Tech Specs

Question 1

What is the LCO and applicability of Technical Specification 3.8.7, for Distribution Systems-Operating?

Answer 1

1) LCO 3.8.7. Division 1, Division 2, and Division 3 AC and DC electrical power distribution subsystems shall be OPERABLE.
2) Applicability: Modes 1, 2, and 3. (NOTE) Division 3 electrical subsystems are not required to be OPERABLE when High Pressure Core Spray System is INOPERABLE.

Question 2

Are there any immediate or less than one hour actions for LCO 3.8.7?

Answer 2

1) Condition D. One or more Division 3 AC or DC electrical power distribution subsystems inoperable - Declare High Pressure Core Spray System INOPERABLE - Immediately
2) Two or more divisions with INOPERABLE distribution subsystems that result in a loss of function - Enter LCO 3.0.3 - Immediately

Question 3

What is the LCO and applicability for Technical Specification 3.8.8, Distribution Systems-Shutdown?

Answer 3

1) LCO 3.8.8 The necessary portions of the Division 1, Division 2, and Division 3 AC and DC electrical power distribution subsystems shall be OPERABLE to support equipment required to be OPERABLE.
2) Applicability: Modes 4 and 5. During movement of recently irradiate fuel assemblies in the primary Containment or Fuel Handling Building.

Question 4

Are than any immediate or one hour actions associated with Technical Specification 3.8.8?

Answer 4

Condition A: One or more required AC or DC electrical power distribution subsystems INOPERABLE -

ALL OF THE FOLLOWING ARE IMMEDIATE ACTIONS
1) Declare associated supported required feature(s) inoperable.

    OR

2.1) Suspend CORE ALTERATIONS

AND

2.2) Suspend movement of recently irradiated fuel assemblies in the primary Containment and Fuel Handling Building.

AND

2.3) Initiate action to suspend operations with potential for draining the reactor vessel.

AND

2.4) Initiate actions to restore required AC and DC electrical power distribution subsystems to OPERABLE status.

AND

2.5) Declare associated required shutdown cooling subsystem(s) inoperable and not in operation.