ML13331B142

Proposed Tech Specs Re Emergency Power Sys Periodic Testing

ML13331B142
Person / Time
Site:	San Onofre
Issue date:	03/04/1989
From:	SOUTHERN CALIFORNIA EDISON CO.
To:
Shared Package
ML13331B141	List: ML13331B140 ML13331B142
References
NUDOCS 8903130098
Download: ML13331B142 (5)

Text

Attachment 2 Proposed Technical Specifications 8903:130098 890304 PDR ADOCK 05000206 P

PDC

4.4 -EMERGENCY POWER SYSTEM PERIODIC TESTING APPLICABILITY:

Applies to testing of the Emergency Power System.

OBJECTIVE:

To verify that the Emergency Power System will respond promptly and properly when required.

SPECIFICATION:

A. The required offsite circuits shall be determined OPERABLE at least once per 7 days by verifying correct breaker alignments and power availability.

B. The required diesel generators shall be demonstrated OPERABLE:

1. At least once per 31 days on a STAGGERED TEST BASIS by:

a. Verifying the diesel performs a DG SLOW START from standby conditions,

b. Verifying a fuel transfer pump can be started and transfers fuel from the storage system to the day

tank,

c. Verifying the diesel generator is synchronized and running at 4500 kW +/- 5% for > 60 minutes, to include a brief load increase to 5250 kN +/- 5%,

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

buses,

e. Verifying the day tank contains a minimum of 290 gallons of fuel, and

f. Verifying the fuel storage tank contains a minimum of 37,500 gallons of fuel.

2. At least once per 3 months by verifying that a sample of diesel fuel from the required fuel storage tanks is within the acceptable limits as specified by the supplier when checked for viscosity, water and sediment.

C. AC Distribution

1. The required buses specified in Technical Specification 3.7, Auxiliary Electrical Supply, shall be determined OPERABLE and energized from AC sources other than the diesel generators with tie breakers open between redundant buses at least once per 7 days by verifying correct breaker alignment and power availability.

SAN ONOFRE - UNIT 1 4-51

D. The required DC power sources specified in Technical Specification 3.7 shall meet the following:

1. Each DC Bus train shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and power availability.

2. Each 125 volt battery bank and charger shall be demonstrated OPERABLE:

a. At least once per 7 days by verifying that:

(1) The parameters in Table 4.4-1 meet the Category A limits, and (2) The total battery terminal voltage is greater than or equal to 129 volts on float charge.

b. At least once per 92 days and within 7 days after a battery discharge with battery terminal voltage below 110 volts, or battery overcharge with battery terminal voltage above 150 volts, by verifying that:

(1) The parameters in Table 4.4-1 meet the Category B limits, (2) There is no visible corrosion at either terminals or connectors, or the connection resistancq of these items is less than 150 x 10-o ohms, and (3) The average electrolyte temperature of ten connected cells is above 61*F for battery banks associated with DC Bus No. I and DC Bus No. 2 and above 48*F for the UPS battery bank.

c. At least once per 18 months by verifying that:

(1) The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration, (2) The cell-to-cell and terminal connections are clean, tight and coated with anticorrosion material, (3) The resistance of each cell-to-cell and terminal 5onnection is less than or equal to 150 x 10-0 ohms, SAN ONOFRE - UNIT 1 4-52

(4) The battery charger for 125 volt DC Bus No. 1 will supply at least 800 amps DC at 130 volts DC for at least 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, (5) The battery charger for 125 volt DC Bus No. 2 will supply at least 45 amps DC at 130 volts DC for at least 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, and (6) The battery charger for the UPS will supply at least 10 amps AC at 480 volts AC for at least 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> as measured at the output of the UPS invertor.

d. At least once per 18 months, during shutdown, by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status all of the actual or simulated emergency loads for the design duty cycle when the battery is subjected to a battery service test.

e. At least once per 60 months, during shutdown, by verifying that the battery capacity is at least 80%, 85% for Battery Bank No. 1, of the manufacturer's rating when subjected to a performance discharge test. Once per 60 month interval, this performance discharge test may be performed in lieu of the battery service test required by Surveillance Requirement 4.4.D.2.d.

f. Annual performance discharge tests of battery capacity shall be given to any battery that shows signs of degradation or has reached 85% of the service life expected for the application.

Degradation is indicated when the battery capacity drops more than 10% of rated capacity from its average on previous performance tests, or is below 90% of the manufacturer's rating.

E. The required Safety Injection System Load Sequencer shall be demonstrated OPERABLE at least once per 31 days on a staggered test basis, by simulating SISLOP* conditions and verifying that the resulting interval between each load group is within +/- 10% of its design interval.

F. The required diesel generators and the Safety Injection System Load Sequencer shall be demonstrated OPERABLE.at 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.

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2. Simulating SISLOP*, and:

a. Verifying operation of circuitry which locks out non-critical equipment,

b. Verifying the diesel performs a DG FAST START from standby condition on the auto-start signal, energizes the emergency buses with permanently connected loads and the auto connected emergency loads ** through the load sequencer (with the exception of the feedwater, safety injection, charging, and refueling water pumps whose respective breakers may be racked-out to the test position) and operates for > 5 minutes while its generator is loaded with the emergency

loads,

c. Verifying that on the safety injection actuation signal, all diesel generator trips, except engine overspeed and generator differential, are automatically bypassed.

3. Verifying the generator capability to reject a load of 4,000 kW without tripping. The generator voltage shall not exceed 4,800 volts during and following the load rejection.

SISLOP is the signal generated by coincident loss of offsite power (loss of voltage on Buses 1C and 2C) and demand for safety injection.

The sum of all loads on the engine shall not exceed 5,250 kW + 5%.

San Onofre - Unit 1 4-54