ML033390069
| ML033390069 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah |
| Issue date: | 12/01/2003 |
| From: | NRC/NRR/DLPM |
| To: | |
| Chernoff, M H, NRR/DLPM, 301-415-4041 | |
| References | |
| TAC MB8000, TAC MB8001 | |
| Download: ML033390069 (2) | |
Text
3/4.5 EMERGENCY CORE COOLING SYSTEMS (ECCS) 3/4.5.1 ACCUMULATORS COLD LEG INJECTION ACCUMULATORS LIMITING CONDITION FOR OPERATION 3.5.1.1 Each cold leg injection accumulator shall be OPERABLE with:
- a.
The isolation valve open,
- b.
A contained borated water volume of between 7615 and 7960 gallons of borated water,
- c.
A boron concentration in accordance with the requirements below, Number of TPBARs#
0 1-250 251-500 501-1000 1001-2256 Minimum Boron 2400 ppm 2700 ppm 2900 ppm 3200 ppm 3500 ppm Maximum Boron 3800 ppm 3800 ppm 3800 ppm 3800 ppm 3800 ppm
- d.
A nitrogen cover-pressure of between 624 and 668 psig, and
- e.
Power removed from isolation valve when RCS pressure is above 2000 psig.
APPLICABILITY: MODES 1, 2 and 3.*
ACTION:
- a.
With one cold leg injection accumulator inoperable, except as a result of boron concentration not within limits, restore the inoperable accumulator to OPERABLE status within one hour or be in at least 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 1000 psig or less within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
- b.
With one cold leg injection accumulator inoperable due to the boron concentration not within limits, restore boron concentration to within limits within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least 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 1000 psig or less within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
- Pressurizer pressure above 1000 psig.
- The number of TPBARs in the reactor core is contained in the COLR for each fuel cycle.
I SEQUOYAH - UNIT 1 3/4 5-1 Amendment No. 124,140, 147,192, 262,278, 289
EMERGENCY CORE COOLING SYSTEMS (ECCS) 3/4.5.5 REFUELING WATER STORAGE TANK LIMITING CONDITION FOR OPERATION 3.5.5 The refueling water storage tank (RWST) shall be OPERABLE with:
- a.
A contained borated water volume of between 370,000 and 375,000 gallons,
- b.
A boron concentration in accordance with the requirements below, Number of TPBARs#
2500 ppm 3800 ppm 1-250 2800 ppm 3800 ppm 251-500 3000 ppm 3800 ppm 501-1000 3300 ppm 3800 ppm 1001 -2256 3600 ppm 3800 ppm
- c.
A minimum solution temperature of 600F, and
- d.
A maximum solution temperature of 1050F.
APPLICABILITY: MODES 1, 2, 3 and 4.
ACTION:
With the RWST inoperable, restore the tank to OPERABLE status within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or be in at least HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE REQUIREMENTS 4.5.5 The RWST shall be demonstrated OPERABLE:
- a.
At least once per 7 days by
- 1.
Verifying the contained borated water volume in the tank, and
- 2.
Verifying the boron concentration of the water.
- b.
At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying the RWST temperature.
The number of TPBARs in the reactor core is contained in the COLR for each fuel cycle.
SEQUOYAH - UNIT 1 3/4 5-11 Amendment No. 12, 140, 278, 2 89