ML19242A502

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Forwards PNO-79-67AW
ML19242A502
Person / Time
Site: Humboldt Bay, Diablo Canyon
Issue date: 07/10/1979
From: Engelken R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To: Crane P
PACIFIC GAS & ELECTRIC CO.
References
NUDOCS 7908020527
Download: ML19242A502 (1)


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  • ,,,e V/ALNU T CR EE K, Calif ORNI A d.59ti July 10,1979 Docket rios. 50-133 50-275 50-323 Pacific Gas and 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 transmitting Bulletin 79-05, we are enclosing Prelininary llotification 79-67AW.

Sincerely, gu$

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R. H. Engelken Director Enclosure PliO-79-67AW cc w/ enclosure:

W. Barr, PG&E W. Raymond, PG&E E. Weeks, PG&E, Humboldt Bay J. D. Worthington, PGSE R. Ramsay, PG&E, Diablo Canyon 400 U r. na ir nr o

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15(EDIATE PRELDfIMRY FKT;IFICMICH

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i i PRELIMINARY NOTIFICATICH OF EVENT OR UhuSUAL OCCUARENCE--Pho-79-67%y) g i ?

ym, Ai This arsliminary notification orovidas updated informtion of saf=tv or

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ll FACILITY: These Mile Island, Unit 2 1'

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SUBJECT:

UPDATED STATUS REPORT

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Aversgo coolant tuceraturn is 165 d e rees F.

The highest incore therm cocola te.~

rature indication is 270 d4graea F.

Corn flow is being provi&d[by il natural circulation.

Core cooling is being taaintained by staaning the "A" y

5taaa Gcarstar to the main condenser on th* bypass valva.

Primary pressure is about 275 psi.

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Daily Aasurwents of rnactor building water leve) still indicata 7.0 i ().5 feet above floor level.

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1 Functienal testing of the Prsssure/Volvoe Control system has beOun and i will continue throughout the mk.

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!i Environmental radiation levels remain consistant with natural background levyls, Aircorne eslaases rwnain well below Technical Specification limits.

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July 2 - July 8,1979, 23 air sagles. 2 nilk saaples, 4 veqatation sa: oles Cnd l

2 soil sarmles were collected by the tiRC.

All analytical rssults wre less tMa ifA. EPA air, watar, and :ailk swples collected during the w,*k (up to July;4)

,3 abcwed no detectable activity frca TMI.

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Cceweissioner Xanno<tr Comit,sioner Ahearr,4 C. C. Karcorse, CA

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Comaissioner Gilinsky (For Distribution) 1i Mvs Trans41ttad: PN88 Edl To P. 81eq u "o J. G. Davis, IE

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R. Denton, NRR flogien I P o v H. L. Ornstein, EDO pe,.,h R. C. DeYcung FiRR Region II fro -f J. J. Fouchard, PA R. J. Mattson, NRR Region III g v4.

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