ML19249F312
| ML19249F312 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 09/14/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| References | |
| TAC-12279, NUDOCS 7910110301 | |
| Download: ML19249F312 (1) | |
Text
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION
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[8 1990 N. CALIFORfJI A COULEVARD o
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Wall 4U T CRE E K, CALIF ORMI A 0%0G September 14, 1979 Docket itc. 50-344 Portland General Electric Company 121 S. W. Salmon Streat
. Portland, Oregon 97204 Attention:
I.1r. Charles Goodwin Assistant Vice President Gentlemen:
The enclosed Information l'otice fio. 79-22 provides information with regard to a potential unreviewed safety question involving high energy lines and control systems.
Sincerely,
/[. cT 3~, e c L~
R. H. Engelken
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Director x
Enclosures:
1.
List of IE Information tiotices Issued in Last Six f4onths cc w/ enclosures:
C. P. Yundt, PGE G. C. Gaidos, PGE 1076 074 791011030i
Accession f!o: 790822013E SSIflS:
6870 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF If!SPECTION AND ENFORCENEtlT WASHI!iGTON, D.C.
20555 September 14, 1979 IE Infornation Notice No. 79-22 OVALIFICATION OF C0flTROL SYSTEtiS 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 environnental qualifications of equipment that they supply for nuclear steam supply systems.
Based on the present status of this effort, Westinahouse has informed their customers that the performance of non-safety grade equipnent subjected to an adverse environnent could impact the protective functions performed by safety grade equipment. These non-safety grade systems include:
Steam generator power operated relief valve control system pressurizer power operated relief valve control systen foain feedwater control system Automatic rod control system These systems could potentially malfunction due to a high energy line break inside or outside af containment. NRC is also concerned that the adverse environment could also give erroneous information to the plant operators.
Westinghouse 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 ouestions 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 ouestions recardinq this matter, please contact the Director of the appropriate flRC Regional Office.
No written response to this Information Notice is required.
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