ML19350A517
| ML19350A517 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 03/05/1981 |
| From: | Garrity J Maine Yankee |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| FMY-81-32, JHG-81-64, NUDOCS 8103160388 | |
| Download: ML19350A517 (2) | |
Text
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(207) 623-3521 JHG 81-64 Maren 5, 1981
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FMY 81-32 7-aLJ
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3 United States Nuclear Regulatory Commission TV E7 Washington, D. C.
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Attention: Division of Licensing y"
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Office of Nuclear Reactor Regulation u
Mr. Robert A. Clark, Chief Operating Reactors, Branch #3
References:
(A) License No. DPR-36 (Docket No. 50-309)
(B) MYAPC Letter to USNRC (FMY 81-5), dated January 20, 1981
Subject:
Mitigating the Effects of Grio Degradation on Safety-Relateo Electrical Equipment
Dear Sirs:
Maine Yankee met with your staff to discuss two issues whicn remained open in our letter, Reference (B), i.e., requirements for certain technical specifications and reinstatement of load sheoding under certain conditions.
This letter states our position as it now stanos.
We will perform mcdifications to reinstate the automatic load snedding feature on the emergency bus (as requireo by Staff Position 2), within tne schedule discussed in Reference (B). We will also perform periodic surveillance tests to assure operability of this feature and to verify setooints.
We note that tne Commission has questioned the appropriateness of including such surveillance committments in technical specifications vis-a-vis other alternatives whicn allow attainment of the goal of enforceability (SECY-80-214, 45FR45916).
Further, we ocserve that the staff nas frecuently acknowledged, at least informally, the regrettable evolution of tecnnical specifications.
Technical specifications began as a concise sharply focused statement of safety settings, limiting conditions for operation, and otner considerations central to 53fety. Now tne technical specifications appear to De transmuting into a caten-all which formalize to an eceally high degree botn those consicerations directly and cemenstrably linked to safety ano those whicn tne staff prefers incluced for enforcement convenience, but whicn are not as airectly related to safety.
The operability and surveillance of secono level uncervoltage protection, and automatic lcac sheoding reinstatement. fall witnin the latter category.
8103160388 1
United States Nuclear Regulatory Commission Page 2 Attention: Division of Licensing Maren 5, 1981 A cetailed surveillance procecure will de ceveloped pursuant to Maine Yankee Technical Specification 5.8.1.C for second level uncervoltage protection, and automatic reinstatement of load sheading.
This procacure will specify the setpoints along with tne basis, and provide actions to De taken if these setpoints are not within tne limits specified.
We trust you find this information satisfactory; however, if you have any questions, please do not he itate to contact us.
Very truly yours, MAINE YANKEE ATOMIC PC.NER COMPANY
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ch John H. Garrity, Director Nuclear Engineering & Licensing JHG/plb