ML19273B817
| ML19273B817 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 05/08/1979 |
| From: | Seidle W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Aswell D LOUISIANA POWER & LIGHT CO. |
| References | |
| NUDOCS 7906180161 | |
| Download: ML19273B817 (1) | |
Text
r em R8 Cog UNITE D STATES jo NUCLEAR REGULATORY COMMISSION y
o REGION IV 5.
611 RYAN PLAZA DRIVE, SUITE 1000 ARLINGTON, TEXAS 76011 o
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May 8,1979 Docket No. 50-382 Louisiana Power and Light Company ATTN: Mr. D. L. Aswell Vice President Power Production 142 Delaronde St.
New Orleans, Louisiana 70174 Gentlemen:
Enclosed is supplement AM to Preliminary Notification PNO-79-67, " Nuclear Incident at Three Mile Island," dated May 7,1979.
Should you have any questions regarding this review, please contact this office.
Sincerely, Ce W. C. S(idle, Chief Reactor C$6struction and Engineering Support Branch
Enclosure:
PNO-79-67AM 7906180 4/ t
IMMEDIATE PRELIMINARY NOTIFICATION May 7 1979 FRELIMINARY NOTIFICATION OF AN EVENT OR UNUSUAL OCCURRENCE - PNO-79-67AM This preliminary notification provides updated information of safety or public interest significance.
Facility:
Three Mile Island Unit 2 Middletown, Pennsylvania
Subject:
NUCI. EAR INCIDENT AT THREE MILE ISLAND Operational Status:
1.
Three of four trains of an independent, additional charcoal filter syctem are presently in operation.
Iodine concentrations in the gaseous effluent are consistently below continuous release limits and below normally detectable levels most of the time.
2.
Hydrostatic testing of the existing decay heat removal system ("B" loop) is in progress.
3.
The pressurizer has been taken " solid" to demonstrate continued decay heat removal capability with the primary coolant system completely filled and to obtain confirmatory information on pressurizer level.
4.
Measurement of the liquid level inside containment la planned in the o or future by ecoeuring the hydrunLatit h* od ou the sump discDarge piping using a recently installed Heise gage.
5.
A measurement vns made of the radioactivity inside the containment building.
It indicates that the present dose level from gases within the building is about 100 R/hr.
nehar radiation o.urceo auch..
activity deposited on the containment walls and water on the reactor building floor also contribute to the dose levels in the containment but cannot be directly estimated at this time.
Environmental Status Environmental radiation levels continue to be consistent with natural background levels.
Approximately thirteen minor releases have occurred during the past week (May 1-6) in conjunction with venting of the primary make-up tank.
J erial and ground surveys taken during these releases indicated radiation levels at background, except for the periods 2000-2100 hrs on 5/1, 1500-2000 hrs on 5/3, and 0700-0800 hrs on 5/4, when aerial measurements reported I-131 at MDA levels and ground survey readings were 0.034 to 0.04 mr/hr. During the period May 1-6, approximately 37 air samples were collected and all were less than HDA. Vegetation saeples collected following the releases were all less than MDA.
EPA air and water samples collected during the period April 26 to May 3 showed no evidence of fission products (0.1-0.2 picoeuries per cubic meter I-131 for air, and 130 picocuries per liter I-131 for water).
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IMMEDIATE PRELIMINARY NOTIFICATI.yj y d 12 790514025y
e s
Continued May 7, 1979 Page 2 PNO-79-67AM
Contact:
RCPaulus, IE x27246 DThompson, IE, x28437 Distribution:
Transmitted H St WrH f Chaircian Hendrie Commissioner Bradford S. J. Chilk, SECY Commissioner Kennedy Comissioner Ahearne C. C. Kammerer, CA Coccrissioner Gilinsky'.20 (For Distribution)
Transmitted: HNBB JI.
P. Bldg r7"f19 J. G. Davis, IE L. V. Gossick, EDO H. R. Denton, NRR Region I M H. L. Ornstein, EDO R. C. DeYoung, NRR Region II M*1f J. J. Fouchard, PA R. J. Mattson, NRR Region III ))'.,30 N. M. Haller, HPA V. Stello, NRR Region IV _fi:SJ_
R. G. Ryan, OSP R. 5. Boyd, NRR Region V H. K. Shapar, ELD SS Bldg (MAIL)
W. J. Dircks, NMSS J. J. Cumings, OIA S. Levine, RES R. Minogue, SD IE (TMI) Site (Provide copy to STATE)
C. Abraham, PA _
(Middictown - THI-Information Center)
White F.ouse Situation Room FDAA (Provide copies to the Administrator and the Operations Center)
EPA DOE /EOC PEMA BRP (State of PA)
DCPA HEW Handcarrv (FAA)
IMMEDIATE PRELIMINARY NOTIFICATION O
.