ML20216D602

Proposed Tech Specs Temporarily Removing Requirement to Demonstrate Load Shedding Feature of MCC XEB4-3 as Part of SRs 4.8.1.1.2f.4)a) & 4.8.1.1.2f.6)a),for Unit 2 Only

ML20216D602
Person / Time
Site:	Comanche Peak
Issue date:	03/09/1998
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20216D590	List: ML20216D584 ML20216D602
References
NUDOCS 9803170151
Download: ML20216D602 (2)

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j ATTACHMENT 3 to TXX 98066 AFFECTED TECHNICAL SPECIFICATION PAGES (TS 4.8.1.1.2f.4)a) and 4.8.1.1.2f.6)a))

9803170151 980309 TI PDR ADOCK 05000445 i

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Attachment'3 to'TXX-98066

-Page 1 of 1 ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 4)

Simulating a oss-of offsite power by itself, and:

a)

Verify 1ng deenergization of the emergency busses and load shedding from the emergency Lussest, and 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 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. Aft?r energization, the steady state voltage and frequency of the emergency busses shall be maintained at 6900 1 690 volts and 60 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 shedding from tne emergency busses:g 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 engine overspeed and generator differential, are dutomatically 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 Wwsrumwwweepy} shedding sfeature f off MCC 2 XE84?3; forg UnitI251 s :notgequi re wqgggggggggm?ggggggggggggg EThertettingeof6thekload untMIthe(startupKsubsequentltoI2RF04:orithelnexti. Units 2ioutagelgreaternthan124 Q poutsMANutatjenfggnia;ggfErndfhg5GggIS3M;;gngsgMM 3/4 8 6