ML19273B839
| ML19273B839 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 05/21/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| References | |
| NUDOCS 7906180268 | |
| Download: ML19273B839 (1) | |
Text
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UNITED STATES D'\\
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WALNU T CREE K, CALIF OHNI A 9459G May 21, 1979 Docket flo. 50-344 Portland General Electric Company 121 S. W. Salmon Street Portland, Oregon 97204 Attention:
Mr. Charles Goodwin Assistant Vice President Gentlemen:
In accordance w:th our letter dated April 1,1979 transmitting Bulletin 79-05, we are enclosing Preliminary tiotification 79-67A0.
Sincerely, A
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R/ H nge ken o /
rhirector if
Enclosure:
Pt10-79-67A0 cc w/ enclosure:
B. Withers, PGE F. Gaidos, PGE 7906180268
h IMMEDIATE PRELIMINARY NOTIFICATION May 21, 1979 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PNO-79-67AO This preliminary notification constitutes summary infonnation of an event of safety or public interest si,gnificance The information presented is a summary of information as of_7;00 a.m. on May 21, 1979.
Facility: Three Mile Island Unit 2 Middletown, Pennsylvania (DN 50-320)
Subject:
NUCI. EAR INCIDENT AT THREE MILE ISLAND Plant Status Operational:
1.
The average coolant temperature is being maintained at 170 degrees F by natural circulation.
Pressure is about 300 psi.
Steam is being admitted to the main concenser through the turbine bypass valves from the A Steam Generator. The highest incore temperature reading is 301 degrees F.
2.
Hydrostatic testing of the existing decay heat removal system "B" loop has been performed satisfactorily. Leaks have been identified and are being corrected in the "A" loop.
3.
The pressurizer has been taken " solid" periodically to obtain confirmatory information on pressurizer level and to check primary system leak rate.
4.
The water level in the reactor building was measured and found to be 6.1' above floor level.
This is about 450,000 gallons.
5.
One of two primary system pressure indications now in use is givin 3 erratic readings. Direct reading pressure gages can be connected to the system if needed.
Environmental Status Environmental radiation levels continue to be consistent with natural background levels. Approximately six minor re12ases have occurred during the past week (May 14-20) in conjunction with changing levels in the primary make-up tank and sampling the prinary system. Aerial and ground sur'reys taken during these releases indicated no radiation levels above background, except for n release at 1300 on May 16, when an aerial measurement above the stack read 0.05 mR/hr.
No radiation was detected on the ground. During the period May 14-20, approxi-mately 36 air samples were collected and all were less than MDA.
Vegetation and milk samples collected during this period also showed no activity above MDA. EPA and FDA air, water milk and food samples collected during this past week up to May 19 nhowed no detectable activity f rom TMI.
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CONTINUED 7906060181
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Continued May 21,1979 Page 2 PNO-79-67A0 Conta ct: RCPaulus, IE x27246 DThorupson, IE x28487 Distribution:
Transmitted H St,gt: 68f Chairman Hendrie Comaissioner Bradford S. J. Chilk, SECY Coneissioner Kennedy Corranissioner Ahearne C. C. Kansoerer, CA Conniasioner Gilinsky ACRS (For Distribution)
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Transmitted: MNBB P. Bldg ig*.co J. G. Davis, IE
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L. V. Gossick, EDO H. R. Denton, NRR Region 1 fT**dy_fl.'d II. L. Ornstein, EDO R. C. DeYoung, NRR Region II f f *. sn J.7 J. J. Fouchard, PA R. J. Mattson, NRR Region III p*. 6 N. H. Haller, MPA V. Stello, NRR Region IV R. G. Ryan, OSP R. S. Boyd, NBR Region V./2/0L H. K. Shapar, ELD SS Bldg (13) 9, '
W. J. Dircks, NMSS J. J. Cunanings, 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) m IMMEDIATE PRELIMINARY NOTIFICATION
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