3.8.5 DC Sources - Shutdown

Question 1

3.8.5 DC Sources - Shutdown

DC Electrical power subsystem shall be OPERABLE to support DC electrical power distribution subsystem required by LCO 3.8.10, “Distribution Systems - Shutdown”

Applicability: ???

Answer 1

Modes 5 and 6, During Movement of irradiated fuel assemblies

Note: In Modes 1, 2, 3, and 4, Required action A.2.3 is not applicable

Question 2

3.8.5

A. One required DC Electrical Subsystem inoperable

Answer 2

A.1 Declare affected required feature(s) inoperable (Immediately)

OR

A.2.1 Suspect Core Alterations (Immediately)
AND
A.2.2 Suspend movement of irradiated fuel assemblies (Immediately)
AND
A.2.3 Initiate action to suspend positive reactivity additions (Immediately)
AND
A.2.4 Initiate action to required to restore required DC electrical power subsystems to OPERABLE status (Immediately)