Text

Proposed Tech Spec Pages 3/4 8-1,3/4 8-1a,3/4 8-2,3/4 8-2a, 3/4 8-2b & Bases for 3/4 8-1 Re Diesel Generator Testing
	ML19325E365
Person / Time
Site:	LaSalle
Issue date:	10/26/1989
From:	; COMMONWEALTH EDISON CO.
To:	;
Shared Package
ML19325E361	List: ML19325E360; ML19325E365;
References
	NUDOCS 8911060333
	Download: ML19325E365 (21)
	v • d • e

p. .

AUACIMENT B J. PROPOSED CilARGES TO THE ILCRtilCALSIECIEICAIl0ftS REVISED PAGES:

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, 3/4.8 CLECTRICAL POWER SYSTEMS 3/4.8.1 RE PLACE A.C. SOURCES-gg g A.C. SOURCES - OPERATING %M e LIMITING CONDITION FOR OPERATION

3. 8.1.1 As a minimum, the following A.C. electrical power s rces shall e OPERABLE: :

a. Two physically independent circuits between th' ffsite transmisse I network and the onsite Class 1E distribution stem, and

b. Separate and independent diesel generators * , 1A, 2A and IB with:

l 1.. For diesel generator 0, lA and 2A: ,

a) A separate day fuel tank con ining a minimum of e 250 gallons of fuel. '

b) A separate fuel storage stem containing a minimum of f 31,000 callons of fuel.

2. For diesel gt.nerator 18, separate fuel storage tank / day tank' containing a minimum of ,750 gallons of fuel.

3. A separate fuel transf r pump. ,

APPLICABILITY: OPERATIONAL CONDIT NS 1, 2, and 3.

ACTION:

a. With either one of site circuit or diesel generator 0 or 1A of the above required A . electrical power sources inoperable, demonstrate ,

the OPERABILIT of the. remaining A.C. sources by performing Surve11-lance Require nts 4.8.1.2.la within I hour, and 4.8.1.ll2a.4,

'for one die: I generator at a time, within eight hours, and at least once per 81ours thereafter; restore at least two offsite circuits and dies generators 0 ard 1A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTD within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months ,

b. Wi one offsite circuit and diesel generator 0 or 1A of the above quired A.C. electrical power sources inoperable, demonstrate the PERABILITY of the remaining A.C. sources by performing Surveillance Requirements 4.8.1.1.1a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , and 4.8.1.1.2a.4, for one diesel generator at a time, within six hours, and at leat,t once per 8 hotsrs thereafter; restore at least one of the inoperabir A.C.

sources to OPERABLE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or be in at least HOT 4 SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore at least two offsite circuits and 1 diesel generators 0 and 1A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

See page 3/4 8-1(a)

I LASALLE-UNIT 1 3/4 8-1 Amendment No. 49

i S/4 S ELICTRICPL POWER SYSTEMS-3/4.6.1.A.C. SOURCES ,

p% J

' ,". s A.C. SOURCES - CpERATING

' LIMITING CONDITIONS FOR OPERATION J J

3.8.1.1 As a minimum, the following A.C. electrical power sources shall se i OPERABLE:

a. . Two physically independent circuits between the offsite transmission '

network and the onsite Class 1E distribution system, and

b. Separate and independent diesel generators

0, 1A, 2A and 1B with:

1. For dier.el generator 9, 1A and 2A i

a) A separate day fuel tank containing a minim.tm of 250 gallons of fuel.

b) ,

A separate fuel storage system containing a minimum of 7 31,000 gallons of fuel.

2, For diesel generator 1B, a separate fuel storage tank and a day tank containing a combined minimum of 29,750 gallons of fuel.

h 3. A separate fuel transfer pump.

ApDLICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3. T.: n ACTIDN :

a. With one offsite circuit of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within' 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. . If any of the diesel generators have not been successfully tested within the past 24' hours, demonstrate their OPERABILITY by performing r Surveillance Requirement 4.8.1.1.2.a.4 for each such diesel generator, separately, within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore the offsite circuit-to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN' I within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . ,

b. With either the 0 or 1A diesel gene.rator inoperable, demonstrate the OPERABILITY of the above required A.C. offsite sources by performing Survei? lance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per S hours thereafter. If the c'iesel generator became inoperable due to any cause other than, preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE

...

See page 3/4 8-la.

3/4 8-1 pR0p0 SED AMENDMENT Lt.SALLE-UNIT 1 4

2h nr .

1 y .. ELEl!TRICAL POWER SYSTEMS e ,

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LIMITING CONDITION FOR OPERATION (Continued)

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[ *For the purpose of completing ~ technical specification surveillance requirements 4.8.1.1.2d.1 ana 4.8.1.1.2f.1, as part of a pre planned .

preventive mainte program, on the 0 diesel generator the requirements of !

action statement re modified to:

' 1. - techniem1 ana ication Eliminate surveillancethe requirement requirements for performing 4.8.1.1.la and (3 A 1.1.2amd7 on each !

operable AC source, immediately and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter, when the 0 diesel generator.is declared inoperable. . l

2. Allow an additiona V 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months in excess of the 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed in action statement or the 0 diesel generator to be inoperable. ,

Provided that the following conditions are met:

A. Unit 2 is in operational condition 4 or 5 or defueled prior to

.taking the O diesel generator out of service: (

B. Surveillance requirements 4.8.1.1.la and 4.8.1.1.2a.4 are-successfully completed, for the offsite power sources and the 1A and 3 2A diesel generators, within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months print to removal of the 0 :

diesel generator from service.

C. No maintenance is performed on the offsite circuits or the 1A or 2A !

diesel generators,.while the O dicsal generator is inoperable.

D. Technical specification requirement 4.8.1.1.la is performed daily, while the O diesel generator is inoperable. ,

E. The control circuit for the unit cross-tie circuit breakers between buses 142Y and 242Y are temporarily modified to allow the breakers to be closed with a diesel generator feeding the bus, while the O diesel generator is inoperable.

The provisions of technical specification 3.0.4 are not applicable.

LASALLE-UNIT 1 3/4 8-la Amendment No. 63

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ELECTRICAL POWER SYSTEMS 8EoL. ACE WLTH LIMITING CON 0! TION f0R OPERATION (Continued) s j ACTION (Continued) l L ,

c. With both of the above required offsite circuits inoperable, mon-strate the OPERABILITY of the remaining A.C. sources by perf ing u Surveillance Requirement 4.8.1.1.2a.4, for one diesel gene tor at +

l a time, within eight hours, and at least once per 8 hcur thereafter, unless the diesel generators are already operating; res re at least i

one of.the inoperable offsite circuits to OPERABLE st us within l

24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT SHUTDOWN within the t 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . .

With only one offsite circuit restored to OPERABLE tatus, restore at least two offsite circuits to OPERABLE status thin 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months s- ,

from time of initial loss or be in at least HOT HUTDOWN within the '

next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the ollowing 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . i i

d. With diesel generators 0 and 1A of the abo required A.C. electrical power sources inoperable, demonstrate th PERABILITY of the remain- .

ing A.C. sources by performing M rveill ce Requirements 4.8.1.1.la t within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and 4.8.1.1.2a.4, for o diesel generator at a L time, within four hours and at least nce per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter;

} restore at least one of the inoper e diesel generators 0 and 1A to .

OPERABLE status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or e in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD S within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Restore both diesel generator and 1A to 0PERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initia loss or be in at least HOT SHUTDOWN l within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 'a in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months ,

e. With. diesel generator of the above required A.C. electrical power sources inoperable, monstrate the OPERABILITY of the remaining !

A.C. sources by per orming Surveillance Requirements 4.8.1.1.la !

within I hour, an 4.8.1.1.2a.4, for one diesc1 generator at a l !

l. time, within si hours, and at least once.per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 'thereafter; restore the i erable diesel generator 18 to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or clare the HPCS system inoperable and take the ACTION required b Specification 3.5.1. ;

i L f. With di el generator 2A of the above required A.C. electrical power !

sourc inoperable, demonstrate the OPERABILITY of the remaining L

, A. C. ources by performing Surveillance Requirements 4.8.1.1.la and

4. .1.2.a4, for diesel generator 1A, within one hour, and at j

! I st'once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; restore the inoperable diesel

- enerator 2A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare standby g'

gas treatment system subsystem 8, Unit 2 drywell and suppression chamber hydrogen recombiner system, and control room and auxiliary electric equipment room emergency filtration system train B inoperable

, and take the ACTION required by Specifications 3.6.5.3, 3.6.6.1.,

and 3.7.2; continued performance of Surveillance Requirements l.

i 4.8.1.1.la. and 4.8.1.1.2a.4 for diesel generator 1A is not required l providad the above systems are delcared inoperable and the ACTION of their respective specifications is taken.

LA SALLE - UNIT 1 3/4 8-2 Amendment No. 18

l h '3/4.8 ELECTR! CAL'cCWER SYSTEMS j

3/4.8.1'A.C. SOURCES 1

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5.')h A.C. SOURCES - OPERATING ;

LIMITING CONDITIONS FOR OPERATION 1

l diesel generators, separately, by performing Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months *. Restore the diesel l generator to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT )

SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . I

c. With one offsite circuit of the above-required R.C. sources and ;

diesel generator 8 or 1A of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sourcos by parforming Surveillance Requirement 4.8.1.1.1.a within- 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If.the diesel generator became inoperable due to any cause other than preplanned preventive maintenance or testing, demonstrate the ,

OPERABILITY of the remaining OPERABLE diesel generators, separately, by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months *. Restore at least one of the inoperable A.C. sources to OPERABLE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or be in at'least HOT SHUTDOWN' ,

within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following ;

24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore at least two offsite circuits and diesel- i

(). generators 9 and 1A to'0PERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time .

of initial loss or be in at'least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 'and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

I d. With diesel generator 1B of the above required A.C. electrical power i

sources inoperable, demonstrate the OPERABILITY of the offsite A.C sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at 'leasf~ence'jer 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the diesel' >

generator became inoperable due to any cause other than preplanned ;

Ll- preventive maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE diesel generators, separately, by performing Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months *. Restore j'a diesel generator 1B to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare

the HPCS system inoperable and, take the ACTION required by.

specification 3.5.1.

e. With both of the above required offsite circuits inoperable, demonstrate thw OPERABILITY of the remaining A.C. sources, I reparately, by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 nours unless the diesel generators are already operating. >

Restore at least one offsite circuit to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , or be'in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . '

With only one offsite circuit restored to OpFRABLE status, restcre 1' .

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY. The provisions of Specification 3.0.2 are not applicable.

LASALLE-UNIT 1 3/4 8-2 PROPOSED AMENDMENT a-

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ELECTRICA'L p0WER SYSTEMS ,

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U';/ LIMITING CONDITIONS FOR OPERATION (Continued) !

i ACTION (Continued) i at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 "

hours. A successful test (s) of diesel generator OPERABILITY per Surveillance Requirement 4.8.1.1.'2.a.'4, performed under this ACTION :

statement for the OPERABLE diesel generators, satisfies the diesel generator test requirements of A'; TION statement a. ,

f. With -diesel generators 8 and 1 A of the above required A.C. .

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electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by pe'rforming Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter, ,

and Surve111ance Requirement 4.8.1.1.2.a.4 for the 1B and 2A diesel !

,, generators, separately, within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months *. Restore'at least one of ,

j' the inoperable diesel generators 8 or 1A to OPERABLE status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months , or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and

- in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore both diesel b generators 8 and 1A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , frotu the time of initial' loss, or be in at least HOT SHUTDOWM,wi. thin.the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the followin,g 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

g. With diesel generator 2A of the above required A.C. electrical power 5 sources inoperable, demonstrate the OP5RABILITY of the remaining A.C l !

sources by parforming Surveillance Requirement 4.8.1.1.1.a within 1 hours1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per b hours thereafter. If the EA diesel gen'eiator became inoper'able due to any cause other than preplanned

preventive maintenance or testing, demonstrate the OPERABILITY of the 1A diesel generator by performing Surveillance Requirement 4.8.1.1.2.a.4, within 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months se. Restore the inoperable diesel generator ?A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare standby '

gas treatment system subsystem B, Unit 2 drywell and suppression chamber hydrogen recombiner system, and control room and auxiliary electric equipment room emergency filtration systeri train B inoperable, and.take the ACTION required by specifications 3.6.5.3, 3.6.6.1, and 3.7.2. Continueid performance of Survei: lance Requirement 4.8.1.1.1.a is not required previded.the above 'systoms are declared inoperable and the action of their respective specifications is taken.

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY. The provisions of

> Specification 3.0.2 are not applicable.

LASALLE-UNIT 1 3/4 8-2a PROPOSED ' AMENDMENT 4

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'- t ELECTRICAL.PCWER SYSTE5S' ch'

't./ LIMITING CONDITIONS FOR OPERATION (Continued) i ACTION (Continued) t

h. .With one offsite circuit of the above required A.C. electrical power sources and diesel generator 1B inoperable, apply the requirements of ACTION a and d specified above. ,

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With either diesel generators e or iA inoperable and diesel .

generator 1B inoperable, apply the requirements of ACTION b and d specified above.

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With one offsite circuit of the above required A.C. electrical power ,

sources and diesel generator 2A inoperable, apply the requirements ^

of ACTION a'and g specified above.

k. With diesel generator 18 and diesel generator 2A inoperable, apply the requirements of ACTION d and g sp9cified above.

1. With diesel generator 9 and diesel generator 2A inoperable, apply [

the requirements of ACTION b and g specified above.

kh LAJALLE-UNIT 1 3/4 8-2b PROPOSED AMENDMENT )

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4 3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1 and 3/4.8.2 A.C. SOURCES and ONSITE POWER DISTPIBUTION 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 0.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' restricticn upon continued facility operation TNS MA commensurate with the level of degradation. #The OPERA 8ILITY of the power sources are consistent with the initial condition assumptions of the accident analyses and are based upon maintaining at least Division I or II 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 one of the two cnsite A.C. sources. Division III supplies the high pressure core spray (HPCS) system only. .

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 j capability is available for r.onitoring and maintaining the unit status. I The surveillance requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory l-l Guide 1.9, " Selection of Diesel Generator Set Capacity for Standby Power Sup-plies," March 10, 1971, with the exception noted in Appendix B to the FSAR, and Regulatory Guide 1.108, " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear f'ower Plants," Revision 1, August 1977. !

The diesel generator fast start surveillance requirements, based on a PRA i

' study, are sufficient to demonstrate the onsite A.C. power system capability to mitigate the consequences of the design basis event for the plant, i.e. , large LOCA coiv.? dent with e loss-of-offsite power, while minimizing the mechanical ,

l stress aad wear on the diesel engine.

The imrvel11ance requirements for der.onstrating the OPERABILITY of the unit batteries are in accordance with the recommendations of flegulatory Guide 1.129, " Maintenance Testing and (!eplacement of Large Lead Storage Batteries for Nuclear Power Plants " February 1978, and IEEE Std 450-1980, "IEEE Recommended Practice for Maintanance, Testing, and Replacement of Large Lead Storage Batteries for Generating Station and Substations."

Verifying average electrolyte temperature above the minimum for which the battery was sized, total battery terminal voltag: onfloat charge, connection resit,tanca values and the performance of batta y service and discharge tests ensures the effectiveness of the charging system, the ability to handle high discharya rates and comparec the battery capacity at that time with the rated capacity.

LA SALLE - UNIT 1 8 3/4 8-1 Amendment No.16

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! Action statements'have been included-in the specification to cover all situations where either one AC source or a combination of two AC sources are inoperable. Action statements c, e, and f are intended to be followed to completion once entered and should not be exited until both AC sources are restored. 1 l

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3/4.8 EL'ECTRICAL POWER SYSYEMS g gTH 3/4.8.1 A.C. SOURCES g (yb A.C. SOURCES - OPERATING LIN!YING CONDITION FOR OPERATION ;

3. 8.1.1 As' a minimum, the following A.C. slectrical power sou s shall be !

OPERA 8LE: ;

I

a. Two ptysically independent ciri:uits between the o site transmission ,

network and the onsite Class 1E distribution sys , and '

, b. Separate and independent diesel generators

0 , 2A and 28 with: l ,

L , For diesel generator 0, 3A and 2A: ;

a) A separata day fuel tank contai ~ng a minimum of :

L 250 gallons of fuel. .

I b) A separate fuel storage sys containing a minimum of [

31,000 gallons of fuel.

2. For diesel generator 28 a ses rate fuel storage tank / day tank containing a minimum of 2g 7 ' gallons of fuel.

l J. A ssparate fuel transfer o .

l APPLICABILITY: CPERATIONAL CONDITIONS , 2, and 3.

l .

ACTION:

a. With either one offsito ircuit or diesel generator 0 o* 2A of the abeve required A.C. el ctrical power sources inoperable, demonstrate '

the OPERA 8ILITY of remaining A.C. sources by performing Surve11-lance Requirements .4.1.1.1a. within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , and 4.8.1.1.2a.4.,

for one diesel go retor at a time, within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months reafter; restore at least two offsite circuits and diesel gen stars 0 and 2A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at less NOT 5HUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN wi n the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

I b. With one faite circuit and diesel generator 0 or 2A of the above require A.C. electrical power sources inoperable, demonstrate the OPERAB ITY of the remaining A.C. sources by performing Surveillance Requi nts 4.8.1.1.la. within I hour, and 4.8.1.1.2a.4., for one die i generator at a time, within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months , and at least once per 8 urs thereafter; restore at least one of tha inoperable A.C.

urces to OPERA 8LE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or be in at least HOT HUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restc?e at least two offsite circuits and diesel generators 0 and 2A to OPERA 8LE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

ee page 3/4 8-1(a). g LASALLE - UNIT 2 3/4 8-1 Amendment No.16

+. l 3/4. 9 ELEC71 CAL p0WER SYSTEMS 'j

- 3/4. 8.1; A.'C.' SOURCES e A.C. SOURCES - OPERATING l LIMITING CONDITIONS FOR OPERATION ;

a .

3.8.1.1 As a minimum, the following A.C. electrical power sources shall be i OPERABLE: l

a. Two physically independent circuits between the offsite transmission network and the onsite Class 1E distribution system, and 3

b. Separate and independent diesel generators

6,1A, 2A and 2B with:

1. For diesel generator 8, 1A and 2A ,

a) A separate day fuel tank containing a minimum of 250' gallons of fuel. ,

b) A separata fusi etorage s>stom containing a. minimum of >

31,000 gallons of fuel.

2. For diesel generator 28, a separate fuel storage tank and a day ,

. . tank containing a combined minimum of 29,759 gallot.s of fuel. !

D'

3.

A 2eparate fuel transfor pump.

APPLICABILITY: OPERATIONAL CONDITIONS.1, 2, and 3. , ;

BGT1Qlit *

~

a. With one.offsite circuit of the above required A.C. electrical power sources inoperable, demonstrate.the OPERABILITY of the remaining A.C. sources by performing Surve111ance Requirement 4.8.1.t.1.a o within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at .least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If any of the diesel generators have not been successfully tested within the I past 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , demonstrate their OPERABILITY by performing Surveillance Requirement 4.8.1.1.2.a.4 for each such diesel generator, s,eparately, within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore the offsite circuit '

. to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in. COLD SHUTDOWN within the following l 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . ,

i- b. With either the 9 or 2A diesel generator inoperable, demonstrate the l' OPERABILITY of ahe above required A.C. offsite sources by performing i

Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the diesel generator became inoperable due te any cause other then preplanned preventive maintenance oc testing, demonstrate ther OPERABILITY of the remaining OPERABLE l @

See page 3/4 8-la.

LASALLE-UNIT 2 3/4 8-1 pR0p0 SED AMENDMENT i

l2 o

e, , - , ---,-,,,m, ,-,,...,,--,,---an,.,,., . , - , , - . , - . . , - , , _ , . . . , . - - - , , - , - , _ - - - - - - - - . - - - - -

C l u < ;

3 ai? ?

- ELECTRICAL POWER SYSTEMS LINITING CONDITION FOR OPERATION (Continued) i t

[. !

For the purposes of. completing' technical specification surveillance .:

requirements 4 8.1.1.2d.1 and 4.8.1.1.2f.1, as part of a pre planned '

preventative mainten program, on the O diesel generator the requirements of action statements are modified to: , j

'1. Eliminate the requirement for performing technical specification l

. surveillance requirements 4.8.1.1.la and 4.8.1.1.2a.4, on each

operable AC source, immediately and once per 8 hoars thereafter, '1 when'the 0 diesel generator is declared inoperable.; ,;

2. Allow an additions' 96 hours0.00111 days 0.0267 hours 1.587302e-4 weeks 3.6528e-5 months 'in excess of-the 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed in action statement (y or the 0 diesel- generator to be inoperable.

( Provided that the following conditions are met:

F A. Unit 1 is in operational condition 4 or 5 or defueled prior to taking the,0 diesel generator out of service.

B. Surveillance requirements 4.8.1.1.la and 4.8.1.1.2a.4 are "

successfully. completed, for the offsite power sources'and the 1A or

2A diesel generators, within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months prior to removal of the O diesel-generator from service.

C. No maintenance is performed on the offsite circuits or the 1A or 2A

diesel generators, while the O diesel generator is inoperable.

l D. Technical Specification requirer. ants 4.8.1.1.la is performed daily, ;

while the O diesel generator is inoperable.

E. The control circuit for the unit cross-tie circuit breakers between buses 142Y and 242Y are temporarily modified to allow the breakers to be closed with a diesel generator feeding the bus, while the 0 '

I diesel generator is inoperable.

The provisions of technical specification 3.0.4 are not app 1tcable.

LASALLE - Ul;IT 2 3/4 8-la Amendment No. 44 f

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l q ELECTRICAL POWER SYSTEMS g g gg / !

LIMITING CONDITION FOR OPERATION (Continued) PAGE. -

L ACTION: (Continued)

c. With both of the above required offsite circuits inoper e.

L demonstrate the OPERABILITY of the remaihing A.C. sour s by per-l foming Surveillance Requirement 4.8.1.1.2a.4. , for o diesel '

generator at a time, within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , and at least o e per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months

thereafter, unless the diesel generators are alrea operating; E

restore at'least one of the inoperable offsite c e cuits to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT SH DOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . With only one offsite circuit stored to OPERABLE '

stetus, restore at least two offsite circuit to 0PERABLE status within 72 hourn from time of initial-loss o be in at least H0T ;

SHUTDOWN within the nem 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in .D SHUTDOWN within the ;

following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . ,

d. With diesel generators 0 and 2A of th above required A.C. electrical power sources inoperable, demonstrat< the OPERABILITY of the remain- ,

. ing A.C. sources by performing Surv 11ance Requirements 4.8.1.1.la.

within I hour and 4.8.1.1.2a.4., f r one diesel generator at a time, '

within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months and at least once r 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; restore at least one of the inoperable die 1 generatnrs 0 and 2A to OPERABLE status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be i at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUT within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore e

both diesel generators 0.a 2A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months L

L from time of initial loss r be in at least H0T SHUTDOWN within the .

next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COL SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . ,

e. With diesel generator 8 of the above required A.C. electrical power sources inoperable, nstre.te the OPERABILITY of the remaining A.C. sources by per orming Surve111aner Requirements 4.8.1.1.la. '

within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , a 4.8.1.1.2a.4., for one diesel generator at a i time, within 6 h rs, and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; !

restore the in arable diesel generator 28 to OPERABLE, status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or lare the HPCS system inoperable and take the ACTION required by ecification 3.5.1.

f. With dies generator IA of the above required A.C. electrical power sources operable, demonstrate the OPERABILITY of the remaining A.C. se ces by perfoming Surveillance Requirements 4.8.1.1.la.

withi 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , and 4.8.1.1.2a.4. for diesel generator 2A, within 2 ho s, and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; restore the in-op able diesel generator 1A to OPERA 8LE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or t d lare standby gas treatment system subsystem A, Unit 1 drywell and ppression chamber hydrogen recombiner system, and control room and auxiliary electric equipumnt room emergency filtration system train A inoperable and take the ACTION required by Specifications 3.6.5.3, 3.0.6.1, and 3.7.2; continued performance of Surveillance Requirements 4.8.1.1.la. and 4.8.1.1.2a.4. for diesel generator 2A is not required provided the above systems are declared inoperable and the ACTION of their respective specifications is taken.

SALLE - UNIT 2 3/4 8-2

, . - - - - . .- .. - . . - - - - - - . - . . ~ - - . . - . - - .-

,' (i, '

-3/4.8 ELECTRICAL'p0WER SY3TEMS f '

)

\

, 3/4.'8.1 A.C'. SOURCES.

/:s

' V2 A.C. - SOURCES - OPERATING LIMITING CONDIT10CS FOR OPERATION !

)

diesel generators, separately, by performing Surveillance Requirement 4.8.1.1.2. a.4 within 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months se. Restore the diesel j generator to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT i SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the i following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

c. With one offsite circuit of the above-required A.C. sources and diesel- generator 9 or 2A of tho' above required A.C. electrical power ;

sources inoperable, demonstrate the OPERA 81LITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the '

pl diesel generator became inoperable due to any cause other than

j c preplanned preventive maintenance or testing, demonstrate tho' '

OPERA 81LITY of the remaining OPERABLE . diesel generators, separately, by performing Surve111ance Requirement 4.8.1*.1.2.a.4 within 8

+

hourse. Restore at least one of the inoperable'A.C. sources to.

l OPERABLE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore at least two offsite circuits and diesel:

/ph generators 9 and 2A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time .

D of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months aus in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .' -

l d. With diesel generator 28 of the above required. A.C. electrical power sources inopwable, demonstrate the OPERABILITY of the offsite A.C sources by performing Surveillance Requirement 4.8.1.1.1.a within i hour and at least once per 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months thereafter. 'If the diesel' -l generator bortame inoperable due to any cause other than preplanned preventive .aintenance -or testing, demonstrat's the OPERABILITY of the remaining OPERABLE diesel generators, separately, by performing

Surveillance Requirement 4.8.1.1.2.a.4 within 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months se. Restore i

diesel generator 2B to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare u' the HpCS system inoperable and take the ACTION required by specification 3.5.1. j L

i l

e. With both of the above required offsite circuits inoperable, i L

. demonstrate the OPERABILITY of the remaining A.C. sources, j L separately, by' performing Surveillance Requirement 4.8.1,.1.2.a.4

'~ within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months unless the diesel generators are 'aiready operating.

Restore 'at least.one offsite circuit to OPERABLE status within 24 '

L hours, or be in at least HOT SHUTDOWN within the next 11 hours1.273148e-4 days 0.00306 hours 1.818783e-5 weeks 4.1855e-6 months .

With only one offsite circuit restored to OPERABLE status, restore

This test isi required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY. The provisions of Specification 3.0.2 are not applicable.

3/4 8-2 pR0p0 SED AMENDMENT LASALLE-UNIT 2 h 't

Ol j

.: d ILCCTRICAI pCWER SYSTE!'tS

.3...

. $i LIMITING CONDITIONS FOR OPERATION-(Continued)

ACTION (Continued) at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months ;

from the time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 ,

hours. A successful' test (s) of diesel generator OPERABILITY per

- Surveillance Requirement; 4.8.1.1.2.a.4, performed under this ACTIDM

. statement for the OPERABLE diesel generators, satisfies the diesel generator test requirements of ACTION statement a. ,

, f. With diesel generators e and 2A of the atave required A.C.

.. electrical power sources. inoperable, demonstrate the OPERABILITY of. :

,- the remaining A.C. sources by performing Surveillance Requirement 4.3.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at' least 'once per 8 hcurs thereafter, i l.

and Surveillance Requirement 4.8.1.1.2.a.4 for the 2B'and 1A diesel <

generators, separately,Jwithin 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months se. Restore.at least one of .

the inoparable diesel generators 8 or 2A to. OPERABLE status within 2 ;

l hours, or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and' ll in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore tioth diesel !

,.s generators 6 and 2A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , frosethe _

[g; g . time of initial loss, or be in at least HOT SHUTDOWN within the next ..

l 12 hoca and in' COLD SHUTDOWN within the fo11owing.24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

t \u.

g. With diesel generator 1A of the above required A.C.' electrical power

. sources inoperable, demonstrate the OPERABILITY of the remaining A.C sources by performing Surveillance' Requirement 4.8.1.1.1.a within 1 -

hours and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the 1A diesel generator became insperable due to any cause other than peoplanned prevemtive maintenance or testing, .descr< strate the OPERABILITY of

- the 2A diesel generator by performing Surveillance Requirement 4.8.1.1.2.a.4,~*within 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months se. Restore the inoperable diesel generator 1A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or' declare standby gas treatment system subsystem A, Unit 1 drywell and suppression chamber hydrogen recombiner system, and control room and auxiliary .

electric equipment room emergency filtration system train A inoperable, and take the~ ACTION required by specifications 3.6.5.3, 3.6.6.1, and 3.7.8. Continued performance of Surve111ance Requirement 4.8.1.1.1.a is not required provided the above systoms are declared inoperable and the action of their respective I

specifications is taken.

1' , t l

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY. The provisions'of Specification 3.0.2 are not applicable.

LASALLE-UNIT 2 3/4 8-2a pR0p0 SED AMENDMENT J'

,74 .

1 ELECTRICAL'p0WER SYSTEMS

. ;. LIMITING CONDITIONS FOR OPERATION (Continued) -

i ACTION . (Continued) l l

l

h. With one offsite circuit of the above required A.C. electrical power. ,

sources and diesel generator 2B inoperable, apply the requirements -

of ACTION a and d specified above.

1.- With either diesel generators 9 or 2A inoperable and diesel T generator 29 inoperable, apply the requirements of ACTION b and d

.specified above. .

>, i With!one offsite. circuit of the above required A.C. electrical ~ power

,3 sour:es.and diesel generator 1A inoperable, apply the requirements ,

of ACTION a and g specified above.

k. With diesel generator 2B and diesel generator 1A inoperable, apply the requirements of ACTION d and g specifiN.above. -

o

1. With diesel generator.8 and diesel generator 1A. inoperable, apply the requirements of ACTION b and g specified above.

.f.

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8 p

LASALLE-UNIT 2 3/4 8-2b PRCp0 SED AMENDMENT A

.I

3/4.8 ELECTRICAL POWER SYSTEMS !

BASES 3/4.8.1 and 3/4.8.2 A.C SOURCES and ONSITE POWER DISTRIBUTION SYSTEMS The OPERABILITY of the A.C. and D.C. power sources and associated distri- I bution 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 indenndent 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 Part 50.

MERT 4 The ACTION requirements speci ed for the levels of degradation of the power sources provide restrictio upon continued facility operation commensurate with the level of degradation. he OPERABILITY of the power sources are consis-tent with the initial condition assumptions of the accident analyses and are based upon maintaining at least Division I or II 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 one of the two onsite A.C. sources. Division III supplies the high pressure core spray (HPCS) system only. -

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 cendition for extended time periods and (2) sufficient instrumentation end control capability it, 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 l Guide 1.9, " Selection of Diesel Generator Set Capacity for Standby Power Supplies," March 10, 1971, with the exception noted in Appendix B to the FSAR, l

and Regulatory Guide 1.108, " Periodic Testing of Diesel Generator Units Used l' as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1,

. August 1977.

The diesel generator fast start surveillance requirements, based on a PRA study, are sufficient to demonstrate the onsite A.C. power system capability to mitigate the consequences of the design basis event for the plant, i.e., large l

LOCA coincident with a loss of-offsite power, while minimizing the mechanical l stress and wear on the diesel enginc.

The surveillance requirements for demonstrating the OPERABILITY of the unit batteries are in accordance with the recommendations of Regulatory Guide 1.129, " Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978, and IEEE Std 450-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Station and Substations."

Verifying average ele:trolyte temperature above the minimum for which the battery was sized, total battery terminal voltage onfloat charge, connection resistance values and the performance of battery service and discharge tests ensures the effectiveness of the charging system, the ability to handle high discharge rates and compares the battery capacity at that time with the rated capacity.

1 LA SALLE - UNIT 2 B 3/4 8-1

t 7

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i INSERT A ,

1 Action statements have been included in the specification to cover all situations where either one AC source or a combination of two AC sources i are. inoperable. Action statements c, e, and f are' intended to be followed to completion once' entered and should not be exited until'both'AC sources' are restored.

?

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AHACIMGLC SLGRIEICANT HAZARDS CONSIDERATIM i

l Commonwealth Edison has evaluated the proposed Technical Specification ,

amendment and determined that it does not represent a significant hazards '

consideration. Based on the criterla for defining a significant hazards consideration established in 10 CFR 50.92, operation of LaSalle County Station ;

Units 1 and 2 in accordance with the proposed amendment will not: "

1); Involve a significant increase in the probability or consequences of an accident previously evaluated because: )

The' proposed amendments contained in this submittal will help to enhance diesel generator reliability by minimizing the degradation of the diesel -

generators caused by excessive testing. Since the reliabilit) of the I diesel generators is not degraded, and may actually be improved by the I proposed change, the probability or consequences of an accident previously evaluated will not be increased.

2) Create the possibility of a new or different kind of accident from any accident previously evaluated >because

Limiting the number of diesel generator starts required by the Technical Specifications does not dagrade the reliability of.the diesel generators, therefore, the possibility o.' a new or different kind of accident is not created.

3) ' Involve a significant reduction in the margin of safety because:

The proposed amendments do not degrade the reliability of the diesel generators, therefore, this proposal does not involve a significant reduction in the margin of safety. Since the proposed amendment will reduce the degradation of the diesel generators caused by excessive testing, the margin of safety may actually be improved.

0328T:8

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l Guidance has been provided ic "/inal Procedures and Standards on No l i.

Significant Hazards Considerations", Final Rule, 51 FR 7744, for the applica- I l tion of standards to license change requests for determination of the existence l

l. of significant hazards consideratiors. This document provides examples of l amendments which are and are not considered likely to involve significant i hazards considerations. This proposal is considered to be an administrative i change and, as such, does no.t involve a significant relaxation of the criteria l l used to establish safety limits, a significant relaxation of the bases for the limiting safety system settings, or a significant relaxation of the bases for ,

limiting conditions for operation. Therefore, based on the guidance provided (

in the federal Register and the criteria established in 10 CFR 50.92(e), the l proposed change does not constitute a significant hazards consideration. I l

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