ML17332A607

Proposed Tech Specs,Revising Train A/B Profiles & Modifying Train N Batteries Profile Request for Mod

ML17332A607
Person / Time
Site:	Cook
Issue date:	02/28/1995
From:	INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML17332A606	List: ML17332A605 ML17332A607
References
NUDOCS 9503080170
Download: ML17332A607 (54)

Text

ATTACHMENT 1 TO AEP:NRC:0896U EXISTING TECHNICAL SPECIFICATION PAGES MARKED TO REFLECT PROPOSED CHANGES 9503080170 950228 PDR ADOCK 05000315 P PDR

ELECTRICAL POWER SYSTEMS SURVEILLANCE REOUIREMENTS Continued

2. 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 .

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 0 F, and full electrolyte 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 betveen 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 batte~ 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 vith anti-corrosion material,

3. The battery charger vill 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'ervice test during shutdown (MODES 5 or 6), by verifying that the battery capacity is adequate to supply and maintain simulated emergency loads for the i OPERABLE status the actual or The battery terminal voltage shall be maintained greate than or equal to 210 volts throughout this test.

design duty cycle which is based on the composite load profile. The composite load profile envelopes both the LOCA/LOOP and Station Blackout profiles and provides the basis for the times listed in Table 4.8-2. The battery charger will be disconnected throughout the tes~

COOK NUCLEAR PLANT - UNIT 1 3/4 8-13 AMENDMENT No. fg 155

'r ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS Continued

e. ths ,perforat-a-'l~attery-t5sc shutdown (MOOES o , verifying that the batter 15 at least 80X of the manufacturer ormance discharge test shal be-p e 1n place of service test

%t least once per 60 months, conduct a performance test of battery capacity during shutdown (MODES 5 or 6), by verifying that thc battery capacity is at least 80% of the manufacturer's rating.

When this test is performed in place of a battery service test, a modified performance test shall be conducted.

Annual performance 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 wheu thc battery capacity drops more than 10% from its capacity on the previous performance test, or is below 90% of the manufacturer's rating. Ifthe battery has reached 85% of service life, delivers a capacity of 100% or greater of the manufacturer's rated capacity, and has shown no signs of degradation, performance testing at two year intervals is acceptable until the battery shows signs of degradation~

D. C COOK - UNIT 1 3/4 8-14 AMENOMENT NO'25

TABLE 4.8-2 BATTERY EMERGENCY LOAOS A~BI<<L d Minimum Time

1. Channel III static inverter 4P'hrs

2. Channel IV static inverter 4f hrs

$ j( &feed pump turbine+ oii pump 1 hr

+p. Control room emergency lighting 4P hrs

$ 8. Hain turbine backup oil pump ( dt hrs Isolation valve control 4P hrs All control circuits 4 jf hrs

~LB II<<L d

1. Channel I static inverter 'ff hrs

2. Channel II static inverter +g hrs

3. BOP static inverter" gg hrs

~<ctdP<

4.'I'eed pump turbine rggoi1 pump 1 hr 5.

g~~

Generator)seal 87HC%6~44 oil pump 4P'rs 6.i'n8urbine emergency oil pump Ig hrs

7. Isolation val ves 4.P hrs

8. Annunci ators gg hrs

9. All control circuits ditj( brs power sources to the inverters shall be turned off at the start of the test and may be turned on at the end of the specified time interval. Inverters may be left in this operating mode for the duration of the discharge test.

D. C. COOK - UNIT 1 3/4 8-15 AMENDMENT NO. 125

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 o F and,full electrolyte 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 botto'm 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 vill 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 ~

during shut 5 or 6), by veri e battery capacity is at least 80% o cturer's rating. This

~

performance e test shall be performe of the

~-WH~W7- ~&7 COOK NUCLEAR PLANT - UNIT 1 3/4 8-18 AHENDMENT NO. P),155

At least ouce per 60 months, conduct a performance test of battery capacity during shutdown (MODES 5 or 6), by veri%ging that the battery capacity is at least 80% of thc manufacturer's rating.

When this test is performed in place of a battery service test, a modified performance test shall be conducted.

Annual pcrformancc tests of battery capacity shall be given to any battery that shows signs of degradation or has reached 85% of thc service life expected for the application. Degradation is indicated when the battery capacity drops more than 10% from its capacity on the previous performance test, or is below 90% of the manufacturer's rating. Ifthe battery has reached 85% of service life, delivers a capacity of 100% or greater of the manufacturer's rated capacity, and has shown no signs of degradation, performance testing at two year intervals is acceptable until the battery shows signs of degradation.

TABLE 4.8-3 BATTERY EMERGENCY LOADS "H" Batter Loads Minimum Time Auxiliary feedwater turbine control bus 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> FMO-211 val ve + ~bouc' FMO-221 valve 4~($

FMO-231 valve c}. p g,~(s FMO-241 valve + )h<uc<

TDTV valye g gars

• Valves will be operated through the following sequence:

Beginning of test: open valves 2.. Five minutes after the beginning ~

he tes't: close the val ves.

~

3. Ten minutes after+A eginning of the test: reopen the valves.

4. Four hou after the beginning of the test: close the valves.

f End o "the test.

D. C. COOK - UNIT 1 3/4 8-19 AMEHDMEHT NO. 125 I

3/4.8 ELECTRICAL POMER SYSTEMS BASES The OPERABILITY of the A.C. and D.C. power sources and associated distribution systems during operation ensures that sufficient power will be available to supply the safety related equipment required for 1) the safe shutdown of the facility and 2) the mitigation and control of accident

'conditions within the facility. The minimum specified independent and redundant A.C. and D.C. power sources and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation. The OPERABILITY of the power sources are consistent with the initial condition assumptions of the accident analyses and are based upon maintaining at least one of each of the onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C. source.

The OPERABILITY of the minimum specified A.C. and D.C. power sources and associated distribution systems during shutdown and refueling ensures that 1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the facility status.

The train N station battery system provides an independent 250 volt DC power supply for power and control of the turbine driven auxiliary feedwater pump train. The limiting conditions of operation for the train N battery are consistent with the requirements of the auxiliary feedwater system. The surveillance requirements for the train N battery system are consistent with the requirements of the AB and CD station batteries. The train N battery loads are derived from equipment in the turbine driven auxiliary feedwater pump train and battery .sizing is consistent with the functional requirements of these components. Simulated loads for battery tests are loads equivalent to measured actual loads.

~The AB and CD station battery systems provide a reliable source of continuous power for supply and control of plant loads such as switchgear 6 annunciator control circuits, static inverters, valve control centers, emergency lighting and motor control centers. The design duty cycles of these batteries are composite load profiles resulting from the combination of the three hour Loss Of the Coolant Accident/Loss Of Offsite Power battery load profiles and four hour Station Blackout battery load profiles.

D C. COOK UNIT 1 B 3/4 8-1 Amendment No. 86 0 02OO0S 00 I 8

E C O SVS S SURVEILLANCE UXREM S Co t ued I

2. The pilot cell specific gravj.ty, corrected to 77 F, and level (fluid at the bottom of the maximum level full'lectrolyte indication mark), is greater than or equal to 1.200,

3. The pilot cell voltage is gxeater than or equal to 2.13 volts, and 4.. The overall battery voltage is greater than or equal to 250 volts.

b. At lease once per 92 days by veri.fying"Chat:

I

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'*e3.:ectrolyte level (fluid at the bottom of the maximum level indication mark), of each connected cell is greater than'r 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 betveen 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 shov'no visual indication of physical damage or abnormal deterioration,

2. The cell-to-cell and terminal connections are clean, tight, free of cox'rosion and coated vith anti-corrosion material,

3. The battery charger vill supply at least 140 amperes at greater than or equal to 250 volts for at least 4'hours.*

d. At least: once per 18 months, perform a battery service test during shutdovn (MODES 5 or 6), by verifying that the batCexy capacity is adequate to supply and maintain. in OPERABLE status the actu'al or simulated emergency loads for Che e battexy terminal voltage shall be mainCained greater Chan or equal to 210 volts throughout this test.*

>design dary cycle which is based on the composite load profite. The composite load profile envelopes both the LOCA/LOOP and Station Blackout profiles and provides the basis for the times listed in Table 4.8-2. The battery charger will be disconnected throughout the test .

~e provisions of Specification 2-CD battery and 4.0.9 are applicable to the charger.

COOK NUCLEAR PLANT - UNXT 2 3/4 8-13 AMENDMENT NO. ~, ~ 166

ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMEHTS Continued

'e.

shutdo at least discharge test 80K of s

5 t e ttjrer's 1

or 6), by verifying that the 0

b performance lace of the battery service esty is t

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

Whcn this test is performed in place of a battery service test, a modified performance test shall be conducted.

Annual pcrformancc tests of battery capacity shall bc 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 thc battery capacity drops more than 10% from its capacity on the previous performance test, or is below 90% of the manufacturer's rating. If the battery has reached 85% of service life, delivers a capacity of 100% or greater of the manufacturer's rated capacity, and has shown no signs of degradation, performance testing at two year intervals is acceptable until the battery shows signs of degradation~'

~

yC D. C COOK - UNIT 2 3/4 8-14 AMENOMENT NO. U2

TABLE 4.8-2 BATTERY EMERGENCY LOADS AB Batter Loads Minimum Time

1. Channel III static inverter 4 P'rs

2. Channel IV static inverter 4P'hrs SP'. Bop static inverter" 0S hrs gP. &peed pump turbine ffoiI pump 1 hr Control roam emergency lighting f

i'rs P j. @$

Main turbineAemergency oil pump Ig hrs r

7g. Isolation valve central iAP'rs SP. A11 control circuits 4/ hrs CD Batte Loads

1. Channel I static inverter gP'r's

2. Channel II static inverter +g hrs ~ ~

3. eed pump turbine oil pump 1 hr Ra<~ &C

4. Gener o seal osl pump +P hrs

5. 'ain turbind<emergency oil pump lP hrs

6. Isolation val ves 4P hrs

7. Annunciators 4jf hrs

8. All control circuits +P hrs AC power sources to the inverters shall be turned off at the start of the test and may be turned on at the end of the specified time interval. Inverters may be left in this operating mode for the duration of the discharge test.

0. C. COOK - UNIT 2 3/4 8-15 AMEHDMEHT HO. M2

0

'LECTRICAL POWER SYSTEMS SURVEILLANCE UIEUBKNTS Continued

3. The pilot cell voltage is greater than or equal to 2.13 volts, and

4. The overall battery voltage is greater tluur 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 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 betveen 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 shov 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 vill supply at lea'st 10 amperes at .

greater than or e'qual 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.

during s u DES 5 or 6), by verif e battery capacity is at least 8 acturer's rating. This perfo rge test shall be pe lace of the

~eS~~ 1~7- f'~gC COOK NUCLEAR PMT - UNIT 2 3/4 8-18 AlKMDMWfN0. PP,139

At least once per 60 months, conduct a performance test oF battery capacity during shutdown

~

(MODES 5 or 6), by verifying that the battery capacity is at least 80% of the manufacturer's rating.

When this test is performed in place of a battery service test, a modified performance test shall be conducted.

Annual performance 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% from its capacity on the previous performance test, or ls below 90% of the manufacturer's rating. Ifthc battery has reached 85% of service life, deHvers a capacity of 100% or greater of the manufacturer's rated capacity, and has shown no signs of degradation, performance testing at two year intervals is acceptable until the battery shows signs of degradation.

TABLE 4.8-3 BATTERY EMERGENCY LOADS "H" Batter Loads Minimum Time Auxiliary feedwater turbine control bus 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> FMO-211 valve 4. ~h~urZ FMO-221 val ve FMO-231 valve 4 ~haut('x FMO-241 valve $ ~4 o vf (f' TDTV valve ~kopcJ

~ ii "Valves will be operated through the following sequence:

QP'0 Beginning of test: open valves

2. Five minutes after the begi~in the teW: close the valves. w~P

3. Ten minutes after 4e beginning of the test: reopen the valves.

4. Four urs after the beginning of the test: close the valves.

End of the test.

0. C. COOK " UNIT 2 3/4 8-19, . AMEHDMEHT HO. ~2' norm nnn

3/4.8 ELECTRICAL POWER SYSTEHS BASES The OPERABILITY of the A.C. and D.C. power sources and associated distribution systems during operation ensures that sufficient power will be available to supply the safety related equipment required for 1) the safe shutdown of the facility and 2) the mitigation and control of accident conditions within the facility. The minimum specified independent and redundant A.C. and D,C. power sources and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation. The OPERABILITY of the power sources are consistent with the initial condition assumptions of the accident analyses and are based upon maintaining at least one redundant set of onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C. source.

The OPERABILITY of the minimum specified A.C. and D.C. power sources and associated distribution systems during shutdown and refueling ensures that 1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the facility status.

The train N station battery system provides an independent 250 volt DC power supply for power and control of the turbine driven auxiliary train. The limiting conditions of operation for the train N battery feedwater'ump are consistent with the requirements of the auxiliary feedwater system. The surveillance requirements for the train N battery system are consistent with the requirements of the AB and CD station batteries. The train N battery loads are derived from equipment in the turbine driven auxiliary feedwater pump train and battery sizing is consistent with the functional requirements of these components. Simulated loads for battery tests are loads equivalent to measured actual loads.

~The AB and CD station battery systems provide a reliable source of continuous .power for supply and control of plant loads such as switchgear 6 annunciator control circuits, static inverters, valve control centers, emergency lighting and motor control centers. The design duty cycles of these batteries are composite load profiles resulting from the combination of the three hour Loss Of Coolant Accident/Loss Of Offsite Power battery load profiles and the four hour Station Blackout battery load profiles ~

D. C. COOK - UNIT 2 B 3/4 8-1 Amendment No. 72

ATTACHMENT 2 TO AEP:NRC:0896U PROPOSED REVISED TECHNICAL SPECIFICATION PAGES

4'> "~ ~ P 3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCE REQUIREMENTS 3/4.8 ELECTRICAL POWER SYSTEMS D.. DISTRIB TI N - PERATING LIMITINGCONDITION FOR OPERATION 3.8.2.3 The following D.C. bus trains shall be energized and OPERABLE with tie breakers between bus trains open:

TRAIN AB consisting of 250-volt D.C. bus AB, 250-volt D.C. battery bank No. 1AB, and a full capacity charger, and TRAIN CD consisting of 250-volt D.C. bus CD, 250-volt D.C. battery bank No. 1CD, and

~*' a full capacity charger.

MODES 1, 2, 3 and 4.

ACTION With one 250-volt D.C. bus inoperable, restore the inoperable bus to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

b. With one 250-volt D.C. battery and/or its charger inoperable, restore the inoperable battery and/or charger to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE RE UIREMENTS 4.8.2.3.1 Each D.C. bus train shall be determined OPERABLE and energized with tie breakers open at least once per 7 days by verifying correct breaker alignment and indicated power availability.

4.8.2.3.2 Each 250-volt battery bank and charger shall be demonstrated OPERABLE At least once per 7 days by verifying that:

The electrolyte level of each pilot cell is between the minimum and maximum level indication marks, 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, The pilot cell voltage is greater than or equal to 2.13 volts, and The overall battery voltage is greater than or equal to 250 volts.

COOK NUCLEAR PLANT-UNIT 1 Page 3/4 8-12 AMENDMENT ~

3/4,0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCE REQUIREMENTS 3/4.8 ELECTRICALPOWER SYSTEMS SURVEILLANCE RE UIREMENTS Continued 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.

The specific gravity, corrected to 77'F, and full electrolyte 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 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.

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-towell and terminal connections are clean, tight, free of corrosion and coated with antiworrosion material, 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 design duty cycle which is based on the composite load profile. The composite load profile envelopes both the LOCA/LOOP and Station Blackout profiles and provides that basis for the times listed in Table 4.8-2. The battery charger will be disconnected throughout the test. The battery terminal voltage shall be maintained greater than or equal to 210 volts throughout this test.

e. At least once per 60 months, conduct a performance test of battery capacity during shutdown (MODES 5 or 6), by verifying that the battery capacity is at least 80% of the manufacturer's rating. When this test is performed in place of a battery service test, a modifled performance test shall be conducted.

Annual performance 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% from its capacity on the previous performance test, or is below 90% of the manufacturer's rating. If the battery has reached 85% of service life, delivers a capacity of 100% or greater of the manufacturer's rated capacity, and has shown no signs of degradation, performance testing at two year intervals is acceptable until the battery shows signs of degradation.

COOK NUCLEAR PLANT-UNIT 1 Page 3/4 8-13 AMENDMENT42$ , 4'

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS 3/4.8 ELECTRICAL POWER SYSTEMS TABLE 4.8-2 BATI'ERY EMER EN Y LOAD AB Bat te Loads Minimum Time Channel III static inverter

2. Channel IV static inverter East feed pump turbine emergency oil pump 1hr Control room emergency lighting Main turbine backup oil pump 1hr

6. Isolation valve control All control circuits D Batte ad Channel I static inverter

2. Channel II static inverter BOP static inverter 4, West feed pump turbine emergency oil pump

5. Generator hydrogen emergency seal oil pump Main turbine emergency oil pump Isolation valves Annunciators

9. All control circuits AC power sources to the inverters shall be turned off at the start of the test and may be turned on at the end of the specified time interval. Inverters may be left in this operating mode for the duration of the discharge test.

COOK NUCLEAR PLANT-UNIT 1 Page 3/4 8-14 AMENDMENT ~

0 3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS 3/4.8 ELECTRICAL POWER SYSTEMS D.C. DISTRIBUTION - SHUTDOWN

. LIMITIN NDITION FOR PERATION 3.8.2.4 As a minimum, the following D.C. electrical equipment and bus shall be energized and OPERABLE:

1 - 250-volt D.C. bus, and 1 - 250-volt battery bank and charger associated with the above D.C. bus.

APPLICABILITY: MODES 5 and 6.

~ATION:

With less than the above complement of D.C. equipment and bus OPERABLE, establish CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

SURVEILLANCE RE UIREMENT 4.8.2.4.1 The above required 250-volt D.C. bus shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power availability.

4.8.2.4.2 The above required 250-volt battery bank and charger shall be demonstrated OPERABLE per Surveillance Requirement 4.8.2.3.2.

COOK NUCLEAR PLANT-UNIT 1 Page 3/4 8-15 AMENDMENT4%

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCE REQUIREMENTS 3/4.8 ELECTRICAL POWER SYSTEMS D C. DI TRIBUTION - OPERATING - TRAIN N BALI'ERY SYSTE IMITINGCONDITION FOR OPERATION 3.8.2.5 The following D.C. bus train shall be energized and OPERABLE:

TRAIN N consisting of 250-volt D.C. bus N, 250-volt D.C. battery bank N, and a full capacity charger.

With the Train N battery system inoperable, declare the turbine driven Auxiliary Feedwater Pump inoperable and follow the ACTION statement of Specification 3.7.1.2.

S RVEILLANCE RE UIREMENTS 4.8.2.5.1 The D.C. bus train N shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power availability.

4.8.2.5.2 The 250-volt battery bank and charger shall be demonstrated OPERABLE:

I At least once per 7 days by verifying that:

The electrolyte level of each pilot cell is between the minimum and maximum level indication marks, 2.. The pilot cell specific gravity, corrected to 77'F and full electrolyte level (fluid at 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.

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.

The specific gravity, corrected to 77'F and full electrolyte level (fluid at the bottom of the maximum level indicationmark), 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.

COOK NUCLEAR PLANT-UNIT 1 Page 3/4 8-16

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCE REQUIREMENTS 3/4.8 ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS ontinued 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 antieorrosion 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 />.

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.

At least once per 60 months, conduct a performance test of battery capacity during shutdown (MODES 5 or 6), by verifying that the battery capacity is at least 80% of the manufacturer's rating. When tins test is performed in place of a battery service test, a modified performance test shall be conducted.

Annual performance 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% from its capacity on the previous performance test, or is below 90% of the manufacturer's rating. If the battery has reached 85% of service life, delivers a capacity of 100% or greater of the manufacturer's rated capacity, and has shown no signs of degradation, performance testing at two year intervals is acceptable until the battery shows signs of degradation.

COOK NUCLEAR PLANT-UNIT 1 Page 3/4 8-17 AMENDEIENT4K, 455

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS 3/4.8 ELECTRICAL POWER SYSTEMS TABLE4.-

BATTERY EMERGENCY LOADS "N" Batte ads Minimum Time Auxiliary feedwater turbine control bus 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> FMO-211 valve 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> FMO-221 valve 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> FMO-231 valve 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> FMO-241 valve 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> TDTV valve 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> COOK NUCLEAR PLANT-UNIT 1 Page 3/4 8-18 AMENDMENTAS

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCE REQUIREMENTS 3/4.8 ELECTRICALPOWER SYSTEMS

/4. Alternative A C Power S urces LIMITIN C NDITION FOR OPERATI N 3.8.3.1 The steady state bus voltage for the manual alternate reserve source shall be greater than or equal to 90% of the nominal bus voltage.

APPLICABILITY: Whenever the manual alternate reserve source (69 kV) is connected to more than two buses.

~ACTI N With bus voltage less than 90% nominal, adjust load on the remaining buses to maintain steady state bus voltage greater than or equal to 90% limit.

SURVEILLAN E RE IREMENTS 4.8.3.1 No additional surveillance requirements other than those required by SPecifications 4.8.1.1.1 and 4.8.1.2.

Shared with D.C. Cook Unit 2.

COOK NUCLEAR PLANT-UNIT 1 Page 3/4 8-19

3/4 BASES 3/4.8 ELECTRICAL POWER SYSTEMS The OPERABILITY of the A.C. and D.C power sources and associated distribution systems during operation ensures that sufficient power will be available to supply the safety related equipment required for 1) the safe shutdown of the facility and 2) the mitigation and control of accident conditions within the facility. The minimum specified independent and redundant A.C. and D.C. power sources and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation. The OPERABILITYof the power sources are consistent with the initial condition assumptions of the accident analyses and are based upon maintaining at least one of each of the onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C.

source.

The OPERABILITY of the minimum specified A.C. and D.C. power sources and associated distribution systems during shutdown and refueling ensures that 1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the facility status.

The AB and CD station battery systems provide a reliable source of continuous power for supply and control of plant loads such as switchgear and annunciator control circuits, static inverters, valve control centers, emergency lighting and motor control centers. The design duty cycles of these batteries are composite load profiles resulting from the combination of the three hour Loss Of Coolant Accident/Loss Of Offsite Power battery load profiles and the four hour Station Blackout battery load proliies.

The train N station battery system provides an independent 250 volt DC power supply for power and control of the turbine driven auxiliary feedwater pump train. The limiting conditions of operation for the train N battery are consistent with the requirements of the auxiliary feedwater system. The surveillance requirements for the train N battery system are consistent with the requirements of the AB and CD station batteries. The train N battery loads are derived from equipment in the turbine driven auxiliary feedwater pump train and battery sizing is consistent with the functional requirements of these components. Simulated loads for battery tests are loads equivalent to measured actual loads.

COOK NUCLEAR PLANT-UNIT 1 Page B 3/4 8-1 AMENDMENT86

3/4 BASES 3/4.8 ELECTRICAL POWER SYSTEMS Removal. of accumulated water as required by 4.8.1.1.2.b.2 is performed by drawing the contents off the bottom of the tank until acceptable results are obtained for either a tape test or a water and sediment test. An acceptable

. result for the water and sediment content is a measured value less than 0.05 percent volume.

The sample specified in 4.8.1.1.2.c.4 is sent offsite for testing. A serious attempt willbe made to meet the 31-day limit on the offsite tests; however, iffor some reason this limit is not met (e.g., ifthe sample is lost or broken or ifthe results are not received in 31 days), the diesel generators should not be considered inoperable. Ifthe sample is lost, broken, or fails the offsite tests and the new oil has already been put into the storage tank, the offsite tests will be performed on a sample taken from the storage tank. If the results on the subsequent storage tank sample are not within specified limits, the diesel generators should be considered OPERABLE and the out-of-spec properties should be returned to within specification as soon as possible.

If the monthly storage tank sample taken in accordance with Specification 4.8.1.1.2.d fails the particulate contamination test, the diesel generators should be considered OPERABLE and the contamination level should be restored to below 10 mg/liter as soon as possible.

The precision leak-detection test described in Surveillance Requirement 4.8.1.1.2.f.2 should be performed as described in NFPA (National Fire Protection Association) -329. As NFPA-329 is revised, the precision leak-detection test may be modified to incorporate changes to the test as described in the revisions to NFPA-329, The minimum required diesel fuel oil volume is 43,240 gallons. This volume is consistent with operation of one diesel generator continuously for 7 days at rated load, as recommended in Regulatory Guide 1.137, entitled "Fuel Oil System for Standby Diesel Generators." The Technical SpeciIications require a minimum of 46,000 gallons of fuel. The 46,000 gallons is an indicated volume. This amount includes margin for characteristics such as location of the tank discharge pipes and slope of the tanks.

COOK NUCLEAR PLANT-UNIT 1 Page B 3/4 8-2 AMENDMENT ~, 145

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS 3/4.8 ELECTRICALPOWER SYSTEMS C DISTRIB N - PERATIN LIMITIN NDITION F R PERATI N 3.8.2.3 The following D.C. bus trains shall be energized and OPERABLE with tie breakers between bus trains open:

TIGON AB consisting of 250-volt D.C. bus AB, 250-volt D.C. battery bank No. 2AB, and a full capacity charger, and TI4QN CD consisting of 250-volt D.C. bus CD, 250-volt D.C. battery bank No. 2CD, and a full capacity charger.

~*

~TI(~N

a. With one 250-volt D.C. bus inoperable, restore the inoperable bus to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

b. With one 250-volt D.C. battery and/or its charger inoperable, restore the inoperable battery and/or charger to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLAN E RE UIREMENT 4.8.2.3.1 Each D.C. bus train shall be determined OPERABLE and energized with tie breakers open at least once per 7 days by verifying correct breaker alignment and indicated power availability.

4.8.2.3.2 Each 250-volt battery bank and charger shall be demonstrated OPERABLE At least once per 7 days by verifying that:

The electrolyte level of each pilot cell is between the minimum and maximum level indication marks, 2, 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, 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.

COOK NUCLEAR PLANT-UNIT2 Page 3/4 8-12

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS 3/4.8 ELECTRICAL POWER SYSTEMS VEILLA E RE EMENT ntinued

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 level (fiuid 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 antimrrosion material,

3. The battery charger willsupply 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 design duty cycle which is based on the composite load profile. The composite load profile envelopes both the LOCA/LOOP and Station Blackout profiles and provides that basis for the times listed in Table 4.8-2. The battery charger will be disconnected throughout the test. The battery terminal voltage shall be maintained greater than or equal to 210 volts throughout this test.

e. At least once per 60 months, conduct a performance test of battery capacity during shutdown (MODES 5 or 6), by verifying that the battery capacity is at least 80% of the manufacturer's rating. When this test is performed in place of a battery service test, a modified performance test shall be conducted.

Annual performance 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% &omits capacity on the previous performance test, or is below 90% of the manufacturer's rating. If the battery has reached 85% of service life, delivers a capacity of 100% or greater of the manufacturer's rated capacity, and has shown no signs of degradation, performance testing at two year intervals is acceptable until the battery shows signs of degradation.

The provisions of Specification 4.0.9 are applicable to the 2ND battery and charger.

COOK NUCLEAR PLANT-UNIT2 Page 3/4 8-13 AMENDMENT444, 439, 446

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS 3/4.8 ELECTRICALPOWER SYSTEMS

~TABLE 4 AITERYEMER EN YL AD AB Batte Loads inimum Time Channel III static inverter Channel IV static inverter

3. BOP static inverter 4, East feed pump turbine emergency oil pump

5. Control room emergency lighting

6. Main turbine east emergency oil pump I hr

7. Isolation valve control All control circuits D Batte ads

l. Channel I static inverter

2. Channel 11 static inverter West feed pump turbine emergency oil pump

4. Generator hydrogen emergency seal air-oil pump

5. Main turbine west emergency oil pump Isolation valves

7. Annunciators All control circuits AC power sources to the inverters shall be turned off at the start of the test and may be turned on at the end of the specified time interval. Inverters may be left in this operating mode for the duration of the discharge test.

COOK NUCLEAR PLANT-UNIT2 Page 3/4 8-14

3/4.0 3/4.8 l

LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS ELECTRICAL POWER SYSTEMS t

D C DISTRIB N- WN LIMlTING NDITI N F PERATI N 3.8,2.4 As a minimum, the following D.C. electrical equipment and bus shall be energized and OPERABLE:

1 - 250-volt D.C. bus, and 1 - 250-volt battery bank and charger associated with the above D.C. bus.

~ATION:

With less than the above complement of D.C. equipment and bus OPERABLE, establish CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

URVEILLANCERE REMENTS 4.8.2.4.1 The above required 250-volt D.C. bus shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power availability.

4.8.2.4.2 The above required 250-volt battery bank and charger shall be demonstrated OPERABLE per Surveillance Requirement 4.8.2.3.2.

The provisions of Specification 4.0.9 are applicable to the Surveillance Requirements 4.8.2.3.2.c.3 and 4.8.2.3.2.d for the 2-CD battery and charger.

COOK NUCLEAR PLANT-UNIT2 Page 3/4 8-15

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS 3/4.8 ELECTRICALPOWER SYSTEMS D.. Dl TRIB I N - OPERATING - TRAIN N BALI'ERY SYSTEM

, LIMITIN CO DITI N FOR OPERATION 3.8.2.5 The following D.C. bus train shall be energized and OPERABLE:

TRAIN N consisting of 250-volt D.C. bus N, 250-volt D.C. battery bank N, and a full capacity charger.

APPLICABILITY: MODES 1, 2 and 3.

ACTION With the Train N battery system inoperable, declare the turbine driven Auxiliary Feedwater Pump inoperable and follow the ACTION statement of Specification 3.7.1.2.

SURVEILLANCE RE UIREMENTS 4.8.2.5.1 The D.C. bus train N shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power availability.

4.8.2.5.2 The 250-volt battery bank and charger shall be demonstrated OPERABLE:

At least once per 7 days by verifying that:

The electrolyte level of each pilot cell is between the minimum and maximum level indication marks, The pilot cell specific gravity, corrected to 77'F and full electrolyte level (fluid at 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.

At least once per 92 days by verifying that:

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

The specific gravity, corrected to 77'F and full electrolyte 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 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.

COOK NUCLEAR PLANT-UNIT2 Page 3/4 8-16 AMENDMENT448

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS 3/4.8 ELECTRICAL POWER SYSTEMS S RVEILLANCE RE IREMENTS C ntinued 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.

The cell-towell 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 />.

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, conduct a performance test of battery capacity during shutdown (MODES 5 or 6), by verifying that the battery capacity is at least 80% of the manufacturer's rating. When this test is performed in place of a battery service test, a modified performance test shall be conducted.

Annual performance 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% from its capacity on the previous performance test, or is below 90% of the manufacturer's rating. If the battery has reached 85% of service life, delivers a capacity of 100% or greater of the manufacturer's rated capacity, and has shown no signs of degradation, performance testing at two year intervals is acceptable until the battery shows signs of degradation.

COOK NUCLEAR PLANT-UNIT2 Page 3/4 8-17 AMENDMENT4R, 439

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS 3/4.8 ELECTRICAL POWER SYSTEMS T~ABLE 4 BATTERY EMER EN Y LOADS "N" Batte ad inimum Time Auxiliary feedwater turbine control bus 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> FMO-211 valve 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> FMO-221 valve 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> FMO-231 valve 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> FMO-241 valve 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> TDTV valve 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> COOK NUCLEAR PLANT-UNIT2 Page 3/4 8-18 AMENDMENT443

3/4.0 LIMITINGCONDITION FOR OPERATION AND SURVEILLANCEREQUIREMENTS 3/4.8 ELECTRICALPOWER SYSTEMS

/4. 1 erna ive Pw Su LIMITIN NDITI N FOR PERATION 3.8.3.1 The steady state bus voltage for the manual alternate reserve source shall be greater than or

~*": equal to 90% of the nominal bus voltage.

"'"" ' l" "'0'uses.

With bus voltage less than 90% nominal, adjust load on the remaining buses to maintain steady state bus voltage greater than or equal to 90% limit.

RVEILL N E RE EMENT 4.8.3.1 No additional surveillance requirements other than those required by Specifications 4.8.1.1.1 and 4.8.1.2.

Shared with Cook Nuclear Plant Unit I.

COOK NUCLEAR PLANT-UNIT2 Page 3/4 8-19

3/4 BASES 3/4.8 ELECTRICAL POWER SYSTEMS The OPERABILITY of the A.C. and D.C power sources and associated distribution systems during operation ensures that sufficient power will be available to supply the safety related equipment required for 1) the safe shutdown of the facility and 2) the mitigation and control of accident conditions within the facility. The minimum specified independent and redundant A.C. and D.C. power sources and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation. The OPERABILITYof the power sources are consistent with the initial condition assumptions of the accident analyses and are based upon maintaining at least one of each of the onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C.

source.

The OPERABILITY of the minimum specified A.C. and D.C. power sources and associated distribution systems during shutdown and refueling ensures that 1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the facility status.

The AB and CD station battery systems provide a reliable source of continuous power for supply and control of plant loads such as switchgear and annunciator control circuits, static inverters, valve control centers, emergency lighting and motor control centers. The design duty cycles of these batteries are composite load profiles resulting from the combination of the three hour Loss Of Coolant Accident/Loss Of Offsite Power battery load profiles and the four hour Station Blackout battery load profiles.

The train N station battery system provides an independent 250 volt DC power supply for power and control of the turbine driven auxiliary feedwater pump train. The limiting conditions of operation for the train N battery are consistent with the requirements of the auxiliary feedwater system. The surveillance requirements for the train N battery system are consistent with the requirements of the AB and CD station batteries. The train N battery loads are derived from equipment in the turbine driven auxiliary feedwater pump train and battery sizing is consistent with the functional requirements of these components. Simulated loads for battery tests are loads equivalent to measured actual loads.

COOK NUCLEAR PLANT-UNIT2 Page B 3/4 8-1 AMENDMENT&

3/4 BASES 3/4.8 ELECTRICAL POWER SYSTEMS

. Removal of accumulated water as required by 4.8.1.1.2.b.2 is performed by drawing the contents off the bottom of the tank until acceptable results are obtained for either a tape test or a water and sediment test. An acceptable result for the water and sediment content is a measured value less than 0.05 percent volume.

The sample specified in 4.8.1.1.2.c.4 is sent offsite for testing. A serious attempt willbe made to meet the 31-day if limit on the offsite tests; however, for some reason this limit is not met (e.g., ifthe sample is lost or broken or ifthe results are not received in 31 days), the diesel generators should not be considered inoperable. Ifthe sample is lost, broken, or fails the offsite tests and the new oil has already been put into the storage tank, the offsite tests will be performed on a sample taken from the storage tank. If the results on the subsequent'torage tank sample are not within specified limits, the diesel generators should be considered OPERABLE and the out-of-spec properties should be returned to within specification as soon as possible.

If the monthly storage tank sample taken in accordance with Specification 4.8.1.1.2.d fails the particulate contamination test, the diesel generators should be considered OPERABLE and the contamination level should be restored to below 10 mg/liter as soon as possible.

The precision leak-detection test described in Surveillance Requirement 4.8.1.1.2.f.2 should be performed as described in NFPA (National Fire Protection Association) -329. As NFPA-329 is revised, the precision leak-detection test may be modified to incorporate changes to the test as described in the revisions to NFPA-329.

The minimum required diesel fuel oil volume is 43,240 gallons. This volume is consistent with operation, of one diesel generator continuously for 7 days at rated load, as recommended in Regulatory Guide 1.137, entitled "Fuel Oil Systein for Standby Diesel Generators." The Technical'Specifications require a minimum of 46,000 gallons of fuel. The 46,000 gallons is an indicated volume. This amount includes margin for characteristics such as location of the tank discharge pipes and slope of the tanks.

COOK NUCLEAR PLANT-UNIT2 Page B 3/4 8-2 AMENDMENT448, 132