ML033250556

Units 1 and 2, Technical Specifications, Re Completion Time from 24 Hours to 7 Days for One Inoperable Instrument Bus Inverter

ML033250556
Person / Time
Site:	Byron, Braidwood
Issue date:	11/19/2003
From:	NRC/NRR/DLPM
To:
Shared Package
ML033290044	List: ML032830455 ML033250556
References
TAC MB6569, TAC MB6570, TAC MB6571, TAC MB6572
Download: ML033250556 (2)

Text

Inverters-Operating 3.8.7 3.8 ELECTRICAL POWER SYSTEMS 3.8.7 Inverters-Operating LCO 3.8.7 APPLICABILITY:

Four instrument bus inverters shall be OPERABLE.

MODES 1, 2, 3, and 4.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One instrument bus A.1

---

NOTE---------

inverter inoperable.

Enter applicable Conditions and Required Actions of LCO 3.8.9, "Distribution Systems-Operating" with any instrument 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

BYRON -

UNITS I & 2 3.8.7 - 1 Amendment 135

Inverters-Operating 3.8.7 3.8 ELECTRICAL POWER SYSTEMS 3.8.7 Inverters-Operating LCO 3.8.7 APPLICABILITY:

Four instrument bus inverters shall be OPERABLE.

MODES 1, 2, 3, and 4.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One instrument bus A.1

---

NOTE---------

inverter inoperable.

Enter applicable Conditions and Required Actions of LCO 3.8.9, "Distribution Systems-Operating" with any instrument 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

BRAIDWOOD -

UNITS 1 & 2 3.8.7 - I Amendment 129