ML19221A736

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Forwards PNO-79-67AS
ML19221A736
Person / Time
Site: Cooper Entergy icon.png
Issue date: 06/13/1979
From: Madsen G
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To: Pilant J
NEBRASKA PUBLIC POWER DISTRICT
References
NUDOCS 7907030177
Download: ML19221A736 (1)


Text

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611 RYAN PLAZA DRIVE, SUITE 1000 t) ggyg ARLINGTON, TEX AS 76012 June 13, 1979 Docket tio. 50-298 Nebraska Public Power District ATTN:

J. M. Pilant, Director Licensing & Quality Assurance P. O. Box 499 Columbus, Nebraska 68601 Gentlemen:

In accordance with Mr. Seyfrit's transmittal letter of April 9,1979, the enclosed Preliminary flotification(s) relating to the Nuclear Incident at Three Mile Island is fonvarded for your information.

Sincerely,

$Wlo0&

G. L. Madsen, Chief Reactor Operations and Nuclear Support Branch

Enclosure:

1.

PNO-79-67AS cc w/ enclosure:

L. C. Lessor, Superintendent Cooper Nuclear Station P. O. Box 98 Brownville, Nebraska 68321 273 229 7907osof77

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TWFDTATE PimLm1 NAM tiUTIFICATION

~

June 11, 1979 PRELIMINARY NOTIFICATION OF AN EVENT OR UNUSUAL OCCURRENCE -- PNO-79-67AS This preliminary notification provides updated informat_i_on of safety or public int.e res t significance.

Facility: Tnree Mile Island Unit 2 Hiddletown, Pennsylvania (DN-50-320)

Subject:

NUCLEAR INCIDENT AT THREE MILE ISLAND Opm tica21:

1.

The average coolant temperature is 157 degrees F.

The highest incore thermoenuple temperature reading is 280 degrees F.

Core cooling is being maintained by natural circulation.

Pressure is about 340 psi with the pressurizer in solid operation.

Steam is being admitted to the main con-denser through the turbine bypass valve from the A Steam Generator.

2.

Water level in the reactor building is being measured daily, and is 7.3 feet above floor level this morning.

3.

Preoperational testing for the Spent Fuel Pool Tank Farm, Once-Through Steam Generator "B" Long-Term Cooling System, the modified rad waste treatment system (EPICOR), and the pressure / volume control system should be completed by June 15.

Environmental Staty :

Environmental radiation Jevels remain consistant with natural background levels.

Airborne releases have been below Technical Specification limits. From June 5 -

June 10, about 37 air samples were collected by the NRC.

All were less than MDA.

Vegetation, soil and milk samples collected last week also showed no activity above MDA.

EPA air, water and milk sacples collected during the week (up to June 8) showed to detectable activity from TMI.

CONTINUED DUPLICATE DOCUMENT h ')

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ANO_ ] Q & Q ] h 0 S f No. of pages:

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