ML19344A675

Proposed Tech Spec,Section 4.8.1.1.2.c.2 Clarifying Emergency Diesel Generator Load Block Application Timing Criteria

ML19344A675
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/12/1980
From:	ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML19344A672	List: ML19344A671 ML19344A675
References
NUDOCS 8008210434
Download: ML19344A675 (2)

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ELECTRICAL POWER SYSTEM

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SURVEILLANCE REQUIREMENTS (Continued)

3. Verifying the fuel transfer pump can be started and transfers fuel from the storagt. system to the day tank.

4. Verifying the diesel starts from ambient condition and accelerates to at least 900 rpm in < 15 seconds.

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5. Verifying the generator is synchronized, loaded to 2850 Kw in < 60 seconds, and operates for > 60 minutes.

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6. Verifying the diesel generator is aligned to provide standby power to the associated emergency busses.

b. At least once per 92 days by verifying that a sample of diesel fuel from the fuel storage tank obtained in accordance with ASTM-D270-65, is within the acceptable limits specified in Table 1 of ASTM D975-74 when checked for viscosity, water and sediment.

c. A+ least once per 18 months during shutdown by:

1. Subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturer's recommendations for this class of standby service.

2. Verifying that the automatic sequence time delay relays are OPERABLE with component time delay relay settings

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as specified in table 4.8-2.

3. Verifying the generator capability to reject a load of

> 596 kw and maintain voltage at 4160 1 500 volts and frequency at 6013 Hz.

4. Verifying the generator capability to reject a load of 2850 Kw without exceeding 75% of the di fference between nominal speed and the overspeed trip setpoint, or 15%

above nominal, whichever is lower.

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5. Simulating a loss of offsite power by itself, and:

a) Verifying de-energization of the emergency busses and load shedding from the emergency busses.

ARKANSAS - UNIT 2 3/4 8-3 fr68D-/ o 43

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TABLE 4.8-2 TIME DELAY RELAY SETTING COMP 0NENT (SECONDS) ._

Service Water Pumps 5 1 0.5 H.P.S.I. Pumps 10 1 1.0 L.P.S.I. Pumps- 1511.5 Containment Cooling Fans 20 1 Containment Spray Pumps 25 1 25 Charging Pumps (A&B) 50 1 5.0 8 0 Charging Pump (C) 601 _

Emergency Feedwater Pump (Diesel #1 only)901 13'.