ML19273B826
| ML19273B826 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 05/15/1979 |
| From: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Short T OMAHA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 7906180198 | |
| Download: ML19273B826 (1) | |
Text
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UNITED STATES PDR:HQ y.
NUCLEAR REGULATORY COMMISSION LPDR y
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,o 11ay 15,1979 Docket No. 50-285 Omaha PL'alic Power District ATTN:
T. E. Short,
\\ssistant General Manager 1623 Hirney Street Omaha, Nebraska 68102 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 fomarded for your information.
Sincerely, YNa G. L. Madsen, Chief Reactor Operations and Nuclear Support Branch
Enclosure:
1.
PNO-79-67AN cc w/ enclosure:
R. L. Andrews, Manager Fort Calhoun Station P. O. Box 98 Fort Calhoun, Nebraska 68102 7906180/fff
.IMMEDIATE PRELIMINARY NOTIFICATION May 14, 19/9 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE== FN0=70-67'N (Carrected)
This preliminary notification constitutes summary information of an event of safety or public interest significance.
Faci.ity:
Three Mile Island Unit 2 Middletown, Pennsylvania (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.
Pressure 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 gas-cous effluent have been below instantaneous release limits and below detectable levels most of the time.
3.
Preliminary hydrostatic testing of the existing decay heat removal
,e system ("A" and "B" loops) has been performed.
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 tbc liquid level inside containment is planned in the near futuro by measuring the hydtunL4 Lit head una the dump discharge piping using a recently installed Heise gage.
Environmental Status Environmental radiation leiels continue to be onsistent with natural back-ground levels.
There were approximately four minor releases during the past week (May 7-13, 1979) assoc?ated with venting of the primary makeup tank and work on the new riiter stain system ana monitors. During this period 14 24-heur continuous air samp'es 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 contained 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 MDA. Cow milk samples and grass samples from other locations show less than MDA levels for I-131.
Ground surveys continued to show radiation to be at background levels.
Aerial nurveillance flights have not shown any levels of I-131 above HDA.
Other Federal Agencies have not reported any positive values for samples taken during this period.
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CONTINUED l GU _ jjh'lj)U1 ljj M A M
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IMMEDIATE PRELIMINARY NOTIFICATION 7900060178
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Continued May 14, 1979 Page 2 PNO-79-67AN(Corrected)
Contact:
RCPaulus, IE x27246; DThompson, IE x28487 Distribution:
Transmitted 11 St N' Chairman Hendrie Camissioner Bradford S. J. Chilk, SECY Cornissioner Kennedy Comissioner Ahearne C. C. Kammerer, CA Co.missioner Gilinsky ACRS (For Distribution)
Transmitted:
MNBB P. Bldg 31!f 0 J. C. Davis, IE L. V. Gossick, EDO H. R. Denton, NRR Region I W b Y '
H. L. Ornstein, EDO R. C. DeYoung, NRR Region II _9'.L6 J. J. Fouchard, PA R. J. Mattson, NRR Region III Q.' E ',
N. M. Haller, MPA V. Stello, NRR Region IV _i.54 i
R. G. Ryan, OSP R. S. Boyd, NRR Region V H. K. Shapar, ELD SS Bldg #:Zd (MAIL)
W. J. Dircks, NMSS J. J. Cumingo, 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)
IMMEDIATE PRELIMINARY NOTIFICATION e