ML19337B658
| ML19337B658 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 09/24/1980 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Berry G POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK |
| References | |
| NUDOCS 8010080455 | |
| Download: ML19337B658 (3) | |
Text
{{#Wiki_filter:- _ _. _ _ _ _ _ _ g(pn ny [/ UNITED STATES g f) c. ( g,,g NUCLEAR REGULATORY COMMISSION -{ j WASHINGTON, D. C. 20555 yca] SEPTEuan,4 m h-=* Docket No. 50-333 ."r. George T. Berry Fresident and Chief Operating Officer Power Authority of the State of New York 10 Columbus Circle New York New York 10019
Dear Mr. Berry:
_f our letter dated August 7,1978, we informed you of deficier tes we identified in the design of the Hatch 2 regulator system for the motor generator (M-G) sets which supply power to the reactor protection system (RPS). In general, the problem involved the possibility of tne M-G producing power which was of a quality (High/lcw outage, etc.) tnat could be outside that for which the RPS has been demonstrated to be acceptable. Specifically, the deficiencies involved: (l' Pctantial sequence of undetected single component failures which could adversely affect the operability of the RPS; and (2) Postulated component malfunctions initiated by a seismic event which could adversely affect the operability of the RPS. Cur letter reques* d that you review your RPS power supply to determine if your system was susceptible to the same adverse possibilities that the staff had identified for Hatch 2. We have completed our review of your response to our request and have determined that the power supply RPS design at your facility is such that it could experience the same adverse conditions as described above. Accordingly, we have determined that modifications should be performed to provide fully redundant Class lE protection at the interface of the non-Class IE power supplies and the RPS. We believe that the use of alarms or shift surveillance is acceptable as an interim measure but is not adequate for the long-term solution of our concerns. We have found 'that the conceptual design proposed by the General Electric Company and the installed modification on Hatch I are acceptable solutions to our concern.
I Mr. George T. Berry In view of the above, we believe that you should modify the power supply for the RPS at your facility. This modification should be implemented by the end of the next refueling outage. Should this scheduled outage occur within the next six months, the modifications should be accomplished by the end of the subsequent refueling outage. We will perform a post-implementation review of your modification and will require appropriate Technical Specifications for the system. L'e request that you provide within 60 days of your receipt of this letter: your (1) commitment to install a Class lE system, (2) schedule for completion of the modification and (3) schedule for submission of design information and proposed Technical Specifications. Sincerely, ,f-- 'w?ti&* 4'. Ippolito, Chief ALLdb ThoaaV Operating Reactors Branch #2 Division of Licensing cc: See next page s
Mr. George T. Berry ' CC* Mr. Charles M. Pratt Assistant General Counsel Power Authority of the State of New York 10 Columbus Circle New York, New York 10019 Mr. J. Phillip Bayne Senior Vice President - Nuclear Generation Power Authority of the State of New York 10 Columbus Circle New York, New York 10019 Mr. Raymond J. Pasternak Resident Manager James A. FitzPatrick Nuclear l Power Plant P. O. Box 41 Lycoming, New York 13093 Director, Technical Developmerc Programs State of New York Energy Office Agency 3uilding 2 Empire State Plaza Albany, New York 12223 George M. Wilverding Manager-Nuclear Licensing 10 Columbus Circle New York, New York 10019 State University College at Oswego Penfield Library - Documents Oswego, New York 13126 O e}}