ML19220C062
| ML19220C062 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse, Oconee, Arkansas Nuclear, Crystal River, Rancho Seco, Crane  |
| Issue date: | 05/19/1978 |
| From: | Butler W Office of Nuclear Reactor Regulation |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7904280157 | |
| Download: ML19220C062 (1) | |
Text
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.MSICRNiDUtt.FORi' R. W. Reid, Chief, Operating Reactors Branch f4,
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W. R. Dutler, Chief, Plant Systess Branch
',,..,,., Division of Operating Reactors
SUBJECT:
.. '*. BABCOCK & VII.COX HOTIFICATION UNDER 10 CFR 21
' RE: REACTOR PROTECTION SYSTEM GROUNDING Plant Names: Arkansas - 1 Crystal River - 3 Davis-Eesse - 1 j
Oconee - 1/2/3 i
Rancho Seco Three Mile Island 1 & 2 i
Docket Hu:Iers: 50-313, 50-302, 50-346 50-2 G7, 50-312 j
i Babetdk1 Milcox (B5W), cy letter dated March 9.1978 submitted a-report regarding an item which B & V believes to be reportable under the provisions of 10 CFR Part 21. The report docu=ented the evaluation of a B & W concarn wherein it was postulated that a loss of ground b
could cause the Nuclear Instru=entation/ Reactor Protection System (MI/RPS) of certain B & W nuclear plants to fail to perform its intended ll function. A copy of the report is provided as Enclosure 1.
- Also, certain additional infomation submitted by B & V concerning MI/RPS 5'
grounding is provided as Enclosure 2.
l We request that the licensee of the above listed nuclear units be provided with a copyoof these enclosures and that the licansees be requested to review the grounding system with regard to the concem raised by B & W and to sutoit their evaluatica and proposed corrective acticns where required.
Further if the licensees do not have an ongoing test program to verify, on a periodic basis, the ground continuity of the MI/RPS channels, we would require them to prec:ptly for=nlate and institute such a test program I
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