ML20248L319

Proposed Tech Specs TS 4.8.1.1.2f.4)b) & TS 4.8.1.1.2f.6)b) Re Request for Enforcement Discretion

ML20248L319
Person / Time
Site:	Comanche Peak
Issue date:	03/12/1998
From:	TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20248L317	List: ML20248L316 ML20248L319
References
NUDOCS 9803190318
Download: ML20248L319 (2)

Text

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l-ATTACHMENT 3 to TXX 98076 AFFECTED TECHNICAL SPECIFICATION PAGES (TS 4.8.1.1.2f.4)b) and 4.8.1.1.2f.6)b))

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' Attech=nt 3 tu fXX 98076 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 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

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greater than or equal to 5 minutes while its generator is loaded with the shutdown loads. After energization, the steady etate voltage and frequency of the emergency busses shall N maintained at 6900 1 690 volts and 60 1 1.2 Hz durins i.nis test.

5)

Verifying that on a Safety Injectior 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 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 l 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 7, w m.,

• • 0n.:.a one time basise the? verification of;th's aisto connect'ed shut-downsloads c

throughLthe load sequencer may,be; performed at: power for.fue11 cycle 6 on: Unit 1 and 79elscyclel4;on Unit:2; 3/4 8 6

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