ML17285A135

Proposed Tech Spec,Revising Surveillance 4.8.1.1.2.e.7 to Be Consistent W/Design of Automatic Bypass Function of Diesel Generator Trips

ML17285A135
Person / Time
Site:	Columbia
Issue date:	12/02/1988
From:	WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:
Shared Package
ML17285A134	List: ML17285A132 ML17285A135
References
TAC-71390, NUDOCS 8812200188
Download: ML17285A135 (1)

Text

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" ELECTRICAI POWER SYSTEMS.

SURVEILLANCE RE UIREHENTS Continued

'or 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 4160 t 420 volts and 60 2 3.0 Hz during this test.

b) For division 3:

1) Verifying deener gization of the emergency bus.

2) Verifying the diesel generator starts on the auto-start signal, energizes the emergency bus with the permanently connected loads and the auto-connected emergency loads within 30 seconds and operates for greater than or equal to 5 minutes while its generator is loaded with th~ergency loads. After energization, .the steady sta~ ltage be ma and frequency'of the emergency bus shall ined at 4160 + 420 volts and 60 + 3.0 Hz during test.

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7. Verifying that all atic diesel genera o reps are automatically bypass u on an actuation signal exceptqgg~i~~.

ngine overspeed and generator differential current,'ncomplete starting sequence and emergency manual stop.

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8. 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 shall be loaded to greater than or equal to 4650 kW for DG-1

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and OG-2 and 2850 kW for DG-3. During the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of this test, the diesel generator shall be loaded to 4400 kM for DG-1 and DG-2 and 2600 kW for DG-3. The generator voltage

~O and frequency shall be 4160 (+420, -250) volts for DG-1 and DG-2, tQN mo 4160.1 420 volts for OG-3 and 60 a 3.0 Hz within 10 seconds for LO+ DG"1 and OG-2 and 13 seconds, for OG-3 after the start signal; Clu the steady-state generator voltage and frequency shall be main-C)A tained within 4160 k 420 volts and the above frequency limit 0/ during this test.

Within 5 minutes after completing this 24-hour test, per form Surveillance Requirement 4.8.1.1.2. e.4. a)2) and b)2)."

"If Surveillance Requirements 4.8.1.1.2.e;4.a)2) and/or b)2) are not satis" factorily completed, it is not necessary to repeat the preceding 24-hour test. Instead, the diesel generator may be operated at 4400 kW for DG-1 or OG-2 or 2600 kW for DG"3 for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or until operating temperature has stabilized.

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WASHINGTON NUCLEAR " UNIT 2 3/4 8"6'mendment No. 19