ML100550450: Difference between revisions
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-----------------------------------------------------------NOTE---------------------------------------------------------- | -----------------------------------------------------------NOTE---------------------------------------------------------- | ||
During power escalation at the beginning of each cycle, THERMAL POWER may be increased until an equilibrium power level has been achieved, at which a power distribution map is obtained. | During power escalation at the beginning of each cycle, THERMAL POWER may be increased until an equilibrium power level has been achieved, at which a power distribution map is obtained. | ||
SURVEILLANCE FREQUENCY SR 3.2.1.1 Verify FCQ (Z) is within limit. Once after initial fuel loading and each refueling prior to THERMAL POWER exceeding 75% RTP AND Once within 12 hours after achieving equilibrium conditions after exceeding, by 10% RTP, the THERMAL POWER at which FCQ (Z) was last verified AND 31 EFPD thereafter (continued) | SURVEILLANCE FREQUENCY SR 3.2.1.1 Verify FCQ (Z) is within limit. Once after initial fuel loading and each refueling prior to THERMAL POWER exceeding 75% RTP AND Once within 12 hours after achieving equilibrium conditions after exceeding, by 10% RTP, the THERMAL POWER at which FCQ (Z) was last verified AND 31 EFPD thereafter (continued) | ||
Watts Bar - Unit 2 3.2-3 (developmental) A | Watts Bar - Unit 2 3.2-3 (developmental) A | ||
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: a. Increase FWQ (Z) by the appropriate factor specified in the COLR and reverify FWQ (Z) is within limits; or | : a. Increase FWQ (Z) by the appropriate factor specified in the COLR and reverify FWQ (Z) is within limits; or | ||
: b. Repeat SR 3.2.1.2 once per 7 EFPD using the Power Distribution Monitoring System (PDMS) until two successive incore power distribution measurements indicate F QC(Z) maximum over z K(Z) has not increased. | : b. Repeat SR 3.2.1.2 once per 7 EFPD using the Power Distribution Monitoring System (PDMS) until two successive incore power distribution measurements indicate F QC(Z) maximum over z K(Z) has not increased. | ||
Verify FWQ (Z) is within limit. Once after initial fuel loading and each refueling prior to THERMAL POWER exceeding 75% RTP AND (continued) | Verify FWQ (Z) is within limit. Once after initial fuel loading and each refueling prior to THERMAL POWER exceeding 75% RTP AND (continued) | ||
Watts Bar - Unit 2 3.2-4 (developmental) B | Watts Bar - Unit 2 3.2-4 (developmental) B | ||
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FNH 3.2.2 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) A.3 -------------NOTE------------ | FNH 3.2.2 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) A.3 -------------NOTE------------ | ||
THERMAL POWER does not have to be reduced to comply with this Required Action. | THERMAL POWER does not have to be reduced to comply with this Required Action. | ||
Perform SR 3.2.2.1. Prior to THERMAL POWER exceeding 50% RTP AND Prior to THERMAL POWER exceeding 75% RTP AND 24 hours after THERMAL POWER reaching 95% RTP B. Required Action and B.1 Be in MODE 2. 6 hours associated Completion Time not met. | Perform SR 3.2.2.1. Prior to THERMAL POWER exceeding 50% RTP AND Prior to THERMAL POWER exceeding 75% RTP AND 24 hours after THERMAL POWER reaching 95% RTP B. Required Action and B.1 Be in MODE 2. 6 hours associated Completion Time not met. | ||
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.2.2.1 Verify FNH is within limits specified in the COLR. Once after initial fuel loading and each refueling prior to THERMAL POWER exceeding 75% RTP AND 31 EFPD thereafter Watts Bar - Unit 2 3.2-7 (developmental) A | SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.2.2.1 Verify FNH is within limits specified in the COLR. Once after initial fuel loading and each refueling prior to THERMAL POWER exceeding 75% RTP AND 31 EFPD thereafter Watts Bar - Unit 2 3.2-7 (developmental) A | ||
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---------------------------------------------NOTE-------------------------------------------- | ---------------------------------------------NOTE-------------------------------------------- | ||
The AFD shall be considered outside limits when two or more OPERABLE excore channels indicate AFD to be outside limits. | The AFD shall be considered outside limits when two or more OPERABLE excore channels indicate AFD to be outside limits. | ||
APPLICABILITY: MODE 1 with THERMAL POWER > 50% RTP. | APPLICABILITY: MODE 1 with THERMAL POWER > 50% RTP. | ||
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. AFD not within limits. A.1 Reduce THERMAL 30 minutes POWER to < 50% RTP. | ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. AFD not within limits. A.1 Reduce THERMAL 30 minutes POWER to < 50% RTP. | ||
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QPTR 3.2.4 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) AND A.5 ------------NOTE------------- | QPTR 3.2.4 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) AND A.5 ------------NOTE------------- | ||
Perform Required Action A.5 only after Required Action A.4 is completed. | Perform Required Action A.5 only after Required Action A.4 is completed. | ||
Calibrate excore Prior to increasing detectors to show QPTR THERMAL POWER of 1.0. above the limit of Required Action A.1 AND A.6 ------------NOTE------------- | Calibrate excore Prior to increasing detectors to show QPTR THERMAL POWER of 1.0. above the limit of Required Action A.1 AND A.6 ------------NOTE------------- | ||
Perform Required Action A.6 only after Required Action A.5 is completed. | Perform Required Action A.6 only after Required Action A.5 is completed. | ||
Perform SR 3.2.1.1 and Within 24 hours after SR 3.2.2.1. reaching RTP OR Within 48 hours after increasing THERMAL POWER above the limit of Required Action A.1 B. Required Action and B.1 Reduce THERMAL 4 hours associated Completion POWER to 50% RTP. | Perform SR 3.2.1.1 and Within 24 hours after SR 3.2.2.1. reaching RTP OR Within 48 hours after increasing THERMAL POWER above the limit of Required Action A.1 B. Required Action and B.1 Reduce THERMAL 4 hours associated Completion POWER to 50% RTP. | ||
Time not met. | Time not met. | ||
| Line 100: | Line 94: | ||
< 75% RTP, the remaining three power range channels can be used for calculating QPTR. | < 75% RTP, the remaining three power range channels can be used for calculating QPTR. | ||
: b. SR 3.2.4.2 may be performed in lieu of this Surveillance if adequate power range neutron flux channel inputs are not OPERABLE. | : b. SR 3.2.4.2 may be performed in lieu of this Surveillance if adequate power range neutron flux channel inputs are not OPERABLE. | ||
Verify QPTR is within limit by calculation. 7 days AND Once within 12 hours and every 12 hours thereafter with the QPTR alarm inoperable SR 3.2.4.2 -------------------------------NOTE------------------------------ | Verify QPTR is within limit by calculation. 7 days AND Once within 12 hours and every 12 hours thereafter with the QPTR alarm inoperable SR 3.2.4.2 -------------------------------NOTE------------------------------ | ||
Only required to be performed if input from one or more power range neutron flux channels are inoperable with THERMAL POWER 75% RTP. | Only required to be performed if input from one or more power range neutron flux channels are inoperable with THERMAL POWER 75% RTP. | ||
Verify QPTR is within limit using the PDMS. Once within 12 hours AND 12 hours thereafter Watts Bar - Unit 2 3.2-11 (developmental) B}} | Verify QPTR is within limit using the PDMS. Once within 12 hours AND 12 hours thereafter Watts Bar - Unit 2 3.2-11 (developmental) B}} | ||
Revision as of 03:14, 12 March 2020
| ML100550450 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 02/02/2010 |
| From: | Tennessee Valley Authority |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML100550450 (11) | |
Text
FQ (Z) 3.2.1 3.2 POWER DISTRIBUTION LIMITS 3.2.1 Heat Flux Hot Channel Factor (FQ (Z))
LCO 3.2.1 FQ (Z), as approximated by FCQ (Z) and FWQ (Z), shall be within the limits specified in the COLR.
APPLICABILITY: MODE 1.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. FCQ (Z) not within limit. A.1 Reduce THERMAL 15 minutes POWER 1% RTP for each 1% FCQ (Z) exceeds limit.
AND A.2 Reduce Power Range 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> Neutron FluxHigh trip setpoints > 1% for each 1% FCQ (Z) exceeds limit.
AND A.3 Reduce Overpower T 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> trip setpoints 1% for each 1% FCQ (Z) exceeds limit.
AND A.4 Perform SR 3.2.1.1. Prior to increasing THERMAL POWER above the limit of Required Action A.1 (continued)
Watts Bar - Unit 2 3.2-1 (developmental) A
FQ (Z) 3.2.1 ACTIONS (continued)
CONDITION REQUIRED ACTION COMPLETION TIME B. FWQ (Z) not within limits. B.1 Reduce AFD limits 1% 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for each 1% FWQ (Z) exceeds limit.
C. Required Action and C.1 Be in MODE 2. 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion Time not met.
Watts Bar - Unit 2 3.2-2 (developmental) A
FQ (Z) 3.2.1 SURVEILLANCE REQUIREMENTS
NOTE----------------------------------------------------------
During power escalation at the beginning of each cycle, THERMAL POWER may be increased until an equilibrium power level has been achieved, at which a power distribution map is obtained.
SURVEILLANCE FREQUENCY SR 3.2.1.1 Verify FCQ (Z) is within limit. Once after initial fuel loading and each refueling prior to THERMAL POWER exceeding 75% RTP AND Once within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after achieving equilibrium conditions after exceeding, by 10% RTP, the THERMAL POWER at which FCQ (Z) was last verified AND 31 EFPD thereafter (continued)
Watts Bar - Unit 2 3.2-3 (developmental) A
FQ (Z) 3.2.1 SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE FREQUENCY SR 3.2.1.2 -------------------------------NOTE------------------------------
If FWQ (Z) is within limits and measurements indicate F QC(Z) maximum over z K(Z) has increased since the previous evaluation of FCQ (Z):
- a. Increase FWQ (Z) by the appropriate factor specified in the COLR and reverify FWQ (Z) is within limits; or
- b. Repeat SR 3.2.1.2 once per 7 EFPD using the Power Distribution Monitoring System (PDMS) until two successive incore power distribution measurements indicate F QC(Z) maximum over z K(Z) has not increased.
Verify FWQ (Z) is within limit. Once after initial fuel loading and each refueling prior to THERMAL POWER exceeding 75% RTP AND (continued)
Watts Bar - Unit 2 3.2-4 (developmental) B
FQ (Z) 3.2.1 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.2.1.2 (continued) Once within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after achieving equilibrium conditions after exceeding, by 10% RTP, the THERMAL POWER at which FWQ (Z) was last verified AND 31 EFPD thereafter Watts Bar - Unit 2 3.2-5 (developmental) A
FNH 3.2.2 3.2 POWER DISTRIBUTION LIMITS 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (FNH)
LCO 3.2.2 FNH shall be within the limits specified in the COLR.
APPLICABILITY: MODE 1.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. ------------NOTE----------------- A.1.1 Restore FNH to within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> Required Actions A.2 limit.
and A.3 must be completed whenever Condition A is OR entered.
A.1.2.1 Reduce THERMAL 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> POWER to < 50% RTP.
FNH not within limit.
AND A.1.2.2 Reduce Power Range 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> Neutron FluxHigh trip setpoints to 55% RTP.
AND A.2 Perform SR 3.2.2.1 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> AND (continued)
Watts Bar - Unit 2 3.2-6 (developmental) A
FNH 3.2.2 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) A.3 -------------NOTE------------
THERMAL POWER does not have to be reduced to comply with this Required Action.
Perform SR 3.2.2.1. Prior to THERMAL POWER exceeding 50% RTP AND Prior to THERMAL POWER exceeding 75% RTP AND 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after THERMAL POWER reaching 95% RTP B. Required Action and B.1 Be in MODE 2. 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion Time not met.
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.2.2.1 Verify FNH is within limits specified in the COLR. Once after initial fuel loading and each refueling prior to THERMAL POWER exceeding 75% RTP AND 31 EFPD thereafter Watts Bar - Unit 2 3.2-7 (developmental) A
AFD 3.2.3 3.2 POWER DISTRIBUTION LIMITS 3.2.3 AXIAL FLUX DIFFERENCE (AFD)
LCO 3.2.3 The AFD in % flux difference units shall be maintained within the limits specified in the COLR.
NOTE--------------------------------------------
The AFD shall be considered outside limits when two or more OPERABLE excore channels indicate AFD to be outside limits.
APPLICABILITY: MODE 1 with THERMAL POWER > 50% RTP.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. AFD not within limits. A.1 Reduce THERMAL 30 minutes POWER to < 50% RTP.
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.2.3.1 Verify AFD within limits for each OPERABLE excore 7 days channel.
AND Once within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and every 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> thereafter with the AFD monitor alarm inoperable Watts Bar - Unit 2 3.2-8 (developmental) A
QPTR 3.2.4 3.2 POWER DISTRIBUTION LIMITS 3.2.4 QUADRANT POWER TILT RATIO (QPTR)
LCO 3.2.4 The QPTR shall be 1.02.
APPLICABILITY: MODE 1 with THERMAL POWER > 50% RTP.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. QPTR not within limit. A.1 Reduce THERMAL 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> POWER 3% from RTP for each 1% of QPTR
> 1.00.
AND A.2 Perform SR 3.2.4.1 and Once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> reduce THERMAL thereafter POWER 3% from RTP for each 1% of QPTR
> 1.00.
AND A.3 Perform SR 3.2.1.1 and 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> SR 3.2.2.1.
AND Once per 7 days thereafter AND A.4 Reevaluate safety Prior to increasing analyses and confirm THERMAL POWER results remain valid for above the limit of duration of operation Required Action A.1 under this condition.
(continued)
Watts Bar - Unit 2 3.2-9 (developmental) A
QPTR 3.2.4 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) AND A.5 ------------NOTE-------------
Perform Required Action A.5 only after Required Action A.4 is completed.
Calibrate excore Prior to increasing detectors to show QPTR THERMAL POWER of 1.0. above the limit of Required Action A.1 AND A.6 ------------NOTE-------------
Perform Required Action A.6 only after Required Action A.5 is completed.
Perform SR 3.2.1.1 and Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after SR 3.2.2.1. reaching RTP OR Within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> after increasing THERMAL POWER above the limit of Required Action A.1 B. Required Action and B.1 Reduce THERMAL 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> associated Completion POWER to 50% RTP.
Time not met.
Watts Bar - Unit 2 3.2-10 (developmental) A
QPTR 3.2.4 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.2.4.1 -------------------------------NOTES----------------------------
- a. With input from one power range neutron flux channel inoperable and THERMAL POWER
< 75% RTP, the remaining three power range channels can be used for calculating QPTR.
- b. SR 3.2.4.2 may be performed in lieu of this Surveillance if adequate power range neutron flux channel inputs are not OPERABLE.
Verify QPTR is within limit by calculation. 7 days AND Once within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and every 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter with the QPTR alarm inoperable SR 3.2.4.2 -------------------------------NOTE------------------------------
Only required to be performed if input from one or more power range neutron flux channels are inoperable with THERMAL POWER 75% RTP.
Verify QPTR is within limit using the PDMS. Once within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> AND 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter Watts Bar - Unit 2 3.2-11 (developmental) B