ML17251A241

Proposed Tech Spec Changes Per 880622 Telcon Re New Requirements for Operation & Testing of Reactor Trip Breakers

ML17251A241
Person / Time
Site:	Ginna
Issue date:	08/26/1988
From:	ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17251A240	List: ML17251A239 ML17251A241
References
NUDOCS 8809010110
Download: ML17251A241 (4)

Text

12. With the number of operable channels less than the Total Number of Channels, operation may proceed provided the inoperable channel is placed in the tripped condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. Should the next Channel Functional Test require the bypass of an inoperable channel to avoid the generation of an actuation signal, operation may proceed until this Channel Functional Test. At the time of this Channel Functional Test, or if at any time the number of operable channels is less than the Minimum Operable Channels required, be at hot shutdown within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and at an RCS temperature less than 350 F within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

13. With the number of operable channels less than the Minimum Operable Channels required, operation may continue provided the containment purge and exhaust valves are maintained closed.

14. Should one reactor trip breaker or channel of trip logic be inoperable the "plant must not be in the operating mode following' siz hour time period, and the breaker must be open.

If one features of the diverse reactor trip breaker trip (undervoltage or shunt trip attachment) on one breaker is inoperable, restore it to operable status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or declare breaker inoperable. If at the end of the 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> period one trip feature is inoperable it must be repaired or the plant must not be in the operating mode, and the reactor trip breaker must be open, following an additional siz hour time period.

The breaker shall not be bypassed while one of the diverse trip features is inoperable except for the time required for performing maintenance to restore the breaker to operable status.

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Amendment No. gA 3.5-15 Proposed.

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TABLE 3. 5-1 Continued PROTECTION SYSTEM INSTRUMENTATION '

5 OPERATOR ACTION TOTAL NO. of MIN. PERMISSIBLE IF CONDITIONS OF NO. of CHANNELS OPERABLE BYPASS COLUMN 1 OR 3 NO. FUNCTIONAL UNIT CHANNELS TO TRIP CHANNELS CONDITIONS CANNOT BE MET

19. Degraded Voltage 2/bus 2/bus 1/bus T~~ = 350 F 480V Safeguards Bus

20. Automatic Trip Logic Note 4 14 Note 5

! Including Reactor Trip Breakers NOTE 1: When block condition exists, maintain normal operation.

NOTE 2= Channels should be operable at all modes below the bypass condition with the reactor trip system breakers in the closed position and control rod drive system capable of rod withdrawal.

NOTE 3: Channels shall be operable at all modes below the bypass condition except during refueling defined to,be when fuel is in the reactor vessel with the vessel head closure bolts less than fully tensioned or with the head removed.

NOTE 4: One reactor trip breaker may be bypassed for surveillance testing provided the other reactor trip breaker is operable.

NOTE 5: Channels shall be operable at all modes above refueling when the control rod drive system is capable of rod withdrawal unless both reactor trip breakers are open.

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