ML19246A525
| ML19246A525 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 05/31/1979 |
| From: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Pilant J NEBRASKA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 7907030252 | |
| Download: ML19246A525 (1) | |
Text
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.c May 31, 1979 Docket flo. 50-298 Nebraska Public Power District ATTN:
J. M. Pilant, Director Licensing & Quality Assurance P. O. Box 499 Columbus, Nebraska 68601 Gentleman:
In accordance with Mr. Seyfrit's transmittal letter of April 9,1979, the enclosed Preliminary Notification (s) relating to the Nuclear Incident at Three Mile Island is forwarded for your information.
Sincerely, YNa8M G. L. Madsen, Chief Reactor Operations and Nuclear Support Branch
Enclosure:
1.
PNO-79-67AQ cc w/ enclosures:
L. C. Lessor, Superintendent Cooper Nuclear Station P. O. Box 98 Brownville, Nebraska 68321 275 114 7907 030Rf2
' ' ' ~
IMMEDIATE PRELIMINARY NOTIFICATION May 29, 1979 PRELIMINARY NOTIFICATION OF AN EVENT OR UNUSUAL OCCURRENCE -- PNO-79-67AQ This preliminary notificatinn nrnvides un stad information of oarety or public a
in_tcreat oignificance.
Facility: Three Mile Island Unit 2 Middletown, Pennsylvania (DN 50-320)
Subject:
NUCLEAR INCIDENT AT TlIREE MILE ISLAND Operational:
1.
The average coolant temperature is 158 degrees F and being maintained around that temperature by natural circulation.
Pressure is about 450 psi with the pressurizer in solid operation.
Steam is being admitted to the main condenser through the turbine bypass valve from the A Steam Generator.
The highest incore temperature reading is 291 F.
2.
Water level in the reactor building is being measured daily, and was 6.8 feet above floor level this corning.
The lowest decay heat system motor-operated valve (DH-V2) in the reactor building was opened on May 25 as a precautionary ceasure, due tc increasing water level.
Secondary sources of water into the reactor building have since been isolated, including the fan coolers water supply, to reduce water in-leakage.
3.
Preoperational testing is in progress for the Spent Fuel Pool Tank Farm, Once-Through Steam Generator "B" Long-Term Cooling System, and the codified rad waste treatment system (EPICOR).
The testing is scheduled for completion by June 1.
Envirecmental Status Environmental radiation levels continue to te consistent with natural background levels.
A slight change in backg round level on May 24 nd 25 was shown to be due to changing levels of naturally occurring Ro-222 caused by a weather front coving through the area.
Airborne releases have been below Technical Specification limits.
During the period May 21-28, approximately 35 air samples were collected by the NRC and all were less than MDA. Vegeta-tion and milk samples collected during this period also showed no activity above MDA.
EPA air, water and milk samples collected during this past week up to May 24 showed no detectable activity from TMI.
The State of New Jersey re 1
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F oilk samples they analyzed between Ma l}D samples included milk from counti"3 h Entire doctunent and supplied to New Jersey consumers, into system unde New Jersey farms.
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