ML17328A858

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Proposed Tech Specs,Modifying Requirements for Differential Acceptance Test for Dc Bus Trains During 92-day Surveillance
ML17328A858
Person / Time
Site: Cook  American Electric Power icon.png
Issue date: 01/15/1991
From:
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML17328A857 List:
References
AEP:NRC:1142, NUDOCS 9101180296
Download: ML17328A858 (8)


Text

ATTACHMENT 2 TO AEP:NRC:1142 PROPOSED CHANGE,"

) THE DONALD C.

COOK NUCLEAR PLANT UNIT NOS. qS D 2 TECHNICAL SPECIFICATIONS c

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ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS Continued 2.

Verifying the generator capability to reject a load greater than or equal to 600 kw while maintaining steady state voltage at 4160 + 420 volts and steady state frequency at 60 + 1.2 Hz, Verifying the generator capability to reject a load of 3500 kw without exceeding 75%

of the difference between nominal speed and the overspeed trip setpoint, 4,

Simulating a loss of offsite power by itself, and:

a)

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

busses, 5.

b)

Verifying that the diesel starts on the auto-start

signal, energizes the emergency busses with permanently connected loads within 10
seconds, energizes the auto-connected shutdown loads through the load sequencer and operates for greater than or equal to 5

minutes while its generator is loaded with the shutdown loads.

After load sequencing is completed, the steady state voltage and frequency of the emergency busses shall be maintained at 4160 + 420 volts and 60 + 1.2 Hz during the test.

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.

Simulating a loss of offsite power in conjunction with a

Safety Injection actuation test signal, and by:

a)

Verifying de-energization 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 the load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads.

After load sequencing is completed, the steady state voltage and frequency of the emergency busses shall be 4160 + 420 volts and 60 + 1.2 Hz.

The voltage and frequency shall be maintained within these limits for the remainder of this test, and COOK NUCLEAR PLANT - UNIT 1 3/4 8-5 AMENDMENT NO.

ELECTRICAL'POWER SYSTEMS SURVEILLANCE RE UIREMENTS Continued 2.

0 The pilot cell specific gravity, corrected to 77 F, and full electrolyte level (fluid at the bottom of the maximum level indication mark), is greater than or equal to 1.200, 3.

The pilot cell voltage is greater than or equal to 2.13

volts, and 4.

The overall battery voltage is greater than or equal to 250 volts.

b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is greater than or equal to 2.13 volts under float charge.

2.

The specific gravity, corrected to 77 F, and full electrolyte 0

level (fluid at the bottom of the maximum level indication mark), of each connected cell is greater than or equal to 1.200 and has not decreased more than 0.03 from the value observed during the previous test, and 3.

The electrolyte level of each connected cell is between the top of the minimum level indication mark and the bottom of the maximum level indication mark.

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, free of corrosion and coated with anti-corrosion material, 3.

The battery charger will supply at least 140 amperes at greater than or equal to 250 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

d.

At least once per 18 months, perform a battery service test during shutdown (MODES 5 or 6), by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status the actual or simulated emergency loads for the times specified in Table 4'-2 with the battery charger disconnected.

The battery terminal voltage shall be maintained greater than or equal to 210 volts throughout this test.

COOK NUCLEAR PLANT - UNIT 1 3/4 8-13 AMENDMENT NO.

ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS Continued 3.

The pilot cell voltage is greater than or equal to 2.13

volts, and 4.

The overall battery voltage is greater than or equal to 250 volts.

b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is greater than or equal to 2.13 volts under float charge.

2

~

The specific gravity, corrected to 77 F and full electrolyte 0

level (fluid at the bottom of the maximum level indication mark), of each connected cell is greater than or equal to 1.200 and has not decreased more than 0.03 from the value observed during the previous test, and 3.

The electrolyte level of each connected cell is between the top'f the minimum level indication mark and the bottom of the maximum level indication mark.

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, free of corrosion and coated with anti-corrosion material.

I 3.

The battery charger will supply at least 10 amperes at greater than or equal to 250 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

At least once per 18 months perform a battery service test, during shutdown (MODES 5 or 6), by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status the actual or simulated emergency loads for the times specified of Table 4.8-3 with the battery charger disconnected.

The battery terminal voltage shall be maintained greater than or equal to 210 volts throughout the battery service test.

e.

At least once per 60 months perform a battery discharge test during shutdown (MODES 5 or 6), by verifying that the battery capacity is at least 80% of the manufacturer's rating.

This performance discharge test shall be performed in place of the battery service test.

COOK NUCLEAR PLANT - UNIT 1 3/4 8-18 AMENDMENT NO.

ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS Continued Verifying the generator capability to reject a load greater than or equal to 600 kw while maintaining steady state voltage at 4160 + 420 volts and steady state frequency at 60

+ 1.2 Hz, 3.

Verifying the generator capability to reject a load of 3500 kw without exceeding 758 of the difference between nominal speed and the overspeed trip setpoint, 4.

Simulating a loss of offsite power by itself, and:

a)

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

busses, b)

Verifying that the diesel starts on the auto-start

signal, energizes the emergency busses with permanently connected loads within 10 seconds, energizes the auto-connected shutdown loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the shutdown loads.

After load sequencing is completed, the steady state voltage and frequency of the emergency busses shall be maintained at 4160 + 420 volts and 60 + 1.2 Hz during the test.

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.

Simulating a loss of offsite power in conjunction with a Safety Injection actuation test signal, and by:

a)

Verifying de-energization 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 the load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads.

After load sequencing is completed, the steady state voltage and frequency of the emergency busses shall be 4160 + 420 volts and 60 + 1.2 Hz.

The voltage and frequency shall be maintained within these limits for the remainder of this test, and COOK NUCLEAR PLANT - UNIT 2 3/4 8-5 AMENDMENT NO.

ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS Continued 2.

The pilot cell specific gravity, corrected to 77 F, and full 0

electrolyte level (fluid at the bottom of the maximum level indication mark), is greater than or equal to 1.200, 3.

The pilot cell voltage i.s greater than or equal to 2.13 volts, and 4.

The overall battery voltage is greater than or equal to 250 volts.

b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is greater than or equal to 2.13 volts under float charge.

2.

The specific gravity, corrected to 77 F, and full electrolyte 0

level (fluid at the bottom of the maximum level indication mark), of each connected cell is greater than or equal to 1.200 and has not decreased more than 0.03 from the value observed during the previous test, and 3.

The electrolyte level of each connected cell is between the top of the minimum level indication mark and the bottom of the maximum level indication mark.

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, free of corrosion and coated with anti-corrosion material, 3.

The battery charger will supply at least 140 amperes at greater than or equal to 250 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

At least once per 18 months, perform a battery service test during shutdown (MODES 5 or 6), by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status the actual or simulated emergency loads for the times specified in Table 4.8-2 with the battery charger disconnected.

The battery terminal voltage shall be maintained greater than or equal to 210 volts throughout this test.

COOK NUCLEAR PLANT - UNIT 2 3/4 8-13 AMENDMENT NO.

ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS Continued 3.

The pilot cell voltage is greater than or equal to 2.13

volts, and 4.

The overall battery voltage is greater than or equal to 250 volts.

b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is greater than or equal to 2.13 volts under float charge.

2.

The specific gravity, corrected to 77 F and full electrolyte 0

level (fluid at the bottom of the maximum level indication mark), of each connected cell is greater than or equal to 1.200 and has not decreased more than 0.03 from the value observed during the previous test, and 3.

The electrolyte level of each connected cell is between the top of the minimum level indication mark and the bottom of the maximum level indication mark.

c.

At least once per 18 months by verifying that:

The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration.

The cell-to-cell and terminal connections are clean, tight, free of corrosion and coated with anti-corrosion material.

3.

The battery charger will supply at least 10 amperes at greater than or equal to 250 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

d.

At least once per 18 months perform a battery service test, during shutdown (MODES 5 or 6), by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status the actual or simulated emergency loads for the times specified of Table 4.8-3 with the battery charger disconnected.

The battery terminal voltage shall be maintained greater than or equal to 210 volts throughout the battery service test.

e.

At least once per 60 months perform a battery discharge test during shutdown (MODES 5 or 6), by verifying that the battery capacity is at least 80$ of the manufacturer's rating.

This performance discharge test shall be performed in place of the battery service test.

COOK NUCLEAR PLANT - UNIT 2 3/4 8-18 AMENDMENT NO ~