ML19260C138
| ML19260C138 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 12/11/1979 |
| From: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| TAC-11203, NUDOCS 7912180622 | |
| Download: ML19260C138 (1) | |
Text
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Portland General ElechicCompany
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Ov m December 11, 1979 Trojan Nuclear Plant Docket 50-344 License NPF-1 Director of Nuclear Reactor Regulation ATTN:
Mr. A. Schwencer, Chief Operating Reactors Branch #1 Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Dear Sir:
In a letter dated November 28, 1979 (T. M. Anderson, Wes*.inghouse to A. Schwencer, NRC), Westinghouse identified proposed changes in plant operating procedures to compensate for recently-identified nonconser-vative features of the rod drop analysis. These procedural changes would remain in effect until longer-term solutions have been developed as part of a topical report on this matter to be submitted to the NRC by Westinghouse in mid 1980.
This letter documents the intention of Portland General Electric Company to institute the procedural changes described in the November 28, 1979 Westinghouse letter prior to startup of Trojan from the current shut-down. The appropriate operating procedures will be modified to require that if the reactor control system is in the automatic mode, and power is greater than 90 percent of rated power, the Bank D control rods will be withdrawn greater than or equal to 215 steps. No changes will be made for operation at power levels less than 90 percent of rated or for operation with the reactor control system in the manual mode.
Sincerely,
'& r f C. Goodwin, Jr.
Assistant Vice President Thermal Plant Operation and Maintenance CG/CJP/4sa9B2 c:
Mr. Lynn Frank, Directorh State of Oregon Department of Energy /)OD/ .5 7 121 S W Sa mon Et ect Po%t 0 egon 97204}}