ML17306B267

Proposed Tech Specs,Reflecting Revised Train a Kw Value to Be Rejected & Load Designation & Incorporation of Provisions Discussed in 920508 Ltr Re DG Full Load Rejection Testing

ML17306B267
Person / Time
Site:	Palo Verde
Issue date:	01/25/1993
From:	ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17306B266	List: ML17306B267
References
NUDOCS 9302030329
Download: ML17306B267 (19)

Text

ELECTRICAL POWER SYLPH SURVEILLANCE RE UIREMEHTS Continued) 4.'8. l. l. 2 (Continued)

b. At least once per 92 days by verifying that a sample of diesel fuel fro'm the fuel storage tank obtained in accordance with ASTM-04176-82, is within the acceptable limits specified in Table 1 of ASTM 0975-81 when checked for viscosity, water and sediment.

c At least once per 184 days the diesel generator shall be started""

and.accelerated to generator voltage and frequency at 4160 ~ 420 volts and 60 + 1.2 Hz in less than or equal to 10 seconds. The generator voltage and frequency shall be 4160 ~ 420 volts and 60 + 1.2 Hz-within 10 seconds after the start signal. The generator shall be manually synchronized to its appropriate emergency bus, loaded to an indicated 5200-5400""" kW in less than or equal to 60 seconds, and operate for at least 60 minutes.

This test, if it is performed so it coincides with the testing required by Surveillance Requirement 4.8.1. 1.2. a.4, may also serve

- to concurrently meet those requirements as well.

d. At least once per 18 months during shutdown by:

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

2. Verifying the generator capability to reject a single largest load of greater, than or equal to kW=-(Train B AFW ump)

~;n g ggrN0) 0'kr"C4'i'lier for emergenc diesel generator= 8 or W for emergency diesel generator A ( ) while maintaining voltage at f

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4160 ~ 420 volts and frequency .at 60 ~ 1.2 Hz.

Verifying that the autamatic load sequencers are OPERABLE with the interval between each load block within ~ 1 second of its design interval.

Simulating a loss of offsite power by itself, and:

a) Verifying deenergization of the emergency busses and load shedding fram 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 shut" down loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator is "This test shall be conducted in accordance with the manufacturer's recommen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.

"""This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

PALO VEROE - UHIT 1 3/4 8-4 AMEHOMEHT HO-cy3Q203Q32~

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~ ~ ~ 0 0 ROLLED DOCUM T ELECTRICAL POWER SYSTEM SURVEILLANCE RE UIREMENTS (Continued) 4.8.1.1. 2 (Continued) loaded with the shutdown loads. After energization of these loads, the steady state voltage and frequency shall be maintained at 4160 + 420 volts and 60 + 1.2/-0.3 Hz.

Verifying that on an ESF actuation test signal (without loss of power) the diesel generator starts" on the auto-start signal and operates on standby for greater than or equal to 5 minutes.

7 p. Simulating a loss-of-offsite power in conjunction with an ESF actuation test signal, and 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 load sequencer, and operates for greater than or equal to 5 minutes and maintains the steady-state voltage and frequency at 4160 +

420 volts and 60 + 1.2/-0.3 Hz.

c) Verifying that all automatic diesel generator-trips, except engine overspeed, generator differential, 'nd low lube oil pressure, are automatically bypassed upon loss of voltage on the emergency bus, upon a safety injection actuation signal or upon AFAS. gazoo gq oa 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 ours of this test, the diesel enerator shall be loaded to an indicated kW and during the.

remain)n hours of this test, the diesel generator shall be loaded to an indicated kW"". Within 5 minutes after completing this 24-hour test, perform Surveillance Require-ment 4.8.1.1.2.d..b)."""

peg~ oooo "This test shall be conducted in accordance with the manufacturer's recommen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.

""This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary v iations due to changing bus loads shall not invalidate the test.

"""IfSpecification 4.8. 1. 1.2.d. . ) is not satisfactorily completed, it is not necessary to repeat the preceding 24-hour test. Instead, the diesel generator may be operated at 5200-5400 kW"" 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.

PALO VERDE " UNIT 1 3/48 5

,

AMENDMENT HD.,54,.'.::'g"..;.'".:.'-.".".:,'cv'e'~e 4: sA

ELECTRICAL POWER 0 0 SYSTEMS SURVEILLANCE REQUIREMENTS Continued

'9P. Verifying that the auto-connected loads to each diesel generator do not exceed the continuous rating of 5500 kW.

P. Verifying the diesel generator's capability to:

a) Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated restoration of offsite power, Transfer its loads to the offsite power source, and Proceed through its shutdown sequence.

Verifying that the following diesel generator lockout features prevent diese'l generator starting only when required:

a) turning gear engaged

~

b) emergency stop

e. At least once. per 10 years or after any'odifications which could

... affect diesel generator interdependence by starting"" both diesel generators simultaneously, during shutdown, and verifying that both diesel, generators accelerate to generator voltage and frequency at 4160 ~ 420 volts and 60 ~ 1.2 Hz in less than or equal to 10 seconds.

4.8.1.1.3 Reoorts " All diesel generator failures; valid or nonvalid, shall be reported to the Commission within 30 days in a Special Report pursuant to

, Specification 6.9.2. Reports of diesel generator failures shall include the information recommended in Regulatory Position C.3.b'f Regulatory Guide 1.108, Revision 1, August.1977. If the number of failures in the last 100 valid tests (on a per nuclear unit basis) is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

""This test shall be conducted in accordance with the manufacturer's recommen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.

PALO VERDE " UNIT 1 3/4 8-6 AMENDMENT NO- 9

~ 0 3/4.8 BASES ELECTRICAL PO SY

<~~V-ORMATION QlY S i 3/4. 8. 1 3/4. 8. 2 and

~ ~ ~ 3/4. 8. 3 A. C. SOURCES D. C SOURCES and ONSITE POWER DISTRIBUTION 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 condi-tions 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 Criterion 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 commen-surate with the level of degradation. The OPERABILITY of the power sources are consistent with the initial condition assumptions of the safety 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 required steady state frequency for the emergency diesels is 60 + 1.2/

-0.3 Hz to be consistent with the safety analysis to provide adequate safety injection flow.

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 unit status.

The surveillance requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory Guides 1.9 "Selection of Diesel Generator Set Capacity for Standby Power Supplies," March 10, 1971, and 1. 108 "Periodic Testing of Diesel Gener ator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977.

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- 3/4 8"1 ~ENDHENT NO. 27 PALO VERDE UNIT 1 B

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0 ROLLED DOCUM T ELECTRICAL POWER SYSTEH .

SURVEILLANCE RE UIR E H ENTS Continu e d tf'2

2. Verifying the generator capab(1ft to re ect a e)nile lar ast load of greater than or equal to W Tra n A M um

~

for emergency'iesel enerator B orM for emergency diesel enerator A ( ~hfle Iafntafning voltage at 160.4 420 volts and frequency at 60 k 1.2 Hz ~""

g~g,g,l g Q.l.l.~

p g~y ~ LV+er.V C Verifying that the automatfc load equencers are OPERABLE wfth k++~

the interval between tach load block within a 1 second of fts design fnterval.~~"

Simulating a loss of offsfte power by ftself, and:

a) Verftyfng deenergfzatfon 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 shut-down loads through the load sequencar and operates for greater than or equal to 5 minutes whfle fts generator fs r

e erre until cyclo 3 refueling outage, PALO VERDE - UNIT 2 3/4 8"4a Amendment Mo. 41 (new page)

ELECTRICAL POWER SYSTEH SURYEI LLANCE RE UIREHENTS Continued 4.8.1.1. 2 (Continued) loaded with the shutdown loads. After energization of these loads, the steady state voltage and frequency shall be maintained at 4160 + 420 volts and 60 + 1.2/-0.3 Hz.

Verifying that on an ESF actuation test signal (without loss of power} the diesel generator starts" on the auto"start signal and operates. on standby for greater than or equal to 5 minutes.

.."7 . -- Simulating a loss-of-offsite power in conjunction with an ESF actuation test signal, and s

...a) ., Yerifying de-energization of .the emergency busses and load

.,- . ",-;. "shedding from the emergency busses.

- b) .- Verifying the diesel starts" on the auto-start signal, O 0 energizes the emergencyrbusses with permanently connected loads within 10 seconds, energizes the auto-connected

. emergency (accident) loads through. the load sequencer, and operates for greater than or equal to 5 minutes and maintains-the. steady-state voltage and frequency at 4160 +

420 volts and 60 + 1.2/-0.3 Hz.

.. c) Verifying that all automatic diesel generator trips, except engine overspeed, generator differential, and low lube oil

'ressure, are automatically bypassed upon loss of voltage on the emergency bus, upon a safety injection actuation si gnal or upon AFA ~g ~ QQOb 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 />.

Ouring the first ours of this test, the iesel generator shall be loaded to an indicated kM"" and during the rema>ning hours of this test, the diesel generator shall be loaded to an indicated 5200~0 W"". Within 5 minutes after completing this 24-hour test, perform urveillance Require-ment 4.8.1.1.2.d..b)."""

~g~ -6500 Thi h1ib d di d ih I f* as applicable dations regarding engine prelube and warmup procedures, and regarding 1 oading recommendations.

>>This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test. CP

"""IfSpecification 4.8.1.1.2.d.g.b)'s not satisfactorily completed, it is not necessary to repeat the preceding 24-hour test. Instead, the diesel generator may be operated at 5200-5400,kW"" 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.

PALO VERDE " UNIT 2 3/4 8-.5 A.".ENOPENT NO. 39

~ ~ ~ ~

1

0 ROLLED DOCUM T ELECTRICAL P6MER SYSTEMS SURVEILLANCE RE UIREMENTS ...Continued .

Verifying that the auto-connected loads to each diesel generator do not exceed the continuous rating of 5500 kw.

(DP Verifying the diesel generator's capability to:

a) Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated restoration of offsite power, b) Transfer its loads to the offsite power source, and ZrJSatzTR ~ t t 2. > ~~

c) Proceed through its shutdown sequence.

Verifying that the following diesel generator lockout features prevent diesel generator starting only when required:

a) turning gear engaged b) emergency stop

e. At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting** both diesel

'generators simultaneously, during shutdown, and verifying that both diesel generators accelerate to generator -voltage and frequency at 4160 + 420 volts and'60 + 1.2 Hz in less than or equal to 10 seconds.

4.8. 1:1.3 ~Re orts - All diesel generator failures, valid o'r nonvalid, sha'll be reported to the Commission within 30 days in a Special Report pursuant to Specification 6.9.2. Reports of diesel generator failures shall include the information recommended in Regulatory Position C.3;b of Regulatory Guide 1. 108, Revision 1, August 1977. If the number of failures in the last 100 valid tests (on a per nuclear unit basis) is greater than or equal to 7, the report shall be supplemented to include the'dditional information'recommended in Regulatory Position C.3.b of Regulatory Guide 1.10&, Revision 1, August 1977- -"

E

""This test shall be conducted in accordance with the manufacturer's recommen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.

PALO VERDE - UNIT 2 3/4 8-6 AMENDMENT HO. 39

~4/4 S.~CLE67RMAL~ROHER

~&TEN&'ASES 3/4.8.1. 3/4.8.2 and 3/4.8.3 A.C. SOURCES. D.C SOURCES and ONSITE POMER DISTRIBUTION SYSTEMS The OPERABILITY of the A.C. and D.C. power'ources 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 condi-tions 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 Criterion 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 commen-surate with the l'evel of degradation. The OPERABILITY of the .power sources are consistent with the initial condition assumptions of the safety 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 required steady state frequency for the emergency diesels is .60 + 1.2/

-0.3 Hz to be consistent with the safety analysis to provide adequate safety

'injection flow:

The OPERABILITY of the minimum specified A.C. and D.C. power sources ana 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 unit status.

The surveillance requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory

. Guides 1.9 "Selection of Diesel Generator Set Capacity for Standby Power Supplies," March 10, 1971, and 1. 108 "Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977.

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>~~,~~~~/ p r gq ~i vc.J2kuk PALO VERDE - UNIT 2 B 3/4 8-1

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ELECTRICAL POMER SYSTEM SURVEILLANCE REQUIREHENTS (Continued) 4.8.1.1. 2 (Continued)

b. At least once per 92 days by verifying that a sample of diesel fuel from the fuel storage tank obtained in accordance with ASTH-04176-82, is within the acceptable limits specified in Table 1 of ASTM 0975-81 when checked for viscosity, water and sediment.

c. At least once per 184 days the diesel .generator shall be started""

.

and accelerated to generator voltage and frequency- at -4160 + 420 volts and 60 + 1.2 Hz 'fn less than or equal to 10 seconds. The generator voltage and frequency shall be 4160 + 420 volts and 60 ~ 1.2 Hz within 10 seconds after the start signal. The generator shall be manually synchronized to its appropriate emergency bus, loaded to an indicated 5200-5400""" kM in less than or equal to 60 seconds, and operate for at least 60 minutes.

This test, if it .is performed so Surveillance it coincides with the testing 4.8..1.1.2.a.4, may also serve required by Requirement to concurrently meet those requirements as well.

d. 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

"~)

.'ecommendations for this class .of stand 0+ ervice.

2. Verifying the generator capability to regect a single largest.

e'ee'-" load of. greate~ than or equal to

<~;,I]er for emergency diesel generator B or..

4160 + 420 kM'(Train B AFM um volts and frequency at 60 + 1.2 Hz.

for emergency diesel

,~,lL2 8 Verifying that the automatic load sequencers are OPERABLE with the interval between each load block within + 1 second of its design interval.

Simu'leting s loss of offsite power by itself, end:

a) Verifying deenergization 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 shut-down loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator is dations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.

"""This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

PALO VERDE - UNIT 3 3/4 8-4

yoyRoLLEo ooeuMey ~

ELECTRICAL POMER SYSTEM SURVEILLANCE RE UIREHENTS (Continued) 4.8.1.1.2 (Continued) loaded with the shutdown loads. After energization of these loads, the steady state voltage and frequency shall be maintained at 4160 + 420 volts and 60 + 1.2/-0.3 Hz.

g P. Verifying that on an ESF actuation test signal (without loss of power) the diesel generator starts* on the auto-start signal and operates on standby for greater than or equal to 5 minutes.

7 yg. Simulating a loss-of-offsite power in conjunction with an ESF actuation test signal, and 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 load sequencer, and operates for greater -than or equal to 5 minutes and maintains the steady-state voltage and frequency at 4160 +

420 volts and 60 + 1.2/-0.3 Hz.

c) Verifying that all automatic diesel generator trips, except engine overspeed, generator differential, and low lube oil pressure, are automatically bypassed upon loss of voltage on the emergency bus, upon a safety injection actuation signal or upon AfA >200- gcf Qg 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 ours of this test, the diesel generator shall be loaded to an indicated kM"" and during the emainin hours of this tesf., the diesel generator shall be loaded to an indicated M"". Mi thi n 5 minutes a fter completing this 24-hour test, perform Surveillance Require-ment 4.8.1.1.2.d..b).**"

5880-Gmc "This test shall be conducted in accordance with the manufacturer's r ecommen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendaticlls.

""This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

~*'IfSpecification 4.8. l. 1.2.d.P'.b} is not satisfactorily completed, it is not necessary to repeat the preceding 24-hour test. Instead, the diesel generator may be operated at 5200-5400 kW"" 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.

PALO VERDE - UNIT 3 3/4 8-5

~ 0 I ELECTRICAL POMER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

Verifying that the auto-connected loads to each diesel generator do not exceed the continuous rating of 5300 kM.

Verifying the diesel generator's capability to:

a) Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated restoration of offsite power, b) Transfer its loads to the offsite power source, and

~ ( g P.L( c) Proceed through its shutdown sequence.

Verifying that the 'following diesel generator lockout features prevent diesel generator starting only when required:

a) turning gear engaged

,b} emergency stop

e. At least 'once per 10 years or after any modifications which could affect diesel generator interdependence by starting"" both diesel generators simultaneously, during shutdown, and verifying that both diesel generators accelerate to generator voltage and frequency at 4160 + 420 volts and. 60 + 1.2 Hz in less than or equal to 10 seconds.

4.'8.1.1.3 Reoorts - All,diesel generator fai'lures, valid or nonvalid, shall be report.ed to the Commission within 30 days in a Special, Report pursuant to

"'Specification 6.9.2. Reports of diesel generator failures shall include the information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977. If the number of failures in the last 100 valid tests (on a per nuclear unit basis} is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position C.3.b of Regulatory Guide 1. 108, Revision 1, August 1977.

""This test shall be conducted in accordance with the manufacturer's recommen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.

PALO VERDE - UNIT 3 3i4 8-6

1 3

.3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1. 3/4.8.2 and 3/4.8.3 A.C. SOURCES D.C SOURCES and ONSITE POWER DISTRIBUTION 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 condi-tions 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 Criterion 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 commen-surate with the level of degradation. The OPERABILITY of the power sources are consistent with the initial condition assumptions of the safety 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 required steady state frequency for the emergency diesels is 60 + 1.2/

-0.3 Hz to be consistent with the safety analysis to provide adequate safety injection flow.

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 unit status.

The, surveillance requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory Guides 1.9 "Selection of Diesel Generator Set Capacity for Standby Power Supplies," March 10, 1971, and 1.108 "Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977.

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PAl 0 VERDE - UNIT 3 B 3/4 8 1

0 0'