ML19273B824
| ML19273B824 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 05/16/1979 |
| From: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Cavanaugh W ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 7906180192 | |
| Download: ML19273B824 (1) | |
Text
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UNITED STATES g
NUCLEAR REGULATORY COMMISSION LPDR 3 ' ).,.
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G11 RYAN PLAZ A DRIVE, SUITE 1000 t!S!t g
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May 16, 1979 Docket No. 50-313 50-368 Arkansas Power and Light Company ATTN: Mr. William Cavanaugh III Vice President of Generation and Construction P. O. Box 551 Little Rock, Arkansas 72203 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,
$'NoW G. L. Madsen, Chief Reactor Operations and Nuclear Support Branch
Enclosure:
1.
PNO-79-67AN cc w/ enclosure:
Arkansas fluclear One ATTN:
J. P. O'Hanlon, ;4anager P. O. Box 608 Russellville, Arkansas 72801 L. Alexander, QC Supervisor (Same Address) 7906180/72
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.IMMEDIATE PRELIMINARY NOTIFICATION May 14, 19/9 PP.ELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCC0 b CE== PNO-70-67AN (Corre This preliminary notification constitutes sumaacy inforyation of an event of safety or public interest significance.
Facility:
Three Mile Island Unit 2 Middletown, Pennsylvania (DN 50-320)
Subject:
NUCLEAR INCIDENT AT THREE MILE ISLAND
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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-eous effluent flow from Unit 2.
Iodine concentrations in the gas-cons 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
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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 pressucizer level and to check primary system leak rate.
5.
Measurements of the liquid level inside containment is planned in the near future by measurins the hydtunL4 Lit head un the dump 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 (May 7-13, 1979) associated with venting of the primary makeup tank and work on the new rilter train system ana monitors, uuring this period 14 24-hour continuous air samples and 27 air grab (1 to 2 hr.) samples were collected, and all were less than HDA.
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 1-131 (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 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.
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iMMEDIATE PRELIMINARY NOTIFICATION 79060602 78
Continued May 14, 1979 Page 2 PNO-79-67AN (Corrected)
Contact:
RCPaulus, IE x27246; DThompson, IE x28481___
Distribution:
Transmitted H St 4*'00 Chairman Hendrie Commissioner Bradford S. J. Chilk, SECY Co=missioner Kennedy Commissioner Aheatne C. C. Kacmerer, CA CommissionerGilinsky7[
ACRS (For Distribution)
Transmitted:
MNBB 4J P. Bldg 9?f0 J. C. Davis IE L. 7. Gossick, EDO H. R. Denton, NRR Region I W E g '
H. L. Ornstein, EDO R. C. DeYoung, NRR Region II M '. L6 J. J. Fouchard, PA R. J. Mattson, NRR Region III 3'.'J N. M. Haller, MPA V. Stello, NRR Region IV Ef.s R. G. Ryan, OSP R. S. Boyd, NRR Region V H. K. Shapar, ELD SS Bldg 4:Zd (MAIL)
W. J. Dircks, NMSS J. J. Cummingo, OIA S. Levine, RES R. Minogue, SD IE (TMI) Site (Provide copy to STATE)
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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