ML19246A507
| ML19246A507 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 06/19/1979 |
| From: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Millen C PUBLIC SERVICE CO. OF COLORADO |
| References | |
| NUDOCS 7907030226 | |
| Download: ML19246A507 (1) | |
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CEflTRAL FILES f
UNITED STATES y f ; n '[,o, PDR:HQ g
NUCLEAR REGULATORY COMMISSION LPDR
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REGION IV g gj{]{y; 611 RYAN PLAZA DRIVE, SUITE 1060 o, - (5 g
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e AR LINGTON, TEXAS 7G012 June 19, 1979 Docket tio. 50-267 Public Service Company of Colorado ATTfl: fir. C. K. f4illen Senior Vice President P. O. Sox 840 Denver, Colorado 80201 Gentlemen:
In accordance with fir. Seyfrit's transmittal letter of April 9,1979, the enclosed Preliminary flotification(s) relating to the fluclear Incident at Three Mile Island is forwarded for your information.
Sincerely,
-- =
$$" yow G. L. fladsen, Chief Reactor Operations and fiuclear Support Branch
Enclosure:
1.
PfiO-79-67AT cc w/ enclosure:
D. I!. !!arembourg, flucler.r Production Manager Fort St. Vrain fluclear Station P. 0. Box 368 Platteville, Colorado 80651 L. Brey, Quality Assurance (Same Address) 274 043 7907 0302AC,
ItDiEDIATE PRELIr!INARY NOTIFICATION m,__ __ -._
__..m_
June 13, 1979 PRELIMINARY NOTIFICATION OF AN EW.NT OR UNUSUAL OCCURRENCE -- PNO-79-67AT This preliminary notification provides updated information of safety __ or public interest significance.
Facility: Three Mile Island Unit 2 Middletown, Pennsylvania (DN-50-320)
Subiect:
NUCIS.AR INCIDENT AT TIIREE MILE ISLIND Operatio_nal:
1.
Th? average coolant teeperature is 155 degrees F and the highest incore th erncouple ter perature reading ic 273 degreet F.
Core cooling is being m.sintained by natural circulation.
Pressure is about 350 psi with the prassurizer in solid operatien.
Steam is being admitted to tae :r2in con-deaser through the turbine bypass valve from the A Steam Generator.
2.
Reactor building water IcVel is being measured daily, and is new 7.0 !
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 testin2 for the Spent Fuel Paol Tank Faro, Occc-Through Stea s Generator "B" Long-Term Cooling System, the modified radwaste treatment systen (EPICDIO, and the pressure / volume control systea pro-Erassed slowly during the past week lue to varicus eperational/ procurement problems encountered. The testing ciay be completed within the next two weeks.
EcViron:seatal Status:
Env* ro, ental radiation leveln remun consistent with natural background levels.
Airborne releases have been below Technical Specificat. ion limits.
Froa Juae 11-17, 42 air ::amples, 2 milk san.ples, 4 vegetation semples and 2 soil s mples were collected by the NRC.
All analytical results were less than MDA. EPA air, wate.,nd milk samples collected during the veek (up to June 15) showed uo detectsble activity frco IMI.
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