ML041130122

Tech Spec Pages for License Amendments 166 & 166 Extensions of the Complete Times for Restoring an Inoperable Diesel Generator from 7 Days to 14 Days.

ML041130122
Person / Time
Site:	Diablo Canyon
Issue date:	04/20/2004
From:	NRC/NRR/DLPM
To:
Khanna M, NRR/DLPM/EMCB, 415-2150
Shared Package
ML041140088	List: ML041130122
References
TAC MB9146, TAC MB9147
Download: ML041130122 (2)

Text

AC Sources - Operating 3.8.1 3.8 ELECTRICAL POWER SYSTEMS 3.8.1 AC Sources - Operating LCO 3.8.1 The following AC electrical sources shall be OPERABLE:

a. Two qualified circuits between the offsite transmission network and the onsite Class 1E AC Electrical Power Distribution System; and

b. Three diesel generators (DGs) capable of supplying the onsite Class I E power distribution subsystem(s); and

c. Two supply trains of the diesel fuel oil (DFO) transfer system.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One required offsite circuit A.1 Perform SR 3.8.1.1 for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> inoperable. required OPERABLE AND offsite circuit.

Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

AND A.2 Restore required offsite 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> circuit to OPERABLE AND status.

14 days from I discovery of failure to meet LCO.

(continued)

DIABLO CANYON - UNITS 1 & 2 3.8-1 Unit 1 -Amendment No. 435 166 Unit 2 - Amendment No. 135 167

AC Sources - Operating 3.8.1 ACTIONS (continued)

CONDITION R REQUIRED ACTION I COMPLETION TIME B. One DG inoperable. B.1 Perform SR 3.8.1.1 for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> the required offsite AND circuit(s).

Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

AND NOTE---

In MODE 1, 2, and 3, TDAFW pump is considered a required redundant feature.

B.2 Declare required 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> from discovery feature(s) supported by of Condition B the inoperable DG concurrent with inoperable when its inoperability of required redundant redundant required feature(s) is inoperable. feature(s).

AND B.3.1 Determine OPERABLE 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> DG(s) is not inoperable due to common cause failure.

OR B.3.2 Perform SR 3.8.1.2 for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> OPERABLE DG(s).

AND 14 days from B.4 Restore DG to discovery of failure to I

OPERABLE status.

meet LCO.

(continued)

DIABLO CANYON - UNITS 1 & 2 3.8-2 Unit I - Amendment No. 4-5 166 Unit 2 - Amendment No. 435 167