ML19224C409
| ML19224C409 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 06/05/1979 |
| From: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Short T OMAHA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 7907020298 | |
| Download: ML19224C409 (1) | |
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gf#" " %jo, CEfiTRAL FILES UNITED STATES PDR HO c
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ARLINGTON, TEXAS /6012
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June 5, 1979 Docket tio. 50-285 Omaha Public Power District ATTN:
T. E. Short, Assistant Carieral Manager 1623 Harney Street Omaha, Nebraska 68102 Gentlemen:
In accordance with M;. Seyfrit's transmittal letter of April 9,1979, the enclosed Preliminary Notification (s) relating to the Nuclear Incident at Three Mile Island is fonvarded for your information.
Sincerely,
/ $Noh,A G. L. Madsen, Chief Reactor Operations and Nuclear Support Branch
Enclosure:
1.
PNO-79-67AR cc w/ enclosures:
R. L. Andrews, Manager Fort Calhoun Station P. O. Box 98 Fort Ca'.houn, flebraska 68102 271 118 7907020 ^'S S na M
t
/ --
IMMEDIATE PRELIMINARY NOTIFICATION Jane 4, 1979 PRELIMINARY NOTIFICATION OF AN EVENT OR UhTSUAL OCCURRENCE -- PNO-79-67AR This oreliminary notification provides updated informati,on_of safety or public interest significance.
Facility: Three Mile Island Unit 2 Middletown, Pennsylvania (DN 50-320)
Subject:
NUCLEAR INCIDENT AT THREE MILE ISLAND Operational:
1.
The average coolant temperature is 157 degrees F and being maintained around that temperature by natural circulation.
Pressure is about 340 psi with the pressurizer in solid operation.
Steam is being ndmitted to the main condenser through the turbine bypass valve from the A Steam Generator.
The highest incore temperature reading is 286 F.
2.
Water level in the reactor building is being measured daily, and was 7.0 feet above floor level this morning.
3.
Preoperational testing remains in progress for the Spent Fuel Pool Tank Farm, Once-Through Steam Genera tor "B" Long-Term Cooling System, and the codified rad waste treatment system (EPICOR).
The testing is ucheduled for completion by June 8.
The pressure / volume control system is due to be turned over for preoperational testing in a few days.
An individual posing as an employee of a legit.imate contractor at TMI-2 attempted to gain access to the site at 10:45 p.m. on June 2, 1979. The person did not have a site photo identification badge and was refused access by the security guard at tLe south gate.
The individual left the site access area while the guard was attempting to verify his identity.
The guard obtained the imposter' t. velicle license nu.nber (California plate).
The individual has been tentatively identified by the Pennsylvania state Pelice.
No further action is planned by the licensee. Additional follovup of this matter will be conducted by the Region I office.
5.
"NO-79-67T reported:
"The hydragen recombiner tripped off at 0115 on April 13 (burned out heater.s)...A decision had not been made whether to replace the heaters or to initiate operation of the backup recombiner."
It was later determined that the recombiner trip was caused by a shorted quick-disconnect plug.
The failure '
returned to operation cu April 15.
DUPLIC?.cr; DOCUMENT][ }
}jj Environmental Status Entire 'ocument previously entered Environ = ental radiation levels continue t, into system under:
)
levels. Airborne releases have been belo' q Q (A /
/ (
,,)W During the period May 29 - June 4, approx ANO CONTIhv No. of pages-
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