ML19246A505
| ML19246A505 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 06/19/1979 |
| From: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Short T OMAHA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 7907030224 | |
| Download: ML19246A505 (1) | |
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NUCLEAR REGULATORY COMMISSION o
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June 19, 1979 Docket tio. 50-285 Omaha Public Power District ATTN:
T. E. Short, Assistant General fianager 1623 Harney Street Omaha,fiebraska 68102 Gentlemen:
In accordance with Mr. Seyfrit's transmittal letter of April 9,1979, the enclosed Preliminary flotification(s) relating to the fluclear Incident at Three flile Island is forwarded for your information.
Sincerely,
$NoW G. L. Madsen, Chief Reactor Operations and fluclear Support Branch
Enclosure:
1.
Pfl0-79-67AT cc w/ enclosure:
R. L. Andrews,fianager Fort Calhoun Station P. O. Box 98 Fort Calhoun, Nebraska 68102 274 041 7907 030/2c'Zf
IMMEDIATE PRELI.1INARY NOTIFICATION June 18,1979 PRELIMINARY NOTIl'ICATION OF AN EVENT OR UNUSUAL OCCURRENCE -- PNO-79-67AT This preliminary notification provides updat_ed inforntion of safety or public interest signiticance.
Facility: Three Mile Island Unit 2 Middletown, Pennsylvania (DN-50-320)
Subject:
NUCLEAR INCIDEhT AT THREE MILE ISLAh3 Ojerational:
1.
The average coolant temperature is 155 degrees F and the highest incore therncouple temperature reading is 273 degrees F.
Core cooling is being m.nintained by natural circulation.
Pressure is about 350 psi with the prassuri::er in solid operatica.
Steam is being admitted to the. main con-denser through the turbine bypass valve from the A Steam Generator.
2.
Reactor building water level is being measured daily, and is new 7.0 1 0.5 feet above floor level.
This lower than previously reported level is due to refinement of the measurement technique, and does not reflect an acutal level decrease.
3.
Preoperational testing for the Spent Fuel Pool Tank Farm, Once-Through Steam Generator "B" Long-Term Cooling System, the modifie.1 radwaste treatment system (EPICOR), and the pressure / volume control system pro-Eressed slowly during the past week due to various operational / procurement problecis encountered. The testing may be completed within the next two weeks.
Enviro:nsatal Status:
Enviro,nental radiation levels remain consistent with natural background levels.
Airborne releases have been below Technical Specificat. ion limits.
Fro:2 Juae 11-17, 42 air samples, 2 milk samples, 4 vegetation samples and 2 soil snyles were collected bs/ the NRC.
All analytical results were less than MDA. 2PA air, water and milk samples collected during the week (up to June 15) showed no detectable activity from TMI.
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