIFICAT ON OF CONTROL SYSTEMS Public Service Electric and Gas Company notified the NRC of a potential unreviewed safety question at their Salem Unit 1 facility.
This notification was based on a continuing review by Westinghouse of the environmental qualifications of equipment that they supply for nuclear steam supply systems.
Based on the present status of this effort, Westinghouse has informed their customers that the performance of non-safety grade equipment subjected to an adverse environment could impact the protective functions performed by safety grade equipment.
These non-safety grade systems include:
Steam generator power operated relief valve control system Pre:,surizer power operated relief valve control system Main feedwater control system Automatic rod control system These systems could potentially malfunction due to a high energy line break inside or outside of containment.
NRC is also concerned that the adverse environment could also give erroneous information to the plant operators.
West.inghouse states that the consequences of such an event could possibly be more limiting than results presented in Safety Analysis Reports, however, Westinghouse also states that the severity of the results can be limited by operator actions together with operating characterisitics of the safety systems.
Further, Westinghouse has recommended to their customers that they review their systems to determine whether any unreviewed safety questions exist.
This Information Notice is provided as an early notification of a possibly significant matter.
It is expected that recipients will review the information for possible applicability to their facilities.
No specific action or response is requested at this time.
If NRC evaluations so indicate, further licensee actions may be requested or required.
If you have questions regarding this matter, please contact the Director of the appropriate NRC Regional Of fice.
No written response to this Information Notice is required.
1077 Z82
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