ML20246B010
| ML20246B010 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah |
| Issue date: | 05/01/1989 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20246B013 | List: |
| References | |
| NUDOCS 8905080388 | |
| Download: ML20246B010 (7) | |
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1 1
REACTOR COOLANT SYSTEM RELIEF VALVES - OPERATING l
LIMITING CONDITION FOR OPERATION
{
3.4.3.2' All power operated relief valves (PORVs) and their associated block valves shall be OPERABLE.
I APPLICABILITY:
MODES 1, 2, and 3.
{
ACTION:
a.
With one or more PORV(s) inoperable, but capable of RCS pressure control, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> either restore the PORV(s) to OPER-ABLE status or close the associated block valve (s); otherwise, 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 in COLD SHUTOOWN within the follow bg 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
b.
With one PORV inoperable and incapable of RCS pressure control, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> either restore the PORV to OPERABLE status or close the associated block valve and remove power from the block valve; restore the PORV.to OPERABLE status within the following 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> 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 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 />.
i c.
-With both PORVs inoperable and incapable of RCS pressure control, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> either restore each of the PORVs to OPERABLE status or close their associated block valves and remove power from the block valves'and 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 COLO SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
d.
With one or more block valve (s) inoperable, within 1 hour:
(-
(1) restore the block valve (s) to OPERABLE status, or close the block valve (s) and remove power from th.e block valve (s), or close the PORV(s) and remove power from its associated solenoid valve (s);
and (2) apply the ACTION b. or c. above, as appropriate, for the isolated PORV(s).
e.
The provisions of Specification 3.0.4 are not applicable.
SURVEILLANCE REQUIREMENTS