ML20038A687

Deficiency Rept Re Design of Sys Contained in Annulus Area of Unit 2 Containment Bldg.Reviewing Affected Areas & Making Necessary Mods

ML20038A687
Person / Time
Site:	Diablo Canyon
Issue date:	11/05/1981
From:	Crane P PACIFIC GAS & ELECTRIC CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8111160173
Download: ML20038A687 (1)

Text

I , Docke t I!o . 50-323 50.5$(e) Report P.ACIFIC G-A S AND E LE C T RI C C O M PANY

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November 5, 1981 - .J"a . . . . . .

Mr. R. H. Engelken, Director -

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Office of Inspection and Enforcunent s /y- -'f'i Fi' r,

/ y((N'! .:R Region V -

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U. S. Nuclear Regulatory Cmmission ['yJ /y'g ' - C

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1450 Maria I;tne, Suite 210 ._

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Walnut Creek, Ca. 94596 2 d{p y s h 'c,7 '

Re: Docket No. 50-323  :-

A^j Diablo Canyon Unit 2 4 NI j sy \ ~

Dear Mr. Engelken:

On Septmber 28, 1981 Ra; ion V was notified of a deficiency reportable under 10 CFR 50.55(e). The report addressed recently discovered deficiencies in the design of systms containMi in the 5tnnulus area of the Diablo Canyon Uni? 2 containment building.

The reportable conditions as identified for Unit 1 (IBt 81-002/OlX-0) may apply to Unit 2.

The potential effect of this error is that sorm design may not be in empliance with Hosgri seismic design criteria. All affected systuis are being reviewed and rmdifications, as necessary, are being made.

We will keep you infomed of air progress.

r Me truly yours,

! c v .

f cc: Mr. Frank J. Miraglia, Jr. , Cl ef, Licensing Branch No. 3

-M6'>-) y Division of Licensing /

Office of Nuclear Reactor Regulation j(0 U. S. Nuclear Regulatory Cmanission Washington, D. C. 20555 cc: Service List 8111160173 811105 PDR ADOCK 05000323 S PDR