ML19263E426
| ML19263E426 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 05/09/1979 |
| From: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Pilant J NEBRASKA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 7906180145 | |
| Download: ML19263E426 (1) | |
Text
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/pn neo,'o NUCLEAR REGULATORY COMMISSION PDR:HQ REGION iv LPDR y
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May 9, 1979 Docket No. 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 Notification (s) relating to the Nuclear Incident at Three Mile Island is forwarded for your information.
Sincerely, B194W G. L. Madsen, Chief, Reactor Operations and Nuclear Support Branch
Enclosure:
1.
PN0-79-67AM cc w/ enclosure:
2355 l44 L. C. Lessor, Superintendent Cooper Nuclear Station P. O. Box 98 Brownville, Nebraska 68321 7906180/ 6
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IPC1EDIATE PRELIMINARY NOTIFICATION May 7 1979 FRELIMINARY NOTIFICATION OF AN EVENT OR UNUSUAL OCCORRENCE - PNO-79-67AM This preliminarv notification provides updated information of safety or public interest significance.
Facility: Three Mile Island linit 2 Middletown, Pennsylvania
Subject:
NUCLEAR INCIDENT AT THREE MILE ISLAND Operational Status:
1.
Three of four trains of an independent, additional charcoal filter system are presently in operation.
Iodine concentrations in the gaaeous ef fluent 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 informat. ion on pressurizer level.
4.
Measurement of the liquid level inside containment is planned in the near future by measuring the hydrvaLatis. head un Lhu StHDP disCnarge piping using a recently installed Heise gage.
5.
A measurement was 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.
Othnr radiation oourceo such..
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 Statue 2355 145 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.
Aerial 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 measurem nts 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 MDA.
Vegetation samples 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).
CONTINUED IMMEDIATE PRELIMINARY NOTIFICATION 7905349g$3
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a Continued May 7, 1979 Page 2 PNO-79-67AM
Contact:
RCPaulus, IE x272t.63 DThompson, IE, x28487 Distribution:
Transmitted H St Mr+f Chairman Hendrie Commissioner Bradford S. J. Chilk, SECY Commissioner Kennedy Commissioner Ahearne C. C. Kammerer, CA (For Distribution)
Consissioner Gilinsky'20 Transmitted: MNBB JI.
P. Bldg G IE J. G. Davis, f Region I H+2 L. V. Gossick, EDO H. R. Denton, NRR H. L. Ornstein, EDO R. C. DeYoung,'NRR Region II M 'It' __
J. J. Fouchard, PA R. J. Mattson, NRR Region III E Q N. M. Haller, MPA V. Stello, NRR Region IV t i : 3J __
R. G. Ryan, OSP R. S. Boyd, NRR Region V H. K. Shapar, ELD SS Bldg (MAIL)
W. J. Dircks, NMSS J. J. Cunnings, CIA S. Levine, RES R. Minogue, SD IE (TMI) Site (Provide copy to STATE)
C. Abraham, PA _
(Middletown - TMI-Infonnation Center)
White House 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 2355 146