ML20107E374
| ML20107E374 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 02/14/1985 |
| From: | VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | |
| Shared Package | |
| ML20107E361 | List: |
| References | |
| NUDOCS 8502250547 | |
| Download: ML20107E374 (7) | |
Text
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ENCLOSURE 2 850225054'1 850214 PDR ADOCK 05000330 P
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S TECHNICAL SPECIFICATION CHANGES NORTH ANNA UNIT 1 l
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POWER DISTRIBUTION LIMITS NUCLEAR ENTHALPY HOT CHANNEL FACTOR - F H LIMITING CONDITION FOR OPERATION 3.2.3 F
shall be limited by the following relationship-AH F
s1.55 [1 + 0.3 (1-P)]
H THERMAL POWER where: P= RATED THERMAL POWER APE LICABILITY: MODE 1.
ACTION _:
With F exceeding its limit:
AH
- a. Reduce THERMAL POWER to less than 50% of RATED THERMAL POWER within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and reduce the Power Range Neutron Flux-High Trip Setpoints s 55% of RATED THERMAL POWER within the next 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />,
- b. Demonstrate through in-core mapping that is witMn its limit H
within 24' hours after exceeding thc' limit or reduce THERMAL POWER to less than 5% of RATED THERMAL POWER within the next 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, and
- c. Identify and correct the cause of the out of limit condition prior to increasing THERMAL POWER above the reduced limit required by a o
b, above; subsequent POWER OPERATION may proceed provided that is demonstrated through in-core mapping to be within its limit AH at a nominal 50% of RATED THERMAL POWER prior to exceeding this THERMAL POWER, at a nominal 75% of RATED THERMAL POWER prior to exceeding this THERMAL POWER and within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after attaining 95%
or greater RATED THERMAL POWER.
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TECHNICAL SPECIFICATION CHANGES NORTH ANNA UNIT 2 D
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POWER DISTRIBUTION LIMIT _S NUCLEAR ENTHALPY HOT CHANNEL FACTOR - F H LIMITING CONDITION FOR OPERATION 3.2.3
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shall be limited by the following relationship:
H s1.55 [1 + 0.3 (1-P)]
H THERMAL POWER l
where: P= RATED THERMAL POWER APPLICABILITY: MODE 1.
ACTION:
With F exceeding its limit:
H
- a. Reduce THERMAL POWER to less than 50% of RATED THERMAL POWER within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and reduce the Power Range Neutron Flux-High Trip Setpoints to less than or equal to 55% of RATED THERMAL POWER within the next 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />,
- b. Demonstrate through in-core mapping that F is within its limit H
within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after exceeding the limit or reduce THERMAL POWER to less than 5% of RATED THERMAL POWER within the next 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, and
- c. Identify and correct the cause of the out of limit condition prior to increasing THERMAL POWER above the reduced limit required by a o
b, above; subsequent POWER OPERATION may proceed provided that is dem nstrated through in-core mapping to be within its limit AH at a nominal 50% of RATED THERMAL POWER prior to exceeding this THERMAL POWER, at a nominal.75% of RATED THERMAL POWER prior to NORTH ANNA - UNIT 2 3/4 2-9 L
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NORTH ANNA'- UNIT 2 3/4 2-11