ML19261E306
| ML19261E306 | |
| Person / Time | |
|---|---|
| Site: | Humboldt Bay, Diablo Canyon |
| Issue date: | 06/26/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Crane P PACIFIC GAS & ELECTRIC CO. |
| References | |
| NUDOCS 7907050531 | |
| Download: ML19261E306 (1) | |
Text
ARRIGo
,'c UNITED STATES y y,,..tf( g NUCLE AR REGULATORY COMMISSION g
g 5.*/Mi;{M/. c REGION V o,fi.s;j!,L5[o'"[
1990 N. CALIFORNI A BOUL EVARD SutTE 202, WALNU T CREEK PLAZ A
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WALNUi CREE K. C ALIFORNIA 94596 t
a June 26, 1979 Docket !!os. 50-133 50-275 50-323 Pacific Gas anc~ Electric Company 77 Beale Street San Francisco, California 94106 Attention-Mr. Philip A. Crane, Jr.
Assistant General Counsel Gentlemen:
In accordance with our letter dated April 1,1979 transmittino
.; ;.c+in 79-05, we are enclosing Preliminary llotification 79-67AU.
Sincerely, a..-
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R. H. Eng31 ken Director
Enclosure:
Pl10-79-67AU cc w/ enclosure:
W. Barr, PG&E W. Raymond, PG&E E. Weeks, PG&E, Humboldt Bay J. D. Worthington, PG&E R. Ramsay, PG&E, Diablo Canyon 9cl L O.c--(
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IMMEDINTE PREI.IMINARY NOTIFICATION June 26, 1979 PRELIMINARY NOTIFICATION OF AN EVENT OR UNU$UAL OCCURRENCE -- P'io-79-67AU This vreliminary notification provides updated information of safety or public interest sty,nificance.
, Facility: Three Mile Island Unit 2 Middletown, Penasylvania (DN-50-320)
Subject:
UPDATED STATUS REPORT Operational:
1.
Ave. age coolant temperature is 154 degrees F.
The highest incore thermocouple temperature indication is 267 degrees F.
Core flow is being provided by natural circulation.
Core co'> ling is being maintained by steaming the "A" Steam Generator to the recit. condenser on the b pass valve. Primary pressure is about 325 psi.
The 3 icensee plans to clculy decrease pr.: asure to about 250 pai.
2.
Daily cteasurements of reactor building water level still indicate 7.010.5 feet above floor level.
3.
The Pressure-Volume Control system is nearing cccipletion.
Coupletion and testing of sy0tems continues to progress slowly, with procurement problems and systea changes being significant contributors.
Envirocmental Status:
Environmental radiation levels re:Aain consistent with natural background levels. Airborne releases have been below Technical Specification limits.
From June 18-24, 35 air samples, 2 r.tilk samples, 4 vegetation saaples and 2 noil samples were collected by the YtC. All analytical results were less than minimum detectable activity (MDA).
EPA air, water and milk sampies collected during the w-ek (up to June 22) choved no detectable activity Irom TriI.
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