3.1 REACTIVITY CONTROL SYSTEMS Flashcards
What is the LCO and APPLICABILITY of Technical Specification 3.1.1, Shutdown Margin?
LCO: SDM shall be:
a. Greater than or equal to 0.38% delta k/k, with the highest worth control rod analytically determined; or
b. Greater than or equal to 0.28% delta k/k, with the highest worth control rod determined by test.
APPLICABILITY: MODES 1, 2, 3, 4, and 5.
What are the one hour, or less, actions associated with Technical Specification 3.1.1, Shutdown Margin?
Condition C: SDM not within limits is MODE 3 - Initiate action to fully insert all insertable control rods - Immediately
Condition D: SDM not within limits in MODE 4 - initiate action to fully insert all insertable control rods - Immediately
AND initiate action to restore primary containment to OPERABLE status - 1 hour
AND initiate action to restore isolation capability in each required primary containment penetration flow path not isolated - 1 hour
AND **NOTE Entry and exit is permissible under administrative control****
Initiate action to close one door in each primary containment air lock - 1 hour
Condition E: SDM not within limits in MODE 5 - Suspend CORE ALTERATIONS except for control rod insertion and fuel assembly removal - Immediately
AND Initiate action to fully insert all insertable control rods in core cells containing one or more fuel assemblies - Immediately
AND Initiate action to restore primary containment to OPERABLE status - 1 hour
AND initiate action to restore isolation capability in each required primary containment penetration flow path not isolated - 1 hour
AND **NOTE Entry and exit is permissible under administrative control****
Initiate action to close one door in each primary containment air lock - 1 hour
What is the LCO and APPLICABILITY of Technical Specification 3.1.2, Reactivity Anomalies?
LCO: The reactivity difference between the monitored rod density and the predicted rod density shall be within plus/minus 1% delta k/k
APPLICABILITY: MODES 1 and 2
What are the one hour, or less, actions associated with Technical Specification 3.1.2, Reactivity Anomalies?
NONE
What is the LCO and APPLICABILITY of Technical Specification 3.1.3, Control Rod Operability?
LCO: Each control rod shall be OPERABLE
APPLICABILITY: MODES 1 and 2
What are the one hour, or less, actions associated with Technical Specification 3.1.3, Control Rod OPERABILITY?
Condition A: One withdrawn control rod stuck - Verify stuck control rod separation criteria is met - Immediately
What is the LCO and APPLICABILITY of Technical Specification 3.1.4, Control Rod Scram Times?
LCO:
A. No more than 13 OPERABLE control rods shall be “slow” in accordance with Table 3.1.4.1; and
B. No OPERABLEd control rod that is “slow” shall occupy a location adjacent to another OPERABLE control rod that is “slow” or a withdrawn control rod that is stuck.
APPLICABILITY: MODES 1 and 2
What are the one hour, or less, actions associated with Technical Specification 3.1.4, Control Rod Scram Times?
NONE
What is the LCO and APPLICABILITY of Technical Specification 3.1.5, Control Rod Scram Accumulators?
LCO: Each control rod scram accumulator shall be OPERABLE
APPLICABILITY: MODES 1 and 2
What are the one hour, or less, actions associated with Technical Specification 3.1.5, Control Rod Scram Accumulators?
Condition B Two or more control rod scram accumulators inoperable with reactor steam dome pressure greater than or equal to 600 psig - Restore charging water header pressure to greater than or equal to 1520 psig - 20 minutes from discovery of Condition B concurrent with charging water header pressure less than 1520 psig
AND Only applicable if the associated control rod scram time was within the limits of Table 3.1.4.1 during the last scram time Surveillance
Declare the associated control rod scram time “slow” - 1 hour
OR
Declare the associated control rod inoperable - 1 hour
Condition C: One or more control rod scram accumulators inoperable with reactor steam dome pressure less than 600 psig - Verify all control rods associated with inoperable accumulators are fully inserted - Immediately upon discovery of charging water header pressure less than 1520 psig
AND Declare the associated control rod inoperable - Immediately
What is the LCO and APPLICABILITY of Technical Specification 3.1.6, Control Rod Pattern?
LCO: Operable control rods shall comply with the requirements of the banked position withdrawal sequence (BPWS).
APPLICABILTY: MODES 1 and 2 with THERMAL POWER less than or equal to 19.0% RTP.
What are the one hour, or less, actions associated with Technical Specification 3.1.6, Control Rod Pattern?
Condition B: Nine or more Operable control rods not in compliance with BPWS NOTE Affected control rods may be bypassed in RACS in accordance with SR 3.3.2.1.9 for insertion only - Suspend withdrawal of control rods - Immediately
AND Place the reactor mode switch in shutdown position - 1 hour
What is the LCO and APPLICABILITY of Technical Specification 3.1.7, Standby Liquid Control (SLC) System?
LCO: Two SLC subsystems shall be OPERABLE.
APPLICABILITY: MODES 1 and 2
What are the one hour, or less, actions associated with Technical Specification 3.1.7, Standby Liquid Control (SLC) System?
NONE
What is the LCO and APPLICABILITY of Technical Specification 3.1.8, Scram Discharge Volume (SDV) Vent and Drain Valves?
LCO: Each SDV vent and drain valve shall be OPERABLE
APPLICABILTY: MODES 1 and 2
