ML19268C170

Supplements RO 79-141/1T-0:on 791114,determined,upon Review of Fsar,That Previously Reported Deficiency Re Nonautomatic Restart of Casing Cooling Pumps on Restoration of Onsite Emergency Power Is Not Deficiency

ML19268C170
Person / Time
Site:	North Anna
Issue date:	11/19/1979
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
References
NUDOCS 8001030597
Download: ML19268C170 (1)

Text

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5 2N Virginia Elactric and Pcwer Corpany G .b b North Anna Pcher Station. Unit (1. NPF-4 , , ,3 N

24-Hcur Reportable Event (Icentbent) .. '!

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Written Fo11cw-Up (Supplerent)

Event: E5F Systen Returning to Non-Safety Mode Upon Reset of CDA Signal LER/R0 79-141/01T-0 .

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Written Follow Up supplarant reported on 11-14-79 included a deficiency

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with the non-auttnatic restart of tha casing cooling pteps on restoraticn of on-site a.narsency pcwer if the contaircent depressurization actuation (CLA) had previously teen reset.

Upon review of the FSAR it has been detarnined that this is not a deficienc.-

Section 7.3.1.3.5. Engineered fafety Features Actuation Devices. iten K.

descrites the operation of ESF equigant follcwing restoration of emergency pcher. The FSAR states that when e argency bus voltage has been restored for a specified tire period the actuated davices will start providing the contain-ment depressurization actuation signal is present.

The present design of the casing cooling systen is within the bounds of the FSAR.

This iten will not be included in the 14 day report.

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