ML19249F306
| ML19249F306 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 09/17/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Koester G KANSAS GAS & ELECTRIC CO. |
| References | |
| NUDOCS 7910110295 | |
| Download: ML19249F306 (1) | |
Text
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9, 611 RYAN PLAZA DRIVE, SUITE 1000 Ug'NJ AR LINGTON, TE X AS 7G012 September 17, 1979 In Reply Refer To:
RIV Docket No.
STN 50-482/IE Information Notice No. 79-22 Kansas Gas & Electric Co.
Attn:
hk. Glenn L. Koester Vice President-0perations Post Office Box 208 Wichita, Kansas 67201 Gentlemen:
The enclosed IE Information Notice provides information with regard to a potential unreviewed safety question involving high energy lines and control systems.
Sincerely, 7
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^Z Karl V. Seyfri Director
Enclosures:
- 2. List of IE Information Notices Issued in the Last Six Months cc: w/ enclosures Messrs. Nicholas A. Petrick, SNUPPS D. T. McPhee, Kansas City Power and Light Company Gerald Charnoff, Shaw, Pittman, Potts & Trowbridge E. W. Creel, Kansas Gas and Electric Company 97$
062 79101102,9[
UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ERFORCEMENT WASHINGTON, D.C.
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IE Information Notice No. 79-22 Date:
September 14, 1979 Page 1 of 1 QUALIFICATION OF CONTROL SYSTEMS Public Service Electric and Gas Company notified the NRC of a potential unreviewed safety question at their Salem Unit I facility, fhis notification was based ou 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 perfonnance of non-safety grade equipment subjected to an adverse envircnment 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 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.
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 rcsults can be limited by operator actions together with operating characteristics 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 IE Information Notice is provided as an early notification of a possibly significant matter.
It is expected that recipiente vill review the information for oossible 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 Office.
No written response to this Information Notice is required.
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