ML100550450
| 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 Watts Bar - Unit 2 3.2-1 (developmental)
A 3.2 POWER DISTRIBUTION LIMITS 3.2.1 Heat Flux Hot Channel Factor (FQ (Z))
LCO 3.2.1 FQ (Z), as approximated by FC Q (Z) and FW Q (Z), shall be within the limits specified in the COLR.
APPLICABILITY:
MODE 1.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. FC Q (Z) not within limit.
A.1 Reduce THERMAL POWER 1% RTP for each 1% FC Q (Z) exceeds limit.
15 minutes AND A.2 Reduce Power Range Neutron FluxHigh trip setpoints > 1% for each 1% FC Q (Z) exceeds limit.
8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> AND A.3 Reduce Overpower T trip setpoints 1% for each 1% FC Q (Z) exceeds limit.
72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> AND A.4 Perform SR 3.2.1.1.
Prior to increasing THERMAL POWER above the limit of Required Action A.1 (continued)
FQ (Z) 3.2.1 Watts Bar - Unit 2 3.2-2 (developmental)
A ACTIONS (continued)
CONDITION REQUIRED ACTION COMPLETION TIME B. FW Q (Z) not within limits.
B.1 Reduce AFD limits 1%
for each 1% FW Q (Z) exceeds limit.
2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> C. Required Action and associated Completion Time not met.
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 />
FQ (Z) 3.2.1 Watts Bar - Unit 2 3.2-3 (developmental)
A 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 FC Q (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 FC Q (Z) was last verified AND 31 EFPD thereafter (continued)
FQ (Z) 3.2.1 Watts Bar - Unit 2 3.2-4 (developmental)
B SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE FREQUENCY SR 3.2.1.2
NOTE------------------------------
If FW Q (Z) is within limits and measurements indicate maximum over z
K(Z)
(Z)
F C Q
has increased since the previous evaluation of FC Q (Z):
- a.
Increase FW Q (Z) by the appropriate factor specified in the COLR and reverify FW Q (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 maximum over z
K(Z)
(Z)
F C Q
has not increased.
Verify FW Q (Z) is within limit.
Once after initial fuel loading and each refueling prior to THERMAL POWER exceeding 75% RTP AND (continued)
FQ (Z) 3.2.1 Watts Bar - Unit 2 3.2-5 (developmental)
A 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 FW Q (Z) was last verified AND 31 EFPD thereafter
FN H
3.2.2 Watts Bar - Unit 2 3.2-6 (developmental)
A 3.2 POWER DISTRIBUTION LIMITS 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (FN H)
LCO 3.2.2 FN H shall be within the limits specified in the COLR.
APPLICABILITY:
MODE 1.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. ------------NOTE-----------------
Required Actions A.2 and A.3 must be completed whenever Condition A is entered.
FN H not within limit.
A.1.1 Restore FN H to within limit.
4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> OR A.1.2.1 Reduce THERMAL POWER to < 50% RTP.
4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> AND A.1.2.2 Reduce Power Range Neutron FluxHigh trip setpoints to 55% RTP.
8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 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)
FN H
3.2.2 Watts Bar - Unit 2 3.2-7 (developmental)
A 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 associated Completion Time not met.
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 /> SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.2.2.1 Verify FN H 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
AFD 3.2.3 Watts Bar - Unit 2 3.2-8 (developmental)
A 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 POWER to < 50% RTP.
30 minutes SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.2.3.1 Verify AFD within limits for each OPERABLE excore channel.
7 days 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
QPTR 3.2.4 Watts Bar - Unit 2 3.2-9 (developmental)
A 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 POWER 3% from RTP for each 1% of QPTR
> 1.00.
2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> AND A.2 Perform SR 3.2.4.1 and reduce THERMAL POWER 3% from RTP for each 1% of QPTR
> 1.00.
Once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter AND A.3 Perform SR 3.2.1.1 and 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 Once per 7 days thereafter AND A.4 Reevaluate safety analyses and confirm results remain valid for duration of operation under this condition.
Prior to increasing THERMAL POWER above the limit of Required Action A.1 (continued)
QPTR 3.2.4 Watts Bar - Unit 2 3.2-10 (developmental)
A 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 detectors to show QPTR of 1.0.
Prior to increasing THERMAL POWER 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 SR 3.2.2.1.
Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after 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 associated Completion Time not met.
B.1 Reduce THERMAL POWER to 50% RTP.
4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />
QPTR 3.2.4 Watts Bar - Unit 2 3.2-11 (developmental)
B 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