ML041400114

Tech Spec Page for Amendments 235 & 217 Regarding Extended Inverter Allowed Outage Time

ML041400114
Person / Time
Site:	North Anna
Issue date:	05/12/2004
From:	Office of Nuclear Reactor Regulation
To:
References
TAC MB6957, TAC MB6958
Download: ML041400114 (1)

Text

Inverters-Operating 3.8.7 3.8 ELECTRICAL POWER SYSTEMS 3.8.7 Inverters-Opirating LCO 3.8.7 The Train H and Train J inverters shall be OPERABLE.

- - - - - - - - - - - - NOTE- - - - - - - - - - - -

One inverter may be disconnected from its associated DC bus for S 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to perform an equalizing charge on its associated battery, provided:

a. The associated AC vital bus is energized from its constant voltage source transformer; and

b. All other AC vital buses are energized from their associated OPERABLE inverters.

APPLICABILITY:

MODES 1, 2, 3, and 4.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One inverter A.1 ---------

NOTE--------

inoperable.

Enter applicable Conditions and Required Actions of LCO 3.8.9, "Distribution Systems-Operating" with any vital bus de-energized.

Restore inverter to 7 days OPERABLE status.

B. Required Action and B.1 Be in MODE 3.

6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion Time not met.

AND B.2 Be in MODE 5.

36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> I

North Anna Units 1 and 2 3.8.7-1 ASERSO 235/217