ML19273B835

Forwards PNO-79-67AO

ML19273B835
Person / Time
Site:	Waterford
Issue date:	05/22/1979
From:	Seidle W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:	Aswell D LOUISIANA POWER & LIGHT CO.
References
NUDOCS 7906180247
Download: ML19273B835 (1)

Text

/*anasc%'g UNITED STATES

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g NUCLEAR RIGULATORY COMMISSION G(

.y REGION IV 0, "

G11 RYAN PLAZA DRIVE, SUITE 1000 il ' ?j U, *****,o S

ARLINGTON, TEXAS 76012 May 22, 1979

, Docket No. 50-382 Louisiana Power and ight Company ATTN: Mr. D. L. Aswell Vice President Power Production 142 Delaronde St.

New Orleans, Louisiana 70174 Gentlemen:

Fnclosed is supplement A0 to Preliminary Notification PN0-79-67, " Nuclear Incident at Three Mile Island," dated May 21, 1979.

Should you have any questions regarding this review, please contact this office.

Sincerely, f

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c W. CT$eid1 Chief g

Reactor Co ruction and Engineering Support Branch

Enclosure:

PN0-79-67A0 7906180247

Y IMMEDIATE PRELIMINARY NOTIFICATION May 21, 1979 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PNO-79-67A0 Th". preliminary ne t' Elcation constitutes summary information of an event of safety or public interest significance.

Thy,1,nformation presented is a supmary of information as of 7:00 a.m. on May 21, 1979.

Facility: Three Mile ' Island Unit 2 Middletown, Pennsylvania (DN 50-320)

Subject:

NUCLEAR INCIDENT AT T101EE MILE ISLAND

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Plant Status

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,0perational:

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1.

The average coolant temperature is being maintained at 170 degrees F by

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natural circulation.

Pressure is about 300 psi.

steam is being admitted to the main condenser through the turbine bypass valves from the A Steam Generator. The highest incore temperature reading is 301 degrees F.

2.

Rydrostatic testing of the existing decay heat removal system "B" loop has been performed satisf actorily.

Leaks have been identified and are

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being corrected in the "A" loop.

3 3.

The pressurizer has been taken " solid" periodically to obtain confirmatory information on pressurizer level and to check primary system leak rate.

4.

The water level in th'e reactor building was measured and found to be 6.I' above flaor level.

This is about 450,000 gallons.

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5.

One of two primary system pressure indications now in use is giving

.r erratic readings.

Direct reading pressure gages can be connected to the system if needed.

Environmental Status Environmental radiation levels continue to be consistent with natural background levels. Approximately six minor releases have occurred during the past week (May 14-20) in conjunction with changing levels in the primary make-up tank and sampling the primacy system.

Arrial and ground surveys taken during these releases indicated no radiation Icvels above background, except for a release at 1300 on May 16, when an aerial measurement above the stack read 0.05 mR/hr.

No radiation was detected on the ground. During the period May 14-20, approxi, mately 36 air samples were collected and all were less than MDA.

Vegetation -

and milk samples collected during this period also showed no activity above MDA. ' EPA and FDA air, water milk and food samples collected during this past week up to May 19 showed no detectable activity from TMI.

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es CONTINUED 7906060181 bJft

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Continued

.May 21, 1979 Page 2:

PNO-79-67A0

Contact:

RCPaulus, IE x27246 DThompson, IE x28487

', Distribution:

Trnnsmitted H St it:04 Chaiman Hendrie Comissioner Bradford S. J. Chilk, SECY Comissioner Kennedy Comissioner Ahearne C. C. Kan: merer, CA Cocsiissioner Gilinsky ACRS (For Distribution)

Transmitted: HNBB P. Bldg it'.co J. G. Davis, IE L. V. Cossick, EDO H. R. Denton, NRR Region I IT't4 f t.*1f

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H. L. Ornstein, EDO R. C. DeYcung, NRR Region II,Jl*.in J. J. Fouchard, PA R. J. Mattson, NRR Region III [t'. M N. M. Haller, MPA V. Stello, NRR Region IV GI/O R. G. Ryan, OSP R. S. Boyd, NRR Region V #7!dd H. K. Shapar, ELD SS Bldg (MAIL)

W. J. Dircks, NMSS J. J6 Cunnings, OIA S. Levine, RES R. Minogue, SD IE (TMI) Sit 6 (Pauvide s.upy Lu STATE)

c. m.-s

,TA vuddlatawa - Int-intormation Center)

White House Situation Rocci

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(Provide cooies to the A<iminimerarnr anr1 t-ha nna ra t-i nn a cantar)

PEHA i

BRP (St' ate of PA)

ECPA EEW

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i IMMEDIATE PRELIMINARY NOTIFICATION O

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