ML19241B141
| ML19241B141 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 05/22/1979 |
| From: | Nowicki S Office of Nuclear Reactor Regulation |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7907110728 | |
| Download: ML19241B141 (3) | |
Text
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NUCLE AR REGULATORY COMMISSION WASW NGTON, D. C. 20555 g
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May 22,1979 Docket No. 50-219 MEMORANDUM FOR:
Dennis L. Ziemann, Chief, Operating Ractors Branch #2, DOR FRCM:
Stanley J. Nowicki, Project Manager, Operating Reactors Branch #2, D0R
SUBJECT:
SUMMARY
OF TRIP TO THE OYSTER CREEK NUCLEAR GENERATING STATION ON MAY 3-4, 1979 On May 3,1979, four NRR employees, Carl Berlinger and Roy Woods of Reactor Safety Branch, Ron Frahm of Reactor Systems Branch, and Stan Nowicki of Operating Reactors Branch #2, joined seven members of the Office of Inspection and Enforce-ment at the Oyster Creek Nuclear Generating Station to review the trcnsient which occurred at Oyster Creek on May 2,1979.
The loss of feedwater transient which was initiated at 1:51 PM on May 2,1979, resulted in a triple iow water level indication. The signal was received about three minutes after the reactor scram.
Upon arrival at the site, the NRR personnel were briefed by Boyce Grier (Director of I&E Region I and leader of the response team) and by Ed Greenman (first NRC representative to arrive at Oyster Creek after the transient).
Review of the pressure and temperature records, scquence of events records, off-gas charts, and interviews with the operators confirmed the earlier reported preliminary sequence of events.
The remainder of May 3 and May 4 we.
spent in making preliminary determinations regarding (1) possible uncovering of the fuel during the transient, (2) the minimun water level experienced in the reactor vessel, (3) any indications of fuel damage, (4) cause of the transient, and (5) follow up actions being taken.
The NRC team on site provided NRC headquarters with data for perfonning a preliminary calculation to determine the minimum water level of the reactor core during the transient.
The General Electric Company performed a similar analysis.
The results of General Electric Company's analysis was discussed with the NRR team.
Af ter reviewing the data, analysis, and testimony, the NPR staff's preliminary conclusions were that (1) the fuel had not been uncovered during the transient, (2) there were no apparent indications of fuel damage, and (3) enough data was o r, ~
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Dennis L. Ziemann May 22, 1979 available to ascertain why the transient progressed the way it did.
Since agreement had been reached between I&E and the licensee that the transient would be treated as a violation of a safety limit, i.e., the plant would not be restarted until the Comission reviewed the licensee's evaluation of the transient and granted approval for startup, the NRR team returned to headquarters.
Sc6
/LW Stanley J.
owicki, Project M6na;er Operating Reactors Branch #2 Division of Operating Reactors
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May 22,1979 cc G. F. Trowbridge, Esquire Shaw, Pittman, Potts and Trowbridge 1800 M Street, N. W.
Washinoton, D. C.
20036 GPU Service Corporation ATTN:
Mr. E. G. Wallace Licensing Manager 260 Cherry Hill Road Par 31ppany, New Jersey 07054 Anthony Z. Roisman Natural Resources Defense Council 917 15th Street, N. W.
Washington, D. C.
20005 Steven P. Russo, Esquire 248 Washington Street P. O. Box 1060 Toms River, New Jersey 08753 Joseph W. Ferraro, Jr.. Esquire Deputy Attorney General State of New Jersey Department of Law and Public Safety 1100 Raymond Boulevard Newark, New Jersey 07012 Ocean County Library Brick Township Branch 401 Chambers Bridge Road Brick Town, New Jersey 08723 Mr. I. R. Finfrock, Jr.
Vice President - Generation Jersey Central Power & Light Company Madison Avenue at Punch Bowl Road Morristown, New Jersey 07960 n-on ~
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