ML19221A696
| ML19221A696 | |
| Person / Time | |
|---|---|
| Site: | Hatch, Vogtle  |
| Issue date: | 05/29/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | John Miller GEORGIA POWER CO. |
| References | |
| NUDOCS 7907030098 | |
| Download: ML19221A696 (2) | |
Text
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,8 UNITED STATES NUCLE AR REGULATORY COMMISS!ON
,.,, g REGION 11 t
sg-.
101 MARIETT A 51., N W., SulTE 3100 T % ' b * ',o ATLANT A, oEORGI A 3o303
- 9 879 grul In Reply Reftr To:
RII:JPO 50-321, 50-366
.dLO-424, 50-425 Georgia Power Company Attn:
J. H. Miller, Jr.
Executive Vice President 270 Peachtree Street, N. W.
Atlanta, Georgia 30303 Gentlemen:
This Information Notice is provided as an early notification of a possibly significant matter. It is arpected that recipients will review the information for possible applicability to *. heir facilities. No specific action or response is requested at this time. If further NRC evaluations so indicate, an IE Circular or Bulletin will be issued to recomend or request specific licensee actions.
If you have questions regarding this matter, please centact the Director of the appropriate NRC Regional Oftice.
Sincerely,
(-
g Ja=es P. O'Reilly Director
Enclosure:
Information Notice No. 79-13 w/ Enclosures 273 113 29020300 6 &
e Georgia Power Company.
cc w/ encl:
M. Manry, Plant Manager Post Office Loy 442 Baxley, Georgia 31513 C. E. Belflower Site QA Supervisor Post Office Box 442 Baxley, Georgia 31513 L. L. Gray, Jr.
Construction Project Manager Post Office Box 329 Baxley, Georgia 31513 K. M. Gillespie Construction Project Manager Post Office Box 282 Waynesboro, Georgia 30830 E. D. Grover QA Site Supervisor Post Office Box 282 Waynesboro, Georgia 30830 9L f- ), llk
EDtITED STATIS NUCLEAR REGULATORY COMKISSION OFFICE OF INSPECTION AND ENFORCDENI MASHINGTON, D.C.
20555 Mey 29, 1979 IE Information Notice No. 79-13 INDICATI0H OF llM MATIR LEVEL IN THE OTSTER CREEK REACTOR Sussaary A loss cf feedvater transient at the Oyster Creek facility on May 2, 1979, resulted in a significant reduction in water inventory within the ramctor core shroud area as measured by one set of water level instruments (triple icv level), while the remaining level instruments, sensing from the raaetor anan1us staa indicated water levels above any protective feature setpoint (Figure 1).
The water level within the core shroud area was reduced below the " triple lov level" setpoint of 4-feet, 8-inches above the top of the fuel.
Subsequent analysis by the licensee has determined that the minimm collapsed water level (solid, without staan voids) over the top of the fuel was 1 to 1-1/2 feat.
Coolant sample analyses and offgas ralosse rates indicate un fuel damaga occurred.
Cath General c?B*"
Oyster Creek is a non-jet pump BVR with licensed power of 1930 W t.
Tb plant g,.,
was first made critical May 3, 1969.
g rarn Status Refere Transient EM Operating at naar full power with the main parameters at levels as Q(
follows:
(h 1895 We power level 79" Tarvsy (13'4" over top of fuel) reactor water level
%grJ 1020 psig reactor pressure Wu 7.1x106 f/hr feedlow gp 14.8x104 gps racirculation flow rate (4 pumps) 12 psid core p Q
!)_.
}.._ h_ _.
Equipment Out of Service (005 DUPLICATE DOCUMENT r
- D" recire pump 005 due to se Entire document previously entered
'8" startup transformer 005 i into system under:
ANO %f{pQf)]fp No. of pages:
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