ML19246A512
| ML19246A512 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 06/19/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| References | |
| NUDOCS 7907030235 | |
| Download: ML19246A512 (1) | |
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UNITED STATES 7,Lg7
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1990 N. CAllFORNI A IlOULEVARD sv SUITE 202, WALNUT CRE E K PLAZA 4e,,e WALNUT CREE K. CALIFORNIA 01596 June 19, 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 with our letter dated April 1,1979 trans..iitting Bulletin 79-05, we are enclosing Preliminary tiotification 79-67AT.
Sincerely, h S.sc, c CI-R. H. Engelken Director
Enclosure:
Pt40-79-67AT cc w/ enclosure:
B. Withers, PGE F. Gaidos, PGE 274 049 790793993
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l-l Itt'tEDIATE PRELIMINARY NOTIFICATION June 18, 1979 i
PRELIMINARY NOTIFICATION OF AN EVENT OR UNUSUAL OCCURRENCE -- PNO-79-67AT This preliminary notification provides updat_ed information of sa fety or public interest s i gni f i c_a_n ce.
Facility: Three Mile Island Unit 2 N
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Middletown, Pennsylvania (DN-50-320)
Subject:
NUCLEAR INCIDENT AT THREE MILE ISL\\ND e
I Operational:
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1.
The average coolant temperature is 155 degrees F and the highest incore thermocouple temperature reading is 273 degrees F.
Core cooling is being raaintained by natural circulation.
Pressure is about 350 psi with the pressurizer in solid operation.
Steam is being admitted to the main con-denser through the turbine bypass valve frora the A Steam Generator.
2.
Reactor building water level is being measured daily, and is now 7.0 1 0.5 feet above floor level.
This lower than previously reported level is due to refinement of the measurement technique, and does not reflect an acutal level decrease.
3.
Preoperational testing for the Spent Fuel Pool Tank Farm, once-Through Steam Generator "B" Long-Term Cooling System, the modified:radwaste treatment systera (EPICOR), and the pressure / volume control system pro-gressed slowly during the past week due to various operational / procurement problems encountered. The testing may be completed within the next two weeks.
Environmental Status:
Environmental radiation levels remain consistent with natural background levels. Airborne releases have been below Technical Specification limits.
From June 11-17, 42 air samples, 2 milk samples, 4 vegetation samples and 2 soil samples were collected by the NRC. All analytical results were less than MDA. EPA air, water and milk samples collected during the week (up to June 15) showed no detectable activity from THI.
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