3.9 "Refueling Operations" Flashcards
LCO 3.9.1 title
Boron Concentration
LCO 3.9.1 requirement
Boron concentrations of the PCS and refueling cavity shall be maintained at the refueling boron concentration
LCO 3.9.1 applicability
Mode 6
LCO 3.9.1 required actions < 1 hour
Boron concentration not w/in limit, then suspend core alterations, suspend positive reactivity additions, AND initiate action to restore boron concentration to w/in limit immediately
LCO 3.9.2 title
Nuclear Instrumentation
LCO 3.9.2 requirement
2 source range channels shall be operable
LCO 3.9.2 applicability
Mode 6
LCO 3.9.2 required actions < 1 hour
- 1 source range channel inoperable, then suspend core alterations, AND suspend positive reactivity additions immediately
- 2 source range channels inoperable, then initiate action to restore 1 source range channel to operable immediately
LCO 3.9.3 title
Containment Penetrations
LCO 3.9.3 requirement
The containment penetrations shall be in the following status:
- The equipment hatch closed and held in place by 4 bolts (only required to be closed when fuel handling area ventilation system isn’t in compliance with LCO 3.7.12 “Fuel Handling Area Ventilation System”
- 1 door in the personnel air lock closed (only required when the equipment hatch is closed)
- 1 door in the emergency air lock closed
- Each penetration providing direct access from containment atmosphere to outside atmosphere either closed by manual or automatic isolation valve, blind flange or equivalent, OR capable of being closed by an operable Refueling Containment High Radiation Initiation signal
LCO 3.9.3 applicability
- During core alterations
- During movement of irradiated fuel assemblies w/in containment
LCO 3.9.3 required actions < 1 hour
1 or more containment penetrations not in required status, then suspend core alterations AND suspend movement of irradiated fuel assemblies w/in containment immediately
LCO 3.9.4 title
SDC and Coolant Circulation - High Water Level
LCO 3.9.4 requirement
- 1 SDC train shall be operable and in operation
- The required SDC train may not be in operation for <= 1 hour per 8 hour period, provided no operations are permitted that would cause reduction of the PCS boron concentration
- The required SDC train may be made inoperable for <= 2 hours per 8 hour period for testing or maintenance, provided 1 SDC train is in operation providing flow through the core, and core outlet temperature is <= 200 F
LCO 3.9.4 applicability
Mode 6 with refueling cavity water level >= 647’ elevation
LCO 3.9.4 required actions < 1 hour
1 required SDC train inoperable or not in operation, then initiate action to restore SDC train to operable and in operation, suspend operations involving a reduction in PCS boron concentration, AND suspend loading irradiated fuel assemblies in the core immediately
LCO 3.9.5 title
SDC and Coolant Circulation - Low Water Level
LCO 3.9.5 requirement
2 SDC trains shall be operable and 1 SDC train shall be in operation
LCO 3.9.5 applicability
Mode 6 with refueling cavity water level < 647’ elevation
LCO 3.9.5 required actions < 1 hour
- 1 SDC train inoperable, then initiate action to restore SDC train to operable OR initiate action to establish refueling cavity water level >= 647’ elevation immediately
- No SDC train operable or in operation, then suspend operations involving a reduction in PCS boron concentration, initiate action to restore 1 SDC train to operable and in operation. AND initiate action to close all containment penetrations providing direct access from containment atmosphere to outside atmosphere immediately
LCO 3.9.6 title
Refueling Cavity Water Level
LCO 3.9.6 requirement
Refueling cavity water level shall be maintained >= 647’ elevation
LCO 3.9.6 applicability
- During core alterations
- During movement of irradiated fuel assemblies w/in containment
LCO 3.9.6 required actions < 1 hour
Refueling cavity water level not w/in limit, then suspend core alterations AND suspend movement of irradiated fuel assemblies w/in containment immediately
