ML20216B147

Proposed Tech Specs,Allowing Plant to Continue to Operate W/O Having to Perform Portions of SRs

ML20216B147
Person / Time
Site:	Comanche Peak
Issue date:	04/06/1998
From:	TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20216B138	List: ML20216B132 ML20216B147
References
NUDOCS 9804130379
Download: ML20216B147 (1)

Text

l Attach et' ' to TXX 98100 Page 1 of 1 ELECTRICAL POWER SYSTEMS SURVEILLANCE RE0VIREMENTS (Continued)

4) Simulating a loss of offsite power by itself, and#:

4 a) Verifying deenergization of the emergency busses and load shedding from the emergency busses, and b) Verifying the diesel starts on the auto start signal, energizes the emergency busses with permanently connected loads within 10 seconds, energizes the auto connected shut-down loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the shutdown loads. After energization, the steady state voltage and frequency of the emergency busses shall be maintained at 6900 1 690 volts and 60 1 1.2 Hz during this test.

5) Verifying that on a Safety Injection Actuation test signal, without loss of offsite power, the diesel generator starts on the auto start signal and operates on standb> for greater than or equal to 5 minutes. The generator voltage and frequency shall be 6900 1 690 volts and 60 1 1.2 Hz within 10 seconds after the auto start signal: the steady-state generator voltage and frequency shall be maintained within these limits during this test:

6) Simulating a loss of offsite power in conjunction with a Safety Injection Actuation test signal, and#:

a) Verifying deenergization of the emergency busses and load shedding from the emergency busses:

b) Verifying the diesel starts on the auto start signal, energizes the emergency busses with permanently connected loads within 10 seconds, energizes the auto connected emergency (accident) loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads. After energization, the steady state voltage and frequency of the emergency busses shall be maintained at 6900 1 690 volts and 60 1 1.2 Hz during this test; and c) Verifying that all automatic diesel generator trips, except engine overspeed and generator differential, are automatically bypassed upon loss of voltage on the emergency bus concurrent with a Safety Injection Actuation signal.

7) Verifying the diesel generator operates for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the diesel generator f;0nta onettime basissthelverification oflthe proper

• operation 1of1thelUnit:2;1oad shed;sealiin contactsTanditheLDiesel;Generatoritrip;bypassfcontacts may;be performed atlpower cand ? the : veri fication of: the : proper; operation of: the: Uni t 211 ockout; rel ays and ; contacts : may be ideferred ; unt11 c the r startup from ' 2RF047 or earl i erg outagelof suf f1cient;durati.onho; properly;schedul e;and; per form; t he; te st ;

9804130379 980406' 3/4 8 6 PDR ADOCK 05000446 P PDR i