ML19351D304
| ML19351D304 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 09/24/1980 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Finfrock I JERSEY CENTRAL POWER & LIGHT CO. |
| References | |
| NUDOCS 8010090496 | |
| Download: ML19351D304 (3) | |
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION y
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SEPTEMBER 2 41980 Docket No. 50-219 Mr. I. R. Fi nfrock, Jr.
Vice President - Generation Jresey Central Power & Light Conpany V,dison Avenue at Punch Bowl Road Morristown, New Jersey 07960
Dear Mr. Finfrock:
By our letter dated August 7,1978, we informed you of deficiencies 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 the M-G producing power which was of a quality (High/ low outage, etc.)
that could be outside that for which the RPS has been demonstrated to be acceptable.
Specifically, the deficiencies involved:
(1) Potential sequence of undetectec 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.
Our letter requested that you review your RPS power supply to determine if your system was susceptible to the same adverse possibilities that
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the staff had identified for Hatch 2.
We have completed our review of jour 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 lE 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 cencerns.
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.
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fir. I. R. Finfrock.i 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 l
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 ycur modification and will require appropriate Technical Specifications for the system.
i We request that you provide within 60 days of your receipt of this letter: your (1) comitment to install a Class lE system, (2) schedule for completion of the modification and (3) schedule for submission of d(sign ir. formation and proposed Technical Specifications.
Sincerely, k
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Dennis M. Cruten ield, ief-Operating Reactors Branch #5 Division of Licensing cc:
See next page t
e Mr. I. R. Fi nf rock, J r. Cc G. F. Trowbridge, Esquire -
Gene Fisher Shaw, Pittman, Potts and Trowbridge Bureau Chief 1800 M Street, N. W.
Bureau of Radiation Protection Washington, D. C.
20036 380 Scotts Road Trenton, New Jersey 08628 GPU Service Corporation ATTN:
P*. E. G. Wallace Commissioner Licensing Manager New Jersey Department of Energy 260 Cherry Hill Road 101 Commerce Street Parsippany, New Jersey "i ".
Newark, New Jersey 07102 Natural Resources Defense Council Plant Superintendent 917 15th Street, N. W.
Oyster Creek Nuclear Generating Was hingtcr., D. C.
20006 Station P. O. Box 388 Forked River, New Jersey 08731 Steven ?. Russo, Esquire 248 Washington Street Resident Inspector P. O. Box 1060 c/o U. S. NRC Toas River, New Jersey 08753 P. O. Box 128 Forked River, New Jersey 08731 Joseph W. Ferraro, Jr., Escuire Deputy Attorney General Director, Technical Assessment Div.
State of New Jersey Office of Radiation Programs Department of Law and Public Safety (AW-459) 1100 Raymond Boulevard U. S. Environmental Protection Newark, New Jersey 07012 Agency Crystal Mall #2 Ocean County Library Arlington, Virginia 20460 Brick Township Branch 401 Chambers Bridge Road U. S. Environmental Protection Brick Town, New Jersey 08723 Agency Region II Office Mayor ATTN: EIS C0ORDINATOR Lacey Township 26 Federal Plaza P. O. Box 475 New York, New York 10007 Forked River, New Jersey 08731 Commissioner Department of Public Utilities State of New Jersey 101 Commerce Street Newart, New Jersey 07102
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