ML20154D201

Proposed Tech Specs Changing Surveillance Testing of Diesel Generators

ML20154D201
Person / Time
Site:	Limerick
Issue date:	09/09/1988
From:	PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML20154D177	List: ML20154D173 ML20154D191 ML20154D201
References
NUDOCS 8809150180
Download: ML20154D201 (13)

Text

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3/4.8 ELECTRICAL FOWER SYSTEMS 3/4.073I A.C. SOURCES A.C. SOUNCES - OPERATING

( L/MITING CONDITION FOR OPERATION 3.8.1.1 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

a. Tso physically independent circuits between the offsite transmission network and the onsite Class lE distribution system, and

b. Four separate and independent diesel generators, each with:

1. A separate day tank containing a minimum of 200 gallons of fuel,

2. A separate fuel storage system containing a minimum of l 33,500 gallons of fuel, and

, 3. A separate fuel transfer pump. >

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3.

ACTION: i

a. With one diesel generator of the above required A.C.

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

Surveillance Requirement 4.8.1.1.1.a within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and at ,,

least once per 7 days thereafter. If the diesel generator 4

became inoperable for any reason other than preplanned i preventative maintenance, modification or testing,  !

demonstrate the OPERABILITY of the remaining operable diesel '

! generators by performing Surveillance Requirements

] 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5 for one diesel generator at a time, within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />

• and at least once per 7 days thereafter. Restore the inoperable diesel generator to OPERABLE status within 92 days or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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b. With two diesel generators of the above required A.C.

electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at

, least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter. Perform requirements of i Action e. Perform Surveillance Requirements 4.8.1.1.2.1.4 and 4.8.1.1.2.a.5, for one diesel generator at a timo,

commencing within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. Restore at least one of tne inoperable diesel generators to OPERABLE status within 72 i

hours or be in at least HOT SHUTDOWN within  ;

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• Contrary to the provisions of Specification 3.0.2, this test is i

required to be completed regardless of when the inoperable diesel 2

generator is restored to OPERABILITY for failuren that are

! potentially generic to the remaining Unit 1 diocel generators and

} for which appropriate alternative testing cannot be designed.

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1 LIMERICK - UNIT 1 3/4 8-1 g

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3/4.8 ELECTRICAL POWER SYSTEMS (Continued) 3/4.8.1 A.C. SOURCES A.C. SOURCES - OPERATING

' LIMITING CONDITION FOR OPERATION l

2. the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following r 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />,

c. With three diesel generators of the above required A.C.  !

electrical power sources inoperablo, demonstrate the OPERABILITY of the remaining A.C. sources by performing .

Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at  !

least once per 8, hours thereafter; and perform Surveillance Requirements 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5 for the  !

remaining diesel generator, commencing within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.  !

Restore at least one of the inoperable diesel generators to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT SHUTDOWN  ;

within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the '

following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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d. With one offsite circuit and one diesel generator of the 4

above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by 1 performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> l 4

and at least'once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter. If the diesel  !

generator became inoperable for any reason other than

! preplanred preventative. maintenance, modifications or j testing, demonstrate the OPERABILITYaof the remaining diesel generators by performing Surveillance Requirements i j 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5, for one diesel generator at  :

a time, commencing within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> *. Restore at least two i

l. offsite circuita to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.from the '

(

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

d 4

i

• Co:itrary to the provisions of Specification 3.0.2, this test is  !

i required to be completed regardless of when the inoperable diesel <

, generator is restored to OPERABILITY for failures that are. f l potentially generic to the remaining Unit 1 diesel generators and i j for which appropriate alternative testing cannot be designad, j i

t. LIMERICK - UNIT 1 3/4 8-la R l

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- - _ _ _ _ - _ - _ _ _ _ _ = _ - _ .

ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION (Continued)

ACTION,: (Continued)

e. With two diesel generators of the above required A.C.

electrical power sources inoperable, in addition to ACTION b., above, verify within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> that all required systems, subsystems, trains, components, and devices that depend on the remaining diesel generators as a source of emergency power are also OPERABLE; otherwise, be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 houre,

f. With one offsite circuit of the above required A.C.

electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C., sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; and if any of the diesel generators have not been successfully tested within the preceding 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, demonstrate OPERABILITY of such diesel generators by performing Surveillance Requirements 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5, for one diesel at a time, commencing within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Restore at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

g. With two of the above required offsite circuits inoperable, demonstrate the OPERABILITY of all of the above required diesel generators by performing Survo ' lance Requirements 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5, for e diesel generator at a time, commencing within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> un .s the diesel generators are already operating; re..are at least one of the inoperable offsite circuits to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. With only one offsite circuit restored to OPERABLE status, restore at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD l SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

h. With one offsite circuit and two diesel generators of the )

above required A.C. ciectrical power sources inoperable, I demonstrate the OPERABILITY of the remaining A.C. sources by l performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; perform l Surveillance Requirements 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5 for one diesel generator at a time, commencing within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

Restore at least one of the above required inoperable A.C.

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

LIMERICK - UNIT 1 3/4 8-2

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUTREMENTS 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the onsite Class lE distribution system shall be:

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

b. Demonstrated OPERABLE at least once per 18 months during shutdowa by transferring, manually and automatically, unit power supply from the normal circuit to the alternate circuit.

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

a. In accordance with the frequency specified in Table 4.8.1.1.2-1 on a STAGGERED TEST BASIS by:

1. Verifying the fuel level in the day fuel tank.

2. Verifying the fuel level in the fuel storage tank.

3. Verifying the fuel transfer pump starts and transfers -

fuel from the storage system to the day fuel tank.

4. Verify that the diesel can start

• and gradually accelerate to synchronous speed with generator voltage and frequency at 4285 + 420 volts and 60 + 1.2 HZ.

5. Verify diesel is synchronized, gradually loaded

• to an indicated 2600 - 2700 KW** and operates with this load for at least 60 minutes.

6. Verifying the diesel gent.rator is aligned to provide standby power to the ass)ciated emergency busses.

7. Verifying the pressure in all diesel generator air start receivers to be greater than or equal to 225 psig.  ;

• This teot shall be conducted in accordance with the i

manufacturer's recommendations regarding engine pre-lube and .

l warmup procedures, and as applicable regarding loading l and shutdown recommendations.  ;

• • This band is meant as guidance to avoid routine overloading of the engine. Loads in axcess of this band for special testing under direct monitoring by the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

LIMERICK - UNIT 1 3/4 8-3

ELECTRICAL POWER SYSTEMS '

SURVEILLANCE REQUIREMENTS (Continusd)

b. By removing accumulated water:

1) From the day tank at least once per 31 days and after each occasion when the diesel is operated for greater than 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, and

2) From the storage tank at least once per 31 days. f

c. By sampling new fuel oil in accordance with ASTM D4057-31 prior to  ;

addition to the storage tanks and '

1) By verifying in accordance with the tests snecified in ASTM i D975-81 prior to addition to the storage .aks that the  ;

sample has:

)' a) An API Gravity of within 0.3 degrees at 60 degrees F or '

a specific gravity of within 0.0016 at 60/60 degrees F, when compared to the supplier's certificate or an .

absolute specific gravity at 60/60 degrees F of greater

.than or equal to 0.83 but less than or equal to 0.89 or -

an API gravity at 60 degrees F of greater than or equal to 27 degrees but less than or equal to 39 degrees.

b) A kinematic viscosity at 40 degrees C of greater than or equal to 1.9 centistokee, but less than or equal to.4.1 i centistokes, if gravity was not determined by comparison ,

with the supplier's certification. t j

c) A flash point equal to or greater than 125 degrees F, and d) A clear and bright appearance with proper color when tested in accordance with ASTM D4176-82.

2) By verifying within 31 days of obtaining the sample that the i 4

other properties specified in Table 1 of ASTM 0975-81 are met  ;

) when tested in accordance with ASTM D975-81 except that the i analysis for sulfur may be performed in accordance with ASTM r 4

D1552-79 or ASTM D2622-82.

d) At least once per every 31 days by obtaining a sample of fuel oil i I

from the storage tanks in accordance with ASTM D2276-78, and '

verifying that total particulate contamination is less than 10 i

mg/ liter when checked in acccedance with ASTM D2276-78, Method A.

e) At least once per 18 months by:

1 1. Subjecting the diesel to an inspection in accordance with

! procedures prepared in conjunction with its manufacturer's

recommendations for this class of standby service.

2. Verify the diesel generator capability to reject a load of i greater than or equal to that of the RHR Pump Motor (992 Kw) i for each diesel generator while maintaining voltage at 4285 1

420 volts and frequency at 60 1 1.2 hz.

LIMERICK - UNIT 1 3/4 8-4 l

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, ELECT,RICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

3. Verifying the diesel generator capability to reject a load of r

2850 kW without tripping. The generator voltage shall not exceed 4784 volts during and following the load rejection.

4. Simulating a loss-of-offsite power by itself,, ands a) Verifying de-energization of the emergency busses and load shedding from the emergency busses.  :

b) Verifying t'he diesel generat'or starts

• on the auto-start l signal, energizes the emergency busses within 10 seconds, energizes the auto-connected loads through the individual load timers and operates for greater than or .

equal to 5 minutes while its generator is loaded with the shutdown loads. After energization, the steady- '

state voltage and frequency of the emergency busses shall be maintained at 4285 ~+ 420 volts and 60 + 1.2 Hz

~

during this test.

5. Verifying that on an ECCS actuation test signal, without loss-of-offsite power, the diesel generator starts

• on the auto-start signal and operates on standby for greater,than or l '

equal to 5 minutes. The generator voltage and frequency shall reach 4285 + 420 volts and 60 + 1.2 Hz within 10

~ ~

seconds after the auto-start signal; the steady state generator voltage and frequency shall be maintained within these limits during this test. ,

6. Simulating a loss-of-offsite power in conjunction with an ECCS actuation test signal, ands a) Verifying de-energization o! the emergency busses and load shedding from the emergency busses.

b) Verifying the diesel generator starts

• on the auto-start l signal, energizes the emergency busses within 10 seconds, energizus the auto-connected shutdown loads through the individual load timers and operates for 1 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 4285 + 420 volts and 60 +

~ ~

1.2 Hz during this test.

7. Verifying that all automatic diesel generator trips, except engine overspeed and generator differential over-current.are  :

automatically bypassed upon an ECCS actuation signal. <

• This test shall be conducted in accordance with the manufacturer's recommendations regarding engine prelube and warm-up procedures, and as applicable regarding loading and shutdown recommendations.

LIMERICK - UNIT 1 3/4 8-5

. 4 ELECTRICAL POWER SYSTEMS l SURVEILLANCE REQUIREMENTS (Continued)

" 8. Verifying the diesc1 generator operates

• for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the diesel generator shall be loaded to an indicated target value of 2850 kW (between 2800 - 2900 kW)** and during the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of this test, the diesel generator shall be loaded to an indicated 2600 - 2700 kW**. Within 5 minutes after completing this 24-hour test, perform Surveillance Requirement 4.8.1.1.2e.4.b**8

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9. Verifying'that the auto-connected loads to each diesel generator do not exceed the 2000-hour rating of 3100 kW.

10. Verifying the diesel generator's' capability tot a) Synchronize with the offsite power source while the generator is' loaded with its emergency loads upon a simulated restoration of offsite power, b) Transfer its loads to the offsite power source, and c) Be restored to its standby status.

11. Verifying that with the diesel generator operating in a .

test mode and' connected to its bus, a simulated ECCS actuation signal overrides the test mode by (1) returning the diesel generator to standby operation, and (2) automatically energizes the emergency loads with offsite power.

12. Verifying that the automatic load sequence timers are OPERABLE with tne interval between each load block within +~

10% of its des'.gn interval.

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

• • This band is mear.t as guidance to avoid routine overloading '

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

• • • If Surveillance Requirement 4.8.1.1.2e.4.b is not satisfactorily completed, it is not necessary to repeat tne preceding 24-hour test. Instead, the diesel generator may be operated at 2600-2700 kW for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or until operating t<smperature has stabilized.

t LIMERICK - Oh!T 1 3/4 8-6

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ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) i

j. 13. Verifying that the following diesel generator' lockout features prevent diesel generator starting or.ly when

required:

a) Control Room Switch In Pull-To-Lock ;With Local / Remote Switch in Remote) .

j b) Local / Remote Switch in Local.

i ,i c) Emergency Stop l I , i' l I

f. At least once per 10 years or after any modifications which  !

l could affect diesel generator interdependence by starting:* '

.h i all four diesel generators simultaneous),y, during shutdown, i L .and verifying that all four diesel generators accelerate. to  ;

I at least 882 rpm in less than or equal to 10 seconds.,,  ;

i i l g. At least once per 10 years by: '

1 1 1. Draining each fuel oil storage tank, removing the accumulated sediment and cicaning.the tank,using a 3

sodium hypochlorite or equivalent solu' tion, and '

4

2. Performit.g a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND of the ASME Code in accordance with ASME ,

Code Section XI Article IWD-5000. ,

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• This test chall be conducted in accordance with the  !

manufacturer's recommendations regarding engine prelube and ,

) warmup procedures, and as applicable regardirig loading

) and shutdown recommendations. '

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LIMERICK - UNIT i 3/4 8-7 i

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ELECTRICAL POWER SYSTEMS SURVBILLANCE REQUIREMEdTS (Continued)

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

• and verified t, accelerate to synchronous speed in less than or equal to 10 seconds. The generator voltage ard frequency shall reach 4285 + 400 volts and 60 + 1.2 HZ within 10 seconds after the start signal. The diesel generatot shall be started for this test by using one of the following signals: ,

. I a) Manual *** '

b) Simulated loss-of-offsite power by itself.

c) Simulated loss-of-offsito power in conjunction with an ECCS actuation test signal, d) An ECCS actuation test signal by itself.

The generator shall be manually synchronized to its appropriate emergency bus, loaded to an indicated 2600-2700 KW** in less than or equal to 200 seconds, and operate for at least 60 minutes. This test, if it is performed so it coincides with the testing required by Surveillance Requirement 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5, may also serve to concurrently meet those requirements as well.

4.8.1.1.3 Reports - All diecel generator failurts, valid or non-valid, shall Be reported to the Commission in a Special report pursuant to Specification 6.9.2 within 30 days. Reports of diesel generator failures shall include the information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

• This test shall be corducted in accordance with the manufacturer's recommendations regarding engine prelube and warmup procedures, and as applicable regarding loading and shutdown recommendations.

• • This band is meant as guidance to avoid routine overloading of the engine. Loads in excess of this band for special testing under direct monitoring by the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

• • • rf diesel generator started manually from the control room, 10 seconds after the automatic prelube period.

LIMERICK - UNIT 1 3/4 8-7a l

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N TABLE 4.8.1.1.2-1 i

DIESEL GENERATOR TEST SC,HEDULE NUMBER OF FAILURES IN NUMBER OF FAILURES IN LAST 20 VALID DEMANDS

• LAST 100 VALID DEMANDS

• TEST FREQUENCY j less than or equal less than or equal at least once per to 1 or, to 4 31 days

g.; eater than or greater than or at least once per equal to 2** or, equal to S 7 days t

• Criteria for determining the number of failures and number of valid demands shall be in accordance with Regulatory Position C.2,e of Regulatory Gvide 1.108, but determined on a per diesel generator basis.

I For the purposes of dete: mining the required test frequency, the previous test failure' count may be reduced to zero if a complete diesel overhaul to like-new conditions 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. Ten of these tests shall be accordance with Surveillance Requirements 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5, tour tests, in accordance with Surveillance Requirement 4.8.1.4.2.h.

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

• • The associated test f requency shall be maintained u.itil seven consecutive failure free demands have been performed and the number of failures in the last 20 demands have been reduced to one, i LIMERICK - UNIT 1 3/4 8-8

4 ELECTRICAL POWER SYSTEM,5,

. A.C. SOURCES - SHUTOO_WN .

LIMITING CONDITION FOR OPERATION i

i 3.8.1.2 As a minimum, the following A.C. electrical power sources shall be

OPERABLE

3 a. One circuit between the offsite transmission network and the onsite Class l IE distribution system, and ,

b. Two diesel generators each with: I i s

1. A day fuel tank containing a minimum of 200 gallons of fun... i i 2. A fuel storagt system containing a minimum of 33,500 gallons of i i fuel. >

1

3. A fuel transfer pump.  !

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j. APPLICABILITY: OPERATIONAL CONDITIONS 4, 5, and *.

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l ACTION: j i

! a. With less'than the above required A.C. electrical power sources OPERABl.E.

j suspend CORE At TERATIONS, handling of irradiated fuel in the secor.dary- l 1 conteinment, operations with a potential for draining the reactor vessel  !

and crane operations over the spent fuel storage pool when fuel i assemblies are stored thereir-. In addition, w5en in OPERATIONAL i CONDITION 5 with the water level le!.s than 22 feet above the reactor  !

pressure vessel flange, immediately initiate corractive action to restore '

the required power sources to OPERABLE status as soon as practical.  :

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b. The pr. visions of Specification 3.0.3 are not applicable. l i

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SURVEILLANCE,PEQUIREMENTS i

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1 1 4.8.1.2 At least the above required A.C. electrical power sources shall be {

demonstrated OPERABLE per Surveillance Requirements 4.8.1.1.1, 4.8.1.1.2, and '

4 4.8.1.1.3.

4 i *When nand11ng irradiated fuel in ene secondary containment. 1 1

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l l LIMERICK - UNIT 1 3/4 8-9 .i

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3/4.8_ ELECTAICAL POWER SYSTEMS 1

BASES i 3/4.8.1. 3/4,8.2, and 3/4.8.3 A.C. SOURCES. 0.C. SOURCES. and ONSITE POWER DISTRIBUTION SYSTEMS

The OPERABILITY of the A.C. and 0.C. power sources and meiated distribution j 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 J

and (2) the mitigation and control of accident conditions within the facility. .

The minimun specified independent and' redundant A.C. and 0.C. power sources and '

3 distribution systems satisfy the requirements of General Design Criterion 17 of

. Appendix A to 10 CFR Part 50. .

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

sources provide restriction oton continued facility operation commensurate with ,

4 the lesil of degradation. The OPERABILITY of the power sources are consistent  !

) with tht initial condition assumptions of the safety analyses and are based upon i maintalnir.g at least two of the onsite A.C. and the corresponding 0.C. power sources and associated distribution systems OPERABLE during accident conditions t coincident with an assumed loss-of-offsite power and single failure of the other  ;

d onsite A.C. and 0.C. source. 7 The A.C. and 0.C. source allowable out-of-service times are based on  !

Regulatory Guide 1.93, "Availability of Electrical Power Scurces," December 1974. [

] When twc diesel generators are inoperable, there is an additional ACTION >

1 requirement to verify that all required systems, subsystems, trains, components, j j and devices, that depend on the remining OPERABLE diesel generators as a source  !

of emergency power, are also OPERAFLE. This r2quirement is intended to provide I l assurance that 4 loss-of-offsite power event will not result in a complete loss of l 1 safety function of critical systems during the period one of the diesel generators l

! is inoperable. The term verify as used in this context means to administratively '

check by examining logs or other ir. formation tn determine if certain components j are out-of-service for maintenance or other reasons. It does not mean r0 perform .

J the surveillance requirements needed to demonstrate the OPERABILITY of tne  !

component.

The OPERABILITY of the minimum specified A.C. and 0.C. power sources and i essociated distribution systems during shutdown and refueling ensures that (1) the i facility can be maintained in the shutdowr, or refueling condition for extended i time periods and (2) sufficient instrumentation and control capability is ,

available for monitoring and maintaining the unit status.  !

! The surveillance requirements for demonstrating the OPERABILITY of the diesel  !

generators are in accordance with the recommendations of Regulatory Cuide 1.9, "Selection of Diesel Generator Set Capacity for Standby Power Supplies," March 10 1971, Regd atory Guide 1.137 "Fuel-Oil Systems for Standby Diesel Generators," i j Revision 1, October 1979 and Regulatory Guide 1.108, "Periodic Testing of Diesel  !

i Generator Units Used as Onsite Electrical Power Systems at Nuclear Power Plants,"

l Revision 1. August 1977 except for paragraphs C.2.A(3), C.2.C(1), C.2.C(2),

i C.2.0(2), C.2.0(3) and C.2.0(4). The exceptions to Regulatory Guide 1.108 allow l J

for gradual loading of diesel generators during testing and decreased surveillance  ;

j test frequencies (in response to Generic Letter 84-15).  ;

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LIMERICK - UNIT 1 8 3/4 8-1 l 1

s  !

tie 4 UNITED STATES OF AMERICA NUCLFJR REGULATORY C0f MISSION In the Matter of  : Docket No.: 50-352 PHILADELPHIA ELECIRIC COMPANY  :

(Limerick Generatiri Station,  :

Unit No. 1)

CERTIFICATE OF S E VICE I hereby certify that copies of the foregoing Application for Amendment of Facility Operating License NPF-39 in the above captioned uattet were served on the following by deposit in the United States Mail, first clat postage prepaid, on the 9th day c,f September,1988.

William T. Russell, Regional Administrator U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, CA 19406

1. J. Kenny U.S. Nuclear Regulatory Commission Senior Resident inspector P.O. Box 47 Sanatcga, PA 19464 Thomas Gerusky, Director Bureau of Radiological Protection Department s* Environmental Resources P.O. Box 2003 Harrisburg, PA 17120  ;

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Eug e 4. Bradley

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Attorney for Philadelphia Electric Cocpany I

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