ML20215F831
| ML20215F831 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 12/17/1986 |
| From: | DUKE POWER CO. |
| To: | |
| Shared Package | |
| ML20215F819 | List: |
| References | |
| NUDOCS 8612240080 | |
| Download: ML20215F831 (5) | |
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l ATTACHMENT I PROPOSED TECHNICAL SPECIFICATION CHANGE t
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9612240090 861217 ADOCK 05000369 PDR PDR l
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EMERGENCY CORE COOLING SYSTEMS LIMITING CONDITION FOR OPERATION (Continued) 3)
The volume weighted average boron concentration of the three limiting accumulators 1500 ppu or less, return the volume weighted average boron concer.tration of the three limiting accumulator to greater than 1500 ppm and enter ACTION c.2 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> of the low boron determination or be in HOT STANDBY within the next 6 hour-and reduce pressurizer pres-sure to less than 1000 psig wi. tin the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
SURVEILLANCE REQUIREMENTS 4.5.1.1.1 Each cold leg injection accumulator shall be demonstrated OPERABLE:
a.
At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by:
1)
Verifying the contair.ed borated water volume and nitrogen cover pressure in the tanks, and 2)
Verifying that each cold leg injection accumulator isolation valve is open.
b.
At least once per 31 days and within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> after each solution volume increase of greater than or equal to 1% of tank volume not resulting from normal makeup by verifying the boron concentration of the accumulator solution; and c.
At least once per 31 days when the RCS pressure is above 2000 psig by verifying that power to the isolation valve operator is disconnected,ty r ;rsal of th: br;;kcc from the circuit.
- 4. 5.1.1. 2 Each cold leg injection accumulator water level and pressure channel shall be demonstrated OPERABLE:
a.
At least once per 31 days by the performance of an ANALOG CHANNEL OPERATIONAL TEST, and b.
At least once per 18 months by the performance of a CHANNEL CALIBRATION.
McGUIRE - UNITS 1 and 2 3/4 5-2 Amendment No.
(Unit 1)
Amendment No.
(Unit 2)
EMERGENCY CORE COOLING SYSTEMS LIMITING CONDITION FOR OPERATION (Continued) 3)
The volume weighted average boron concentration of the three limiting accumulators 1500 ppm or less, return the volume weighted average boron concentration of the three limiting accumulator to greater than 1500 ppm and enter ACTION c.2 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> of the low boron determination or be in HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and reduce pressurizer pressure to less than 1000 psig within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
SURVEILLANCE REQUIREMENTS 4.5.1.2.1 Each cold leg injection accumulator shall be demonstrated OPERABLE:
a.
At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by:
1)
Verifying the contained borated water volume and nitrogen cover pressure in the tanks, and 2)
Verifying that each cold leg injection accumulator isolation valve is open.
b.
At least once per 31 days and within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> after each solution volume increase of greater than or equal to 1% of tank volume not resulting from normal makeup by verifying the boron concentration of the accumulator solution; and At least once per 31 days when the RCS pressure is above 2000 psig c.
by verifying that power to the isolation valve operator is disconnected by ea=^"e! ef the brc;kcr frc; th; ci cuit.
1 4.5.1.2.2 Each cold leg injection accumulator water level and pressure channel shall be demonstrated OPERABLE:
At least once per 31 days by the performance of an ANALOG CHANNEL a.
OPERATIONAL TEST, and b.
At least once per 18 months by the performance of a CHANNEL CALIBRATION.
McGUIRE - UNITS 1 and 2 3/4 5-2b Amendment No.
(Unit 1)
Amendment No.
(Unit 2) l k
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ATTACHMENT 2 JUSTIFICATION AND SAFETY ANALYSIS l
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JUSTIFICATION AND SAFETY ANALYSIS i
The proposed change to Specifications 4.5.1.1.1c and 4.5.1.2.lc are to allow the implementation of planned modifications due to the Control Room Design Review /-
Human Engineering Deficiency program. The modification, required by NRC, already implemented on Unit I and planned for the 1987 Unit 2 re fueling outage, will install a power disconnect switch on the control board for the cold leg
. accumulator. discharge isolation valves. Presently, the Specifications specify that the power is to be verified removed from the isolation valve operators by i
removal of the breaker from the circuit. The installation of the modification will make this an unnecessary step as the operators will be able to remove power and verify that power is removed from the control board without physically removing the breaker from the circuit.
In accordance with the requirements of 10 CFR 50.91, following is an analysis to support the conclusion that the proposed amendments do not involve a significant hazards consideration as defined by 10 CFR 50.92:
The proposed change would not involve a significant increase in the probability or consequences of an accident previously evaluated. The change would allow opera-tors an alternative means of ensuring the operability of the cold leg accumula-tors. The proposed change would not create the possibility of a new or different kind of accident from any accident previously evaluated. The only hardware change is to allow operators an alternative means of carrying out a surveillance that is presently required to ensure safety system operability.
The proposed change would i
not involve a significant reduction in a margin of safety. The change would allow an alternate means for meeting a required surveillance and would not affect any safety margins.
l Based upon the preceding, Duke Power Company concludes that the proposed amend-I ments do not involve a significant hazards consideration as defined by 10 CFR 50.92.
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