ML19273B825
| ML19273B825 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 05/15/1979 |
| From: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Pilant J NEBRASKA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 7906180196 | |
| Download: ML19273B825 (1) | |
Text
bcc to DAC:ADM:
o UNITED STATES PD y
'g NUCLEAR REGULATORY COMMISSION LPDR y*
g REGION IV gyg g cj 611 RYAN PLAZA DRIVE, SulTE 1000 g
D ARLINGTON, TEX AS 76012
,o Jw,, 4 May 15, 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 fonvarded for your information.
Sincerely,
$$fo G. L. Madsen, Chief Reactor Operations and Nuclear Support Branch
Enclosure:
1.
PN0-79-67AN cc w/ enclosure:
L. C. Lessor, Superinte.' dent Cooper Nuclear Station P. O. Box 98 Brounville, Nebraska 68321 790618o,y
s
.IhMEDIATE FRELIMINARY NOTIFICATION May 14, 19/9 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCOPJtENCE== pMO-70-67AN (Carrected)
This preliminary notification constitutes summary information of an event of safety or public interest significance.
Facility:
Three Mile IslaL3 Unit 2 Middletown, Pennsyisania (DN 50-320)
Subject:
NUCLEAR INCIDENT AT THREE MILE ISLAND Operational Status 1.
The average coolant temperature is being maintained at 170 degrees F by natural circulation.
Precsure is about 650 psi.
Steam is being admitted to the main condenser through the turbine bypass valves from the A Steam Generator. The highest incore temperature read-ing is 308 degrees F.
2.
All four trains of the independent, additional charcoal filter system are presently operable.
Normally three trains are operating at any one time to provide additional filtration for the entire gas-cous effluent flow from Unit 2.
Iodine concentrations in the ges-cous effluent have been below instantaneous release liinits and below detectable levels most of the time.
3.
Preliminary hydrostatic testing cf the existing decay heat removal
./
system ("A" and "B" loops) has been perfonned. Leaks have been identified and are being corrected.
4.
The pressurizer has been taken " solid" periodically to obtain con-firmatory information on pressurizer level and to check primary system leak rate.
5.
Measurements of the liquid level inside contaianent is planned in the near f u t.u r e by measurins the hy d t un to L it. Len d una Lhe sump discharge piping using a recently installed Heise gage.
Environmental Status Environmental radiation levels continue to be consistent with natural back-ground levels. There were approximately four minor releases during the past week (Hay 7-13, 1979) associated with venting of the primary makeup tank and work on the new r11ter train system ana monitors.
During this period 14 24-hour continuous air samples and 27 air grab (1 to 2 hr.) samples were collected, and all were less than MDA. A goat milk sample taken on May 8, 1979 contnined an I-131 concentration of 12 pCi/ liter.
The latest goat milk sample collected and analyzed on May 13 showed less than MDA for I-131 (F10 pCi/1).
Grass samples taken at the goat farm showed I-131 levels less than MOA.
Cow milk samples and grass samples f rom other locations show less than MDA levels for I-131.
Ground surveys continued to show radiation to be at background levels.
Aerial surveillance flights have not shown any levels of I-131 above MDA.
Other Federal Agencies have not reported any positive values for samples taken during this period.
a n rlProno n e r
CONTINUED p
IMMEDIATE PRELIMINARY NOTIFICATION
,b 7906060178
Continued May 14, 1979 Page 2 PNO-79-67AN (Corrected)
Contact:
RCPaulus, IE x27246; DThompson, IE x28487 Distribution:
Transmitted H St
'I'~
Chairman hendrie Comissioner Bradford S. J. Chilk, SECY Commissioner Kennedy Comissioner Ahe;irne C. C. Kac: merer, CA Comissioner Gilinsky ACRS (For Distribution)
Transmitted: MNBB P. Bldg 3lfl0 J. C. Davis, IE L. V. Gossick, EDO H. R. Denton, NRR Region I W U M '
H. L. Ornstein, EDO R. C. DeYoung, NRR Region II j'.f_6 J. J. Fouchard, PA R. J. Mattson, NRR Region III J N. M. Haller, MPA V. Stello, NRR Region IV M ;J L ~,
55 R. G. Ryan, OSP R. S. Boyd, NRR Region V H. K. Shapar ELD SS Bldg #:Zd (MAIL)
W. J. Dircks, NMSS J. J. Cuminga, OIA S. Levine, RES R. Minogue, SD IE (TMI) Site (Provide copy to STATE)
C. Abraham, PA (Middletown - TMI-Information 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 Handcarry (FAA) itt EDI ATE PRELIMINARY NOTIFICATION
.