ML20082R862

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Proposed marked-up Tech Spec Changes Re Electrical Power Sys
ML20082R862
Person / Time
Site: LaSalle  Constellation icon.png
Issue date: 12/09/1983
From:
COMMONWEALTH EDISON CO.
To:
Shared Package
ML20082R861 List:
References
NUDOCS 8312130324
Download: ML20082R862 (15)
v • d • e


Text

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3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C'. SOURCES A.C. SOURCES - OPERATING LIMITING CONDITION FOR OPERATION 3.8.1.1 Ao a minimum, the following A.C. electrical power sources shall be OPERABLE:

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a. Two physicaliy independent circuits between the offsite transmission network and the onsite Class 1E distribution system, and
b. Separate and independent diesel generators 0, lA, 2A and 1B with:
1. For diesel generator 0, lA and 2A:

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

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

2. For diesel generator 18, a separate fuel storage tank / day tank containing a minimum of 29,750 gallons of fuel.
3. A separate fuel transfer pump.

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3.

ACTION:

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

the OPERABILITY of the remaining A.C. sources by performing Surveil-lance Requirements 4.8.1.1.1.a within one hour, and 4.8.1.1.2.a.4,_,J for one diesel. generator at a time, within rs, ano 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; restore at lea @st two offsite circuits and diesel generators 0 and 1A 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 />.

b. With one offsite t;rcuit and diesel gene'ator r 0 or 1A of the above required A.C. electrical power sources inoperable, demonstrate the -

OPERABILITY of the remaining A.C. sourc's e by performing Surveillance ,

Requirsments 4.8.1.1.1.a within one hour, and 4.8.1.1.2.a.4. for one ; -""""

diesel generator at a time, within theeejhours, 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; restore at least one of the 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

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diesel generators 0 and 1A 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 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 />.

k-3/4 8-1 LA SALLE - UNIT 1 B312130324 831209 PDR ADOCK 05000373 P PDR

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ELECTRICAL POWER SYSTEMS

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LIMITING CONDITION FOR OPERATION (Continued)

ACTION (Continued)

c. With both of the above required offsite circuits inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by par-forming Surveillance Requirement 4.8.1.1.2.a.4, for one diesel generator at a time, within-6ewekhours, 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, unless the diesel generators are already operating; restore at least one of the inoperable offsite circuits to OPERABLE

. status within 24. hours 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 wfthin 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 fo11owing'24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

d. With diesel generators 0 and 1A of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remain-ing A.C. sources by performing Surveillance Requirements 4.8.1.1.1.a within one h_our and 4.8.1.1.2.a.4, for one diesel generator at a 7/ time, witnink4we hours 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; <[-

restore at least one of the inoperable diesel generators 0 and 1A 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 />.

Restore both diesel generators 0 and 1A 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 />.

e. With diesel generator 18 of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirements 4.8.1.1.1.a within one__ hour, and 4.8.1.1.2.a.4, for one diesel generator at a sime, witn1j 4heee hours, and at 1. east once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; restorethe{noperabledieselgenerator13toOPERABLEstatuswithin i

72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or declare the HPCS system inoperable and take the ACTION required by Specification 3.5.1.

f. With diesel generator 2A of the above required A.C. electrical power

, sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirements 4.8.1.1.1.a and en--

4.8.1.1.2.a.4, for diesel generator IA, within enefhoudland 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; restore the inoperable diesel generator 2A 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 declare standby gas treatment. system subsystem B, Unit 2 drywell and suppression chamber- hydrogen recombiner system, and control room and auxiliary electric equipment room emergency filtration system train B inoperable b and take the ACTION required by Specifications 3.6.5.3, 3.6.6.1.,

and 3.7.2. ,

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

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 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 shutdown by manually transferring unit power supply from the normal circuit to the alternate circuit.

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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. Verifying the diesel starts from ambient condition and lerates to 900 rpm + 5%, -2% in less than or equal to 13 second - he generator voltage and frequency shall 4160 1 150 volts and 60 + 3.0, -1.2 Hz within 13 secon ter the start signal.
5. Verifying the diesel generator is synchro ' d, loaded to greater than or equal to 2600 kw within 60 secon d operates with -

this load for at least 60 minutes.

6. Verifying the diesel generator is aligned to provide standby power to the associated emergency busses.
7. Verifying the pressure in all diesel generator air start receivers to be greater than or equal to 200 psig.
b. At least once per 31 days and after each operation of the diesel where the period of operation was greater than or equal to 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> by checking for and removing accumulated water from the day fuel tanks.
c. At least once per 92 days and from new fuel oil prior to addition to tha storage tanks by verifying that a sample obtained in accordance with ASTM-D270-1975 has a water and sediment content of less than or equal to 0.05 volume percent and a kinematic viscosity @ 40*C of greater than or equal to 1.9 but less than or equal to 4.1 when tested in accordance with ASTM-0975-77, and an impurity level of less than 2 mg. of insolubles per 100 ml. when tested in accordance

. with ASTM-D2274-70.

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(W LA SALLE - UNIT 1 3/4 8-3

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Insert for Page 3/4.8-3 -

  • These diesel generator starts from ambient conditions shall be performed only once per 184 days in these surveillance tests and all other engine starts for the purpose of surveillance testing shall be preceded by an engine prelube period and/or other warmup procedures recommended by the manufacturer, so that mechanical stress and wear on the diesel engine is minimized.

I 7763N

. ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) l

e. At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting diesel gener-ators 0, 1A and 1B simultaneously, during shutdown, and verifying that all three diesel generators accelerate to 900 rpm + 5, -2% in less than or equal to 13 seconds.
f. At least once per 10 years by:
1. Draining each fuel oil storage tank, removing the accumulated sediment and. cleaning the tank using a sodium hypochlorite or equivalent solution, and
2. Performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND, of the ASME" Code in accordance with ASME Code Section 11, Article IWD-5000.

4.8.1.1.3 Reports - All diesel generator failures, valid or non-valid, shall be reported to the Commission pursuant to Specification 6.6.B. Reports of diesel generator failures shall include the information recommended in Regula-tory Postion C.3.b of Regulatory Guide 1.108, Revision 1, August 1977. If the number of failures in the last 100 valid " tests, on a per nuclear unit basis, i is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position c.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

TABLE 4.8.1.1.2-1 DIESEL GENERATOR TEST SCHEDULE Number of Failures in Last 100 Valid Tests

  • Test Frequency

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<1 At least once per 31 days 2 At least once per 14 days 3 At least once per 7 days

>4 At least once per 3 days

" Criteria for determining number of failures and number of valid tests shall be in.accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, Revision 1, August 1977, where the last 100 tests are determined on a per nuclear unit basis.

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3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1 and 3/4.8.2 A.C. SOURCES and ONSITE POWER DISTRIBUTION SYSTEMS The OPERABILITY of the A.C. and D.C. power sources and associated q distribution systems during operation ensures that sufficient power will be

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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 a redundant A.C. and D.C. power sources and distribution systems satisfy the

, requirements of General. Design Criteria 17 of Appendix "A" to 10 CFR 50.

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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 1 sources are consistent with the initial condition assumptions of the accident

- analyses and are based upon maintaining at least Division I or II of the e onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite
- power and single failure of one of the two onsite A.C. sources. Division III supplies the high pressure core spray (HPCS) system only.

3 u 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 M extended time periods and (2) sufficient instrumentation and control g capability is available for monitoring and maintaining the unit status.

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The surveillance requirements for demonstrating the OPERABILITY of the

_, diesel generators are in accordance with the recommendations of Regulatory y Guide 1.9, " Selection of Diesel Generator Set Capacity for Standby Power 4 Supplies," March 10, 1971, with the exception noted in Appendix B to the FSAR, y and Regulatory Guide 1.108, " Periodic Testing of Diesel Generator Units Used

as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1,

- August 1977. '"

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

' "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large J- Lead Storage Batteries for Generating Station and Substations."

2 Verifying average electrolyte temperature above the minimum for which the

_ battery was sized', total battery terminal voltage onfloat charge, connection resistance values and the performance of battery service and discharge tests

& ensures the effectiveness of the charging system, the ability to handle high

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discharge rates and compares the battery capacity at that time with the rated e capacity.

$ LA SALLE - UNIT 1 B 3/4 8-1 7^

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Insert B.for Page B 3/4 8-1 ,.

  • With the exception of the semi-annual fast start no starting t.ime requirements are required to meet the valid-test requirement of Regulatory Guide 1.108.

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7763N isi ___ _ _ _ _ _ _ _

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3/4.8 ELECTRICAL POWER SYSTEMS (({Q}yg]l  !

3/4.8.1 A.C. SOURCES A.C. SOURCES - OPERATING -

LIMITING CONDITION FOR OPERATION

3. 8.1.1 As a minimum, the following A.C. electrical power sources shall be OPERABLE:
a. Two physically indeoendent circuits between the offsite transmission network and the onsite Class 1E distribution system, and
b. Separate and independent diesel generators 0, 1A, 2A and 2B with:
1. For diesel generator 0, lA and 2A:

a) A separate day fuel tank containing a minimum of .

250 gallons of fuel, b) A separate fuel storage system containing a minimum of 31,000 gallons of fuel.

2. For diesel generator 28, a separate fuel storage tank / day tank containing a minimum of 29,750 gallons of fuel.
3. A separate fuel transfer pump.

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Ao*LICABILITY: OPERATICNAL CCNDITIONS 1, 2, and 3.

ACTION:

"a. With either one offsite circuit or diesel generator 0 or 2A of the '

above required A.C. electrical power sources inoperable, demonstrate the lance OPERABILITY Requirements of 4.8.1.1.1.a the remaining within A.C.1sources hour, and by 4.8.1.1.2.a.4.

performing Surveil 2 -"

for one diesel generator at a time, within A% hours, 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; restore at least two offsite circuits and diesel generators 0 and 2A 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.

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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 />.

b. With one offsite circuit and diesel generator 0 or 2A of the above -

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

Requirements 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 4.8.1.1.2.a.4.. for one -

diesel generator at a time, within Yfhours, 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; restore at least one of the 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 diesel generators 0 and 2A 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 the l 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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LA SALLE - UNIT 2 3/4 8-1

g -g. sem -p >: si .i i ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION (Continued)

ACTION: (Continued) .

c. With both of the above required offsite circuits inoperable, i demonstrate the OPERABILITY of the remaining A.C. sources by per-forming Surveillanca Requirement 4.8.1.1.2a.4. . for one diesel . -

gererator at a time, within fylours, 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, unless the diesel generators are already operating; restore at least one of the inoperable offsite circuits to OPERABLE status witnin 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 s 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 SHUTOOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, r

d. With diesel generators 0 and 2A of tne above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remain-J L ing A.C. sources by performing Surveillance Requirements 4.8.1.1.la.

4 / within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and 4.8.1.1.2a.4., for one diesel generator at a time, -

1 hours 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; restore at least one of the inoperable diesel generators 0 and 2A to OPERABLE i status witnin 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 i 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 both diesel generators 0 and 2A 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 />.

e. With diesel generator 2B of the above required A.C. electrical power

. sources inoperable, demonstrate the OPERABILITY of the remaining A.C. cources by performing Surveillance Requirements 4.8.1.1.la.

1 '

within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, and 4.8.1.1.2a.4. , for one diesel generator at a

, wn.nin g hours, 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; f e

4 restore the inoperable diesel generator 2B 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 declare the HPCS system inoperable and take the ACTION required by Specification 3.5.1.

- a

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

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sources inoperable, demonstrate the OPERABILITY of the remaining s A.C. sources by performing Surveillance Requirements 4.8.1.1.la. and 1 4.8.1.1.2a.4. for diesel generator 2A, within 2fhoursland _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; restore the inoperable diesel generator 1A 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 declare sta'ndby D

i gas treatment system subsystem A, Unit 1 drywell and suppression i chamber hydrogen recombiner system, and control room and auxiliary

- electric equipment room emergency filtration system train A inoperable and take the ACTION required by Specifications 3.6.5.3, 3.6.6.1, and j 3.7.2; continued performance of Surveillance Requirements 4.8.1.1.la.

and 4.8.1.1.2a.4. for diesel generator 2A is not required provided

  1. the above systems are declared inoperable and the ACTION of their
I respective specifications is taken. -

A OCT 4 1S P*

LA SALLE - UNIT 2 3/4 8-2

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ELECTRICAL POWER SYSTEMS { { ,} } ] CI.f y f SURVEILLANCE REOUIREMENTS 4.8.1.1.1 Each of.the above required independent circuits between the offsite transmission network and.the onsite Class 1E distribution system shall be: '

a. Determined OPERABLE at least once per 7 days by verifying correct breaker alignments and indicated power availability, and
b. Demonstrated OPERA 8LE at least once per 18 months during shutdown by manually t- nsferring 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 byi
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.

t 4. Verifying the diesel starts from ambient condition and erates to 900 rpm + 5%, -2% in Sess than or equal to 13 secon he generator voltage and frequency shall 160 2 150 volts and 60 + 3.0, -1.2 Hz within 13 secon ter the start signal. N

5. Verifying the diesel generator is synchro d, loaded to greater -

than or equal to 2600 kw within 60 second nd operates with this lead for at least 60 minutes.

6. Verifying the diesel generator is aligned to provide standby power to the associated emergency busses.
7. Verifying the pressure in all diesel generator air start receivers to be greater than or equal to 200 psig. .

, , , b. ,, At least once per 31 days and after each operation of the diesel. . .

where the period of operation was greater than or equal to 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> by checking for and removing accumulated water from the day fuel tanks.

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

. the storage tanks by verifying that a sample cotained in accordance

. . . with ASTM-0270-1975 has a water and sediment content of less than or

. equal to 0.05 volume percent and a kinematic viscosity 9 40*C. of .

greater than or equal to 1.9_but less than or equal to 4.1 when

. ' tested in accordance with ASTM-0975-77, and an impurity level.of les's than 2 sq. of insolubles per 100 al. when tested irt accorcance with ASTM-02274-70.

N (b M ~~

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  • These diesel generator starts from ambient conditions shall be performed only once per 184 days in these surveillance tests and all other engine starts for the purpose of surveillance testing shall be

. preceded by an engine prelube period and/or other warmup procedures recommended by the manufacturer, so that mechanical stress and wear on the diesel engine is minimized.

7763N f

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ELECTRICAL POWER SYSTEMS k SURVEILLANCE REOUIREMENTS (Continued)

e. At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting diesel gener-ators 0, 2A, and 28 simultaneously, during shutdown, and verifying that all three diesel generators accelerate to 900 rpm + 5, -2% in less than or equal to 11 seconds. .
f. At least once per 10 years by:
1. Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite or equivalent solution, and
2. Performing a pressure test of those portions of the diesel fuel.cil system designed to Section III, subsection ND, of the ASME Code in accordance with ASME Code Section 11, Article IWD-5000. -
4. 8.1.1. 3 Recorts - All diesel generator failures, valid or non-valid, shall be reported to the Commission pursuant to Specification 6.6.B. Reports of diesel generator failures shall include the information recommended in Reguia-tory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977. If the l number of failures in the last 100 valid ti.sts, en a per nuclear unit basis, is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position c.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

TABLE 4.8.1.1.2-1 DIESEL GENERATOR TEST SCHEDULE Number of Failures in Last 100 Valid Tests

  • Test Frecuency 5,1 At least once per 31 days 2 At least once per 14 days 3 At least once per 7 days

>4 At least once per 3 days

" Criteria for determining number of failures and number of valid tests shall be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, Revision 1, August 1977, where the last ")

100 tests are determined on a per nuclear unit basis.

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m 3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/a.8.1 and 3/4.8.2 A.C. SOURCES and ONSITE POWER OISTRIBUTION SYSTEMS The OPERABILITY of the'A.C. and 0.C. power sources and associated ,

distribution systems during operation ensures that sufficient power will be available to supply the safety related equipesnt required for (1) the safe shutdown of the facility and (2) the mitigation and control of accident conditions within the facility. The minimum specified -independent and redundant A.C. and 0.C. power sources and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of cegradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation. The OPERASILITY of the power sources are consistent with the initial condition assumptions of the accident analyses anc are based upon maintaining at least Division I or II of the onsite A.C. and 0.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of one of the two onsite A.C. sources. Division III supplies the high pressure core spray (HPCS) system only.

The OPERABILITY of the minimum specified A.C. and 0.C. power sources and associated distribution systems durirg shutdown and refueling ensures that

.(1) the facility can be maintained in the shutdown or refueling condition for extended time periods and (2) sufficient instrumentation and control

! capability is available for monitoring and maintaining the unit status.

The surveillance requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommencations of Regulatory Guide 1.9, " Selection of Ofasel Generator Set Capacity for Standby Power Supplies," March 10, 1971, with the exception noted in Appendix B to the FSAR, and Regulatory Guide 1.108, " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, grer B 3 "^

7ne surveiHance req'uirements for demonstrating the OPERABILITY of the unit batteries are in accordance with the recommendations of Regulatory Guide 1.129, " Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978, and IEEE Std 450-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Station and Substations."

Verifying average electrolyte temperature above the minimum for which the battery was sized, total battery terminal voltage onfloat charge, connection

< resistance values and the performance of battery service and discharge tests

( ensures the effectiveness of the charging system, the ability to handle high discharge rates and compares the battery capacity at that time with the rated capacity.

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  • With the exception of the semi-annual fast start no starting time requirements are required to meet the valid test requirement of

.. .Regulatcry Guide 1.108i 7763N

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