ML100550450

Watts Bar Nuclear Plant, Unit 2, Developmental Revision B - Technical Specifications 3.2 - Power Distribution Limits

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

F Q (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 (F Q (Z))

LCO 3.2.1 F Q (Z), as approximated by F C Q (Z) and F W Q (Z), shall be within the limits specified in the COLR.

APPLICABILITY: MODE 1.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. F C Q (Z) not within limit. A.1 Reduce THERMAL POWER 1% RTP for each 1% F C Q (Z) exceeds limit. 15 minutes AND A.2 Reduce Power Range Neutron Flux-High trip

setpoints >

1% for each 1% F C 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% F C 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)

F Q (Z)3.2.1 Watts Bar - Unit 2 3.2-2 (developmental)

A ACTIONS (continued) CONDITION REQUIRED ACTION COMPLETION TIME B. F W Q (Z) not within limits. B.1 Reduce AFD limits 1% for each 1% F W 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 />

F Q (Z)3.2.1 Watts Bar - Unit 2 3.2-3 (developmental)

A SURVEILLANCE REQUIREMENTS

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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.

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SURVEILLANCE FREQUENCY SR 3.2.1.1 Verify F C 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 F C Q (Z) was last verified AND 31 EFPD thereafter (continued)

F Q (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 F W Q (Z) is within limits and measurements indicate maximum over z K(Z)(Z)F C Q has increased since the previous evaluation of F C Q (Z): a. Increase F W Q (Z) by the appropriate factor specified in the COLR and reverify F W 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.

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Verify F W Q (Z) is within limit.

Once after initial fuel loading and

each refueling prior

to THERMAL

POWER exceeding

75% RTP AND (continued)

F Q (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 F W Q (Z) was last verified AND 31 EFPD thereafter

F NH 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 (F NH)

LCO 3.2.2 F NH 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.

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F NH not within limit.

A.1.1 Restore F NH 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 Flux-High 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)

F NH 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.

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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 F NH 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.

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NOTE--------------------------------------------

The AFD shall be considered outside limits when two or more OPERABLE excore channels indicate AFD to be outside limits.

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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.

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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.

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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.

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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.

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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