ML20011B243

Corrected Tech Spec 4.9.A.6 for Limiting Condition for Operation & Surveillance Requirements Re Degraded Sys Voltage

ML20011B243
Person / Time
Site:	Hatch
Issue date:	12/02/1981
From:	GEORGIA POWER CO.
To:
Shared Package
ML20011B242	List: ML20011B241 ML20011B243
References
TAC-11026, TAC-11262, TAC-47044, TAC-47045, TAC-47876, TAC-47877, NUDOCS 8112080180
Download: ML20011B243 (2)

Text

I LIMITING CONDITION FOR OPERATION SURVEILLANCE REQUIREENTS 4.9.A.6 Logic Systems (Continued) 4.9.A.6 Logic Systems (Continued)

a. The common accident signal a. Each division of tne common logic system is operable. accident signal logic system shall be -tested every scheduled refueling outage to demonstrate that it will function on actuation of the core spray system .to provide .an automatic start signal to all 3 diesel generators.

b. The undervoltage relays and b. Once every scheduled refueling supporting system are operable. outage, the conditions under which the undervoltage logic system is required shall 'be simulated with an undervoltage on each start bus to demonstrate that the diesel i

generators will start. The testing of the undervoltage logic-shall demonstrate the operability of the 4160 volt load shedding and 1

auto bus transfer circuits. The simulations shall test both the degraded voltage and the loss of off-site power relays.

c. The common accident signal logic c. Once per operating cycle each system, and undervoltage relays diesel generator shall be de-

, and supporting system are operable. monstrated operable by simulating both a loss of off-site power and i a degraded vc3tage condition in

conjunctiun with an accident test j sical and verifying

~de-energization of the emergency

buses and load shedding from the emergency buses; the diesel starts from ambient condition on the auto-start signal, energizes the emergency buses and sequentially 4 closes all safety load breakers (load breakers in test position)

and that on diesel generator . trip that safety load breakers on the emergency bus open, and that with an auto-start signal the diesel restarts and energizes the emergency buses and sequentially l closes all safety load breakers (load breakers in test position).

The undervoltage relays for the

. start buses shall be calibrated annually for trip and reset voltages and the measurements recorded.

3.9-4

( 8112000100 811202 PDR ADOCK 05000321 P PDR l

LIMITING CONDITION FOR OPERATION SURVEILLANCE REQUIREKNIS 4.9.A.6 Logic Systems (Continued) 4.9.A.6 Logic Systems (Continued)

e. The 600-volt load shedding e. Once every scheduled refueling logic system is operable, outage, the condition under which the 600-volt load shedding logic system is required shall be simulated to demonstrate that the load shedding logic system will initiate lo?d shedding on the diesel auxiliary boards, react MOV boards, and the 600-volt shutdown boards.

f. 600 volt swing bus transfer f. Every two months the swing buses circuitry for MCC S018A and supplying power to the Low Pres-S0188. sure Coolant Injection System valves shall be tested to assure that the transfer circuits operate as designed.

B. Requirements for Continued Operation B. Requirements for Continued Operation With Inoperable Comoonents With Inoperable Components Whenever the reactor is in the Start Continued reactor operation is

& Hot Standby or Run Mode and the pennissible with inoperable com-reactor water temperature is greater ponents in accordance with Speci-than 2120F, the availability of aux- fication 3.9.B provided that the iliary electrical power shall be as following increased Surveillance specified in 3.9. A, except as speci- Requirements are satisfied, fled herein. If the requirements of this Specification cannot be met, an orderly shutdown shall be ini-tlated and the reactor shall be placed in the Cold Shutdown Condi-tion within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

3.9-4a