ML19263E566
| ML19263E566 | |
| Person / Time | |
|---|---|
| Site: | Zimmer |
| Issue date: | 05/29/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Borgmann E CINCINNATI GAS & ELECTRIC CO. |
| References | |
| NUDOCS 7906200099 | |
| Download: ML19263E566 (1) | |
Text
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GLEN E LLYN. ILUNOIS 60137 MAY 2 91979 Docket No. 50-358 Cincinnati Gas and Electric Company ATTN:
Mr. Earl A. Borgmann Vice President Engineering Services a.1d Electric Production 139 East 4th Street Cincinnati, OH 45201 Gentlemen:
This Information Notice is provided as an early notification of a possibly significant matter.
It is expected that recipients will review the information for possible applicability to their facilities.
'.4o specific action or response is requested at this time.
If further NRC evaluations so indicate, an IE Circular or Bulletin will be issued to recommend or request specific licensee actions.
If you have questions regarding this matter, please contact the Director of this office.
Sincerely, W.Ah FJames G. Keppler Director
Enclosure:
IE Information Notice No. 79-13 cc w/ enc 1:
Mr. J. R. Schott, Plant Harold W. Kohn, Power Superintendent Siting Commission Central Files Citizens Against a Radioactive Director, NRR/DPM Environment Director, NRR/ DOR Helen W. Evans, State of PDR Ohio Local PDR NSIC TIC 2288 264 7906200099
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U.S." NUCLEAR REGULATORY COMMISSION
[* ' '-N-0FFICE OF INSPECTION AND ENFORCEMENT REGION III May 29, 1979 IE Information Notice No. 79-13 INDICATION OF LOW WATER LEVEL IN THE OYSTER CREEK REACTOR Su=a rv A loss of feedvater transient at the Oyster Creek facility on May 2, 1979, resulted in a significant reduction in water inventory within the resctor core shroud area as measured by one set of water level instruments (triple low level), while the remaining level instruments, sensing from the reactor annulus area indicated water levels above any protective feature setpoint (Figure 1).
The water level within the core shtaud area was reduced below the " triple low level" setpoint of 4-feet, 8-inches above the top of the fuel.
Subsequent analysis by the licensee has determined that the min' rum collapsed water level (solid, without steam voids) over the top of the fuel was 1 to 1-1/2 feet.
Coolant sa=ple analyses and offgas release rates do not indicate any fuel damage occurred.
General Oyster Creek is a non-jet pu=p BWR with licensed power of 1930 MWt. The plant was first made critical May 3, 1969.
Status Before Transient Operating at near full power with the main parameters at levels as follows:
1895 MWt power level 79" Yarway (13'4" over top of fuel) reactor water level 1020 psig reactor pressure 7.1x106 f/hr feedflow gpm recirculation flow rate (4 pumps) 2288 265 14.8x104 12 psid core op Ecuipment Out of Service (00S1 "D" recire pump 00S due to sea DUPLICATE DOCUMENT "B" startup transformer OOS fo Entire document previously entered into system under:
bh ANO No. of pages:
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