ML19273B819
| ML19273B819 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 05/16/1979 |
| From: | Seidle W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Weigand D GULF STATES UTILITIES CO. |
| References | |
| NUDOCS 7906180174 | |
| Download: ML19273B819 (1) | |
Text
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o, UNITED STATES
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NUCLEAR REGULATORY COMMISSION 3
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,E REGION IV o %rJ[
G11 FtYAN PLAZA DRIVE, SUITE 1000 g;
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Art LINGToN, TE XAS 76012
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r May 16, 1979 Docket No. 50-458 50-459 Gulf States Utilities ATTN: Dr. D. G. Weigand, General Manager Nuclear Projects Post Office Box 2951 Beaumont, Texas 77704 Gentlemen:
Enclosed is supplement AN to Preliminary Notification PNO-79-67, "Nucicar Incident at Three Mile Island," dated May 14, 1979.
Should you have any questions regarding this review, please contact this office.
Sincerely,
/
p. C. Seidle, Chief T
Reactor Construction and Engineering Support Branch
Enclosure:
PNO-79-67AN 7906180/7f
m
.IMMEDIATE PRELIMINARY NOTIFICATION May U.,
19i9 r
,f-PP.ELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCC0"ItD!CE== p!!O-79-67.*J! (Cartected)
This preliminary notification constitutes summary information of an event of safety or public interest significance.
Facility:
Three Mile Island.Unir. 2 Middletown, Pennsylvania (DN 50-320)
Subject:
NUCLEAR INCIDEh~f AT T101EE MILE ISL%~D
~
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 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 the liquid level inside containment is planned in the near futuro by measuring the hydtuntaLlu head uit the nump 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 r11ter train system aan 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 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 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.
h00fD')0II/FDlilSPfP LWW/UMg y {
CONTINUED IMMEDIATE PRELIMINARY NOTIFICATION 7006060178
Continued May 14, 10,9 Page 2 PNO-79-67AN (Correctcd)
Contact:
RCPaulus, IE x27246; DThompson, IE x2848,7._._
DisttJbution:
Transmitted if St 4' Chairman Hendrie Comissioner Bradford S. J. Chilk, SECY Coe:sissioner Kennedy Comissioner Ahearne C. C. Kacmerer, CA Cocmissioner Gilinsky ACRS (For Distribution)
Transmitted:
MNBB P. Bldg el30 J. C. Davis. IE L. V. Gossick, EDO H. R. Denton, NRR Region I tyttp (g
- H. L. Ornstein, EDO R. C. DeYoung, NRR Region II _'t'.t6 J. J. Fouchard, PA R. J. Mattson, NRR Region III 'j'.fRegion IV _4 o 7,
N. M. Haller, MPA V. Stello, NRR R. C. Ryan, OSP R. S. Boyd, NRR Region V R.
K'. Shapar, ELD SS Bldg 4:Zd (MAIL)
W. J "'.. ks, 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)
It1MED1NFE PRELIMINARY NOTIFICATION 9
O
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