3.8.8 Inverters - Shutdown

Question 1

3.8.8 Inverters - Shutdown
Required Inverters shall be OPERABLE to support the onsite Class 1E AC vital instrument bus electrical power distribution subsystem(s) required by L.C.O 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

3.8.8

A. One or more required inverters inoperable

Answer 2

A.1 Declare affected required feature(s) inoperable (Immediately)
Or
A.2.1 Suspend Core alterations (Immediately)
AND
A.2.2 Suspend movement of irradiated fuel assemblies (immediately)
AND
A.2.3 Initiate action to suspend operations involving positive reactivity additions
AND
A.2.4 Initiate action to restore inverters to OPERABLE status (Immediately)