Text

Proposed TS 3/4.8, Electrical Power Sys
	ML20012G560
Person / Time
Site:	Farley
Issue date:	03/04/1993
From:	; SOUTHERN NUCLEAR OPERATING CO.
To:	;
Shared Package
ML20012G559	List: ML20012G558; ML20012G560;
References
	NUDOCS 9303090224
	Download: ML20012G560 (66)
	v • d • e

ATTACHMENT I CONTENTS-List of Unit-1 and Unit 2 Changed Pages Unit 1 Annotated Pages Unit 1 Typed Pages Unit 2 Annotated Pages Unit 2 Typed Pages 9303090224 930304 ADOCK0500g8 PDR P

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,3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES 3

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

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a.

Two physically independent circuits from the offsite transmission network to the switchyard and two physically independent circuits from the switchyard to the onsite Class IE distribution system, and b.

Two separate and independent' emergency diesel generator sets (Set A: DG 1-2A and DG-IC, Set B: DG-1B end DC 2C).

Each with+ emelrsency"JdiEsel^

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~ ' ' ' '

generator.'shallibe equipped'With:

1.

Separate day tanks containing_a minimum volume of 900 gallons of fuel for the 4075 kw emergency diesel generators and 700 gallons of i

fuel for the 2850 kw emergency diesel generators.

2.

A separate fuel transfer pump for each smerbenby diesel gerieFatbr.

3.

A fuel storage system consisting of four independent stcrage tpnks i

each cont _aining a minimum of.25,000 gallons of useable fuel for each required emergency diesel generator.*

APPLICABILITY: MODES 1, 2, 3 and 4.

ALT 10N:

a.

With only one offsite A.C. circuit operable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on the remaining offsite A.C. circuit within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-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 by performing Surveillance Requirement 4.8.1.1.2.a.4, on both emergency diesel generator sets within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months unless such surveillance has' been performed within the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

Restore at least two offsite circuits to OPERABLE status

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within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months i

and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b With one emergency diesel generator set inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on both offsite A.C. circuits within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-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 srnergency diesel generator j

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set became inoperable due to any cause other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining l

emergency diesel generator set by performing Surveillance Requirement 4.8.1.I'.2.a.4, on the remaining emergency diesel generator set within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , unless such surveillance has:been performsd'withinfthejrleVioUs 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the i

-One-operaMe-feel-s4* age-tank must be avaihtAc for cath-r^-"^d d'~~'

generat+er FARLEY-UNIT 1 3/4 8-1 AMENDMENT NO.

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. ELECTRICAL POWER SYSTEMS i

i ACTION (Continued) l energencj diesel generators are already operating.

Restore the in6peFsble eijdrgencj diesel generator set to OPERABLE status within 10 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD i

SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . The provisions of Specification 3.0.4 are not applicable if only one of the he three individual emefcjehEy diesel generators tmh is inoperable.

c.

With one offsite A.C. circuit and one smeFgenE) diesel generator set i

inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on the remaining offsite A.C. circuit within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-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 smsgency other than prepl diesel generator set became inoperable due to any cause anned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining bmergenc) diesel generator set by performing Surveillance Requirement 4.8.1.1.2.a.4, on the remaining

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eirsrgency diesel generator set within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless sd6h?sdrysillance has'been peFforssdLwithinL thelpreViousP24 honrsior the emeFgency~di'esel

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generators see il' ready'o~pebating. Restore at' least one"of"thb

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inoperable A.C. sources 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . Restore the other A.C. source (offsite A.C.

circuit or emergshcj diesel generator set) to OPERABLE status in accordance with th'e' provisions of Section 3.8.1.1 Action Statements a or b, as appropriate, with the time requirement of the action statement based on the time of initial loss of the remaining inoperable A.C.

source.

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d.

With both of the offsite A.C. circuits inoperable, demonstrate the OPERABILITY of the remaining A.C. s_ources by_ performing Surveillance i

Requirement 4.8.1.1.2.a.4, on both the emergency diesel generator sets within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless sbchi uryeillance hasibeeri p'erfdFmed!Withih?the s

'pMvidss/24fhours Lsp the emergency dis ^sel'gsrierstors^ds'alfeadj~~ ~

operating.

Restore at least one of the inoperable offsite A.C. circuits 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 H0T STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . With only one offsite A.C. circuit restored, restore the other offsite A.C. circuit to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initial loss or be in at least HDT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

j e.

With both of the emergency diesel generator sets inoperable, demonstrate the OPERABILITY of'~ the ' remaining A.C. sources by performing Su..?illance Requirement 4.8.1.1.1.a on both offsite A.C. circuits within 2 im rs and j

at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; and by performing Surveillance Requirement 4.8.1.1.2.a.4, on a M the remaining bmsrgsnE diesel generators oniboth 3 nits within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless such surveillanEs 4si i

beenjeffofmsd;withindthejrsVious[24fhouFsiefthe'emergendy" dies 5T~

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generators are already operating.

Restore at least one of~the inoperable emergsnlcj diesel generator sets to OPERABLE status-i i

FARLEY-UNIT 1 3/4 8-2 AMENDMENT NO.

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flECTRICAL P0HER SVSTEMS ACTION (Continuedl 1.

Within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months if {BG-1--2A and DC 2C) cr-fDG-1B and DG-lC) or (DC IC and DC -

?&) are inoperable; or 2.

Within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months if DG 1-2A and DG-1B are inoperable; or 3.

Within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months if three ee-more emergency diesel generators are inoperable.

Restore both th_e emergency' diesel generator sets to OPERABLE status within 10 days from time of initial lo~s's or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURVEILLANCE REQUIREMENTS r

4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the onsite Class IE distribution system shall be-a.

Determined OPERABLE at ! east once per 7 days by verifying correct breaker alignments, indicated power availability, and b.

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

transferring unit power supply from the normal circuit to the alternate circuit.

l 4.8.1.1.2 Each emergency diesel generator set shall be demonstrated OPERABLE:

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a.

In accordance with the frequency specified in Table 4.8-1 on a STAGGERED TEST BASIS by:

1.

Verifying the fuel level in the day tank.

2.

Verifying the fuel level in the fuel storage tanks.

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Verifying the fuel transfer pump can be started and transfers fuel from the storage system to the day tank, i

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Verifying the emergency diesel starts and accelerates to at least I

900 rpm for the 2850 kw generator and 514 rpm for the 4075 kw generators in less than or equal to 12 seconds.

The generator voltage and frequency shall be 13952 volts and 157 Hz within 12 seconds after the start signal and operates for 5 minutes.

5.

Verifying the generator is synchronized, loaded to 2700-2850 kw for the 2850 kw generator and 3875-4075 kw for the 4075 kw generators and operates for greater than or equal to 60 minutes.

FARLEY-UNIT 1 3/4 8-3 AMENDMENT NO.

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ELECTRICAL P0HER SYSTEMS SURVEILLANCE REQUIREMENTS (Co_ntinued) i 6.

Verifying the emergency diesel generator is aligned to provide l

standby power to the~ associated emergency busses.

l b.

At least once per 92 days by verifying that a sample of emergency diesel fuel from the fuel storage tank obtained in accordance with ASTM-D270-65 is within the acceptable limits specified in Table 1 of ASTM D975-74 when checked for viscosity, water and sediment.

j c.

At least once per 18 months by:

1.

Subjecting the emergency diesel to an inspection and maintenance in accordance with procedures prepared in conjunction with its j

manufacturer's recommendations, j

2.

Simulating a loss of offsite power by itself, and:

-l a)

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

P b)

Verifying the emergency diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 12 seconds, energizes the auto-connected shutdown loads through the load sequencer and operates for greater than or equal to 5 minutes while its i

generator is loaded with the shutdown loads. After energization of all loads, the steady state voltage.and frequency of the emergency busses shall be maintained at 4160 420 volts and 60 1.2 Hz during this test.

3.

Verifying that on a Safety Injection test signal (without loss _of' i

offsite power) the emergency diesel generator starts on the auto-start signal and operates on standby for greater than or equal to 5 minutes.

The generator voltage and frequency shall be 2 3952 volts and > 57 Hz within 12 seconds after the auto-start signal; the steady state generator voltage and frequency shall be maintained l

between 4160 420 volts and 60 i 1.2 Hz during this test.

I 4.

Simulating a loss of offsite power in conjunction with a Safety l

Injection test signal, and:

i a)

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

b)

Verifying the emergency diesel starts-on the auto-start signal, energizes the emergency busses with permanently l

connected loads within 12 seconds, energizes the auto-connected emergency (accident) loads through-_the load sequencer and i

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FARLEY-UNIT 1 3/4 8-4 AMENDMENT NO.

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ELECTRICAL P0BER SYSTEMS I

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' SURVEILLANCE RFOUTREMENTS (Continued)

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operates for greater than or equal to 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 420 volts and 60 i 1.2 Hz during this test.

I c)

Verifying that all automatic emergency diesel generator trips,

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except engine overspeed and ger.erator differential and low lube oil pressure, are automatically bypassed upon loss of voltage on the

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emergency bus and/or a safety injection test signal.

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Verifying the emergency diesel generator operates for at least 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

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During the first'two (2) hours of this test, the emergency diesel generators shall be loaded to 4353 kw for the 4075 kw emergency diesels and 3100 kw for the 2850 kw emergency diesels and during'the" remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of the test, the emergency diesel generators _shall be loaded to greater than or equal to 4075 kw 'for the 4075 kw emergency diesels and 2850 kw for the 2850 kw emergency diesels.

The steady-state generator voltage and frequency shall be' maintained between 4160 420 volts and 60 1.2 Hz during this test. Within 10 minutes after completing this l

24-hour test, perform specification 4.8.1.1 2.a.4.

i 6)

Verifying that the permanently' connected 'and auto-connected loads to each emergency diesel generator do not exceed the 2000-hour rating of l

4353 kw for the 4075 kw generators and 3100 kw for the 2850 kw l

generator.

l 7)

Verifying the eme.rgency diesel generator's capability to:

l a)

Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated restoration of.

offsite power.

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b)

Transfer its loads to the offsite power source, and c)

Be restored to its standby status.

8)

Verifying that with the emergency diesel generators operating in a test mode (connected to its bus), a simulated safety injection signal overrides the test mode by returning the emergency diesel generator to l

standby operation.

.a 9)

Verifying that the automatic load sequence timer is OPERABLE with each l

load sequence time within i 10% of its required value or 0.5 seconds t

whichever is greater.

10)

Verifying.-that the following emergency diesel generator lockout features-j prevent emergency diesel generator star'ing only when required:

a)

Oil Temperature High (OTH)

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FARLEY-UNIT 1 3/4 8-5 AMENDMENT N0.

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[LECTRICAL P08ER SYSTEMS SURVElttANCE REQUIREMENTS (Continued) b)

Coolant Temperature High (CTH) c)

Coolant Pressure Low (CPL) d)

Crankcase Pressure High (CCPH) m I

11.

Verifying the capability to reject a load of greater than or equal to the largest single load associated with that emergency f

diesel generator (approximately 1000 kw) while maintaining voltage between 3740 and 4580 volts and speed less than or equal to 75% of the difference between nominal speed and the overspeed trip setpoint.

.l d.

At least once per 10 years or after any modifications which could affect emergency diesel generator interdependence by starting the emergency diesel generators simultaneously, and verifying that the emergency

diesel generators accelerate to at least 900 rpm, for the"2850 kw generator and 514 rpm for the 4075kw generators, in less than or equal to 12 seconds.

e.

At least once per 5 years, on a staggered basis, by verifying that the emergency diesel generator can reject a load of 1200-2400 kw without tripping. The emergency diesel generator output breaker (s) must remain i

closed such that the emergency diesel generator is connected to at least one emergency bus. Verify that all fuses and breakers on the energized emergency bus (es) are not tripped.

The generator voltage shall remain within 3330 and 4990 volts during and following the load rejection.

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r FARLEY-UNIT 1 3/4 8-6 AMENDMENT NO.

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N TABLE 4.8-1 EMERGENCY DIESEL GENERATOR TEST SCHEDULE Number of failures In Numbee-of-Fa44uees-4n last 2025 Valid Tests

1+st-100-Vel 4d - Tes t s

Test Frecuency 5-13 f-4 Once per 31 days t

_-2 4 t-5 Once per 7 days **

Criteria for determining the number of failures and number of valid tests demands shall be in accordance with Retteletery Posi44cn C.2.c of-Reguletery Guide-1--108--but NUMARCL87-00, Appendix ' D,. Revision 21,1 sherei th6!:humber!of demands and. failures are ' determined on..'a' per emergency diesel generatiiF" basis. A~demandisanytimetheemergency. diesel;generatortifcalled?dhon'to startL whethr byjautomatic orJmanual;initiationL LThe criteriaiare" based = upos

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counting ~ only thosel failures that have:an impactTon1theJcapability 0ffthe~ ~ ~

4 emergency; diesel; generator 1to respond.to;alstation blackoutU.HoweveMthd i

ACTION requirements must be met for those start 1 failures which(havesbeen excluded for determining the number _of failuresLinithe last;25; valid; tests) for the purpose of determining the required test frequency, the previous test failure count may be reduced to zero if a complete emergency diesel overhaul to like-new condition is completed, provided that the overhaul, including appropriate post-maintenance operation and testing, is specifically approved by the manufacturer and if acceptable reliability has been demonstrated.

The reliability criterion shall be the successful completion of 14 consecutive i

tests in a single series. These tests shall be in accordance with the routine Surveillance Requirements 4.8.1.1.2a.4) and 4.8.1.1.2a.5).

If this criterion is not satisfied during the first series of tests, any alternate criterion to be used to return the failure count to zero requires NRC l

approval.

The-essee4sted This test frequency shall be maintained until seven consecutive failure-free demands have been performed end-the-numbee-ef i

4'a44uees-in-the-4+st-20-va14d-demands-has-been reduced-to-one.

If3ubsequest.

to the seven failure-free -testsine o'r more ! additional' failures occurisuch t.hatthereEareagain.fourormorefailuresLin"thelast125testsktheitestind interval shall:again-be~ reduced as n'otediabove:and maintained ~until seven consecutive failure-free tests have-been performed.,

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i FARLEY - UNIT 1 3/4 8-6a AMENDMENT NO.

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ELECTRICAL POWER SVSTEMS

-SHUTDOUN LIMITING CONDITION FOR OPERATION l

3.8.1.2 As a minimum,_ the following A.C. electrical power sources shall be OPERABLE:

a.

One circuit from the offsite transmission network to the j

switchyard and from the switchyard to the onsite Class lE distribution system, and b.

Emerge sy diesel generator 1-2Ar or ICr or IB each with:

1.

A day tank containing a minimum volume of 900 gallons of j

fuel for the 4075 kw emergency diesel generators and 700 gallons of fuel for the 2850 kw emergency diesel generator.

.l 2..

A fuel storage tank containing a minimum volume of 25,000

.l gallons of useable fuel, and 3.

A fuel transfer pump.

l APPLICABILITY: MODES 5 and 6.

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ACTION:

l With less than the above minimum required A.C. electrical power sources OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until the minimum required A.C. electrical power sources are restored to OPERABLE status.

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I SURVEILLANCE REQUIREMENTS i

4.8.1.2 The above required A.C. electrical power sources shall be demonstrated OPERABLE by the performance of each of the Surveillance Requirements of 4.8.1.1.1

l and 4.8.1.1.2 except for requirement 4.8.1.1.2.a.5.

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i FARLEY-UNIT 1 3/4 8-6b AMENDMENT NO.

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., ELECTRICAL POWER SYSTEMS 3/4.8.2 ONSITE POWER DISTRIBUTION SYSTEMS A.L. DISTRIBUTION - OPERATING LIMITING CONDITION FOR OPERATION 3.8.2.1 The following A.C. electrical busses shall be OPERABLE, energized and aligned to an OPERABLE emergency diesel generator:

4160 volt Emergency Bus F, H and K 4160 volt Emergency Bus G, J and L 600 volt Load Centers D, -Hr X and R 600 volt Load Centers E, -Jr L and S 120 volt A.C. Vital Bus A 120 volt A.C. Vital Bus B

-t 120 volt A.C. Vital Bus C 120 volt A.C. Vital Bus D l

APPLICABillTY: MODES 1, 2, 3 and 4.

-i ACTION:

With less than the above complement of A.C. busses'0PERABLE, restore the

'f inoperable bus to OPERABLE status within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHU1DOWN within the'following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

i SURVElllANCE REQUIREMENTS ll 1

4.8.2.1 The specified A.C. busses shall be determined OPERABLE and energized at i

least once per 7 days by verifying correct breaker alignment and indicated power

-i availability.

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FARLEY-UNIT l-3/4 8-6c

. AMENDMENT N0.

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., ELECTRICAL POWER SYSTEMS A. C. DISTRIBUTION - SHUTDOWN LIMITING CONDITION FOR OPERATION

-i 3.8.2.2 As a minimum, the following train oriented A. C. electrical busses shall be OPERABLE and aligned to an OPERABLE diesel generator.

i 3 - 4160 volt Emergency Busses 4 3 - 600 volt Load Centers j

i 2 - 120 volt A. C. Vital Busses APPLICABILITY: MODES S and 6 i

ACTION:

With less than the above complement of A. C. busses OPERABLE and energized, establish CONTAINMENT-INTEGRITY within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

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SURVEILLANCE REQUIREMENTS 4.8.2.2 The specified A. C. busses shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power

.j availability.

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I FARLEY-UNIT 1 3/4 8-7 AMENDMENT NO.

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, 3/4.8 ELECTRICAL POWER SYSTEMS O

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 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 Criterion 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation.

The OPERABILITY of the power sources is consistent with the initial condition assumptions of the safety analyses and is based upon maintaining at least one redundant set of onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C.

source.

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

The Surveillance Requirements for demonstrating the OPERABILITY cf the dic;cl generator: arc in accordance ith the reccmmendation; ef Regulatory Cuide; 1.9 " Selection of Dic;cl Cencratcr Set Capacity for Standby Pcuer Supplics," March 10, 1971.

The criteria-ef--NUREC/CR 0550, " Enhancement of On Sit +-Biescl Cencr; tor Reliability," February 1970, the manufacturer'; recommendation, and operating experience have been utiliced to develop dic;cl reliability program which provide; an extrcmcly high confidence in dic;cl cpeeability.

The surveillanee test-4requency i; b;;cd en Reguhtcry Cutdc 1.MB, " Periodic Testing of Dic;cl Genester Unit; U;cd 0; Onsite Electric Power Systems-at Nuclear Power Phrtts,"

Revisien 1, August-1977,..ith adjustment; made tc preclude over testing which has been verified by the manufacturcr to be det+4 mental to dic;cl generator relichility.

In order to comply with'10 CFR 50.63, " Loss of All ' Alternating Current Power," and the guidance in_ Regulatory Guide 1.155, " Station'B1ackout;"-the minimum reliability for. emergency diesel generators.hasLbeen targeted'at1 0. 9 5'.

Each emergency diesel _ generator is tested monthly-for thef purpose of-monitoring,ds potential degradation in reliability. All data from planned 'and unplanned deman are used _in monitoring which'is based on the -last 100 demands of all emergency diesel generators,for_ Unit l: as specified in 10 CFR 50.63(a)(3). Criteria for...

determining the numberiofffaibres and valid. demands shall/ be int accordance with NUMARC 87-00c Appendix,D,7 Revision 1, where the._numberLof demands and failures are determined:enLa per. emergency diesel generator basis and-combined for all emergency diesel generators <for Unit-1 to evaluate reliability and: determine corrective action. The criteria are based upon counting only.those failuresithat have an: impact on the' capability of_the emergency diesel, generator:to1 resp,ond tola station blackout.

The Surveillance Requirements for demonstrating the OPERABILITY of the Station batteries are based on the recommendations of IEEE Standard 450-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations."

FARLEY-UNIT 1 B 3/4 8-1 AMENDMENT N0.

., ADMINISTRATIVE CONTROLS MONTHLY OPERATING REPORT i

6.9.1.10 Routine reports of operating statistics and shutdown experience, including documentation of all challenges to the PORV's or safety valves, shall be submitted on a monthly basis to the Commission, pursuant to 10 CFR 50.4 no later than the 15th of each month following the calendar month covered by the report.

RADIAL PEAKING FACTOR LIMIT REPORT RTP l

6.9.1.11 The Fxy limit for Rated Thermal Pcwer (Fxy ) for all core planes containing bank "D" control rods and all unrodded core planes shall be established and documented in the Radial Peaking Factor Limit Report before each reload cycle (prior to MODE 2) and provided to the Commission, pursuant to 10 CFR 50.4, upon issuance.

In the event that the limit would be submitted at some other time during core life, it will be submitted upon issuance, unless otherwise exempted by the Commission.

RTP Any information needed to support Fxy will be by request from the NRC and need not be included in this report.

l ANNUAL EMERGENCY DIESEL GENERATOR RELIABILITY BATA

SUMMARY

REPORT 6.9.1.12 The number of tests (valid or imam 4}-and the number of failwes-te start on demand for cach dicscl geneeatee-shall be cubmitted-to the NRC annua 14y-This repert shall cont-a4n-t-he-4nf+ma14cn identified in Regulatcry Pcsitica C.3.b er "RC Regulatery Cyide 1.103, Revisicn_ l,1977... AnTemsfgency~dieisTfgelieFitbr E

reliability summary report"shall.be submitted ~ to the:NRC an.nually. (Thistrep~ ort t

shall contain"the f.ollowing;information-

'~~

a).

'a description of the failu'res, ~ underlying causes','andicWrestiife hi:tioni~

~

taken for. failures lthat have occurred during the year,fand b)

the#:alculated nuclear unit-and individua14 emergencyidieseligenirator reliabilitiesLbased upon theilast.20,-50,.and 100 plannedVandlunp1anned demand.slusingLthe.methodologydescribedin1NUMARCi87400,[Appendixj0[

Revisionf.l i

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FARLEY-UNIT 1 6-19 AMENDMENT NO.

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3N.8 ELECTRICAL POWER SYSTEMS t

i 3B 8.1 A.C. SOURCES

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OPERATING

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LIMITING CONDITION FOR OPERATION 3.8.1.1 As a minimum, the following A.C. electrical power sources shall be f

OPERABLE:

a.

Two physically independent circuits from the offsite transmission network to the switchyard and two physically independent circuits from the switchyard to the onsite Class IE distribution system, and I

b.

Two separate and independent emergency diesel generator sets (Set A: DG l-2A and DG -10, and Set B: DG-1B).

Each emergency diesel generator shall be equipped with-1.

Separate day tank containing a minimum volume of 900 gallons of fuel for the 4075 kw emergency diesel generators and 700 gallons of fuel for the 2850 kw emergency diesel generator.

2.

A separate fuel transfer pump for each emergency diesel generator.

l 3.

A fuel storage system containing a minimum of 25,000 gallons of 4

useable fuel for each required emergency diesel generator.

[

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

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a.

With only one offsite A.C. circuit operable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on the remaining offsite A.C. circuit within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months and at i

least once par 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; and by performing Surveillance Requirement 4.8.1.1.2.a.4, on both emergency diesel generator sets within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months unless such surveillance has been performed within the l

l previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

Restore at least two offsite circuits to OPERABLE status l

within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months i

4

]

and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

l b.

With one emergency diesel generator set inoperable, demonstrate the i

OPERABILITY of the remaining A.C. sources by performing Surveillance l

1 Requirement 4.8.1.1.1.a on both offsite A.C. circuits within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-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 emergency diesel generator set became inoperable due to any cause other than preplanned preventive l

l maintenance or testing, demonstrate the OPERABILITY of the remaining l

emergency diesel generator set by performing Surveillance Requirement j

4.8.1.1.2.a.4, on the remaining emergency diesel generator set within i

24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , unless such surveillance has been performed within the l

previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already j

operating.

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FARLEY-UNIT 1 3/4 8-1 AMENDMENT NO.

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., ELECTRICAL POWER SYSTEMS ACTION (Continued)

Restore the inoperable emergency diesel generator set to OPERABLE status l

within 10 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . The provisions of Specification 3.0.4 are not applicable if only one of the three individual emergency diesel generators is inoperable.

c.

With one offsite A.C. circuit and one emergency diesel generator set l

inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on the remaining offsite A.C. circuit within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-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 emergency diesel generator set became inoperable due to any cause l

other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining emergency diesel generator set by l

performing Surveillance Requirement 4.8.1.1.2.a.4, on the remaining emergency diesel generator set within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless such surveillance l

has been performed within the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

Restore at least one of-the inoperable A.C. sources 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

Restore the other A.C. source (offsite A.C.

circuit or emergency diesel generator set) to OPERABLE status in l

accordance with the provisions of Section 3.8.1.1 Action Statements a or b, as appropriate, with the time requirement of the action statement based on the time of initial loss of the remaining inoperable A.C.

source.

d.

With both of the offsite A.C. circuits inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.2.a.4, on both the emergency diesel generator sets within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless such surveillance has been performed within the 1

previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

Restore at least one of the inoperable offsite A.C. circuits 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . With only one offsite A.C. circuit restored, restore the other offsite A.C. circuit to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initial loss or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months , e.

With both of the emergency diesel generator sets inoperable, demonstrate l

the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on both offsite A.C. circuits within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months and t

at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; and by performing Surveillance l

Requirement 4.8.1.1.2.a.4, on-the remaining emergency diesel generators

[

on both units within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless such surveillance has been i

performed within the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

Restore at least one of the i

inoperable emergency diesel generator sets to OPERABLE status:

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i FARLEY-UNIT 1 3/4 8-2 AMENDMENT NO.

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., ELECTRICAL POWER SYSTEMS ACTION (Continued)

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1.

Within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months if DG-1B and DG-lC are inoperable; or l

2.

Within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or be in at least il0T STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months if DG 1-2A and DG-1B are inoperable; or 3.

Within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months if three emergency diesel generators are inoperable.

l Restore the emergency diesel generator sets to OPERABLE status within 10 days from l

time of initial loss or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

l SURVEILLANCE RE0VIREMENTS 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the onsite Class IE distribution system shall be:

a.

Determined OPERABLE at least once per 7 days by verifying correct breaker alignments, indicated power availability, and i

b.

Demonstrated OPERABLE at least once per 18 months during shutdown by transferring unit power supply from the normal circuit to the alternate i

circuit.

4.8.1.1.2 Each emergency diesel generator set shall be demonstrated OPERABLE:

l a.

In accordance with the frequency specified in Table 4.8-1 on a STAGGERED i

TEST BASIS by:

1.

Verifying the fuel level in the day tank.

2.

Verifying the fuel level in the fuel storage tanks.

3.

Verifying the fuel transfer pump can be started and transfers fuel 4

from the storage system to the day tank.

4 Verifying the emergency diesel starts and accelerates to at least l

900 rpm for the 2850 kw generator and 514 rpm for the 4075 kw generators in less than or equal to 12 seconds.

The generator voltage and frequency shall be 13952 volts and 157 Hz within 12 i

seconds after the start signal and operates for 5 minutes.

a i

5.

Verifying the generator is synchronized, loaded to 2700-2850 kw for the 2850 kw generator and 3875-4075 kw for the 4075 kw generators l

t and operates for greater than or equal to 60 minutes.

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FARLEY-UNIT 1 3/4 8-3 AMENDMENT NO.

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., ELECTRICAL POWER SYSTEMS SURVEILLANCE RE0UIREMENTS (Continued) 6.

Verifying the emergency diesel generator is aligned to provide l

standby power to the associated emergency busses.

b.

At least once per 92 days by verifying that a sample of emergency diesel l

fuel from.the fuel storage tank obtained in accordance with ASTM-D270-65 is within the acceptable limits specified in Table 1 of ASTM D975-74 when checked for viscosity, water and sediment.

c.

At least once per 18 months by:

1.

Subjecting the emergency diesel to an inspection and maintenance in l

accordance with procedures prepared in conjunction with its manufacturer's recommendations.

2.

Simulating a loss of offsite power by itself, and:

a)

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

b)

Verifying the emergency diesel starts on the auto-start l

signal, energizes the emergency busses with permanently connected loads within 12 seconds, energizes the auto-connected shutdown loads through the load sequencer and t

operates for greater than or equal to 5 minutes while its generator is loaded with the shutdown loads. After energization of all loads, the steady state voltage and t

frequency of the emergency busses shall be maintained at 4160 420 volts and 60 1.2 Hz during this test.

3.

Verifying that on a Safety Injection test signal (without loss of i

offsite power) the emergency diesel generator starts on the auto-l start signal and operates on standby for greater than or equal to 5 minutes. The generator voltage and frequency shall be 2 3952 volts and 2 57 Hz within 12 seconds after the auto-start signal; the steady state generator voltage and frequency shall be maintained between 4160 420 volts and 60 1.2 Hz during this test.

4.

Simulating a loss of offsite power in conjunction with a Safety injection test signal, and:

a)

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

b)

Verifying the emergency diesel starts on the auto-start l

signal, energizes the emergency busses with permanently l

connected loads within 12 seconds, energizes the auto-connected emergency (accident) loads through the load sequencer and l

FARLEY-UNIT 1 3/4 8-4 AMENDMENT N0.

1 t

., ELECTRICAL P0BER SYSTEMS SURVEILLANCE RE0VIREMENTS (Continued) operates for greater than or equal to 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 420 volts and 60 1.2 Hz during this test.

j c)

Verifying that all automatic emergency diesel generator trips, l

except engine overspeed and generator differential and low lube oil pressure, are automatically bypassed upon loss of voltage on the i

emergency bus and/or a safety injection test signal.

5)

Verifying the emergency 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 two (2) hours of this test, the emergency diesel generators shall be loaded to 4353 kw for the 4075 kw emergency diesels and 3100 kw for the 2850 kw emergency diesel and during the_ remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of the test, the emergency diesel generators shall be loaded to greater than or equal to 4075 kw for the 4075 kw emergency diesels and 2850 kw for the 2850 kw emergency diesel. The steady-state generator voltage and frequency shall be maintained between 4160 420 volts and 60 1.2 Hz during this test. Within 10 minutes after completing this hour test, perform specification 4.8.1.1.2.a.4.

6)

Verifying that the permanently connected and auto-connected loads to each emergency diesel generator do not exceed the 2000-hour rating of 4353 kw for the 4075 kw generators and 3100 kw for the 2850 kw generator.

7)

Verifying the emergency diesel generator's capability to:

l a)

Synchronize with the offsite power source while the generator is t

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.

8)

Verifying that with the emergency diesel generators operating in a test l

mode (connected to its bus), a simulated safety injection signal overrides the test mode by returning the emergency diesel generator to l

standby operation.

9)

Verifying that the automatic load sequence timer is OPERABLE with each' load sequence time within 10% of its required value or 0.5 seconds whichever is greater.

10)

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

a)

Oil Temperature High (OTH)

FARLEY-UNIT 1 3/4 8-5 AMENDMENT N0.

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., ELECTRICAL' POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) b)

Coolant Temperature High (CTH) c)

Coolant Pressure Low (CPL) d)

Crankcase Pressure High (CCPH) t

11. Verifying the capability to reject a load of greater than or equal to the largest single load associated with that emergency l

diesel generator (approximately 1000 kw) while maintaining voltage between 3740 and 4580 volts and speed less than or equal to 75% of the difference between nominal speed and the overspeed trip setpoint.

d.

At least once per 10 years or after any modifications which could affect emergency diesel generator interdependence by starting the emergency diesel generators simultaneously, and verifying that the emergency diesel generators accelerate to at least 900 rpm, for the 2850 kw generator and 514 rpm for the 4075 kw generators, in less than or equal to 12 seconds.

e.

At least once per 5 years, on a staggered basis, by verifying that the emergency diesel generator can reject a load of 1200-2400 kw without tripping.

The emergency diesel generator output breaker (s) must remain closed such that the emergency diesel generator is connected to at least one emergency bus.

Verify that all fuses and breakers on the energized emergency bus (es) are not tripped.

The generator voltage shall remain within 3330 and 4990 volts during and following the load rejection.

FARLEY-UNIT 1 3/4 8-6 AMENDMENT NO.

TABLE 4.8-1 EMERGENCY DIESEL GENERATOR TEST SCHEDULE l

Number of Failures In last 25 Valid Tests

Test Frecuency l

3; 3 Once per 31 days l

14 Once per 7 days **

l Criteria for determining the number of failures and valid demands shall be in accordance with NUMARC 87-00, Appendix D, Revision 1, where the number of demands and failures are determined on a per emergency diesel generator basis. A demand is anytime the emergency diesel generator is called upon to start whether by automatic or manual initiation. The criteria are based upon counting only those failures that have an impact on the capability of the emergency diesel generator to respond to a station blackout.

However, the ACTION requirements must be met for those start failures which have been excluded for determining the number of failures in the last 25 valid tests.

For the purpose of determining the required test frequency, the previous test failure count may be reduced to zero if a complete ' emergency diesel overhaul l

to like-new condition is completed, provided that the overhaul, including appropriate post-maintenance operation and testing, is specifically approved by the manufacturer and if acceptable reliability has been demonstrated. The reliability criterion shall be the successful completion of 14 consecutive tests in a single series. These tests shall be in accordance with the routine Surveillance Requirements 4.8.1.1.2a.4) and 4.8.1.1.2a.5).

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

This test frequency shall be maintained until seven consecutive failure-free demands have been performed.

If subsequent to the seven failure-free tests one or more additional failures occur such that there are again four or more failures in the last 25 tests, the testing interval shall again be reduced as noted above and maintained until seven consecutive failure-free tests have been performed.

FARLEY - UNIT 1 3/4 8-6a AMENDMENT NO.

., ELECTRICAL P0MER SYSTEMS SHUTDOWN LIMITING CONDITION FOR OPERATION I

I 3.8.1.2 As a minimum, the following A.C. electrical power sources'shall be OPERABLE:

a.

One circuit from the offsite transmission network to the switchyard and from the switchyard to the onsite Class IE distribution system, and b.

Emergency diesel generator 1-2A or 1C or IB each with:

l 1.

A day tank containing a minimum volume of 900 gallons of fuel for the 4075 kw emergency diesel generators and 700 gallons of fuel for the 2850 kw emergency diesel generator.

2.

A fuel storage tank containing a minimum volume of 25,000 a

gallons of useable fuel, and 3.

A_ fuel transfer pump.

APPLICABILITY: MODES 5 and 6.

ACTION:

With less than the above minimum required A.C. electrical power sources OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until the minimum required A.C. electrical power sources are restored to OPERABLE

status, d

SURVEILLANCE RE0lJtREMENTS 4.8.1.2 The above required A.C. electrical power sources shall be demonstrated OPERABLE by the performance of each of the Surveillance Requirements of 4.8.1.1.1 and 4.8.1.1.2 except for requirement 4.8.1.1.2.a.5.

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FARLEY-UNIT 1 3/4 8-6b AMENDMENT NO.

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., ELECTRICAL POWER SYSTEMS l

3/4.8.2 ONSITE POWER DISTRIBUTION SYSTEMS A.C. DISTRIBUTION - OPERATING L

LIMITING CONDifl0N FOR OPERATION

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l' 3.8.2.1 The following A.C. electrical busses shall be OPERABLE, energized and aligned to an OPERABLE emergency diesel generator:

l 1

4160 volt Emergency Bus F, H and K 4160 volt Emergency Bus G, J and L 600 volt Load Centers D, K and R l

L 600 volt Load Centers E, L and S

.]

120 volt A.C. Vital Bus A 120 volt A.C. Vital Bus B l

120 volt A.C. Vital Bus C 120 volt A.C. Vital Bus D l

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

1 With less than the above complement of A.C. busses OPERABLE, restore the l

I inoperable bus to OPERABLE status within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURVElLLANCE REQUIREMENTS 4.8.2.1 The specified A.C.- busses shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power j

availability.

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FARLEY-UNIT 1 3/4 8-6c AMENDMENT NO.

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. ELECTRICAL POMER SYSTEMS j4; A. C. DISTRIBUTION - SHUTDOWN t

LIMITING CONDITION FOR OPERATION 3.8.2.2 As a minimum, the following train oriented A. C. electrical busses shall be OPERABLE and aligned to an OPERABLE diesel generator.

3 - 4160 volt Emergency Busses l

3 - 600 volt Load Centers l

l 2 - 120 volt A. C. Vital Busses APPLICABILITY: MODES 5 and 6 l

ACTION:

{

With less than the above complement of A. C. busses OPREABLE and energized,

{

establish CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

SURVEILLANCE RE0VIREMENTS l

l 4.8.2.2 The specified A. C. busses shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power availability.

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i FARLEY-UNIT 1 3/4 8-7 AMENDMENT NO.

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3/4.8 ELECTRICAL POWER SYSTEMS i

BASES 3/4.8.1 and 3/4.8.2. A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS l

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

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 cor, trol of accident conditions within i

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

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation.

The OPERABILITY of the power sources is consistent with the initial condition assumptions of the safety analyses and is based upon maintaining at least one redundant set of onsite A.C. and D.C. power sources and i

associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C.

source.

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

In order to comply with 10 CFR 50.63, " Loss of All Alternating Current Power," and the guidance in Regulatory Guide 1.155, " Station Blackout," the minimum reliability for emergency diesel generators has been targeted at 0.95.

i Each emergency diesel generator is tested monthly for the purpose of monitoring l

4 potential degradation in reliability. All data from planned and unplanned demands are used in monitoring which is based on the last 100 demands of all emergency l

diesel generators for Unit I as specified in 10 CFR 50.63(a)(3).

Criteria for determining the number of failures and valid demands shall be in accordance with NUMARC 87-00, Appendix D. Revision 1, where the number of demands and failures are i

determined on a per emergency diesel generator basis and combined for all emergency diesel generators for Unit I to evaluate reliability and determine corrective action. The criteria are based upon counting only those failures that i

have an impact on the capability of the emergency diesel generator-to respond to a station blackout.

The Surveillance Requirements for demonstrating the OPERABILITY of the Station batteries are based on the recommendations of IEEE Standard 450-1980,

?

"IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations."

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i FARLEY-UNIT 1 B 3/4 8-1 AMENDMENT NO.

., ADMINISTRATIVE CONTROLS MONTHLY OPERATING REPORT 6.9.1.10 Routine reports of operating statistics and shutdown experience, including documentation of all challenges to the PORV's or safety valves, shall be submitted on a monthly basis to the Commission, pursuant to 10 CFR 50.4 no later than the 15th of each month following the calendar month covered by the report.

RADIAL PEAKING FACTOR LIMIT REPORT RTP 6.9.1.11 The Fxy limit for Rated Thermal Power (Fxy) for all core planes containing bank "D" control rods and all unrodded core planes shall be established I

and documented in the Radial Peaking Factor Limit Report before each reload cycle (prior to MODE 2) and provided to the Commission, pursuant to 10 CFR 50.4, upon issuance.

In the event that the limit would be submitted at some other time during core life, it will be submitted upon issuance, unless otherwise exempted by the Commission.

RTP Any information needed to support Fxy will be by request from the NRC and need not be included in this report.

ANNUAL EMERGENCY DIESEL GENERATOR REllABILITY

SUMMARY

REPORT 6.9.1.12 An emergency diesel generator reliability summary report shall be submitted to the NRC annually.

This report shall contain the following information:

a) a description of the failures, underlying causes, and corrective actions taken for failures that have occurred during the year, and b) the calculated nuclear unit and individual emergency diesel generator reliabilities based upon the last 20, 50, and 100 planned and unplanned i

demands using the methodology described in NUMARC 87-00, Appendix 0, Revision 1.

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FARLEY-UNIT 1 6-19 AMENDMENT NO.

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Unit 2 1

Annotated Pages i

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3/4.8 ELECTRICAL POWER SYSTEMS f

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

a.

Two physically independent circuits from the offsite transmission network to the switchyard and two physically independent circuits from the switchyard to the onsite Class 1E distribution system, and b.

Two separate and independent emerg6ncy diesel generator sets.(Set A: DG 1-2A and DG-lC, Set B: 03-2B and-DG-M).

Each with+ Enierpentpdiiisel l

~

~'

~~~~

j densrator3h.al17bejquippedwith~:l 1.

Separate day tanks containing a minimum volume of 900 gallons of f

fuel for the 4075 kw emergency diesel generators and 700 gallons of fuel for the 2850 kw emergency diesel generators.

2.

A separate fuel transfer pump for each emergency diesel geriefit6F.

3.

A fuel storage system ens 4st4ng-of-four-independent-storage-tanks j

each containing a. minimum of 25,000 gallons of useable fuel for each frequired emergency diesel generator.*

APPLICABILITY: MODES 1, 2, 3 and 4.

l ACTION:

a.

With only one offsite A.C. circuit operable, demonstrate the.0PERABILITY of the remaining A.C. sources by performing Surveillance Requirement-4.8.1.1.1.a on the remaining offsite A.C. circuit within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months and at i*

least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; and by performing Surveillance Requirement 4.8.1.1.2.a.4, on both emergency diesel generator sets within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months unless such surveillance has been performed within the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

Restore at least two offsite circuits to OPERABLE status t

within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b.

With one emergency diesel generator set inoperable, demonstrate the 1

OPERABILITY' of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on both offsite A.C. circuits within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-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 emergency diesel generator set became inoperable due to any cause other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining i

emergency diesel generator set by performing Surveillance Requirement-4.8'.l.l.2.a.4, on..the remaining emergency.di.esel generator set within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , unless such surveillance has been performed WithinLtheyrevjous 2.4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months or the s

9 8-One-operab e-fuel-storage-tsnk-inust-be-Ova 440ble-for-each-fequirtM4esel geneeater.-

FARLEY-UNIT 2 3/4 8-1 AMENDMENT NO.

. ELECTRICAL POWER SYSTEMS ACTION (Continued) esefgenEj diesel _ generators are~ already operating.

Restore the inoperable emergency diesel generator set to OPERABLE status within 10 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD

}

. SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . The provisions of Specification 3.0.4 are not applicable if only one of the he three individual

~~

sms^giRydieselgeneratorsen4+ sis' inoperable.

c.

With one offsite A.C. circuit and one 'eriiergesj diesel generator set 1

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

performing Surveillance Requirement 4.8.1.1.1.a on the remaining offsite A.C. circuit within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months and at least once per-8 hours thereafter.

If the emedenc9 diesel generator set became inoperable due to any cause other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining bnerg'ency diesel generator set by performing Surveillance Requirement 4.8.1.1.2.a.4, on the remainin eisergensi diesel _ generator. set within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months unless such3urVeil inde u

hasibeen> p.erformed(within the; previous 24?hourster the emergency 'd esel WM RM M M% M m M'M

inoperable A.C. sources to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be'in at i

least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

Restore the other A.C. source (offsite A.C.

circuit or emergency diesel generator set) to OPERABLE status in.

accordance with th~e ~ provisions of Section 3.8.1.1 Action Statements a or b, as appropriate, with the time requirement of the action statement based on the time of initial loss of the remaining inoperable A.C.

source.

d.

With both of the offsite A.C. circuits inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.2.a.4, on both the emergency diesel generator sets within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless such surveillance *has -been ?performe6ithis7the

' revibus[24 hoursf6r the emergency' diesel gsne?ators'are"alreidi~~

p operating.

Restore at least one of the inoperable offsite A.C. circuits 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . With only one offsite A.C. circuit restored, restore the other offsite A.C. circuit to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initial loss or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

e.

With both of the ' emergency diesel generator sets inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on both offsite A.C. circuits within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-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 by performing _ Surveillance Requirement 4.8.1.1.2.a.4, on a M the remaining eme'gency diesel r

has generators ordothTunits _within. 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless suchs surveillance (l been performed within the. previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diese gsne rs forf a re ^al re ady ' ope rati ng. ^ Restore at"least o'ne of'the inoperable emerghEy diesel generator sets to OPERABLE status:

+

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FARLEY-UNIT 2 3/4 8-2 AMENDMENT NO.

4, f

ELECTRICAL _ POWER SYSTEMS ACTION (Continued)-

i 1.

Within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be ir at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months if (DC 1 2A and DC 2C) or (DG-2B and DG-IC) or (DC IC and DC s

24 are inoperable; or l

2.

Within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months if DG 1-2A and DG-2B are inoperable; or l

3.

Within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months if three er more emergency diesel generators are inoperable.

Restore both the emergency diesel generator sets to OPERABLE status within 10 days l

from time of initial loss or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

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

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

breaker alignments, indicated power availability, and i

b.

Demonstrated OPERABLE at least once per 18 months during shutdown by transferring unit power supply fiom the normal circuit to the alternate l

circuit.

4.8.1.1.2 Each emergenci diesel generator set shall be demonstr'ted OPERABLE:

In accordance with the frequency specified in Table-4.8-1 on a STAGGERED a.

TEST BASIS by:

1.

Verifying the fuel level in the day tank.

2.

Verifying the fuel level in the fuel storage tanks.

l Verifying the fuel transfer pump can be started and transfers fuel 3.

from the storage system to the day tank.

4.

Verifying the emergency diesel starts and accelerates to at least l

900 rpm for the~2850 kw generator and 514 rpm for the 4075 kw generators in less than or equal to 12 seconds. The generator voltage and frequency shall be 13952 volts and 157 Hz within 12 i

seconds after the start signal. and operates for 5 minutes.

5.

Verifying the generator is synchronized, loaded to 2700-2850 kw for the 2850 kw generator and 3875-4075 kw for the 4075 kw generators.

and operates for greater than or equal to 60 minutes.

i FARLEY-UNIT 2 3/4 8-3 AMENDMENT NO.

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. ELECTRICAL POWER SYSTEMS I

SURVElltANCE'RE0UIREMENTS (Continued) l I

6.

Verifying the einergency diesel generator is aligned to provide standby power to the associated emergency busses.

j b.

At least once per 92 days by verifying that a sample of sinej~Fgsney diesel l

fuel from the fuel storage tank obtained in accordance with ' ASTM-D270-65 is within the acceptable limits specified in Table 1 of ASTM D975-74 l

when checked for viscosity, water and sediment.

r c.

At least once per 18 months by:

l i

Subjecting the " mergency diesel to an inspection and maintenance in I

1.

e accordance with^ procedures prepared in conjunction with its manufacturer's recommendations.

l 2.

Simulating a loss of offsite power by itself, and:

a)

Verifying de-energization of the emergency busses and load i

shedding from the emergency busses.

b)

Verifying the sinerg'en'ci diesel starts on the auto-start signal, energizes the emergency busses with permanently

+

connected loads within 12* seconds, energizes the auto-l connected shutdown loads through the load sequencer and operates for greater than or equal to 5 minutes while its l

generator is loaded with the shutdown loads. After energization of all loads, the steady state voltage and i

frequency of the emergency busses shall be maintained at 4160 420 volts and 60 i 1.2 Hz during this test.

l 3.

Verifying that on a.. Safety Injection test signal (without loss of offsite power) the emergency diesel generator starts on the auto-i start signal and opeFates on standby for greater than or equal to 5 minutes. The generator voltage and frequency shall be E 3952 volts.

and > 57 Hz within 12* seconds after the auto-start signal; the _

steady state generator voltage and frequency-shall be maintained.

between 4160 1 420 volts and 60 1.2 Hz during this test.

l i

4.

Simulating a loss of offsite power in conjunction with a Safety i

Injection test signal, and:

i a)

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

1 b)

Verifying the emergency diesel starts on the auto-start

~

signal, energizes the emergency busses with permanently connected loads within 12* seconds, energizes the auto-connected emergency (accident) loads through the load sequencer and i

+ Energization of the Unit 2 cmcrgency bus for dicscl generatcr 2C is

)

achieved.ithin 25 seconds-i FARLEY-UNIT 2 3/4 8-4 AMENDMENT NO.

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-1 1

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i

, EJECTRICAL POWER SYSTEMS l

i SURVEILLANCE RE0VIREMENTS (Continued) i operates for greater than or equal to 5 minutes while its generator I

is loaded with the emergency loads. After energization, the steady state voltage and frequ'_ncy of the emergency busses shall be maintained at 4160 420 volts and 60 1.2 Hz during this test.

c)

Verifying that all automatic emergency diesel generator trips, except engine overspeed and generator differential and low lube oil pressure, are automatically bypassed upon loss of voltage on the emergency bus and/or a safety injection test signal.

l 5)

Verifying the emergency 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~two (2) hours of this test, the emergency diesel generators shall be loaded to 4353 kw for the 4075' kw emergency diesels and 3100 kw for the 2850 kw emergency diesels and during the remaining

(

22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of the test, the emergency diesel generators shall be loaded to greater than or equal to 4075 kw for the 4075 kw emergency diesels and i

2850 kw for the 2850 kw emergency diesels.

The steady-state generator voltage and frequency shall' be maintained between 4160 420 volts and 60 1.2 Hz during this test. Within 10 minutes after completing this 24-hour test, perform specification 4.8.1.1.2.a.4.

6)

Verifying that the permanently connected 'and auto-connected loads to each emergency diesel generator do not exceed the 2000-hour rating of 4353 kw for'the 4075 kw generators and 3100 kw for the 2850 kw generator.

7)

Verifying the emergency 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.

l 8)

Verifying that with the emergency diesel generators operating in a test mode (connected to its bus), a simulated safety injection signal i

overrides the test mode by returning the emergency diesel generator to standby operation.

9)

Verifying that the automatic load sequence timer is OPERABLE with each load sequence time within 10% of its required value or 0.5 seconds whichever is greater.

10)

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

a)

Oil Temperature High (OTH)

I FARLEY-UNIT 2 3/4 8-5 AMENDMENT N0.

i 1

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ELECTRICAL POMER SYSTEMS SURVEittANCE REQUIREMENTS (Continued)

'l r

b)

Coolant Temperature High (CTH) c)

Coolant Pressure Low (CPL) d)

Crankcase Pressure High (CCPH)

-l 11.

Verifying the capability to reject a load of greater than or equal to the largest single load associated with that emergency diesel generator (approximately 1000 kw) while maintairiing voltage i

between 3740'and 4580 volts and speed less than or equal to 75% of the difference betwan nominal speed and the overspeed trip setpoint.

d.

At least once per 10 years or after any modifications which could af_fect' emergency diesel generator interdependence by starting'the emergenci j

diesel generators simultaneously, and verifying that the emergency diesel generators accelerate to at least 900 rpm, for the'2850'kw' generator and 514 rpm for the 4075kw generators, in less than or equal j

to 12 seconds.

e.

At least once per 5 years, on a staggered basis, by verifying that the i

emergency diesel generator can reject a load of 1200-2400 kw without tripping.

The emergency. diesel generator output breaker (s) must remain 1

closed such that the emergency diesel generator _ is connected to at~ least

+

one emergency bus.

Verify that all fuses and breakers on the energized emergency bus (es) are-not tripped.

The generator voltage shall remain within 3330 and 4990 volts during and following the load rejection.

f l

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FARLEY-UNIT 2 3/4 8-6 AMENDMENT NO.

i b

TABLE 4.8-1 EMERGENCY DIESEL GENERATOR TEST SCHEDULE Number of Failures In Number of Failure: In Last B025 Valid Tests

bast-400 Valid Tests

Test Frecuency 5-4 3 5-4 Once per 31 days 2-2 4 1-6 Once per 7 days **

Criteria for determining the number of failures and number of valid tests dsmands shall be in accordance with Regulatcry Pc;ition C.2.c cf Regulatey Csid 108,butNUMARC?87-00," Appendix,DJRsviiibii[1,1whsbe dema(ds;and: failures are determined on a per emergency diesel]generatorhyu 7

n basis; ' A ' demand:isianytime-the emergsncy dieseli generatorlisfcalled;up5nfid start whether by aut'omatic~ or manual.sinitiationkyThe~ criteeialare[bssedMon countingLonly:thos'e2fai10res that haveL: an ~ impact < on5the tapablility;(off.the, emergency' dies' l' generator to:' respond to?afstationiblackouti Cliowevernthe e

ACTIONorequirements: must> be met l for thosel start' failures;whichihavejbein '

i excluded ;for: determining l th.e number lof fail ureslinf theflast e25 tvaliditest's]

For the purpose of determining the required test frequency, the previous test failure count may be reduced to zero if a complete emergency diesel overhaul to like-new condition is completed, provided that the~ overhaul, including appropriate post-maintenance operation and testing, is specifically approved by the manufacturer and if acceptable reliability has been demonstrated. The reliability criterion shall be the successful completion of 14 consecutive tests in a single series. These tests shall be in accordance with the routine Surveillance Requirements 4.8.1.1.2a.4) and 4.8.1.1.2a.5).

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

The associated This test frequency shall be maintained until seven consecutive failure-free demands have been performed end-the-number of n the last 20 valid demand; h:2 beca reduced to one.

3ffsubled0sht fe4hre i ioTthe"seven failure frbs't'ests on'e or'mofe'additianal] fall!ufss[ocdurfsuch [

~

7^

that there are again fourLorlmore failures"in:theilast?25 tbstsMtheitesting interval-shalliagain be reduced as noted above and maintained luntillseven consecutiveJfailure-free' tests have been; performed.

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FARLEY - UNIT 2 3/4 8-7 AMENDMENT NO.

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-ELECTRICAL POWER SYSTEMS.

SHUTDOWN i'

llMITING CONDITION FOR OPERATION 3.8.1.2 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

l a.

One circuit from the.offsite transmission network to the switchyard and from'the switchyard to the onsite Class IE distribution system, and b.

Emergency diesel generator 1-2Ar or 107 or 2B each with:

l 1.

A day tank containing a minimum volume of 900 gallons of l

fuel for the 4075 kw emergency diesel generators and.700 gallons of.

fuel for the 2850 kw emergency diesel generator.

i 2.

A fuel storage tank containing a minimum volume of 25,000 gallons of useable fuel, and j

I 3.

A fuel transfer pump.

APPLICABILITY: MODES 5 and 6.

t ACTION:

With less than the above minimum required A.C. electrical power sources OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until the minimum required A.C. electrical power sources are restored to OPERABLE status.

SURVEILLANCE REQUIREMENTS 4.8.1.2 The above required A.C. electrical power sources shall be demonstrated '

OPERABLE by the performance of each of the Surveillance Requirements of 4.8.1.1.1 i

and 4.8.1.1.2 except for requirement 4.8.1.1.2.a.5.

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FARLEY-UNIT 2 3/4 8-8 AMENDMENT NO.

I

. ELECTRICAL POBER SYSTEMS

)/4.8.2 ONSITE POWER DISTRIBUTION SYSTEMS A.C. OlSTRIBUTION - OPERATING l

1 llMITING CONDITION FOR OPERATION I

3.8.2.1 The following A.C. electrical busses and inverters shall be OPERABLE and energized.

l 4160 volt Emergency Bus F, H and K 9

4160 volt Emergency Bus -#-

G. J and L K and R 600 volt Load Centers -#-

D, -HT L and S 600 volt Load. Centers E,,17 120 volt A.C. Vital Bus -#- A energized from Inverter # A connected to D.C. Bus Train A* and 600 volt Load Center D through 600 volt Motor Contol Center A.

120 volt A.C. Vital Bus -#- B energized from Inverter f B connected to D.C. Bus Train A* and 600 volt Load Center D through 600 volt Motor Contol Center A.

j 120 volt A.C. Vital Bus -4 C energized from Inverter -#- C connected to D.C. Bus Train B* and 600 volt load Center E through 600 volt Motor Contol Center B.

i 120 volt A.C. Vital Bus -#- D energized from Inverter - 6 0 connected to D.C. Bus Train B* and 600 volt Load Center E through 600 volt i

Motor Contol Center B.

.l APPLICABillTY: MODES 1, 2, 3 and 4.

ACTION:

a.

With less than the above complement of A.C. busses OPERABLE and energized, restore the inoperable busses to OPERABLE and energized status within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

1 b.

With one inverter inoperable, energize the associated A.C. Vital Bus within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ; restore the inverter 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURVEll1ANCE Rf0VIREMENTS 4.8.2.1 The specified A.C. busses and inverters shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and i

indicated power availability,

Two inverters may be disconnected from the D.C. source for up to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for the purpose of performing an equalizing charge on their associated battery bank l

l provided (1) their vital busses are OPERABLE and energized, and (2) the vital busses associated with the other battery bank are OPERABLE and energized.

j FARLEY-UNIT 2 3/4 B-9 AMENDMENT NO.

l ELECTRICAL OdERSYSTEMS

]

i A. C. DISTRIBUTION - SHUTDOWN' i

LIMITING CONDITION FOR OPERATION l

i f

3.8.2.2-As a minimum, the following train oriented A. C. electrical busses shall i

be OPERABLE and aligned to an OPERABLE diesel generator.

l t

3 - 4160 volt Emergency Busses

]

4 3 - 600 volt Load Centers 2 - 120 volt A. C. Vital Busses APPLICABILITY: MODES 5 and 6 ACTION:

With less than the above complement of A. C. busses OPERABLE and energized, establish CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

SURVEILLANCE REQUIREMENTS i

4.8.2.2 The specified A. C. busses shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power availability.

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.i FARLEY-UNIT 2 3/4 8-10 AMEN 0 MENT NO.

h 6

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-1 3/4.8' ELECTRICAL' POWER SYSTEMS

-l BASES l

3/4.8.1 and 3/4.8.2.A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS f

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 l

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 l

sources and distribution systems satisfy the requirements of General Design Criterion 17 of Appendix "A" to 10 CFR 50.

j The ACTION requirements specified for the levels of degradation of the power 1

sources provide restriction upon continued facility operation commensurate with the level of degradation.

The OPERABILITY of the power sources is consistent with the initial condition assumptions of the safety analyses and is based upon

.{

maintaining at least one redundant set of onsite A.C. and D.C. power sources and i

associated distribution systems OPERABLE during accident conditions conincident l

I with an assumed loss of offsite power and single failure of the other onsite A.C.

source.

+

The OPERABILITY of the minimum specified A.C. and D.C. power sources and 1

associated distribution systems during shutdown and refueling ensures that 1) the facility can be maintained in the shutJown or refueling condition for extended j

time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the unit status.

The Surveilhnce kquirencnt; for demonstret4ng the OPERASILITY cf the dic e1 I

gencretcr; cre in ecce&nce sth reccrendat4cn; cf kguhtcry Cuide; 1.9 i

"Sc1cction af-Dic;cl Cencret<r Set Cepecity for St-andby Power Supplies," trch 10, 1

1971 cnd 1.108, " Periodic Tc; ting Of Dic:cl Cenceatcr Unit U;cd c: On;ite

[

Ekttric Power Sysic= ct Schu Power Phnts," hvicicn 1, 6 ust 1977.

9 r

In;orderf to complyLw'ith 10 CFR 50'.63; ~" Loss of. AlFAlteEnsting: Current Power," and the guidance;in1 Regulatory Guide 1.155, "StationiBlackouts"ithe minimum reliability forsemergency diesel 'generato'rs has been Ltargeted atf 0.95N 1

Each emergency dieseljgenerator is tested monthly for the purposeiof monitoring.

potential' degradation' in reliability.. All? data from p1anned;and unplannedfdemands are used;in-monitoring:which is. based onithellast-100 demands'of 'alliemergency l

dieseligeneratorsifor Unit ~.2lasispecified in:10:CFR 50.63(a)(3)b LCriteriaifor.

t determiningithe:numberfof:failuresTand vhlid demands shall bedinEaccordance(with i

NUMARCL87400L Appendix D,f Revision 11, where theinumber of demandslandifailurestare determined en a per emergency (dieseligenerat'or'basistandLcombinedifor?all emergencyLdiesel: generatorstfor Unitl2ito? eval.uateireliabilityiand(detefmine correctiveLaction 6 The criteria are(based upon1 counting lonlyjthosetfailuresi...that have anjimpactionttheicapabilitylofithe^emergencyfdiesel generator-tolespondito;a j

station b1ackoutt i

The Surveillance Requirements for demonstrating the OPERABILITY of the Station batteries are based on the recommendations of IEEE Standard 450-1980, I

"IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead l

Storage Batteries for Generating Stations and Substations."

l 3/4.8.3 ELECTRICAL EOUIPMENT-PROTECTIVE DEVICES I

Containment electrical penetrations and penetration conductors are protected l

by either deenergizing circuits not required during reactor operation or by i

demonstrating the OPERABILITY of overcurrent protection circuit breakers during 1

periodic surveillance.

FARLEY-UNIT 2 B 3/4 8-1 AMENDMENT N0.

i

ADMINISTRATIVE CONTROLS

?

MONTHLY OPERATING REPORT l

6.9.1.10 Routine reports of operating statistics and shutdown experience, including documentation of all challenges to the PORV's or safety valves, shall be submitted on a monthly basis to the Commission, pursuant to 10 CFR 50.4 no later than the 15th of each month following the calendar month covered by the report.

\\

l RADIAL PEAKING FACTOR LIMIT REPORT RTP i

6.9.1.11 The Fxy limit for Rated Thermal Power (Fxy ) for all core planes containing bank "D" control rods and all unrodded core planes shall be established and documented in the Radial Peaking Factor Limit Report before each reload cycle (prior to MODE 2) and provided to the Commission, pursuant to 10 CFR 50.4, upon issuance.

In the event that the limit would be submitted at some other time during core life, it will be submitted upon issuance, unless otherwise exempted by the Commission.

RTP Any information needed to support Fxy will be by request from the NRC and need not be included in this report, j

ANNUAL EMERGENCY DIESEL GENERATOR REllABILITY DATA

SUMMARY

REPORT I

6.9.1.12 The number of tc t (valid or inv;1id) and the number of 7:ilure; t+

1 start en demand for cach deel gencr;ter ; hall bc submitted tc4he "RC annually.

Thi', report shall contain inc information identM-icd in Regulatcry Pccition C.3.b cf "RC Regulatcry Cuide 1.108, Revision I,1977.

.An emergency diesel generatir reliability 1 summary report shall:be submitted to the~ NRC annually.; +Thi_s; report ^

shall:contain;the following information:

~~

a)

.a description ~ of the failures, underlying causes, and correctiveLactions taken for, failures.that have occurred during the_ year, and b);

the calculated' nuclear unit-and individual emergency diesel' generator reliabilities~ based upon the last 20, 50. and-100; planned and. unplanned demands using the methodology described in NUMARC:87-00,lAlpendixiD, i

Revision 1.

b 4

i FARLEY-UNIT 2 AMENDMENT NO.

l

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6

+

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i._

t-l i

n l:

4I Unit 2 I

n i

Typed Pages b

l 1

I

- i 1

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'i i

i h

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I t

'l D

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w,,es_.A,,,-.n-,.m,_.

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

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. _ _. _=_ -

1 3/4.8 ELECTRICAL POWER SYSTEMS--

4

-3/4.8.1 A.C. SOURCES OPERATING l

L LIMITING CONDITION FOR OPERATION i

3.8.1.1 As a minimum, the following A.C. electrical power sources shall be f

OPERABLE:

a.

Two physically independent circuits from the offsite transmission l

network to the switchyard and two physically independent circuits from l

the switchyard to the onsite Class 1E distribution system, and b.

Two separate and independent emergency diesel generator sets (Set A: DG-1-2A and DG -10, and Set B: DG-28).

Each emergency diesel generator shall be equipped with:

1.

Separate day tank containing a minimum volume of 900 gallons of fuel for the 4075 kw emergency diesel generators and 700 gallons of fuel for the 2850 kw emergency diesel generator.

2.

A separate fuel transfer pump for each emergency diesel generator.'

l 3.

A fuel storage systam containing a minimum of 25,000 gallons of useable fuel for each required emergency diesel generator.

j i

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

a.

With only one offsite A.C. circuit operable, demonstrate the OPERABILITY 1

of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on the remaining offsite A.C. circuit'within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-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 by performing Surveillance Requirement 4.8.1.1.2.a.4, on both emergency diesel generator sets within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months unless such surveillance has been performed within the.

l previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

Restore at least two offsite circuits to OPERABLE status l

within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT ST4MDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the followirg 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b.

With one emergency diesel generator set. inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance l

Requirement 4.8.1.1.1.a on both offsite A.C. circuits within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-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 emergency diesel generator set became inoperable due to any cause other than preplanned preventive l

maintenance or testing, demonstrate the OPERABILITY of the remaining emergency diesel generator set by performing Surveillance Requirement 4.8.1.1.2.a.4, on the remaining emergency diesel generator set within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , unless such surveillance has been performed within the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

FARLEY-UNIT 2 3/4 8-1 AMENDMENT NO.

~

., ELECTRICAL POWER SYSTEMS ACTION (Continued _1 l

Restore the inoperable emergency diesel generator set to OPERABLE status l

within 10 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . The provisions of Specification 3.0.4 are not applicable if only one of the three individual emergency diesel generators is inoperable.

c.

With one offsite A.C. circuit and one emergency diesel generator set l

inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on the remaining offsite i

A.C. circuit within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-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 emergency diesel generator set became inoperable due to any cause l

other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining emergency diesel generator set by l

performing Surveillance Requirement 4.8.1.1.2.a.4, on the remaining i

emergency diesel generator set within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless such surveillance i

has been performed within the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

Restore at least one of the inoperable A.C. sources 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within i

the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

Restore the other A.C. source (offsite A.C.

circuit or emergency diesel generator set) to OPERABLE status in l

accordance with the provisions of Section 3.8.1.1 Action Statements a or b, as appropriate, with the time requirement of the action statement based on the time of initial loss of the remaining inoperable A.C.

source.

d.

With both of the offsite A.C. circuits inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.2.a.4, on both the emergency diesel generator sets within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless such surveillance has been performed within the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

Restore at least one of the inoperable offsite A.C. circuits 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . With only one offsite A.C. circuit restored, restore l

the other offsite A.C. circuit to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from i

time of initial loss or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months , e.

With both of the emergency diesel generator sets inoperable, demonstrate l

the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a on both offsite A.C. circuits within 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months s-and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; and by performing Surveillance Requirement 4.8.1.1.2.a.4, on the remaining emergency diesel generators on both units within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless such surveillance has been performed within the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the emergency diesel generators are already operating.

Restore at least one of the inoperable emergency diesel generator sets to OPERABLE status:

FARLEY-UNIT 2 3/4 8-2 AMENDMENT NO.

., ELECTRICAL POWER SYSTEMS ACTION (Continued) i 1.

Within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT STANDBY within the next 6 i

hours if DC-28 and DG-IC are inoperable; or l

I 4

2.

Within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or be in at least HOT STANDBY within the next 6

~

hours if DG l-2A and DG-28 are inoperable; or -

3.

Within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months if three emergency diesel generators are inoperable.

l

)

Restore the emergency diesel generator sets to OPERABLE status within 10 days fr.am l

)

time of initial loss or be in at least H01 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURV[ltl ANCE_ REQUIREMENTS i

t 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the onsite Class IE distribution system shall be:

j i

a.

Determined OPERABLE at least once per 7 days by verifying correct breaker alignments, indicated power availability, and b.

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

transferring unit power supply from the normal circuit to the alternate i

circuit.

{

n 4.8.1.1.2 Each emergency diesel generator set shall be demonstrated OPERABLE:

l l

a.

in accordance with the frequency specified in lable 4.8-1 on a STAGGERED TEST BASIS by:

1.

Verifying the fuel level in the day tank.

l l

2.

Verifying the fuel level in the fuel storage tanks.

j

'l 3.

Verifying the fuel transfer pump can be started and transfers fuel l

~

from the storage system to the day tank.

i 4.

Verifying the emergency diesel starts and accelerates to at least l

900 rpm for the 2850 kw generator and 514 rpm for the 4075 kw l

generators in less than or equal to 12 seconds.

The generator voltage and frequency shall be 2 3952 volts and 2 57 Hz within 12 seconds after the start signal and operates for 5 minutes-,

j 5.

Verifying the generator is synchronized, loaded to 2700-2850 kw for the 2850 kw generator and 3875-4075 kw for the 4075 kw generators l

and operates for greater than or equal to 60 minutes.

t f

FARLEY-UNIT 2 3/4 8-3 AMENDMENT NO.

e

ELECTRICAL POWER SYSTEMS SURVEILtANCE REQUIREMENTS (Continued) 6.

Verifying the emergency diesel generator is aligned to provide l

standby power to the associated emergency busses.

b.

At least once per 92 days by verifying that a sample of emergency diesel l

fuel from the fuel storage tank obtained in accordance with ASTH-0270-65 is within the acceptable limits specified in Table 1 of ASTM 0975-74 when checked for viscosity, water and sediment.

c.

At least once per 18 months by:

1.

Subjecting the emergency diesel to an inspection and maintenance in l

accordance with procedures prepared in conjunction with its manufacturer's recommendations.

2.

Simulating a loss of offsite power by itself, and:

a)

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

b)

Verifying the emergency diesel starts on the auto-start.

l signal, energizes the emergency busses with permanently connected loads within 12 seconds, energizes the auto-l connected shutdown loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the shutdown loads.

After energization of all loads, the steady state voltage and frequency of the emergency busses shall be maintained at 4160-1 420 volts and 60 1 1.2 Hz during this test.

3.

Verifying that on a Safety injection test signal (without loss of offsite power) the emergency diesel generator starts on the ' auto-l start signal and operates on standby for greater than or equal to 5 minutes.

The generator voltage and frequency shall be 13952 volts-and 2 57 Hz within 12 seconds after the auto-start signal; the l

steady state generator voltage and frequency shall be maintained between 4160 420 volts and 60 1.2 Hz during this test.

4.

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

a)

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

Verifying the emergency diesel starts on the auto-start l

signal, energizes the emergency busses with permanently connected loads within 12 seconds, energizes the auto-l connected emergency (accident) loads through the load sequencer and FARLEY-UNIT 2 3/4 8-4 AMENDMENT N0.

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

-i

)

operates for greater than or equal to 5 minutes while -its generator is loaded with the emergency loads. After energization, the steady i

state voltage and frequency of the emergency busses shall be maintained at 4160 1 420 volts and 60 1 1.2 Hz during this test.

c)

Verifying that all automatic emergency diesel generator trips, l

except engine overspeed and generator differential and low lube oil pressure, are automatically bypassed upon loss of voltage on the emergency bus and/or a safety injection test signal.

5)

Verifying the emergency 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 two (2) hours of this test, the emergency diesel generators shall be loaded to 4353 kw for the 4075 kw emergency diesels and 3100 kw for the 2850 kw emergency diesel and during the remaining 22-hours of the test, the emergency diesel generators shall be loaded to greater than or equal to 4075 kw for the 4075 kw emergency diesels and 2850 kw for the 2850 kw emergency diesel.

The steady-state generator voltage and frequency shall be maintained between 4160 1 420 volts and 60 1 1.2 Hz during this test. Within 10 minutes after completing this 24-hour test, perform specification 4.8.1.1.2.a.4.

6)

Verifying that the permanently connected and auto-connected loads to each emergency diesel generator do not exceed the 2000-hour rating of i

4353 kw for the 4075 kw generators and 3100 kw for the 2850 kw generator.

7)

Verifying the emergency diesel generator's capability to:

l a)

Synchronize with the offsite power source while the generator is i

loaded with its emergency loads upon a simulated restoration of offsite power.

b)

Transfer its loads to the offsite power source, and i

c)

Be restored to its standby status.

8)

Verifying that with the emergency diesel generators operating in a test l

mode (connected to its bus), a simulated safety injection signal overrides the test mode by returning the emergency diesel generator to l

standby operation.

9)

Verifying that the automatic load sequence timer is OPERABLE with each load sequence time within 10% of its required value or 0.5 seconds wSichever is greater.

10)

V rifying that the following emergency diesel generator lockout features p.cvent emergency diesel generator starting only when required:

a)

Oil Temperature High (OTH) 1 FARLEY-UNIT 2 3/4 8-5 AMENDMENT NO.

I i

ELECTRICAL POWER SYSTEMS SURVEILLANCE REOUIREMENTS (Continued) b)

Coolant Temperature High (CTH) c)

Coolant Pressure Low (CPL) d)

Crankcase Pressure High (CCPH)

11. Verifying the capability to reject a load of greater than or equal to the largest single load associated with that emergency l

diesel generator (approximately 1000 kw) while maintaining voltage between 3740 and 4580 volts and speed less than or equal to 75% of the difference between nominal speed and the overspeed trip t

setpoint.

d.

At least once per 10 years or after any modifications which could affect emergency diesel generator interdependence by starting the emergency diesel generators simultaneously, and verifying that the emergency diesel generators accelerate to at least 900 rpm, for the 2850 kw generator and 514 rpm for the 4075 kw generators, in less than or equal to 12 seconds.

t e.

At least once per 5 years, on a staggered basis, by verifying that the emergency diesel generator can reject a load of 1200-2400 kw without tripping. The emergency diesel generator output breaker (s) must remain closed such that the emergency diesel generator is ccnnected to at least one emergency bus.

Verify that all fuses and breakers on the energized emergency bus (es) are not tripped. The generator voltage shall remain within 3330 and 4990 volts during and following the load rejection.

f 7

W 1

I FARLEY-UNIT 2 3/4 8-6 AMENDMENT NO.

t

TABLE 4.8-1 EMERGENCY DIESEL GENERATOR TEST SCHEDULE l

~

Number of Failures In Last 25 Valid Tests

Test FreouenCY l

1 s3 Once per 31 days l'

24 Once per 7 days **

l t

i Criteria for determining the number of' failures and valid demands shall be in accordance with NUMARC 87-00, Appendix D, Revision 1, where the number of-demands and failures are determined on a per emergency diesel generator basis. A demand is anytime the emergency diesel generator is called upon to start whether by automatic or manual initiatior,.

The criteria are based upon counting only those failures that have an impact on the capability of the emergency diesel generator to respond to a station blackout. However, the ACTION requirements must be met for those start failures which have been excluded for determining the number of failures in the last 25 valid tests.

For the purpose of determining the required test frequency, the previous test failure count may be reduced to zero if a complete emergency diesel overhaul l

to like-new condition is completed, provided that the overhaul, including appropriate post-maintenance operation and testing, is specifically approved by the manufacturer and if acceptable reliability has been demonstrated.

The i

reliability criterion shall be the successful completion of 14 consecutive tests in a single series.

These tests shall be in accordance with the routine Surveillance Requirements 4.8.1.1.2a.4) and 4.8.1.1.2a.5).

If this criterion is not satisfied during the first series of tests, any alternate'

+

criterion to be used to return the failure count to zero requires NRC approval.

This test frequency shall be maintained until seven consecutive failure-free demands have been performed.

If subsequent to the seven failure-free tes,'

one or more additional failures occur such that there are again four or mor.

failures in the last 25 tests, the testing interval shall again be reduced a -

i noted above and maintained until seven consecutive failure-free tests have been performed.

FARLEY-UNIT 2 3/4 8-7 AMENDMENT NO.

1

ELECTRICAL POWER SYSTEMS SHUTOOWN LIMITING CONDITION FOR OPERATION 3.8.1.2 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

a.

One circuit from the offsite transmission network to the switchyard and from the switchyard to the onsite Class IE distribution _ system, and b.

Emergency diesel generator 1-2A or IC or 2B each with:

1 1.

A day tank containing a minimum volume of 900 gallons of fuel for the 4075 kw emergency diesel generators and 700 gallons of-fuel for the 2850 kw emergency diesel generator.

2.

A fuel storage tank containing a minimum volume of 25,000 gallons of useable fuel, and 3.

A fuel transfer pump.

APPLICABILITY: MODES 5 and 6.

ACTION:

-l With less than the above minimum required A.C. electrical power sources _ OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until the minimum required A.C. electrical power sources are restored to OPERABLE status.

SURVEILLANCE REQUIREMENTS

.i 4.8.1.2 The above required A.C. electrical power sources shall be demonstrated i

OPERABLE by the performance of each of the Surveillance Requirements of 4.8.1.1.1 and 4.8.1.1.2 except for requirement 4.8.1.1.2.a.5.

i FARLEY-UNIT 2 3/4 8-8 AMENDMENT NO.

-; ELECTRICAL POWER SYSTEM -

3/4.8.2 ONSITE POWER DISTRIBUTION SYSTEMS A.C. DISTRIBUTION - OPERATING LIMITING CONDITION FOR OPERATION

.i 3.8.2.1 The following A.C. electrical busses and inverters shall be OPERABLE and energized.

4160 volt Emergency Bus F, H and K l

4160 volt Emergency Bus G, J and L l

i 600 volt Load Centers D, K, and R l

600 volt Load Centers E, L, and S l-120 volt A.C. Vital Bus A energized froin Inverter A connected to D.C.

l Bus Train A* and 600 volt Load Center D through 600 volt Motor Control Center A.

i 120 volt A.C. Vital Bus B energized from Inverter B connected to D.C.

l Bus Train A* and 600 volt Load Center D through 600 volt Motor Control Center A.

120 volt A.C. Vital Bus C energized from Inverter C connected to D.C.

l Bus Train B* and 600 volt Load Center E through 600 volt Motor Control Center B.

120 volt A.C. Vital Bus D energized from Inverter D connected to D.C.

l Bus Train B* and 600 volt Load Center E through 600 volt Motor Control Center B.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

a.

With less than the above complement of A.C. busses OPERABLE and energized, restore the inoperable busses to OPERABLE and energized status within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b.

With one inverter inoperable, energize the associated A.C. Vital Bus within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ; restore the inverter 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURVEILLANCE REQUIREMENTS 4.8.2.1 The specified A.C. busses and inverters shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power availability.

Two inverters may be disconnected from the D.C. source for up to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for the purpose of performing an equalizing charge on their associated battery bank provided (1) their vital busses are OPERABLE and energized, and (2) the vital busses associated with the other battery bank are OPERABLE and er.ergized.

FARLEY-UNIT 2 3/4 8-9 AMEN 0 MENT NO.

l ELECTRICAL POWER SYSTEMS A. C. DISTRIBUTION - SHUTDOWN LIMITING CONDITION FOR OPERATION 3.8.2.2 As a minimum, the following train oriented A. C. electrical busses shall t

be OPERABLE and aligned to an OPERABLE diesel generator.

3 - 4160 volt Emergency Busses l

3 - 600 volt Load Centers l

2 - 120 volt A. C. Vital Busses APPLICABILITY: MODES 5 and 6 ACTION:

With less than the above complement of A. C. busses OPREABLE and energized, establish CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

SURVEILLANCE REQUIREMENTS 4.8.2.2 The specified A. C. busses shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power availability.

b FARLEY-UNIT 2 3/4 8-10 AMENDMENT NO.

i

t 3/4.8 ELECTRICAL POWER SYSTEMS I

BASES 3/4.8.1 and 3/4.8.2.A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS i

The OPERABILITY of the A.C. and D.C. power sources and associated distribution systems during operation ensures that sufficient power will be j

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 I

the facility. The minimum specified independent and redundant A.C. and D.C. power l

sources and distribution systems satisfy the requirements of General Design i

Criterion 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of the power I

sources provide restriction upon continued facility operation commensurate with

.l the level of degradation.

The OPERABILITY of the power sources is consistent with the initial condition assumptions of the safety analyses and is based upon maintaining at least one redundant set of onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C.

source.

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

[

associated distribution systems during shutdown and refueling ensures that 1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the unit status.

In order to comply with 10 CFR 50.63, " Loss of All Alternating Current Power," and the guidance in Regulatory Guide 1.155, " Station Blackout," the minimum reliability for emergency diesel generators has been targeted at 0.95.

Each emergency diesel generator is tested monthly for the purpose of monitoring potential degradation in reliability. All data from planned and unplanned demands are used in monitoring which is based on the last 100 demands of all emergency diesel generators for Unit 2 as specified in 10 CFR 50.63(a)(3).

Criteria for i

determining the number of failures and valid demands shall be in accordance with NUMARC 87-00, Appendix D, Revision 1, where the number of demands and failures are j

' determined on a per emergency diesel generator basis and combined for all emergency diesel generators for Unit 2 to evaluate reliability and determine i

corrective action. The criteria are based upon counting only those failures that have an impact on the capability of the emergency diesel generator to respond to a station blackout.

j t

The Surveillance Requirements for demonstrating the OPERABILITY of the Station batteries are based on the recommendations of IEEE Standard 450-1980, j

"lEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations."

l 3/4.8.3 ELECTRICAL EQUIPMENT PROTECTION DEVICLS Containment electrical penetrations and penetration conductors are protected i

by either deenergizing circuits not required during reactor operation or by i

demonstrating the OPERABILITY of overcurrent protection circuit breakers during periodic surveillance.

(

ei FARLEY-UNIT 2 B 3/4 8-1 AMENDMENT NO.

i

ADMINISTRATIVE CONTROLS MONTHLY OPERATING REPORT 6.9.1.10 Routine reports of operating statistics and shutdown experience, including documentation of all challenges to the PORV's or safety valves, shall be submitted on a monthly basis to the Commission, pursuant to 10 CFR 50.4 no later than the 15th of each month following the calendar month covered by the report.

RADIAL PEAKING FACTOR LIMIT REPORT RTP 6.9.1.11 The Fxy limit for Rated Thermal Power (Fxy ) for all core planes containing bank "D" control rods and all unrodded core-planes shall be established and documented in the Radial Peaking Factor Limit Report before each reload cycle (prior to MODE 2) and provided to the Commission, pursuant to 10 CFR 50.4, upon issuance.

In the event that the limit would be submitted at some other time during core life, it will be submitted upon issuance, unless otherwise exempted by the Commission.

RTP Any information needed to support Fxy will be by request from the NRC and need not be included in this report.

ANNUAL EMERGENCY DIESEL GENERATOR REllABillTY

SUMMARY

REPORT 6.9.1.12 An emergency diesel generator reliability summary report shall be submitted to the NRC annually.

This report shall contain the following information:

a) a description of the failures, underlying causes, and corrective actions taken for failures that have occurred during the year, and b) the calculated nuclear unit and individual emergency diesel generator reliabilities based upon the last 20, 50, and 100 planned and unplanned demands using the methodology described in NUMARC 87-00, Appendix D, Revision 1.

FARLEY-UNIT 2 6-19 AMENDMENT NO.

Qm a h

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ATTACHMENT 2 I

SAFETY ANALYSIS l

JOSEPH M. FARLEY NUCLEAR PLANT ELECTRICAL POWER SYSTEM TECHNICAL SPECIFICATION CHANGES IN RESPONSE TO THE STATION BLACKOUT RULE k

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SAFETY ANALYSIS JOSEPH M. FARLEY NUCLEAR PLANT ELECTRICAL POWER SYSTEM TECHNICAL SPECIFICATION CHANGES IN RESPONSE TO THE STATION BLACKOUT RULE 1

PROPOSED CHANGES:

The proposed revisions to Technical Specification and Bases 3/4.8.1 for both units include:

(i) delete references to diesel generator 2C from T.S.

3/4.8.1.1 and T.S 3/4.8.1.2; l

(ii) revise the diesel generator test schedule based upon the NUMARC guidance l

for determining the number of allowable failures and valid demands; (iii) delete 600 volt load centers J and H as listed in T.S. 3/4.8.2; (iv) revise the requirements of T.S. 6.9.1.12 for the Annual Diesel Generator Reliability Report.

l BACKGROUND:

l On July 21,1988, Title 10 of the Code of Federal Regulation (10 CFR), Part 50, I

was amended to include a new section 50.63, entitled " Loss of All Alternating l

Current Power." This condition of a complete loss of AC electrical power to a l

l nuclear power plant is referred to as a station blackout (SBO).

The SB0 rule requires each nuclear power plant to be capable of maintaining core cooling and appropriate containment integrity in order to withstand and recover from an SB0 of a duration based upon specific site characteristics.

l SNC provided a response to the SB0 rule by letters dated April 12, 1989 and March l

8,1990, in which proposed modifications will be made to the emergency electrical l

power systems to designate one of the existing emergency diesel generators (EDG) l as an alternate AC (AAC) power source as defined in Regulatory Guide 1.155, I

" Station Blackout."

In a Safety Evaluation Report (SER) dated April 25, 1991, the NRC concluded that the proposed use of an existing EDG as an AAC is an acceptable means of resolving the SB0 issue.

Additional information about j

hardware and procedural modifications was requested by the NRC and subsequently provided by letter dated June 5, 1991.

In this letter, SNC stated that modifications will be implemented during the Unit I twelfth and Unit 2 ninth refueling outages to designate DG 2C as an AAC. These modifications will ensure that the train B safe shutdown loads in the SB0 unit can be powered by DG 2C by manual actions from the control room within 10 minutes of the determination of a blackout; and as such, diesel generator 2C will not automatically start during any design basis event.

A Supplemental SER was issued by the NRC on June 12, 1992 which stated that SNC's response was acceptable. Final NRC approval of the SNC response to the SB0 rule was given in NRC letter dated August 14, 1992.

Following the SB0 modifications, diesel generator 2C will no longer be relied upon for performing the functions of an emergency power source for design basis 1

i

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events (i.e., automatically starting upon a safety injection or loss of offsite power signal); therefore, the technical specifications must be revised to delete all references to its use as a design basis diesel generator.

DISCUSSION:

As stated in SNC's June 5, 1991 response to the NRC, DG 2C will be dedicated as the AAC source for SB0 events. DG 2C will be connectable from the control room to the train B safe shutdown buses in either unit. The few safe shutdown loads currently being supplied by DG 2C (approximately 150 kw total for both units) will be supplied by EDGs IB or 28.

The four remaining EDGs (1-2A, IB, 2B, and IC) are each uniquely assigned to a train of safe shutdown equipment for one unit in each design basis event.

With the remaining four EDGs, 'both units will continue to comply with the licensing basis for all design basis accidents, considering a single failure, without taking credit for DG 2C. The capacity of the remaining EDGs and their alignment will provide adequate power for the safe shutdown loads during the worst case loading scenarios (i.e., LOSP in both units concurrent with a LOCA in one unit).

l The impact of the additional shutdown loads formally supplied from DG 2C has been-analyzed, and it has been determined that EDGs IB and 2B will continue to have sufficient capacity (a075 kw continuous) to energize a complete safety train of shutdown loads of one unit during its worst case scenario.

The train A EDG loading will be unaffected by the SB0 modifications and will continue to have sufficient capacity to supply power to a complete safety train during all design basis events.

Therefore, the elimination or diesel generator 2C from the technical specifications as a emergency power source during design basis events, i

in order that it may be used as the AAC in case of a SB0, will not diminish the emergency electrical power system's ability to cope with the worst case design basis event.

The proposed revisions to the EDG surveillance test schedule incorporated into this submittal supersede those changes previously requested. All other changes included in the December 11, 1992 submittal are unaffected by these proposed I

changes.

SNC has re-examined the analyses provided in support of the technical specification changes proposed by letter dated December 11, 1992 in light of the additional changes being proposed by this submittal.

Specifically, the justifications for the following changes were reviewed to determine if the conclusions of the previously submitted significant hazards considerations and environmental impact evaluations are affected: 1) reduction of the allowed outage time for an EDG from 18 days to 10 days, 2) retention of the exception to T.S. 3.0.4 which would allow a change in operating mode with one EDG inoperable, and 3) reducing the time allowea for operability verification of the remaining l

offsite circuit in the case of one~ inoperable offsite circuit.

l In support of Items 1 and 2 above, the safety analysis provided with the December 11, 1992 submittal explained that the A.C. electrical power system arrangement at FNP is designed with a higher degree of flexibility than that ' assumed by the STS. The STS is based upon a single unit plant with two dedicated EDGs; whereas, FNP has five EDGs for dual units.

With the FNP system design, : for all combinations of a single inoperable EDG coincident with a dual unit LOSP and a

- Page 2 -

LOCA on either unit, at least one safety-related train will be automatically powered at each unit and in addition, manual transfer can restore loads that may not be automatically energized. This position is substantiated by the SB0 Safety Evaluation Report issued by the NRC on April 25, 1991 when it says, "In all cases, the shutdown power availability at the Farley site is superior to that which would pertain at a two-unit site with two dedicated EDGs per unit where the i

EDGs qualify as an AAC source on the basis of excess capacity, or where such a i

site has added an additional diesel generator as an AAC source with the capacity

}

for powering only the SB0 shutdown loads of one unit." Although the simultaneous failure of two EDGs is beyond FNP's design basis, with the three remaining diesel

(

generators (2C will retain the capability to be used to backup the train B design basis EDGs) at least one compliment of emergency loads can be powered for the worst case design basis event (i.e., dual unit LOSP coincident with a single unit LOCA) through manual control room operator actions.

(

As stated above, the elimination of diesel generator 2C as an emergency power f

source (as listed in the technical specifications) will not impact the remaining i

four EDGs ability to supply all needed shutdown loads during the worst case design basis accident. With the present emergency A.C. electrical power system design (upon which Items 1 and 2 were based), DG 2C will automatically start upon l

.an LOSP or sa ety in ection signa ; however, on y some small miscellaneous safe f

j l

l shutdown loads are supplied by DG 2C.

SNC's assertion that FNP's electrical sys ?m design provides a high degree of flexibility is based upon the ability to align DG 2C to both unit's B-train emergency buses and manually add shutdown loads, if necessary.

When this argument is examined in light of the SB0 modifications it remains valid.

Although diesel generator PC will no longer i

receive automatic start signals following completion of the SB0 modifications,

~

the operator will still have the ability to manually start diesel generator 2C and add shutdown loads to the B-train emergency buses from the control room. In i

fact, after the SB0 modifications are fully implemented, the operator will not have to perform any breaker realignments in order to tie diesel generator 2C to the B-train safe shutdown emergency buses (i.e., IG or 2G and Il and 2L) as is currently required. Therefore, the degree of flexibility of the FNP emergency A.C. electrical power system design is not diminished, but is in fact enhanced by the SB0 modifications associated with DG 2C.

l With regard to item 3 above, the reasoning stated for allowing the operator an j

additional hour above the STS to perform the required surveillance on the i

remcining offsite circuit is to avoid distraction of the operator from urgent tasks associated with plant stabilization immediately following an LOSP.

The changes to the EDGs configuration due to the SB0 rule do not alter this reasoning, and as such, the basis for Item 3 above remains valid.

l l

The proposed revisions to T.S Table 4.8-1, " Diesel Generator Test Schedule" are consistent with positions developed by NUMARC through discussions with the NRC.

l The criteria for accelerated testing of an individual EDG are in agreement with:

j

1) proposed revision to 10 CFR 50.63, " Loss of All Alternating Current Power,"

Section (a)(3)(ii); 2) draft Regulatory Guide 1.9, Revision 3,

" Selection, 1

Design, Qualification, Testing, and Reliability of Emergency Diesel Generator I

Units Used as Class IE Onsite Electric Power Systems at Nuclear Power Plants,"

Position 2.3.3; and 3) NUREG-1431, Revision 0, " Standard Technical Specification Westinghouse Plants." As stated in NUREG-1431, the basis for the proposed EDG test schedule is to provide timely test data to establish a confidence level associated with the goal to maintain unit emergency diesel generator reliability j

- Page 3 -

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i at 0.95 or greater.

The criterion of four failures in the last 25 valid tests establishes a threshold for acceptable EDG performance which would be indicative of possibly degrading EDG reliability, increasing the. test frequency will l

provide for more timely accumulation of data upon which to base a judgment of the i

EDGs reliability.

In order to ensure that diesel generator 2C is maintained in a high state of readiness so that the flexibility afforded by its use is not diminished, SNC will implement a reliability program which will ensure.that its reliability is l

maintained at 0.95 or greater and a maintanence program to ensure a high level of availability is maintained.

By letter dated December 30, 1982, Alabama Power Company requested that the requirements associated with the river water system be deleted from the technical j

specifications. This request was approved by the NRC per License Amendments 45 i

and 36, for Units 1 and 2 respectively; however, references to 600 volt load-I centers J and H, which supply power to the river water pump auxiliaries, were not

.i deleted from T.S. 3.8.2.1.

The justification for removing 600 volt load centers 1

J and H from the technical specifications was provided in the safety evaluation l

reports for these license amendments; as such, this proposed change is an j

administrative change only-l The required content of the annual EDG reliability report is being revised to include, in addition to the results of individual EDG testing per T.S. 4.8.1.1.2,-

i the calculated unit reliability as dictated by the SB0 rule.

This change is I

being submitted in order to demonstrate compliance with commitments made in ll response to the SB0 rule.

-l i

CONCLUSION:

The proposed changes to the FNP electrical power system technical specifications are in accordance with SNC's resolution to the SB0 rule, which has been reviewed i

and approved by the NRC, and will ensure that overall reliability of-the l

emergency electrical system is maintained. Based upon the reasons stated above,

i these changes will not cause a nuclear safety concern and are therefore

-l justified.

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ATTACHMENT 3 SIGNIFICANT HAZARDS CONSIDERATION EVALUATION PURSUANT TO 10 CFR 50.92 JOSEPH M. FARLEY NUCLEAR PLANT ELECTRICAL POWER SYSTEM TECHNICAL SPECIFICATION CHANGES IN RESPONSE TO THE STATION BLACK 0UT RULE i

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SIGNIFICANT HAZARDS CONSIDERATION EVALUATION PURSUANT TO 10 CFR 50.92 i

JOSEPH M. FARLEY NUCLEAR PLANT i

ELECTRICAL POWER SYSTEM TECHNICAL SPECIFICATION CHANGES IN RESPONSE TO THE STATION BLACK 0UT RULE i

PROPOSED CHANGES:

t The proposed revisions to Technical Specification and Bases 3/4.8.1 for both units include:

(i) delete references to diesel generator 2C from T.S. 3/4.8.1.1 and T.S 3/4.8.1.2;

'i (ii) revise the diesel generator test schedule based upon the NUMARC l

guidance for determining the number of allowable failures and valid demands; r

(iii) delete 600 volt load centers J and H as listed in T.S. 3/4.8.2; (iv) revise the requirements of T.S. 6.9.1.12 for the Annual Diesel Generator Reliability Report.

BACKGROUND:

On July 21,1988, Title 10 of the Code of Federal Regulation (10 CFR), Part 50, was amended to include a new section 50.63, entitled " Loss of All Alternating Current Power." This condition of a complete loss of AC electrical power to a t

nuclear power plant is referred to as a station blackout (SBO).

The SB0 rule requires each nuclear power plant to be capable of maintaining core cooling and appropriate containment integrity in order to withstand and recover from an SB0 of a duration based upon specific site characteristics.

SNC provided a response to the SB0 rule by letters dated April 12, 1989 and March 8,1990, in which proposed modifications will be made to the emergency electrical i

power systems to designate one of the existing emergency diesel generators (EDG) as an alternate AC (AAC) power source as defined in Regulatory Guide 1.155,

" Station Blackout."

In a Safety Evaluation Report (SER) dated April 25, 1991, e

the NRC concluded that the proposed use of an existing EDG as an AAC is an acceptable means of resolving the 580 issue.

Additional information about i

hardware and procedural modifications was requested by the NRC and subsequently provided by letter dated June 5, 1991.

In this letter, SNC stated that-modifications will be implemented during the Unit I twelfth and Unit 2 ninth 1

refueling outages to designate DG 2C as an AAC. These modifications will ensure that the train B safe shutdown loads in the SB0 unit can be powered by DG 2C by manual actions from the control room within 10 minutes of the determination of a blackout; and as such, diesel generator 2C will not automatically start during any design basis event.

A Supplemental SER was issued by the NRC on June.12, 1992 which stated that SNC's approach was acceptable. Final NRC approval of the SNC response to the SB0 rule was given in NRC letter dated August 14, 1992.

l

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O

b Following the SB0 modifications, diesel generator 2C will no longer be relied 1

upon for performing the functions of an emergency power source for design basis i

events (i.e., automatically starting upon a safety injection or loss of offsite power signal); therefore, the technical specifications must be revised to delete all references to its use as a design basis diesel generator.

DISCUSSION:

As stated in SNC's June 5,1991 response to the NRC, DG 2C will be dedicated as the AAC source for SB0 events. DG 2C will be connectable from the control room to the train B safe shutdown buses in either unit. With the remaining four EDGs, both units will continue to comply with the licensing basis for all design basis accidents, considering a single failure, without taking credit for DG 2C. The capacity of the remaining EDGs and their alignment will provide adequate power for the safe shutdown loads during the worst case loading scenarios (i.e., LOSP l

in both units concurrent with a LOCA in one unit).

SNC has re-examined the analyses provided in support of the technical 1

specification changes proposed by letter dated December 11, 1992 in light of the additional changes being proposed by this submittal.

Specifically, the l

justifications for the following changes were reviewed to determine if the conclusions of the previously submitted significant hazards considerations and environmental impact evaluations are affected: 1) reduction of the allowed outage time for an EDG from 18 days to 10 days, 2) retention of the exception to T.S. 3.0.4 which would allow a change in operating mode with one EDG inoperable, and 3) reducing the time allowed for operability verification of the remaining offsite circuit in the case of one inoperable offsite circuit The proposed revisions to the EDG surveillance test schedule incorporated into this submittal supersede those changes previously requested. All other changes

-included in the December 11, 1992 submittal are unaffected by these proposed -

changes.

In support of items 1 and 2 above, the safety analysis provided with the December 11, 1992 submittal explained that the A.C. electrical power system arrangement at FNP is designed with a nigher Jegree of flexibility than that assumed by the STS.

With the present FNP system design, for all combinations of a single l

inoperable EDG coincident with a dual unit LOSP and a LOCA on either unit, at least one safety-related train will be automatically powered at each unit.

I Currently, DG 20 will automatically start upon an LOSP or safety injection I

signal; however, only some small miscellaneous safe shutdown loads are supplied i

by DG 2C. SNC's assertion that FNP's electrical _ system design provides a high i

degree of flexibility is based upon the ability to align DG 2C to both unit's B-train emergency buses and manually add shutdown loads, if necessary. Although J

diesel generator 2C will no longer receive automatic start signals once the SB0

't modifications are completed,- the operator will still have the ability to manually start diesel generator 2C and add shutdown loads to the B-train emergency buses from the control room. Therefore, the degree of flexibility of the FNP emergency A.C. electrical power system design is not diminished, but is in fact enhanced by the SB0 modifications associated with DG 20.

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r With regard to Item 3 above, the reasoning stated for allowing the operator an

)

additional hour above the STS to perform the required surveillance is to avoid-1 distraction of the operator from urgent tasks associated with plant stabilization immediately following an LOSP.

This reasoning is unaffected by the proposed

}

additional changes.

l The proposed revisions to T.S. Table 4.8-1, " Diesel Generator Test Schedule" are consistent with positions developed by NUMARC through discussions with the NRC.

l The criterion of four failures in the last 25 valid tests establishes a threshold for acceptable EDG performance which will be indicative of possibly degrading EDG reliability.

Increasing the test frequency will provide for more timely accumulation of data upon which to base a judgment of the EDGs reliability.

In order to ensure that diesel generator 2C is maintained in a high state of i

readiness so that the flexibility afforded by its use is not diminished, SNC will implement a reliability program on 2C which will ensure that its reliability is maintained at 0.95 or greater and a maintenance program to ensure a high level l

of availability is maintained.

l The justification for removing 600 volt load centers J and H from the technical specifications was provided in the safety evaluation reports for license amendments 45 and 36, for Units 1 and 2, respectively, which deleted the river water system form the technical specifications; as such, this proposed change is 4

an administrative change only.

3 The required content of the annual EDG reliability report is being revised to include, in addition to the results of individual EDG testing per T.S. 4.8.1.1.2, l

the calculated unit reliability as dictated by the e'9 rule.

This change is i

1 being submitted in order to demonstrate compliance with prior commitments made in response to the SB0 rule.

4 ANALYSIS:

l I

l SNC has reviewed the requirements of 10 CFR 50.92 as they relate to the proposed changes to the technical specifications and considers these changes not to i

involve a significant hazards consideration. In support of this conclusion, the following analysis is provided:

i (1)

The proposed changes to the electrical system technical specifications l

will not involve a significant increase in the probability or consequences of an accident previously evaluated. The elimination of diesel generator 2C as an emergency power source will not impact the remaining four EDGs 1

ability to supply all shutdown loads during the worst case design basis i

accident with LOSP.

The revised testing schedule will provide assurance that individual EDGs are maintained in a high degree of reliability and i

that the calculated unit reliability is within the limits required by the

)

SB0 rule.

l (2)

The proposed changes will not create the possibility of a new or different kind of accident from any accident previously evaluated.

j No new failure mechanisms are being introduced which could create a.

j new or different accident than those previously evaluated.

All l

equipment required to complete a safe unit shutdown following a

]

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design basis event will continue to receive emergency electrical power should a total loss of offsite power occur.

(3)

The proposed changes do not involve a significant reduction in a margin of safety.

The emergency electrical power system's ability l

to cope with the worst case design event, considering a single failure, is unaffected by the proposed technical specification i

changes. The minor increase in electrical loading on the remaining 1

train B EDGs, as a result of the designation of DG 2C as the SB0 AAC, will not exceed the rated capacity of the EDGs.

The assumptions used in the analyses of the design basis events will not be impacted by the proposed elimination of DG 2C. The revised test schedule is consistent with the SB0 rule's goal of enhanced EDG reliability.

CONCLUSION:

Based upon the analysis provided herein, SNC has determined that the proposed I

changes to the technical specifications will not significantly increase the l

probability or consequences of an accident previously evaluated, create the possibility of a new or different kind of accident from any accident previously evaluated, or involve a significant reduction in a margin of safety. Therefore, SNC has determined that the proposed change meets the requirements of 10 CFR 50.92(c) and does not involve a significant hazards consideration.

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ATTACHMENT 4 e

6 ENVIRONMENTAL CONSIDERATION JOSEPH M. FARLEY NUCLEAR PLANT ELECTRICAL POWER SYSTEM TECHNICAL SPECIFICATION CHANGES IN RESPONSE TO THE STATION BLACK 0UT RULE f

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F R

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'. : L ENVIRONMENTAL CONSIDERATION JOSEPH M. FARLEY NUCLEAR PLANT ELECTRICAL POWER SYSTEM TECHNICAL SPECIFICATION CHANGES l

IN RESPONSE TO THE STATION BLACK 0UT RULE SNC has determined that the proposed changes to the technical specifications do not involve a significant hazards consideration.

The proposed changes do not adversely affect plant safety since the probability of an accident is not affected, nor is there any effect on the consequences of any accident.

No changes are being made in the types or amounts of any radiological or non-radiological effluents that may be released offsite.

The proposed changes do not involve any other environmental impacts.

No increase in individual or cumulative occupational radiation exposure will result from this change.

Additionally, these changes do not involve the use of any resources not previously considered in the Final Environmental Statement related to the operation of Farley Nuclear Plant.

Therefore, the proposed changes to the technical specifications will not significantly affect the quality of the environment.

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ML20012G560

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