ML20134A111
| ML20134A111 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 01/23/1997 |
| From: | NRC (Affiliation Not Assigned) |
| To: | |
| Shared Package | |
| ML20134A115 | List: |
| References | |
| NUDOCS 9701280180 | |
| Download: ML20134A111 (3) | |
Text
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i AND b.
Within two hours fully withdraw the shutdown banks.
I c.
If the above actions and associated completion times are not met, be in hot j
shutdown within the following six hours.
2.
When the reactor is critical, the control banks shall be inserted no further than the limits shown by the lines on Figure 15.3.10-1. If this cor dition is not met,.
perform the following actions.
)
Within one hour verify that the shutdown margin exceeds the applicable a.
value as shown in Figure 15.3.10-2; 0R within one hour restore the -
shutdown margin by boration; AND b.
Within two hours restore the control banks to within limits.
c.
If the above actions and associated completion times are not met, be in hot shutdown within the following six hours.
' l E.
' POWER DISTRIBUTION LIMITS l
1.
Hot Channel Factors l
a.
The hot channel factors defined in the basis shall meet the following limits:
Fv(Z) S (2.50) x K(Z) for P > 0.5 P
1 F (Z) s 5.00 x K(Z) for P S 0.5 9
i fm < l.70 x [1 + 0.3 (1-P)]
Where P is the fraction of full power at which the core is operating, K(Z) is the function in Figure 15.3.10-3 and Z is the core height location of Fn.
1 b.
If Fn(Z) exceeds the limit of Specification 15.3.10.E.1.a. within fifteen minutes reduce thermal power until Fn(Z) limits are satisfied;
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(1).
After thermal power has been reduced in accordance with Specification 15.3.10.E.1.b, perform the following actions:
Unit 1 - Amendment No.190. H4. 79.17115.3.10-5 l
. Unit 2 - Amendment No. TM, TW, 156,175
. Corrected January 23, 1997 9701290180 970123 PDR ADOCK 05000266
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a.
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(3)
Reevaluate safety analyses and confirm results remain valid for l
duration of operation under this condition. This action shall be completed prior to increasing thermal power above the limit imposed by Specification 15.3.10.E.3.a.(1).
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(4)
Upon completion of Specification 15.3.10.E.3.a.(3), calibrate the j
excore detectors. This action shall be completed prior to increasing thermal power above the limit imposed by Specification
(
l5.3.10.E.3.a.(1);
M are within the limits of Specification j
N (5)
Verify that Fn(Z) and F 3n 15.3.10.E.1.a within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after reaching rated thermal power, l
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
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imposed by Specification 15.3.10.E.3.a.(1).
i (6)
If the above actions and associated completion times are not met, j
within the following four hours reduce thermal power to $50 percent of rated thermal power.
b.
If no quadrant power tilt alarms are available, within twelve hours and every twelve hours thereafter, verify that quadrant power tilt is within limits by performing calculations.
When one power range channel is inoperable and thermal power is greater c.
than 75% of rated thermal power, within twelve hours and every twelve hours thereafter, verify that quadrant power tilt is within limits by use of the movable incore detectors.
l F.
AT-POWER PHYSICS TESTS EXCEPTIONS j
i 1.
During the performance of at-power physics tests, the requirements of:
Specification 15.3.10 B, " Rod Operability and Bank Alignment Limits"
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Specification 15.3.10.D, " Bank Insertion Limits" Specification 15.3.10.E.2," Axial Flux Difference" Specification 15.3.10.E.3, " Quadrant Power Tilt" are suspended, provided:
a.
Thermal power is maintained 585 percent of rated thermal power; M
b.
Power Range Neutron Flux - High Trip setpoints are set at a maximum setting of 90 percent of rated thermal power; Unit 1 - Amendment No. 49, 171 15.3.10-8 Unit 2 - Amendment No. E 175 Corrected January 23, 1997
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2.
Within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> prior to the initiation of physics tests, verify that Power Range Neutron Flux - High Trip setpoints are s90 percent of rated thermal power.
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' 3.
If the shutdown margin is not within the limits of Specification 15.3.10.A.1,
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within 15 minutes initiate boration to restore the shutdown margin, AND within 1
one hour suspend physics tests exceptions.
4.
If thermal power exceeds 85 percent of rated thermal power, within one hour reduce thermal power to s85 percent of rated thermal power, OR within one hour suspend physics tests exceptions.
5.
If the Power Range Neutron Flux - High Trip setpoints are greater than 90 percent of rated thermal power, within one hour restore the Power Range Neutron Flux -
High Trip setpoints to 590 percent of rated thermal power, DR within one hour l
suspend physics tests exceptions.
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6.
Every hour, while at-power physics tests are in progress, verify that thermal I
power is $85 percent of rated thermal power.
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7.
At least once every 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, verify Fn(Z) and F"a are within the required limits.
i G.
LOW POWER PHYSICS TESTS EXCEPTIONS i
j 1.
During the performance oflow power physics tests, the requirements of:
i Specification 15.3.10.B," Rod Operability and Bank Alignment Limits" i '
Specification 15.3.10.D " Bank Insertion Limits" Specification 15.3.10.E, " Power Distribution Limits" I
are suspended, provided the lowest RCS loop average temperature is greater than j
the minimum temperature for criticality.
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2.
If the shutdown margin is not within the limits of Specification 15.3.10.A within
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15 minutes initiate boration to restore the shutdown margin, AND within one hour suspend physics tests exceptions.
3.
If power is not within limits, open the reactor trip breakers immediately.
4.
Iflowest RCS loop average temperature is less than the minimum temperature for criticality, within 15 minutes restore lowest RCS loop average temperature to within limits, OR within 30 minutes be subcritical.
Unit 1 - Amendment No.171 15.3.10-9 Unit 2 - Amendment No.175 Corrected January 23, 1997
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