ML20217A390

Proposed Tech Specs Surveillance Requirements 4.8.1.1.2f.4)a) & 4.8.1.1.2f.6)a) at Power Re Enforcement Discretion

ML20217A390
Person / Time
Site:	Comanche Peak
Issue date:	03/18/1998
From:	TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20217A387	List: ML20217A384 ML20217A390
References
NUDOCS 9803250027
Download: ML20217A390 (2)

Text

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ATTACHMENT 3 to TXX 98079 AFFECTED TECHNICAL SPECIFICATION PAGES (TS 4.8.1.1.2f.4)a) and 4.8.1.1.2f.6)a))

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' Attachment 3 to TXX-98079 Page 1 of 1 ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

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

a) Verifying deenergization of the emergency busses and load shedding ***, froin 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 saquencer 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 standby 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 I shedding **_* from the emergency busses: l 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 i 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 ynmmn ,- n ,

• • • On .a,onex time basisuthe; verification (that load . shedding, occurs as=a result:ofi the'deenergitationtof the?

t emergency; busses'.mayibe performed t at;poweriforffuel: ,

cycl ei63n; Uni ty and ifuel; cycl e 1on; Uni t12 ;

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