3.1 Reactivity Control Flashcards
LCO 3.1.1: SDM shall be >/= value in COLR
Applicability: Modes _______ with RTCB open or CEA withdrawal system not capable of CEA withdrawal.
Actions:
A: SDM not within limit: Initiate boration to restore SDM. Completion time: _________
Applicable in Modes 3,4, and 5 with RTCB open or CEDMCS not capable of CEA withdrawal
Completion TIme: 15 Minutes
SDM RTCB Closed
LCO 3.1.2 Reactivity shall be controlled by:
a. SDM shall be >/= value in COLR
b. KN-1 shall be <.99 when Tc
c. Reactor criticality shall not be achieved with shutdown group movement
Applicability: Modes ________ with RTCB closed and the CEA drive system capable of CEA withdrawal.
Actions:
A: SDM not within limits:
Required Action:
A.1 Initiate boration to restore SDM.
Completion Time: ___________
B: KN-1 Not within limit when Tc
OR
Reactor criticality can be achieved by shutdown group movement:
Required Action:
B.1 Vary CEA position to restore limits
Completion Time:________
AND
B.2 Initiate boration to restore limits
Completion Time:__________
Applicability: Modes 3-5 with RTCB Closed and CEA drive system capable of CEA withdrawal
A.1, B.1, and B.2 Completion times: 15 Minutes
LCO 3.1.3 The Core reactivity balance shall be within +/- 1% dk/k of predicted values.
Applicability: Mode ____
Actions:
A: Core reactivity balance not within limit
Required Action:
A.1 Re-evaluate core design and safety analysis an determine that the reactor core is acceptable for continued operation
Completion Time: ________
AND
A.2 Establish appropriate operating restrictions and SRs
Completion Time:_________
B: Required actions/completion times note met:
B.1 ____________
Completion time: _______
MTC shall be maintained within the limits specified in the COLR, and a maximum positive limit that varies linearly from 0.5E-4 dk/k/F at 0% to 0.0 dk/k/F at 100%.
Applicable: Modes _______
Actions:
A. MTC not within limits
A.1 Required Action: Be in Mode 3
Completion Time:_________
LCO 3.1.5: All full strength CEAs shall be operable, and all full strength and part strength CEAs shall be aligned to within _______ (indicated position) of all other CEAs in their respective groups.
Applicable: Modes ___________
Actions:
A: One or more CEAs trippable and misaligned from its group by _____________
OR
One CEA trippable and misaligned from its group by________
Required Action:
A.1 Reduce Thermal power in accordance with the limits in the COLR
Completion time:__________
AND
A.2 Restore CEA alignment
Completion Time:__________
B: Only one CEA position indicator channel operable for One CEA per CEA group
Required Action:
B.1 Restore at least 2 position indicator channels to operable
Completion Time:_________
OR
B.2 Verify CEA groups with inoperable position indicators are fully withdrawn or fully inserted while maintaining insertion limits of LCOs 3.1.6,3.1.7, and 3.1.8
Completion Times: __________ AND ________
C: Required actions of A and B not met OR One or more full strength CEAs untrippable
Required Action:
C.1 Be in Mode 3
Completion Time: _________
D: 2 or more CEAs trippable and misaligned from their group by ___________
Required Action: D.1 ______________
Completion Time:___________
CEAs shall be aligned to within 6.6”
Applicable in Modes 1 and 2
A: 1 or more CEAs trippable and misaligned from its group by >6.6” and <=9.9”
LCO 3.1.6 All shutdown CEAs shall be withdrawn ________
Applicable: Mode_____, Mode _____________________
Note: LCO is not applicable during SR 3.1.5.3 (CEA exercising)
Actions:
A: One SD CEA not within limit
A.1 Restore SD CEA to within limits
Completion Time:_______
B: Action not met:
B.1 Be in Mode 3
Completion TIme:_________
LCO 3.1.6 All shutdown CEAs shall be withdrawn >/=147.75”
Applicable: Mode1, Mode 2 with any Reg Group CEA not fully inserted
Note: LCO is not applicable during SR 3.1.5.3 (CEA exercising)
Actions:
A: One SD CEA not within limit
A.1 Restore SD CEA to within limits
Completion Time:2 hours
B: Action not met:
B.1 Be in Mode 3
Completion TIme:6 hours
LCO 3.1.7 The PDIL alarm circuit shall be operable, and with COLSS in service or out of service, the Reg Groups shall be limited to the withdrawal sequence and insertion limits specified in the COLR and the associated time restraints
Applicable: Modes _______
LCO is not applicable during SR 3.1.5.3 or for up to 2 hours following RPCB
Actions:
A: Regulating CEA groups inserted beyond the transient insertion limit with COLSS in or out of service
A.1 Restore Reg CEA groups to within limits
Completion time:_____________
OR
A.2: Recduce thermal power to = the fraction of power allowed by the CEA group position and insertion limits of the COLR
Completion time:_____________
B: Reg group CEAs inserted between short term steady state and transient insertion limit for >4 hours per 24 hour intervals with COLSS in or out of service
B.1 Restrict increases in power to ________
Compeltion Time:____________
C: Reg group CEAs inserted between the long term steady state and transient insertion limits for >5EFPD per 30 EFPD or >14 EFPD per 365 EFPD with COlls in or out of service
C.1 Restore regulating CEA groups to within limits
Completion Time:____________
D: PDIL alarm circuit inoperable
D.1 Perform SR 3.1.7.1 (Verify RG CEA positions)
Completion Time: ________ AND¨______\_
E: Actions not met:
E.1 Be in Mode 3
Completion TIme:_________
LCO 3.1.7 The PDIL alarm circuit shall be operable, and with COLSS in service or out of service, the Reg Groups shall be limited to the withdrawal sequence and insertion limits specified in the COLR and the associated time restraints
Applicable: Modes 1 and 2
LCO is not applicable during SR 3.1.5.3 or for up to 2 hours following RPCB
Actions:
A: Regulating CEA groups inserted beyond the transient insertion limit with COLSS in or out of service
A.1 Restore Reg CEA groups to within limits
Completion time:2 hours
OR
A.2: Recduce thermal power to = the fraction of power allowed by the CEA group position and insertion limits of the COLR
Completion time: 2 hours
B: Reg group CEAs inserted between short term steady state and transient insertion limit for >4 hours per 24 hour intervals with COLSS in or out of service
B.1 Restrict increases in power to = 5% per hour
Completion Time: 1`5 minutes
C: Reg group CEAs inserted between the long term steady state and transient insertion limits for >5EFPD per 30 EFPD or >14 EFPD per 365 EFPD with COlls in or out of service
C.1 Restore regulating CEA groups to within limits
Completion Time: 2 hours
D: PDIL alarm circuit inoperable
D.1 Perform SR 3.1.7.1 (Verify RG CEA positions)
Completion Time: 1 hour AND¨Once every 4 hours thereafter
E: Actions not met:
E.1 Be in Mode 3
Completion TIme: 6 hours
LCO 3.1.8: PS CEA groups shall be limited to the insertion limits in the COLR
Applicable: Modes _________
Actions:
A: PS CEA groups inserted beyond transient insertion limit
A.1 Restore PS CEA groups to wihtin the limit
Completion Time:________
OR
A.2: Reduce power to = the fraction of power specified in the COLR
Completion Time: _________
B: PS CEA groups inserted between long term steady state and transient insertion limits for >/=7 EFPD per 30 EFPD or >/= 14 EFPD per 365 EFPD
B.1 Restore PS CEA groups to within long term steady state limit
Completion Time:______
C: Actions not met:
C.1 Be in Modes 3
Completion Time:________
LCO 3.1.8: PS CEA groups shall be limited to the insertion limits in the COLR
Applicable: Modes: 1 and 2
Actions:
A: PS CEA groups inserted beyond transient insertion limit
A.1 Restore PS CEA groups to wihtin the limit
Completion Time: 2 Hoursa
OR
A.2: Reduce power to = the fraction of power specified in the COLR
Completion Time: 2 Hours
B: PS CEA groups inserted between long term steady state and transient insertion limits for >/=7 EFPD per 30 EFPD or >/= 14 EFPD per 365 EFPD
B.1 Restore PS CEA groups to within long term steady state limit
Completion Time: 2 Hours
C: Actions not met:
C.1 Be in Modes 3
Completion Time: 6 Hours
During Physics Test, requirements of SDM, SD CEA Insertion Limits, and RG CEA insertion limits may be suspended for measurement of CEA worth, provided shutdown reactivity equivalent to at least the highest estimated CEA worth is available for trip insertion or the reactor is subcritical by at least the reactivity equivalent of the highest worth CEA
Applicable: Modes 2 and 3 during physics tests
Note: Operation in Mode 3 is limited to 6 consecutive hours
A: Any full strength CEA not fully inserted and less than the required shutdown reactivity available for trip insertion
OR
All full strength CEAs inserted and the reactor subcritical by less that the above required shutdown reactivity equivalent
A.1 Initiate boration to restore shutdown reactivity
Completion TIme:___________
Completion Time: 15 minutes
During Physics tests, the requirements of:
- MTC
- CEA alignment
- SD CEA Insertion Limits
- RG CEA insertion limits
- PS CEA insertion limits
- ‘Planar Radial peaking factoprs
- Az Tilt
- ASI
- CEACS
May be suspended provided thermal power is restricted to the test plateau, which shal;l not exceed 85% and
shiutdown reactivity equivalent to at least the highest estimated CEA worth is available for trip insertion
Applicable in Modes 1 and 2 during physics testing
Actions:
A: Test power pleateau exceeded
A.1 Reduce power to = the test plateau
Completion Time:_________
B: Action not met:
B.1 Suspend physics testing
Completion Time: __________
A.1 Completion Time: 15 minutes
B.1 COmpletion Time: 1 Hour
During physics tests the requirements of
- RG CEA insertion limits
- PS CEA insertion limits
- RCS Pressure, Temp[erature, and Flow limits
may be suspended provided LHR and DNBR do not exceed COLR limits
Applicable in Mode 1 with power >20% during physics tests
Actions:
A: LHR or DNBR outside the limits specified in the COLR
A.1 Reduce thermal power to restore LHR or DNBR
Completion TIme: ________
B: Action not met
B.1 Suspend Physics tests
Completion TIme:___________
A.1 Comletion Time: 15 minutes
B.1 Completion Time: 1 Hour
