ML19273B857
| ML19273B857 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 05/30/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| References | |
| NUDOCS 7906180370 | |
| Download: ML19273B857 (1) | |
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g UNITED STATES y '* - 3.f g[,g NUCLE AR REGULATORY COMMISSION s
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1990 N. CALIFORNIA BOULEVARD 4
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WALNUT CREEK, Calif ORNIA 94596 May 30,1979 Docket tio. 50-312 Sacramento Municipal Utility District P. O. Box 15830 Sacramento, California 95813 Attention: Mr. John J. Mattimoe Assistant General Manager Gentlemen:
In accordance with our letter dated April 1,1979 transmitting Bulletin 79-05, we are enclosing Preliminary llotification 79-67AQ.
Sincerely,
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Enclosure:
Pfl0-79-67AQ cc w/ enclosure:
R. J. Rodriguez, SMUD L. G. Schwieger, SMUD y.
7906180 3'[O T
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IMMEDIATE PRELIMINARY NOTIFICATION w, -
May 29, 1979 PRELIMINARY NOTIFICATION OF AN EVENT OR UNUSUAL OCCURRENCE -- PNO-79-67AQ t
This preliminary notifi;4 tion provides updated information of safety or public interest nignificance.
Facility: Three Mile Island Unit 2 Middletown, Pennsylvania (DN 50-320) l
Subject:
NUCLEAR INCIDENT AT THREE MILE ISLiND Operational:
1.
The average coolant temperature is 158 degrees F and being maintained around that temperature by natural circulation.
Pressure is about 450 psi with the pressurizer in solid operation.
Steam is being admitted to the main condenser through the turbine bypass valve from the A Steam Generator.
The highest incore temperature reading is 291*F.
2.
Water level in the reactor builddng is being measured daily, and was 6.8 feet above floor level this morning.
The lowest decay heat system motor-f.
operated valve (DH-V2) in the reactor building was opened on May 25 as a precautionary measure, due to increasing water level.
Secondary sources of water into the reactor building have since been isolated, including the fan coolers water supply, to reduce water in-leakage.
3.
Preoperational testing is in progress for the Spent Fuel Pool Tank Farm, Once-Through Steam Generator "B" Long-Term Cooling System, and the modified rad waste treatment system (EPICOR). The testing is scheduled for completion by June 1.
Environmental Status Environmental radiation levels continue to be consistent with natural background 1cvels.
A slight change in background level on May 24 and 25 was shown to be due to changing levels of naturally occurring Rn-222 caused by a weather front moving through the area. Airbdrne releases have been below Technical Specification limits.
During the period May 21-28, approximately 35 air samples were collected by the NRC and all were less than MDA.
Vegeta-tion and milk samples collected during this period also showed no activity above MDA. EPA air, water and milk samples collected during this past week up to May 24 showed no detectable activity from TMI.
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The State of New Jersey reported that they detected no I-131 in any of the 83 milk samples they analyzed between March 29, 1979 and April 24, 1979.
These samples included milk from counties within 50 miles of Harrisburg, Pennsylvania and supplied to New Jersey consumers, the Salem, New Jersey area, and northern New Jersey farms.
CONTINUED d'.,
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Continued May 29, 1979 i,
Page 2 PNO-79-67AQ Analyses have been completed on samples of milk, water, soil, feed and grass collected at the Claire Hoover fann on May 20, 1979 (Reference PNO-79-67AP).
No reactor related radionuclides were detected by either the EPA or NRC.
Contact:
RCPaulus, IE x27246 DTh y
, IE x28487 Distribution:
Transmitted H St N Chairman Hend ie Cournissioner Bradford S. J. Chilk, SECY v
Corraissioner, nnedy Commissioner Ahearne C. C. Kammerer, CA Connaissioner Gilinsky ACRS (For Distribution)
Transmitted: HNBB $ 85 [
H.R.Le[nton,,' OO P. Bldg J. G. Davis, [IE
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L. V. Gossick, EDO NRR Region I g l 9 50
-X H. L. Ornstein, EDO R. C. TJeYoung, NRR Region II /dM'P
,86 J. J. Fouchard, PA R. J. Mattson, NRR Region III gyp N. M. Haller, MPA V. Ste Ho, NRR Region IV 5 h R. G. Ryan, OSP R. S. L*;yd,f5IJiF Region V to i f JD J~
H. K. Shapar, ELD SS Bldg #f (t1 AIL)
W. J. Dircks, NMSS J. J. Cummings, OIA S. Levine, RES R. Minogue, SD
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IE (THI) Site j/70 ' YO(ProvidecopytoSTATE)
C. Abraham, PA (Middletown - TMI-Information Center)
White House S,ituation Room R,'/7f o FDAA /13'/ ffD (Provide copies to t e Administrator and the Operations Center)
EPA J.'.90 6, DOE /EOC FRO __Myd PEnh I;w :r/yb BRP (State of'PA) ').". % (/20 DCPA '3.~1[
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