ML19224C416
| ML19224C416 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 06/05/1979 |
| From: | Seidle W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Eric Turner HOUSTON LIGHTING & POWER CO. |
| References | |
| NUDOCS 7907020305 | |
| Download: ML19224C416 (1) | |
Text
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NUCLEAR REGULATORY COMMISSION n.g'.g~'
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REGION IV f4 Le 8
611 RYAN PLAZA DRIVE, SUITE 1000 Ds
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AR LINGTON, T E X AS 76012 June 6, 1979 Docket No. 50-498 50-499 Houston Lighting and Power Comp'.ny ATTN: Mr. E. A. Turner, Vice President Power Plant Construction and Technical Services Post Office Box 1700 Houston, Texas 77001 Gentlemen:
Er. closed is supplement AR to Preliminary Notification PNO-79-67, " Nuclear Incident at Three Mile Island," dated June 4,1979.
Should you have any questions regarding this review, please contact this office.
Sincerely,
/
hf
'M W. C. Sei' (e, Chief Reactor C truction and Engineering Support Branch
Enclosure:
PNO-79-67AR 271 139 22o2020 x 3 '
>3 3
IMMEDIATE PRELIMINARY NOTIFICATION June 4, M79 PRELIMINARY NOTIFICATION OF AN EVF.NT OR UhTSUAL OCCURRENCE -- PNO-79-67AR This pceliminary notification provides updated informat, ion of safety or public interest significance.
Fyflity: Three Mile Island Unit 2 Middletown, Pennsylvania (DN 50-320)
Subject:
NUCLEAR INCIDENT AT TEREE MILE ISLAND Operational:
1.
The average coolant temperature is 157 degrees F and being maintained around that temperature by natur.1 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 Stea:s Generator.
The highest inccre 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 morning.
3.
Prdoperational testing remaine 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 contpletion 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 THI-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 Euard at ite south gate.
The individual lef t the site access area while the guard was attempting to verify his identity.
The guard obtained the impcster's vel.icle licence number (California plate). The individual has been tentatively identined b the Pennsylvania State Police.
No further action is planned by the licensee.
Additionel followup of this matter will be conducted by the Region I office.
5.
.PNO-79-67T reported:
"The hydrogen recombiner tripped off at 0115 on April 13 (burned out beaters)... A decision had not been made whether to replace the heaters or to initta.e operation of the backup recombinar."
r It vaa later determined that tLe rece-kin'r trin was caused by a shorted
- T[~'~~lkb quick-disconnect plug.
The failure
-w 2'
returned to operation on April 15.
DUPLICATE DOCUMENT Environmental Status Entire document previot. sly entered into system under:
Environ:aental radiation levels continue hb h [))
levels. Airborne relesses have been be' ANO During the period May 29 - June 4, appr.
No. of pages:
2 CONTI'