ML20211G436
| ML20211G436 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee, 05000000 |
| Issue date: | 02/14/1987 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20210Q453 | List: |
| References | |
| GL-83-28, NUDOCS 8702250386 | |
| Download: ML20211G436 (1) | |
Text
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION MAINE YANKEE ATOMIC POWER COMPANY MAINE YANKEE ATOMIC POWER STATION DOCKET NO. 50-309 GENERIC LETTER 83-28, ITEM 4.5.2 REACTOR TRIP SYSTEM RELIABILITY, ON-LINE TESTING INTRODUCTION AND
SUMMARY
Generic Letter 83-28 was issued by NRC on July 8, 1983, indicating actions to be taken by applicants and licensees based on the generic implications of the Salem ATWS events.
Item 4.5 states a staff position which requires on-line functional testing of the reactor trip system, including independent testing of the diverse trip features of the reactor trip breakers, for all plants.
Item 4.5.2 requires applicants and licensees with plants not currently designed to permit this perioaic on-line testing to justify not making modifications to permit such testing. By letter dated November 10, 1983, the licensee, Maine Yankee Atomic Power Company, responded to the staff position regarding Item 4.5.2 of Generic Letter 83-28.
The staff, with the assistance of the contractor, EG&G Idaho, Inc., reviewed this response and finds it to be acceptable.
EVALUATION The licensee states that Maine Yankee performs on-line testing of the reactor trip system and is pursuing modifications that will permit on-line independent testing of the undervoltage and shunt trip attachments.
CONCLUSION t
The staff finds that the Maine Yankee Atomic Power Station is designed to permit on-line functional testing of the reactor trip system and that the licensee is pursuing modifications that will permit on-line independent testing of the diverse trip features of the reactor trip breakers.
- Thus, the licensee meets the staff position of Item 4.5.2 of Generic Letter 83-28.
The licensee should confirm that the modifications have been completed.
Attachment:
TER (EG&G-NTA-7463)
Date:
February 14, 1987 Principal Contributor:
A. Toalston Ng22SD00
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