Text

Amends 72 & 56 to Licenses NPF-11 & NPF-18,respectively, Clarifying Requirements for Frequency of Fast Starting & Loading of Diesel Generators (DG) from Ambient Conditions & to Conform W/Dg Test Schedule Recommendations
	ML20034B432
Person / Time
Site:	LaSalle ; (NPF-11-A-072, NPF-11-A-72, NPF-18-A-056, NPF-18-A-56)
Issue date:	03/15/1990
From:	Jocelyn Craig; Office of Nuclear Reactor Regulation
To:	;
Shared Package
ML20034B433	List: ML20034B432; ML20034B435;
References
	NUDOCS 9004270149
	Download: ML20034B432 (36)
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- "49 UNITED STATES -

. NUCLEAR REGULATORY COMMISSION-e.

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COMMONWEALTH EDISON COMPANY DOCKET N0. 50-373 LASALLE COUNTY STATION UNIT 1.

AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 72-License No. HPF-11 1.

The Nuclear Reculatory Commission (the Comission'or the NRC) has found; that:

A.

The application for amendment filed by the Comonwealth Edison Company (thelicensee),datedJuly 28, 1987,-supplemented March 16 and June 23, 1989, and, further clarjfied July 3 and October 26, 1989 and February 26, 1990, comply with the standards and requirements of-the Atomic Energy Act of 1954 as: amended (theAct),~andthe Commission'sregulationssetYorthin10CFRChapterI; B.

The facility will operate-in conformity with the application, the-provisions of the Act,.and the regulations of the Comission;.

C.

There is reasonable assurance: (1)thattheactivitiesauthorizedby this amendment can be conducted-without endangering the' health and-safety of the public, and (ii) that such activities will be~ conducted-in compliance with the Comission's regulations set forth in 10-CFR Chapter I;-

D.

The issuance of this amendrent will not be inimical:to the t.omon defense and security or to the health and safety of the-public; and E.

The issuance of this amendment is.in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.

2.

Accordingly, the license is amended by changes!to the Technical Specifica-tions as indicated in the enclosure to this license amendment and: paragraph 2.C.(2) of the Facility Operating License No. NPF-11 is hereby amended to' read as follows:-

(2) Technical Specifications and Environmental Protection Plan The Technical Specifications contained in Apperdix A as revised through Amendment No. 72, and the Environmenta1' Protection Plan contained in Appendix B, are hereby incorporated in-the~ license. The licensee shall=

operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan, f,g[2{ggg gg6bb!73 p

PDC l

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i 2.

- 3 3.

This amendraent is effective upon date of issuance.

L F0 -THE NUCLEAR REGULATORY COMMISSION-

- f' : John W. Craig, Director-f

. Project Directorate III _Divis' ion of Reactor Projects - III,

'e IV, V and Special Projects Office of Nuclear. Reactor Regulation i

Enclosure:

G Changes to the Technical 4 -

Specifications-

}f f

Date of-Issuance:

March 15, 1990 1

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ENCL 0sukt TO LICENSE AMENDMLMi-H0. 72 FACILITY OPER'ATING LICENSE NO. NPF DOCKET NO. 50-373 4

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P.eplace the followin the enclosed pages. g pages of the Appendix "A" Technical Specifications with-l The revised pages arefidentified b contain a vertical line indicating the area of change. y amendment number and REMOVE INSERT 3/4 8-1 3/4 8-1 3/4 8-la 3/4 8-la 3/4 8-2 3/4 8-2' 4

1/4 8-2a*

3/48-2b*

3/4 8-3 3/4 8-3 i

t 3/4-8-4

'3/4 8-4 3/4 8 5

.3/4 8-5 3/4 8-6 3/4 8'-6 3/4 8-7 3/4 8-7 3/4 8-7a*

3/4 8-7b*

B 3/4 8-1 B 3/4 8-1 B 3/4 B-2 B 3/4 8-2 r

B 3/4 8-3*

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New Page i

'3/4.8 ELECTRICAL POWER SYSTEMS 3

3/4.8.1 A.C. SOURCES-A.C. SOURCES - OPERATING LIMITING CONDITION FOR OPERATION 3.8.1.1: As a minimum, the following A.C. electrical power sources shall be OPERABLE:

Two physically. independent circuits between the offsite transmission a.

network and the onsite Class IE distribution system,.and b.

' Separate and independent diesel generators

0, lA, 2A'and 18 with:-

1.

For diesel generator 0, lA and 2A:

a)

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

b)

A separate fuel storage system containing:a minimum of 4

31,000 gallons of fuel.

2.

For diesel generator IB, a separate fuel' storage tank and a day tank containing a minimum of 29,750 gallons of fuel.

l' 3.

A separate fuel transfer pump.

APPLICABILITY:

OPERATIONAL CONDITIONS ~1, 2,.and 3.

ACTION:

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

sources inoperable, demonstrate the OPERABILITY of the remaining i

A.C. sa rces_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 l

the diesel generators have not-been successfully tested within the t

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, separately, within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . LRestore 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_ hours 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 generator inoperable, demonstrate the OPERABILITY of the above required A.C. offsite sources by performing-Surveillance Requirament 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 there:tfter.

If the din el generator became inoperable due to any cause other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE 1

See page 3/4 8-1(a).

LASALLE-UNIT 1 3/4 8-1 Amendment No. 72 l

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l ELECTRICAL POWER SYSTEMS I

' LIMITING CONDITION FOR OPERATION (Continued) l i

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'1

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 pitraed preventative maintenance program, on the.0 diesel generator the requirements of action statements b are modified to:

l:.

1.

Eliminate the requirement for performing technical. specification' surveillance requirements 4.8.1.1.la on each operable;ACLsource, immediately and once per 8l hours thereafter, when'the 0 diesel' generator is declared' inoperable.

i 2.

Allow an additional 96 hours0.00111 days 0.0267 hours 1.587302e-4 weeks 3.6528e-5 months in excess"of the-72 hours allowed in action statement b for the O diesel generator.to be inoperable.-

Provided that the following conditions are met:

e A.

Unit 2 is in operational condition 4 or 5 or defueled prior to taking the O diesel generator out of ~ service.

i B.

Surveillance requirements 4.8.1.1.la and 4.8.1.1;2a.4 are, i

successfully completed, for the offsite power sources-and the 1A or i

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 0

)

diesel generator from service, 1

C.

No maintenance is performed on the offsite circuits or.the 1A or 2A diesel generators, while the O diesel generator isEinoperable.

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. 72

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-LIMITING CONDITION FOR OPERATION (Continued) l A,CTION: (Continued)-

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'0PERABLE status within'72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least H0T-l 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 . ' '

l' With.one offsite circuit of the above-required A.C. sources and c.

i diesel generator 0 or 1A of_ the above. required A.C.: electricaF power sources inoperable, demonstrate the OPERABILITY of the remaining.

A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a -

l within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at'least once per 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months s-thereafter.

If the' diesel generator-became inoperable due'.to any cause:other than i

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 i

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

Restore at least two offsite circuits and diesel-l 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~

j hours and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months ; d.

With diesel generator IB of the above required A.C. electricalt power 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 least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter.

If the dieseli generator became inoperable due to any cause other than preplanned j

i preventive maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE. diesel generators' separately, b 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 *y performing l

diesel generator IB to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare Restore the HPCS system inoperable and take the ACTION required by specification 3.5.1.

i-e.

With both of the above required offsite circuits inoperable, demonstrate the OPERABILITY of the remaining-A.C.-sources, i

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 already operating.

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

With only one offsite' circuit restored to OPERABLE status, restore

This test is required to be completed regardless of when the inoperable diesel generator is restored-to 0PERABILITY.

The provisions of Specification 3.0.2-are not applicable.

t.ASALLE-UNIT 1 3/4 8-2' Amendment No. 72

ELECTRICAL POWER SYSTEMS

_ LIMITING CONDITIONS FOR OPERATION (Continued) l ACTION (Continued) at least two offsite circuits to OPERABLE status within 72 bours 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 . 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 ACTION statement a.

f.

With diesel. generators 0 and 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 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, i

and Surveillance Requirement 4.8.1.1.2.a.4 for the IB 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 0 nr 1A to OPERABLE status within 2

1' 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 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 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 a

time of initial loss, or be in at least HOT' SHUTDOWN within the next l

12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in C0'O SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

g.

With diesel gener..'

2A of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C..

sources by cerforming Surveillance Requirement 4.8.1.1.1.a within-1 hour and at.least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter.

If the 2A diesel-generator became inoperable 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 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months *.

1 Restore the inoperable diesel generator 2A 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 3

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 Requirement 4.8.1.1.1.a'is not required provided the above-systems 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.

3.0.2 are not applicable.

The provisions of Specification LASALLE-UNIT 1 3/4 8-2a Amendment No. 72

ELECTRICAL POWER' SYSTEMS LIMITING CONDITIONS FOR~0PERATION (Continued)

ACTION (Continued) 4 h.

With one offsite circuit of the above required A.C. electrical power sources and diesel generator 1B inoperable, apply the requirements:

L of ACTION a and-d specified above.

j i.

With either diesel generators 0 or 1A inoperable and diesel i

~

l generator 1B inoperable,. apply the requirements of ACTION b and'd l

specified above.

j.

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

i sources and diesel generator 2A inoperable, apply the requirements of

[

ACTION a and g specified above, k.

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

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With diesel generator 0 and diesel generator 2A inoperable, apply j

the requirements of ACTION b and g specified above.

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q LASALLE-UNIT 1 3/4 8-2b Amendment No.72' 4

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-ELECTRICAL POWER SYSTEMS J

SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the onsite Class 1E. distribution system:shall be:

Determined OPERABLE at least once per 7 days by verifying correct-a.

breaker alignments and indicated power availability, and b.

Demonstrated OPERABLE at least once per 18 months during shutdown by.

manually transferring ~ unit power. supply from the normal circuit to.

the alternate circuit.

1 4.8.1.1.2 Each of the above required diesel. generators shall be demonstrated-OPERABLE:*

In accordance with the frequency specified in Table 4.8.1.1.2-1 onLa a.

i STAGGERED TEST BASIS by::

1.

Verifying the fuel level in the, day fuel tank.

2.

Verifying the fuel level in the fuel storage tank.

3.

Verifying the' fuel transfer pump starts-and transfers fuel from the storage system to the day fuel tank.

4.

Verifying the diesel starts from ambient condition and accelerates-to 900 rpm + 5%, -2% in less than or equal to 13 seconds.** -The generator voltage and frequency shall be 4160 1-150. volts and 60 + 3.0, -1.2 Hz.within 13 seconds **"after the start signal.

5.

Verifying the diesel 2400 kW to 2600 kW*** generator.is synchronized, and then loaded to

'i within.60 seconds,** and operates with this [

l-load for at least 60' minutes.

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period..as-recommended by the manufacturer.

- Surveillance testing to verify the diesel. generator start (13 second) and load (60 second) times from ambient conditions shall be performed at least~

L once per 184 days.

All other engine starts. performed for the purpose of meeting these surveillance requirements may be conducted in accordance with' h

warmup and loading procedures, as recommended by the manufacturer,-in order to l

minimize mechanical stress and wear on the diesel generator-caused by fast starting and loading of the diesel generator.

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- - Transients, outside of this load band, do not invalidate the surveillance' tests.

LASALLE-UNIT 1 3/4 8-3 Amendment No.72 L

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ELECTRfCAL' POWER SYSTEMS 1

SURVEILLANCE REQUIREMENTS 6.

Verifying the diese1' generator is aligned to_ provide standby -

power to the associated emergency busses.

7.

Verifying the pressure in all diesel generator air start receivers to be greater than or equal to 200 psig.

b.

At least once per 31 days and after each operation of the diesel 4

where the period of operation was greater than or equal.to I hour by

'i checking for. and removing accumulated water from the day-fuel tanks.-

i At least once per 92 days and from new fuel oil prior to addition to c.

the storage tanks by verifying that a sample obtained~in accordance with ASTM-D270-1975 has a water and sediment content of less than'or equal to 0.05 volume percent and a kinematic viscosity 9 40*C of greater than or equal to 1.9 but less than or equal-to 4.1 when tested in accordance with ASTH-D975-77, and an impurity level of less than 2 mg. of insolubles per 100 al. when tested in accordance i

with' ASTM-D2274-70.

i d.

At least once per 18 months during. shutdown by:

L 1.

Subjecting the diesel to an inspection in accordance with.

procedures prepared in conjunction with its~ manufacturer's

,i recommendations for.this class of standby service.

2.

Verifying the diesel generator capability

to reject a load of-l greater than or' equal to 1190 kW for_ diesel. generator 0, greater than or equal to 638'kW for diesel generators 1A and 2A, and, greater than or equalito 2381_kW for diesel generator 1B while l

maintaining engine speed less than or equal to 75%:of.the-difference between nominal speed and. the overspeed trip'setpoint '

or 15% above nominal, whichever is less.

3.

Verifying the diesel generator capability

to reject a load of l

2600 kW without tripping.

The generator. voltage.1, hall not-exceed 5000 volts during and following the load rejection.

4.

Simulating a loss of'offsite power

by itself, and:

a)

For Divisions 1 and 2 and for tinit 2 Division' 2:

1)

Verifying de energi2ation of the emergency busses and load shedding from the emergency busses.-

\\

All planned diesel generator starts performed for the purpose of meeting

'these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

LASALLE-UNIT 1 3/4 8-4 Amendment No.72

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t ELECTRICAL POWER SYSTEMS.

SURVEILLANCE REQUIREMENTS (Continued)

2)

Verifying the diesel generator starts on the' auto-start signal,-onergizes the emergency busses with permanently connected loads within 13 seconds, energizes the auto-connected loads and operates for greater than or equal to 5 minutes while its generator.is so loaded.

After:

energization, the steady state voltage and frequency-of the emergency busses shall be maintained'at 4160 1 150 volts and 60 2 1.2 Hz during this: test.

b)

For Division 3:

1). Verifying de-energization of the emergency bus.

2)

Verifying the diesel generator starts on the. auto-start signal, energizes the emergency bus with-its loads with-in 13 seconds and operates for greater than or equal to 5 minutes while its generator is so loaded.

After energization, the steady state voltage and frequency of the emergency bus'shall be maintained at 4160 t-150 volts and 60 1-1.,2 Hz during this test.

4 5.

Verifying that on an ECCS actuation test signal..without^1oss of offsite power, diesel generators 0, 1A and IB start

on the auto-start signal and operate on standby for greater than or 1

equal to 5 minutes. The generator voltage and frequency shall-be 4160 + 416, -150 volts and 60 + 3.0, -1.2 Hz within 13 seconds L

after the auto-start signal; the steady state generator voltage i

and' frequency.shall be maintained within these limits during this test.

i 6.

Simulating a loss of offsite power in' conjunction with an ECCS-actuation test signal *, and:-

1 a)

For Divisions 1 and 2:

1)

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

-I

'*All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

LASALLE-UNIT 1 3/4 8-5 Amendment No. 72 m ![pm

ELECTRICAL POWER SYSTEMS SURVEILLANCE RE0VIREMENTS (Continued) 2)

Verifying the diesel generator' starts on the auto-start signal,' energizes-the emergency busses'with permanently connected loads within 13 seconds,. energizes the=

auto-connected emergency loads through the load sequencer and operates for greater than or equal to-5 minutes while its generator is loaded with the.

i emergency loads.

After energization,.the steady state _ voltage and frequency of the emergency busses shall be maintained'at 4160 1 416 volts and 60 1 1.2 Hz during this test.-

b)

For Division 3:

1)

Verifying de-energization of the emergency bus.

2)

Verifying the diesel ~ generator starts on the auto-start signal, energizes the emergency bus with its loads within 13 seconds and operates for greater than or i

equal to 5 minutes while its generator is loaded with the emergency loads. -After energization, the steady state voltage and frequency of the emergency bus shall be maintained at 4160 1 416 volts and 60 t 1.2 Hz-1 during.this test.

'i 7.

Verifying that all diesel generator 0, 1A and IB automatic trips except the following are automatically bypassed on an ECCS actuation signal:

a)

For Divisions 1-and 2 engine overspeed generator differential current, and emergency manua,l'stop, l;

b)

For Division 3 engine overspeed,' generator differential or overcurrent, and entgency manual stop.

2 8.

Verifying the diesel generator operates

for at least 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

During the first 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months sLof this test, the diesel generator shall be loaded to greater than or-equal to 2860 kW and during the remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test, the diesel generator shall be loaded to 2400 kW to 2600 kW.***

The generator voltage and.

frequency shall be 4160 + 420, -150 volts and 60 + 3.0, -1.2 Hz within 13 seconds after the start signal; the steady state i

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

- - Transient, outside of this load band, do not invalidate the surveillance tests.

LASALLE-UNIT 1 3/4 8-6 Amendment No 72

~

ELECTRICAL POWER' SYSTEMS-SURVEILLANCE REQUIREMENTS (Continued)-

I generator voltage and frequency shall:be maintained within these limits during this test. Within 5 minutes after completing this 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months test, perform Surveillance Requirement 4.8.1.1.2.d.4.a).2)-

and b).2) **

9.

Verifying

that.the auto-connected loads to each diesel generator 1 do not exceed the 2000 heur rating of 2860 kW.

10.

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-c)

Be restored to its standby status.

11.

Verifying that with diesel generator 0,ilA_and 1B operating

in a test mode and connected to its, bus:

.H a)

For Divisions 1 and 2, that a simulated ECCS actuation signal overrides the test mode b generator to standby operation y returning the diesel b)

For Division 3, that a simulated trip'of the diesel generator overcurrent relay trips the SAT: feed breaker to bus 143 and that the diesel generator-continues to supply normal bus loads.

12.

Verifying that the automatic load sequence. timer is OPERABLE with the interval between each load block;within i 10% of its-design interval for diesel generators 0 and 1A.

13.

Verifying that the following diesel. generator lockout features

'I prevent diesel generator operation only when required:

1

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine.p.relube period..

.as recommended by the manufacturer.

- If Surveillance Requirement 4.8.1.1.2.d 4a)2) and/or b)2) are not satisfactorily.

a completed, it is not necessary to repeat the preceding 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months test.

Instead, the diesel generator may be operated at 2600 kW for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or until operating temperatura has stabilized.

1 l

LASALLE-UNIT 1 3/4 8-7 Amendment No.72

7 ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)-

a)' Generator underfrequency.

b)

Low lube oil pressure.

c)

High jacket cooling. temperature

' d)-

Generator reverse power, e)

Generator overcurrent.

f)'

Generator loss of field'

.g)

Engine cranking lockout,

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

affect diesel generator interdependence by starting diesel gener-ators 0,1A-and 18 simultaneously,* during shutdown, and verifying that all three diesel generators, accelerate to 900 rpm + 5. -2% in less than or equal to 13 seconds.1

~

f.

At least once per 10 years by:

1.

Draining each fuel oil storage tank, removing the accumulated-sediment and cleanin equivalent solution,g the tank using a sodium hypochlorite or' and j

2.

a Performing a pressure test of those portions of the diesel fuel oil system designed'to Section III, subsection ND, of'the.

ASME Code in accordance with ASME Code'Section-11,. Article.

i IWD-5000.

1 4.B.1.1.3 Reports -.All diesel generator failures, valid or non-valid, shall 4

be reported to the Commission pursuant to Specification 6.6.C within 30 days..

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.

All planned diesel generator starts performed for the purpose of meeting.

these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

LASALLE-UNIT 1 3/4 8-7a Amendment No. 72 l11 1 II I II

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0[

l

-ELECTRICAL POWER SYSTEMS 1

{

SURVEILLANCE REQUIREMENTS (Continued) l TABLE 4.8.1.1.2-1 DIESEL GENERATOR TEST SCHEDULE l

NUMBER OF FAILURES IN NUMBER OF FAILURES IN LAST 20 VALID TESTS

LAST 100 VALID TESTS

TEST FREQUENCY

~

a j

<1

<4 At least onceiper

~

4

31. days l

> 2 **

>5 At least once por

~

7 days i

Criteria for' determining number of failures and' number of. valid tests shall be in accordance with Regulatory Position C.2.e of Regulatory Guide'1.108, Revision 1, August 1977, but determined on a per diesel generator basis.

With the exception of the semi-annual fast start, no starting time require-ments are required to meet the valid. test requiraments of Regulatory Guide 1.108.

For the purposes of determining the required test frequency, the previous test failure count may be reduced to zero if:

^i 1) a complete diesel overhaul to like new condition isscompleted-(provided that the overhaul, including appropriate post-maintenance i

operation and testing, is specifically approved by the-manufacturer), and 2) if acceptable reliability has been demonstrated.. The' reliability criterion shall include the successful completion-of 14-consecutive tests in a single series structured as follows:

ten of these tests shall be performed in accordance with the' a,

routine Surveillance requirements 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5, and b.

four tests shall be performed in accordance with the 184-day testing requirement of Surveillance Requirements 4.8.1.1.2.a.4.

and 4.8.1.1.2.a.5.

If this criterion is not satisfied during the first series of tests,-

1 any alternate criterion to be used to reset.the failure count to zero requires NRC approval.

- The associated test frequency shall be maintained until 7 consecutive failure free demands have been performed AND the number of failures in the last 20 valid demands has been reduced to one.

i

-LASAl.LE-UNIT 1 3/4 8-7b Amendment No. 72 l

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V..

3/4.8'ELECTRICALPOWERSYSTEMJ I

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 distribution systems during operation ensures that sufficient power will be' available to supply the safety related equipment required for'(1) the safe t

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 Part 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.

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 restor.ed.- The OPERABILITY 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 1

power and single failure of one of the two onsite A.C. sources.

Division III s

l 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 maintaired 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.

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 Power Plants," Revision 1, August 1977.

i The diesel generators are equipped.with a pre-lubrication system which..

maintains.a continuous flow of oil to the diesel engine. moving parts while the engine is shutdown.

The purpose of this' system is to increase-long term diesel generator reliability by reducing the stress and wear caused by frequent dry starting of the diesel generator.

The diesel generator pre-lube may be accomplished either through, normal operation of the' installed pre-lubrication I

system, or by manual pre-lubrication of the diesel generator in accordance with j

manufacturers instructions.

Performance of an idle start of the diesel generator is not considered to be a means of pre-lubrication, t

S

\\

i LA SALLE UNIT 1 B 3/4 8-1 Amendment No. 72 i

.a

ELECTRICAL POWER SYSTEMS BASES A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS (Continued)

Analysis has shown that testing, which includes a semi-annual fast start of the diesel generators, is sufficient to demonstrate the capability of the onsite A.C. power systems to mitigate the consequences of the design basis All other engine starts,.for the purpose of meeting the diesel generator surveillance requirements, may be preceded by a warm-up period of low speed operation (idle start), and gradual loading procedures as recommended by the manufacturer, so that the mechanical stress and wear on, the diesel generators is minimized.

The load band of 2400 kW to 2600 kW is provided only to avoid routine overloading of the diesel generators.

Momentary transients,-outside I

the load band, due to changing bus loads do not invalidate the surveillance tests.

1 j

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 electrolyte 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.

Table 4.8.2.3.2-1 specifies the normal limits for.each designated pilot cell and each connected cell for electrolyte level, float voltage and specific gravity.

The limits for the designated pilot cells float voltage and specific

.j gravity, greater than 2.13 volts and 0.015 below the manufacturer's full charge specific gravity or a battery charger current that had stabilized at a low value, is characteristic of a charged cell with adequate capacity.

The normal limits.

for each connected cell for float voltage and-specific gravity, greater than 2.13 volts and not more than 0.020 below the manufacturer's-full charge specific gravity with an average specific gravity of all the connected cells not more than 0.010 below the manufacturer's full charge specific gravity, ensures the OPERABILITY and capability of the battery.

Operation with a battery cell's parameter outside'the normal limit but within the allowable value specified in Table 4.8.2.3.2-1 is permitted for up to 7 days.

During this 7 day period:

(1) the allowable values for electrolyte level ensures no physical damage to the plates with an adequate electron transfer capability; (2) the allowa.ble value for the average specific gravity of all the cells, not more than 0.020 below the manufacturer's. recommended full charge tA SALLE UNIT 1 B 3/4 8-2 Amendment No. 72 I

ELECTRICAL POWER SYSTEMS BASES L

l A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS (Continued) specific gravity, ensures that.the decrease-in rating will be'less than-the safety margin provided in sizing; (3) the' allowable value for an individual cell's speci -

fic gravity ensures that an individual ~ cell's specific gravity will-not be more than 0.040 below the manufacturer's full charge specific gravity and that the overall capability of the battery will be maintained within an acceptable ~11mit; and-(4) the allowable value for an individual cell's-float. voltage, greater than-2.07 volts, ensures the battery's capability to perform its-design function.

l 3/4.8.3 ELECTRICAL EQUIPMENT PROTECTIVE DEVICES; l

Primary containment electrical penetrations and penetration conductors are protected by either de-energizing circuits not required during reactor operation or demonstrating the OPERABILITY of primary and backup overcurrent protection s

circuit breakers by periodic surveillance.

1 The surveillance requirements applicable to lower voltage circuit breakers and fuses provides assurance of breaker and fuse reliability by testing at least one representative sample of each manufacturers brand of circuit breaker and/or fuse.

Each manufacturer's molded case and metal case circuit breakers and/or-fuses are grouped into representative samples which are then tested on a rotat-ing basis to ensure that all breakers and/or fuses are tested.

exists within any manufacturer's brand of molded case circuit breakers and/orIf a wide vari fuses, it is necessary to divide that manufacturer's breakers and/or fuses'into groups and treat each group as a separate. type of breaker or fuses for surveill-ance purposes.

The bypassing of the motor operated valves thermal overload protection continuously or during accident conditions by integral bypass devices ensures that the thermal overload protection will not prevent; safety related valves from performing their function.

The Surveillance Requirements for demonstrating the bypassing of the thermal overload protection continuously and during accident conditions are in accordance with Regulatory Guide 1.106 " Thermal Overload Pro-tection for Electric Motors on Motor Operated Valves", Revision 1, March 1977.

J l

i

.i LA SALLE UNIT 1 B 3/4 8-3 Amendment No. 72

.~..,_

x.. [ (n UNITED STATES 8

NUCLEAR REGULATORY COMMISSION s

5 4 /.

wash WCTON. D. C. 20685

% 6 /j_

e....

-COMMONWEALTH EDISON COMPANY DOCKET,NO. 50-374 1

LASALLE COUNTY STATION, UNIT 2 AMENDMENT TO FACILITY OPERATING LICENSE-i Amen'dment No. 56 License No. HPF 1 1.

The Nuclear Regulatory Comission (the Comission or the NRC) has found i

that:

At The application for amendment filed by the Comonwealth Edison-Company (the licensee)' dated July 28, 1987, supplemented'Harch 16.

and June 23, 1989, and, further clarified July 3 and October _'26.,1989 I

and February 26, 1990, comply with the standards and requirements of the Atomic Energy Act of 1954, as aminded (the Act),:and.the

+

Comission's regulations set forth_ in 10 CFR.. Chapter 1-i B.

The facility will operate in conformity with the application, the.

j provisions of the Act, and the regulations of the Comission;.

C.

There is reasonable assurance::(i) that the activities authorized by l

this acendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will' be conducted 4

in_ compliance with the Comission's regulations set forth:in 10 CFR 1

Chapter I; D.

The issuance of this amendment will not be inimical to the comon defense and security or to the health and safety of the public; and E.

The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all_ applicable requirements have been satisfied, 2.

-Accordingly, the license is amended by changes to the Technical Specifica-a tions as indicated in the enclosure to this license amerdment and paragraph 2.C.(2) of the Facility Operating License No. NPF-18 is hereby amended to i

s read as follows:

(2) Technical Specifications and Environmental Protection Plan The Technical Specifications contained in Appendix A as revised through-AmendmentNo.56,andtheEnvironmentalProtectionPiancontainedin Appendix B, are hereby incorporated in the-license..The licensee shall-operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.

'I 2

t. -

3.

Thisamendmentiseffectiveupondateoflissuance.

FOR THE NUCLEAR. REGULATORY COMMISSION'

[

n 1

i

! ohn W,-Craig. Director--

l n

J Project Directorate III-2

. Division ~of-Reactor Projects - III',

'I IV, V.and Special Projects Office of Nuclear Reactor Regulation!

Enclosure:

Chances - to-the: Technical -

-Specifications t

"4 Date.of Issuance:. March 15, 1990 I

t f

q L

-j l

5 I

6 6

I l

1 t

j..

i ENCLOSURE TO LICENSE AMENDMENT NO. $6 FACILITY OPERATING LICENSE N0. NPF-18 DOCKET NO. 50-374 i

Replace the followin the enciesed pages. g pages of the Appendix 'A" Technical Specifications with T ne revised pages are identified b contain a vertical line indicating the area of change. y amendrent number and REMOVE INSERT 3/4 8-1 3/4 8-1 3/4 8-la 3/4 8-la 3/4 8-2 3/4 8-2 3/4 8-2a*

3/4 8 2b' 3/4 8-3 3/4 8-3 3/4 8-4 3/4 8-4 3/4 8 5 3/4 8-5 3/4 8 6 3/8 S-6 1

3/4 8-7 3/4 8-7 3/4 8-7a*

t 3/4 8-7b*

t B 3/4 8-1 B 3/4 8-1 B 3/4 8-?

8 3/4 8-2 B 3/4 8-3*

r P

New Page i

9 f

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3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES A.C. SOURCES - OPERATING J.IMITINGCONDITIONFOROPERATION

3. 8.1.1 As a minimum, the following A.C. electrical power sources shall be OFERABLE:

Two physically independent circuits between the offsite transmission a.

network and the onsite Class 1E distribution system, and b.

Separate and independent diesel getarators* 0,1A, 2A and 28 with:'

1.

For diesel generator 0, 1A and 2A:

a)

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

b)

A separate fuel storage system 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 minimum of 29,750 gallons of fuel.

3.

A separate fuel transfer pump.

APPLICABILITY:

OPERATIONAL CONDITIONS 1, 2, and 3.

ACTION:

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

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 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, 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 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 2A diesel generator inoperable, demonstrate the OPERABILITY of the above required A.C. offsite 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 diesel 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 8-1(a).

LASALLE - UNIT 2 3/4 8-1 Amendment No. 56

l ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION (Continued) h

For the purposes of completing technical specification surveillance requirements 4.8.1.1.2d.1 ano 4.8.1.1.2f.1, as part of a pre planned preventative maintenance program, on'the O di'esel generator the requirements of action statements b are modified to:

1.

Eliminate the requirement for performing '.achnical specification surveillance requirements 4.8.1.1.la on each operable AC source, immediately and once per a hours thereafter, when the O diesel generator is declared inoperable.

2.

Allow an additional 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 b for the O diesel generator to be inoperable.

Provided that the following conditions are met:

A.

Unit 1 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 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 0 diesel 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 0 diesel generator is inoperable.

The provisions of technical specification 3.0.4 are not applicable.

LASALLE - UNIT 2 3/4 8-la Amendment No. 56

I ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION (Continued)

ACTION: (Continued) 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 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 5HUTDOWN 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 .

With one offsite circuit of the above* required A.C. sources and c.

diesel generator 0 or 2A of the above required A.C. electric) power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. soureas 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 por 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 Requireme,nt 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 SHUTOOWN 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 generators 0 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 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 , d.

With diesel generator 28 of the above required A.C. electrical power 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 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 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 *, performing 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 the HPCS system inoperable and take the ACTION required by specification 3.5.1.

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

demonstrate the OPERABILITY of the remaining A.C. sources, 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 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 OPERABLE status, restore "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 8-2 Amendment No. 56 j

i ELECTRICAL POWER SYSTEMS l

1 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 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . 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 4

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

f.

With diesel generators 0 and 2A of the above required A.C.

electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement i

i 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, i

and Surveillance Requirement 4.8.1.1.2.a.4 for the 28 and 1A 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-the inopera,ble diesel generators 0 o,r 2A 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 SHUTOOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and

t in COLD SHUTOOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Restore both diesel generators 0 and 2A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , from the of initial loss, or be in at least-HOT SHUTOOWN within the next i

time 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 .

With diesti generator 1A of the above required A.C. electrical power l

g.

sources inoperable, demonstrate the OPERABILITY of the remaining A.C 1

l sources by performing Surveillance Requirement 4.8.1.1.1.a within 1

+

hour 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 i

generator became inoperable due to any cause other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the 2A diesel p nerator by performing Surveillance Requirement

+

Restore the inoperable diesel

4. 8.1.1. 2. a. 4, within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months *.

5 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 I drywell and suppression i

chamber hydrogen recombiner system, and control room and auxiliary i

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 3.7.2.

Continued performance of Surveillance-l Requirement 4.8.1.1.1.a is not required provided the above systems I

are declared inoperable and the action of their respective specifications is taken.

This test is required to be completed regardless of when the inoperable i

diesel generator is restored to OPERABILITY.

The provisions of Specification j

3.0.2 are not applicable.

I i

LASALLE - UNIT 2 3/4 8-2a Amendment No. 56

ELECTRICAL POWER SYSTEMS'

_ LIMITING CONDITIONS FOR OPERATMN (Continued)

ACTION (Continued) h.

With one offsite circuit of the above required A.C. electrical power sources and diesel generator 28 inoperable, apply the requirew nts of ACTION a and d specified above, i.

With either diesel generators 0 or 2A inoperable and diesel generator 2B inoperable, riply the requirements of ACTION b and d specified above.

j.

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

1.

With diesel generator 0 and diesel generator IA inoperable, apply the requirements of ACTION b and g specified above.

i l

LASALLE - UNIT 2 3/4 8-2b Amendment No. 56 l

t ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.B.1.1.1 Each of the above required independent circuits between the offsite transmission network and the onsite Class 1E distribution system shall be:

Determined OPERABLE at least once per 7 days by verifying correct a.

breaker alignments and indicated power availability, and b.

Demonstrated OPER&BLE at least once per 18 months during shutdown by manually transferring unit power supply from the normal circuit to the alternate circuit.

4.8.1.1.2 Each of the above required diesel generators shall be demonstrated OPERABLE:

In'accordance with the frequency specified in Table 4.8.1.1.2-1 on a a.

STAGGERED TEST BASIS by:

1.

Verifying the fuel level in the day fuel tank.

2.

Verifying the fuel level'in the fuel storage tank.

3.

Verifying the fuel transfer pump' starts and transfers fuel from the storage system to the day fuel tank.

4.

Verifying the diesel starts from ambient condition ano accelerates to 900 rpm + 5%, -2% in less than or equal to 13 seconds.** The generator voltage and frequency shall be 4160 1 150 volts and 60 + 3. 0, -1. 2 Hz within 13 seconds ** after the start signal.

S.

Verifying the' diesel generator is synchronized, and then loaded to 2400 kW to 2600 kW*** within 60 seconds,** and operates with this load for at least 60 minutes.

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as.ecommended by the manufacturer.

- Surveillance testing to verify the diesel generator start (13 second) and load (60 second) tines from ambient conditions shall be performed at least once per 184 days.

All other engine starts performed for the purpose of meeting these surveillance requirements may be conducted in accordance with warmup and loading procedures, as recommended by the manufacturer, in order to minimize mechanical stress and wear on the diesel generator caused by fast starting and loading of the diesel generator.

- - Transients, outside of this load band, do not invalidate the surveillance tests.

l LASALLE - UNIT 2 3/4 8-3 Amendment No. 56

.~.

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS m

l 6.

Verifyingthedieselgeneratorisalignedtolprovidestandby i

power to the associated emergency busses.

I 7.

Verifying the pressure in all diesel generator air start receivers to be greater than or equal to 200 psig.

i b.

At least once per 31 days and after_ each operation of the diesel where the period of operation was greater than or equal to-1 hour by checking for and removing accumulated water from the day fuel tanks.

j At least once per 92 days and from new fuel oil prior to addition to c.

the storage tanks by verifying that a sample obtained in accordance with ASTM-0270-1975 has a water and sediment content of less than or equal to 0.05 volume percent and a kinematic viscosity 9 40*C of j

i greater than or equal to 1.9 but less than or equal to 4.1 when in accordance with ASTM-D975-77, and an impurity level of testec:

less than 2 mg of insolubles per 100 mL when tested in accordance with ASTM-D2274-70.

{

H 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 recommendations for this class of standby service.

{

2.

Verifying the diesel generator capability

to reject a load of greater than or equal to 1190 kW for diesel gertrator 0, greater

~

than or equal to 638 kW for diesel generators D. and 2A, and greater than or equal to 2381 kW for diesel generator 2B while maintaining engine speed less than or equal to 75% of the difference between nominal speed and the overspeed trip setpoint or 15% above nominal, whichever is less.

~

3.

Verifying the diesel generater capability

to reject a load of 2600 kW without tripping.

The generator voltage shall not, exceed 5000 volts during and following the load rejection.

4.

Simulating a loss-of-offsite power

by itself, and:

a)

For Divisions 1 and 2 and for Unit 1 Division 2:

1)

Verifying deenergization of the emergency busses and load shedding from the emergency busses.

l l

l

^All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

LASALLE - UNIT 2 3/4 8-4 Amendment No. 56 i

.e i

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 2)

Verifying the diesel generator starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 13 seconds, energizes the auto-i connected loads and operates for greater than or equal to 5 minutes while its generator 1s so loaded. After i

energization, the steady-state voltage and freqconey of the emergency busses shall be maintained at 4169 +

150 volts and 60

1.2 Hz during this test.

a b)

For Division 3:

1)

Verifying deenergization of the emergency bus, 2)

Verifying the diesel generator starts.on the auto-start i

signal, energizes the emergency bus with its loads with-J 4

in 13 seconds and operates for. greater than or equal to

}

5 minutes while its generator is so loaded. After energization, the sterady-state voltage and frequency.

I of the emergency bus shall be maintained at 4160 t 150 volts and 60

1.2 Hz during this test.'

J 5.

Verifying that on an ECCS actuation test signal, without loss-of-of fsite power, diesel generators 0, 2A, and 28 start

on the auto-start signal and operate on standby for greater than or equal to 5 minutes.

The generator voltage and frequency shall be 4160 + A16, -150 volts and 60 + 3.0, -1,2 Hz within 13 seconds after the auto-start signal; the steady-state generator volta and frequency shall be maintained within these limits during ge this test.

6.

Simulatingaloss-of-offsitepowerinconjunctionwithanECCS actuation test signal *, and:

a)

For Divisions 1 and 2:

I 1)

Verifying deenergization of the emergency busses and load shedding from the emergency busses.

L l

All planned diesel generator starts performed for the purpose of meeting these survaillance requirements may be preceded by an engine prelube period, l

as recommended by the manufacturer.

l d

LASALLE - UNIT 2 3/4 8-5 Amendment No. 56

-l l

l'

-f

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) k l

2)

Verifying the diesel generator starts on the auto-start-l signal, energizes the emergency busses with permanently connected loads within 13 seconds, energizes the auto-connected emergency loads through the load' sequencer and operates for greater than or equal to i

5 minutes while its generator is loaded with the emergency loads.

After energization, the steady-state voltage and frequency of the emergency busses shall be maintained at 4160 t 416 volts and 60 t 1.2 Hz during this test.

i b)

For Division 3:

1)

Verifying deenergization of the emergency bus..

l 2)

Verifying the diesel generator starts on the auto-start signal, energizes the emergency bus with its loads, within 13 seconds and operates for greater than or 2

equal to 5 minutes while its generator is-loaded with the emergency loads. 'After energization, the steady state voltage and frequency of the emergency. bus shall be maintained at 4160 1 416 volts and 60 & 1.2 Hz during this test.

t 7.

Verifying that all diesel generator 0, 2A, and 28 automatic trips ee.ept the following are automatically bypassed on an ECCS actuation signal:

a)

For Divisions 1 and 2 engine overspeed generator i

differential current, and emergency manua,l stop, b)

For Division 3 engine overspeed generator differential or overcurrent, and emergency manu,al stop.

8.

Verifying the diesel generator operates

for at least 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

During the first 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months of this test, the diesel generator shall be loaded to greater than or equal to 2860 kW and durint the emaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test, the diesel generator shah; be loaded to 2400 kW to 2600 kW.*** The generator voltage and frequency shall be 4160 + 420, -150 volts and 60 + 3.0, -1.2 Hz within 13 seconds after the start signal; the steady-state I

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

t

- - Transients, outside of this load band, do not invalidate the surveillance tests.

LASALLE - UNIT 2 3/4 8-6 Amendment No. 56.

f

-, ~ -.. -

1 ELECTRICAL POWER SYSTEMS o

SURVEILLANCE REQUIREMENTS (Continued) generator voltage and frequency shall be maintained within the';e limits during this test. Within 5 minutes after completing this 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months test, perform Surveillance Requirement 4.8.1.1.2.d.4.a).2) and b).2).**

9.

Verifying

that the auto-connected loads to each diesel generator do not exceed the 2000-hour rating of 2860 kW.

10.

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 c)

Be restored to its standby status.

11.

Verifying that with diesel generator 0, 2A, and 2B operating

in a test mode and connected to its bus:

a)

For Divisions 1 and 2, that a simulated ECCS actuation signal overrides the test mode by returning the diesel i

generator to standby operation, b)

For Division 3, that a simulated trip of the diesel.

generator overcurrent relay trips the SAT feed breaker to bus 243 and that the diesel generator continues to supply normal bus loads.

12.

Verifying that the automatic load sequence timer is OPERABLE with the interval between each load block within i 10% of its design interval for diesel generators 0 and 2A.

i I

13.

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

s

All planned diesel generator starts performed for the purpose of s,eeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the runufacturer.

- 1f Surveillance Requirements 4.8.1.1.2.d.4.4)2) and/or b)2) are not satisfactorily completed, it is not necessary to repeat the preceding 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months test.

Instead,.

the diesel generator may be operated at 2600 kW for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or until operating temperature has stabilized.

LASALLE - UNIT 2 3/4 8-7 Amendment No.38'

j ELECTRICAL $0WER SYSTEMS I

1 SURVEILLANCE REQUIREMENTS (Continued)

I a)

Generator underfrequency.

b)

Low lube oil pressure, i

c)

High jacket cooling temperature.

d)

Generator reverse power.-

e)

Generator overcurrent.

1 f)

Generator loss of field.

g)

Engine cranking lockout.

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

affect diesel generator interdependence by starting diesel gener-

..i ators 0, 2A, and 28 simultaneously *, during shutdown, and verifying i

that all three diesel generators accelerate to 900 rpm + 5 -2% in less than or equal to 13 deconds.

i f.

At least once per 10 years by:

I 1.

Draining each fuel oil storage tank, removing the accumulated-

)

sediment and cleanin equivalent solution,g the tank using a sodium hypochlorite or and t

2.

Performing a pressure test of those portions of the diesel I

i fuel oil system oesigaed to Section III, subsection NO, of the t

ASME Code in accordance with ASME Code Section 11 -Article IWD-5000.

6 *.1.1. 3 Reports - All diesel generator failures, valid or non-valid, shall

c reported to the Commission pursuant to Specification 6.6.C within 30 days.

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 nuc, lear 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.

1 i

All planned diesel generator starts performed for the purpose of meeting-these surveillance requirements may be prectied by an engine prelube period, as recommended by the manufacturer.

LASALLE - UNIT 2 3/4 8-7a-Amendment No. 56 l-1

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

TABLE 4.8.1.1.2-1 DIESEL GENERATOR TEST SCHEDULE NUMBER OF FAILURES IN NUMBER OF FAILURES IN LAST 20 VALID TESTS

LAST 100 VALID TESTS

TEST FREQUENCY

<1

<4

-At least once per

~

31 days

> 2 **

>5 At least once per

~

7 days Criteria for determining number of failures and number of valid tests shall be in accordance with Regulatory Position' C.2.e of Regulatory Guide 1.108, Revision 1, August 1977, but determined on a per diesel generator basis.

With the exception of the semi-annual fast start, no starting time require-ments are required to meet the valid test requirements of Regulatory Guide 1.108.

For the purposes of determining the required test frequency, the previous test failure count nay be reduced to zero if:

1) a complete diesel overhaul to like-new condition is completed (provided that the overhaul including appropriate post-maintenance operation and testing, is sp,ecifically approved by the manufacturer), and 2) if acceptable reliability has been demonstrated.

The reliability criterion shall include the successful completion of 14 consecutive tests in a strale series structured as follows:

ten of these tests shall be performed in accordance with the c.

routine Surveillance requirements 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5, and b.

four tests shall be performed in accordance with the 184-day testing requirement of Surveillance Requirements 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5.

If this criterion is not satisfied during the first series of-tests, any alternate criterion to be used to reset tha failure count to zero requires NRC approval.

- The associated test frequency shall be maintained until 7 consecutive failure free demands have been performed AND the number of failures in the last 20 valid demands has been reduced to one.

LASALLE - UNIT 2 3/4 8-7b Amendment No.56

_n

~~

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 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 mitVion and control of accident i

i conditions within the facility.

The minfrac specified frdependent and i

4 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.

j i

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.

ACTION statements have been j

included in the specification to cover all situations where either one AC j

source or a combination of two AC sources are inoperable.

ACTION statements 1

c, e, and f are intended to be followed to completion once enttred and should l

not be exited until both AC sources are restored.

The OPERABILITY 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 !! of the onsite A.C. and D.C. power sources and associated distribution systems 3

OPERABLE during accident conditions coincident with an assumed loss of-offsite j

power and single failure of one of the two onsite A.C. sources. Division III i

supplies the high pressure core spray (HPCS) system only,

.)

i j

The OPERABILITY of the minimum specified A.C. and D.C. power sources and l

essociateo distribution systems during shutdown and refueling ensures that (1) the facility can be maintained in the shutdown or refueling condition for l

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 recemmendations of Regulatory 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 Power Plants," Revision 1, August 1977, The diesel generators are equipped with a pre-lubrication system which i

rnaintains a continuous flow of oil to the diesel engine moving parts while the engine is shutdown.

The purpose of this system is to increase long term ditsel g nerator reliability by reducing the stress and wear caused by frequent dr3 starting of the diesel generator.

The diesel generator pre-lube may be accomplished either through, normal operation of the installed pre-lubricatiin system, or by manual pre-lubrication of the diesel generator in accordance w th manufacturers instructions.

is not considered to be a means of pre-lubrication. Performance of an idle start of th L

LA SALLE - UNIT 2 B 3/4 8-1 Amendment No. 56 i

~ ~. - - -. - -...

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

ELECTRICAL POWER SYSTEMS BASES A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS (Continued)

Analysis has shown that testing, which includes a semi-annual fast start of the diesel generators, is sufficient to demonstrate the capability of the onsite A.C. power systems to mitigate the consequences of the design basis event for the plant (i.e., large LOCA coincident with a loss-of-offsite power).

All other engine starts, for the purpose of meeting the diesel generator surveillance requirements, may be preceded by a warm-up period of low speed operation (idle start), and gradual leading procedures, as recommended by the manufacturer, so that the mechanical stress and wear on the diesel generators is minimized.

The load band of 2400 kW to 2600 kW is provided only to avoid routine overloading of the diesel generators.

Momentary transients, outside the load band, due to changing bus loads do not invalidate the surveillance tests.

The surveillance requirements for demonstrating the OPERABILITY of the unit batteries are in accordance with the recoinmendations of Regulatory Guide 1.129, " Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978, and IEEE Std a50-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Station and Substations."

4 Verifying average electrolyte 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.

t Table 4.8.2.3.2-1 specifies the normal limits for each designated pilot cell and each connected cell for electrolyte ievel, float voltage and specific gravity.

The limits for the designated pilot cells float voltage and specific gravity, greater than 2.13 volts and 0.015 below the manufacturer's full charge specific gravity or a battery charger current that had stabilized at a low value, is characteristic of a charged cell with adequate capacity.

The normal limits for each connected cell for float voltage and specific gravity, greater than 2.13 volts and not more than 0.020 below the manufacturer's full charge spedfic gravity with an average specific gravity of all the connected cells not more than 0.010 below the manufacturer's full charge specific gravity, ensures the OPERABILITY and capability of the battery.

Operation with a battery cell's parameter outside the normal limit but within the allowable value specified in Table 4.8.2.3.2-1 is permitted for up to 7 days.

During this 7 day period:

(1) the allowable values for electrolyte level ensures no physical damage to the plates with an adequate electron transfer-capability; (2) the allowable value for the average specific gravity of all the cells, not more than 0.020 below the manufacturer's recommended full charge LA SALLE - UNIT 2 B 3/4 8-2 Amendment No.56

ELECTRICAL POWER SYSTEMS BASES j

A.C.SOURCESANDONSITEPOWERDISTRIBUTIONSYSTEMS(ContinM!

margin provided in sizing; (5) the allowable value for an individ fic gravity ensures that an individual cell's specific gravity will not be more than 0.040 below the manufacturer's full charge specific gravity and that the overall capability of the battery will be maintained within an acceptable limit; and (4) the allowable value for an individual cell's float voltage, greater than 2.07 veits, ensures the battery's capability to perform its design function.

3/4.8.3 Ei(CTRICAL EQUIPMENT PROTECTIVE CEVICES Prv try containment electrical penetrations and penetration conductors are protected by either de energizing circuits not required during reactor operation or demonstrating the OPERABILITY of primary and backup overcurrent protection circuit breakers by periodic surveillance.

The surveillance requirements applicable to lower voltage circuit breakers and fuses provides assurance of breaker and fuse reliability by testing at least one representative sample of each manufacturers brand of circuit breaker and/or fuse.

Each manufacturer's molded case and metal case circuit breakers and/or fuses are grouped into representative samples which are then tested on a rotat-ing basis to ensure that all breakers and/or fuses are tested.

exists within any manufacturer's brand cf molded case circuit breakers and/orIf a wide variety fuses, it is necessary to divide that manufacturer's breakers and/or fuses into groups and treat each group as a separate type of breaker or fuses for surveill-ance purposes.

The bypassing of the motor operated valves thermal overload protection continuously or during accident conditions by integral bypass devices ensures that the thermal overload protection will not prevent safety related valves from per-forming their function.

The Surveillance Requirements for demonstrating th?

bypassing of the thermal overload protection continuously and during accident conditions are in accordance with Regulatory Guide 1.106 " Thermal Overload Pro-tection for Electric Motors on Motor Operated Valves", Revision 1, March 1977.

LA SALLE - UNIT 2 B 3/4 8-3 Amendment No. 56 4

'

Person / Time
ML20034B432
Site:	LaSalle (NPF-11-A-072, NPF-11-A-72, NPF-18-A-056, NPF-18-A-56)
Issue date:	03/15/1990
From:	Jocelyn Craig Office of Nuclear Reactor Regulation
To:
Shared Package
ML20034B433	List: ML20034B432 ML20034B435
References
NUDOCS 9004270149
Download: ML20034B432 (36)
v • d • e

ML20034B432

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