ML19224C411
| ML19224C411 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 06/05/1979 |
| From: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Millen C PUBLIC SERVICE CO. OF COLORADO |
| References | |
| NUDOCS 7907020301 | |
| Download: ML19224C411 (1) | |
Text
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AR LINGTON, T EX AS 76012 June 5, 1979 Docket No. 50-267 Public Service Company of Colorado ATTil: Mr. C. K. Millen Senior Vice President P. O. Box 840 Denver, Colorado 80201 Gentlemen:
In accordance with Mr. Seyfrit's transmittal letter of April 9,1979, the enclosed Preliminary Notification (s) relating to the Nuclear Incident at Three Mile Island is fonvarded for your information.
Sincerely,
$NoW G. L. Madsen, Chief Reactor Operations and Nuclear Support Branch
Enclosure:
1.
PNG-79-67AR cc w/ enclosures:
D. U. Marembourg, Nuclear Production Manager Fort St. Vrain Nuclear Station P. O. Box 368 Pictteville, Coloradc, 80651 L. Brey, Quality Assurance (Same Address) 271 133 rs 7907020? C e a
IMMEDIATE PRELIMINARY NOTIFICATION June 4, 1979 PRELIMINARY NOTIFICATION OF AN EVENT OR UNUSUAL OCCURRENCE -- PNO-79-67AR This preliminary notification provides updated information of safety or public interest significance.
Facility: Three Mile Island Unit 2 Middletown, Pennsylvania (DN 50-320)
Subject:
NUCI. EAR INCIDENT AT THREE MILE ISLAFD Operational:
1.
The average coolant tecperature is 157 degrees F and being maintained around that temperature by natural circulation.
Pressure is about 340 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 286*F.
2.
Water level in the reactor building is being measured daily, and was 7.0 feet above floor level this.aorning.
3.
Preoperational testing remains in progress for the Spent Fuel Pool Tank Farm, Once-Through Steam Generatar "B" Long-Term Cooling System, and the codified rad waste treatment system (EPICOR).
The testing is scheduled for completion by June 8.
The pressure / volume control system is due to be turned over for preoperational testing in a few days.
4.
An individual posing as an employee of a legitimate contractor at TMI-2 attempted to gain access to the site at 10:45 p.m. on June 2, 1979. The person did not have a site photo identification badge and was refused access by the security guard at tLe south gate.
The individual Icft the site access area while the guard was at:cmpting to verify his identity.
The guard obtained the imposter's veticle license number (California plate).
The individual has been tentatively identified by the Pennsylvania State Police.
No further action is planned by the licensee. Additional followup of this matter will be conducted by the Region I office.
5.
PNO-79-67T reported:
"The bydrogen recombiner tripped off at 0115 on April 13 (burned out heaterr.)...A decision had not been made whether to replace the heaters or to initiate operation of the backup recombiner."
It was later determined that the recombinar trip was caused by a shorted quick-disconnect plu2 The 7'1 returned to operatton cn April 15.
I DUPLICATE DOCUMENT Environmental Status Entire document previously entered En'rironmental radiation levels continue into system under:
levels. Airborne relesses have been bel 66 OIM During the period hay 29 - June 4, appro ANO CONTIN No. of pages:
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