ML17254B001

Revised Page 3.7-2a of Proposed Tech Spec Re Arrangement of Electrical Equipment So No Single Contingency Can Inactivate Enough Safeguards Equipment to Jeopardize Plant Safety

ML17254B001
Person / Time
Site:	Ginna
Issue date:	10/26/1984
From:	ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17254B000	List: ML17254A999 ML17254B001
References
NUDOCS 8410300020
Download: ML17254B001 (2)

Text

battery bank. Operation in this mode may continue for a period of no more than 7 days.

If neither 1. or 2. above are satisfied then be in at least hot shutdown within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and 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 />.

d. With less than 150 amps of battery charging capacity to one d.c. system, either restore 150 amps of charging capacity within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or declare the battery bank inoperable.

3.7.3 With the reactor at cold shutdown or during refueling:

a. A 34.5KV-4160 volt station auxiliary transformer (12A or 12B) shall be in service with 4160 volt buses 12A and 12B energized.

b. One diesel generator shall be operable with onsite supply of 5,000 gallons of fuel available.

c. Two d.c. systems and associated battery banks shall be operable each with 150 amps of battery charging capacity available. The Technical Support Center battery bank and charger may be used to satisfy this requirement provided the output voltage is greater than 125 volts.

3.7.4 If the requirements of 3.7.3 cannot be satisfied then immediately suspend all operations involving positive reactivity changes, core alteration, and movement of irradiated fuel, and immediately initiate corrective action to restore the required power sources to operable status.

Basis The electrical system equipment is arranged so that no single contingency can inactivate enough safeguards equipment to jeopardize the plant safety. The 480-volt equipment is arranged Proposed 8410300020 84102b 307 2a

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