ML20133G910

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Proposed Tech Specs 3.8.1.14 & 3.8.1.15, AC Sources - Operating, Surveillance Requirements
ML20133G910
Person / Time
Site: San Onofre Southern California Edison icon.png
Issue date: 01/14/1997
From:
SOUTHERN CALIFORNIA EDISON CO.
To:
Shared Package
ML20133G895 List:
References
NUDOCS 9701160214
Download: ML20133G910 (10)
v • d • e


Text

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NPF-10/15-476 1

1 L

ATTACNNENT "A" (ExistingSpecifications)

Unit 3 9701160214 970114 PDR ADOCK 05000361 P

PDR

AC Sources-Operating 3.8.1 SURVEILLANCE REOUIRENENTS (continued)

SURVEILLANCE FREQUENCY, SR 3.8.1.14

NOTES-------------------

{

1.

Momentary transients outside the load and power factor ranges do not invalidate this test.

2.

Credit may be taken for unplanned events that satisfy this SR.

==___

Verify each DG, when operating with the 24 months maximum kVAR lotding permitted during testing, operates for 2 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s:

a.

For 2 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded 2 4935 kW and s 5170 kW; and b.

For the remaining hours of the test loaded 2 4450 kW and s 4700 kW.

]

I SR 3.8.1.15

NOTES-------------------

1.

This Surveillance shall be performed within 5 minutes of shutting down the DG after the DG has operated 2 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded 2 4450 kW and s 4700 kW.

Momentary transients outside of load range do not invalidate this test.

2.

All DG starts may be preceded by an engine prelube period.

__=___

Verify each DG starts and achieves, in 24 months s 10 seconds, voltage 2 3924 V and 5 4796 V, and frequency 2 58.8 Hz and s 61.2 Hz; and operates 2 5 minutes.

(continued)

SAN ON0FRE--UNIT 3 3.8-11 Amendment No. 116

d AC Sources-Operating B 3.8.1 BASES SURVEILLANCE ~

SR 3.8.1.13 (continued)

REQUIREMENTS The SR is modified by a Note which acknowledges that credit i

may be taken for unplanned events that satisfy this SR.

i SR 3.8.1.14 1

Regulatory Guide 1.9 (Ref. 3), requires demonstration once j

per refueling outage that the DGs can start and run continuously at full load capability for an interval of not less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, it 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of which is at load equivalent to 105% to 110% of the continuous duty rating and the e

remainder of the time at a load equivalent to 90% to 100% of the continuous duty rating of the DG. The DG starts for this Surveillance can be performed either from standby or hot conditions. The provisions for prelubricating and warmup, discussed in SR 3.8.1.2, and for gradual loading, discussed in SR 3.8.1.3, are applicable to this SR.

1 In order to ensure that the DG is tested under load conditions that are as close to design conditions as possible, testing is performed using the maximum kVAR loading permitted during testing. This loading represents the inductive loading that the DG would experience and is consistent with Regulatory Guide 1.9 (Ref. 3). The load band is provided to avoid routine overloading of the DG.

routine overloading may result in more frequent teardown inspections in accordance with vendor recommendations in j

order to maintain DG OPERABILITY.

The 24 month Frequency is consistent with the recommendations of Regulatory Guide 1.9, (Ref. 3), takes into consideration unit conditions required to perform the Surveillance, and is intended to be consistent with expected fuel cycle lengths.

This Surveillance is modified by two Notes.

Note I states that momentary transients due to changing bus loads do not invalidate this test. Similarly, momentary power factor transients above the power factor limit will not invalidate the test. Note 2 acknowledges that credit may be taken for unplanned events that satisfy this SR, (continued)

SAN ONOFRE--UNIT 3 8 3.8-23 Amendment No. 116

W o

.y AC Sources-Operating

]

B 3.8.1 i

BASES.

1 l

SURVEILLANCE SR 3.8.1.15 REQUIREMENTS i

(continued)

This Surveillance demonstrates that the diesel engine can restart from a hot condition, such as subsequent to shutdown 1

from normal Surveillances, and achieve the required voltage and frequency within 10 seconds. The 10 second time is i

derived from the requirements of the accident analysis to respond to a design basis large break LOCA. The 24 month i

Frequency is consistent with the recommendations of Regulatory Guide 1.9 (Ref. 3) and is intended to be consistent with expected fuel cycle lengths.

This SR is modified by two Notes. Note 1 ensures that the test is performed with the diesel sufficiently hot. The i

load band is provided to avoid routine overloading of the l

i DG.

Routine overloads may result in more frequent teardown inspections in accordance with vendor recommendations in order to maintain DG OPERABILITY. The requirement that the l

t diesal has operated for at least 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> at full load conditions prior to performance of this Surveillance is based on manufacturer recommendations for achieving hot conditions. Momentary transients due to changing bus loads do not invalidate this test. Note 2 allows all DG starts to l

i be preceded by an engine prelube period to minimize wear and j

tear on the diesel during testing.

i SR 3.8.1.16 i

As required by Regulatory Guide 1.9 (Ref. 3), this Surveillance ensures synchronization and automatic load j

transfer from the DG to the offsite source can be made and that the DG can be returned to ready to load status when j

offsite power is restored.

It also ensures that the auto-start logic is reset to allow the DG to reload if a subsequent loss of offsite power occurs. The DG is 4

considered to be in ready to load status when the DG is at rated speed and voltage, the output breaker is open and can I

receive an autoclose signal on bus undervoltage, and the load sequence timers are reset.

The frequency of 24 months is consistent with the recommendations of Regulatory Guide 1.9 (Ref. 3), takes into consideration unit conditions required to perform the (continued)

SAN ONOFRE--UNIT 3 B 3.8-24 Amendment No. 116 1

NPF-10/15-476 i

l ATTACHMENT "B"

)

(ProposedSpecifications)

Unit 3

AC Sources-Operating 3.8.1 4

i SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY I

I

[1.------------------NOTES-------------D SR 3.8.1.14 Momentary transients outside the load and power factor ranges do not invalidate this test.

2.

Credit may be taken for unplanned events that satisfy this SR.

Verify each DG, when operating with the 24 months maximum kVAR loading permitted during testing, operates for 2 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s:

a.

For 2 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded 2 4935 kW and s 5170 kW; and b.

For the remaining hours of the test loaded 2 4450 kW and s 4700 kW.

J SR 3.8.1.15

NOTES------

M 1.

This Surveillance shall be performed within 5 minutes of shutting down the DG after the DG has operated 2 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> g

loaded 2 4450 kW and s 4700 kW.

Momentary transients outside of load range do not invalidate this test.

2.

All DG starts may be preceded by an engine prelube period.

Verify each DG starts and achieves, in 24 months s 10 seconds, voltage 2 3924 V and s 4796 V, and frequency 2 58.8 Hz and Q61.2Hz;andoperates25 minutes.

(continued) t SAN ONOFRE--UNIT 2 3.8-11 Amendment No. 127

_ _ ~..

1 Doc,ument. Control Desk AC Sources - Operating 3.8-11 9'This SR is not applicable until the next test scheduled to occur during the Unit 3 Cycle 9 refueling outage. Until that time the following SR is applicable:

l Verify the diesel 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 l

hours of this test, the diesel generator shall be loaded to greater than or equal to 5170 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 greater than or equal to 4700 kw.

The generator voltage and frequency shall be 4360

  • 436 volts and 60
  • 1.2 Hz after the start
  • signal; the steady state generator voltage and frequency shall be maintained at 4360
  • 436 volts and 60 + 1.2 / -0.3 Hz for 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 and 4360
  • 436 volts and 60
  • 1.2 Hz 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 engine start for the purpose of this surveillance test may be preceded by an engine prelube period and/or other warmup procedures recommended by the manufacturer'so that mechanical stress and wear on the engine is minimized.
  1. This SR is not applicable until the next test scheduled to occur during the Unit 3 Cycle 9 Refueling Outage. Until that time the following SR is applicable:

Within 5 minutes after completing the 24-hour test, simulate a loss of offsite power by itself, and verify the diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 10 seconds and operates for greater than or equal to 5 minutes while its generator is loaded with the permanently connected loads. After energization, the steady state voltage and frequency of the emergency busses shall be maintained at 4360 1 436 volts and 60 l

i 1.2 Hz during this test.

SAN ON0FRE -- UNIT 3 3.8-11a AMENDMENT N0.

AC Sources-Operating B 3.8.1 BASES 1

l SURVEILLANCE SR 3.8.1.13 (continued)

REQUIREMENTS The SR is modified by a Note which acknowledges that credit may be taken for unplanned events that satisfy this SR.

a i

l SR 3.8.1.14 i

fifegulatory Guide 1.9 (Ref. 3), requires demonstration once i

per refueling outage that the DGs can start and run continuously at full load capability for an interval of not

{

1ess than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, ;t 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of which is at load equivalent to 105% to 110% of the continuous duty rating and the remainder of the time at a load equivalent to 90% to :.00% of who enntininntic da+u

=+4aa nf the DG I The DG starts for this Surveillance 'can be performed either from standby or 1

hot conditions. The provisions for prelubricating and warmup, discussed in SR 3.8.1.2, and for gradual loading, discussed in SR 3.8.1.3, are applicable to this SR.

In order to ensure that the DG is tested under load conditions that are as close to design conditions as possible, testing is performed using the maximum kVAR loading permitted during testing. This loading represents the inductive loading that the DG would exoerien nd Isl ponsistent with Regulatory Guide 1.9 (Net. 3 load 8

band is provided to avoid routine overloadin f the DG.

routine overloading may result-in more frequent teardown inspections in accordance with vendor recommendations in er to maintain DG OPERABILITY.

The 24 month Frequency is consistent with the recommendations of Regulatory Guido 1.9, (Ref. 3), takes into consideration unit conditions required to perform the Surveillance, and is intended to be consistent with expected fuel cycle lengths.

This Surveillance is modified by two Notes.

Note I states that momentary transients due to changing bus loads do not invalidate this test. Similarly, momentary power factor transients above the power factor limit will not invalidate the test. Note 2 acknowledges that credit may be taken for unplanned events that satisfy this SR.

(continued)

SAN ON0FRE--UNIT 3 8 3.8-23 Amendment No. 116

~

1 t,

e AC Sources-0perating B 3.8.1 BASES

$ This provision is not applicable until performance of the new (post-TSIP) SRs in the Unit 3 Cycle 9 outage.

i SAN ONOFRE -- UNIT 3 B 3.8-23a AMENDMENT N0.

ab AC Sources-Operating B 3.8.1 BASES SURVEILLANCE SR 3.8.1.15 REQUIREMENTS l

(continued)

This Surveillance demonstrates that the diesel engine can restart from a hot condition, such as subsequent to shutdown from normal Surveillances, and achieve the required voltage and frequency within 10 seconds. The 10 second time is derived from the requirements of the accident analysis to respond to a design basis large break LOCA. The 24 month Frequency is consistent with the recommendations of Regulatory Guide 1.9 (Ref. 3) and is intended to be consistent with expected fuel cycle lengths.

1 This SR is modified by two Notes. Note 1 ensures that the test is performed with the diesel sufficiently hot.

't=d h v. v. iu=:u i.o avoio rouune um 6dinf of the DG.

Routine overloads may result in more frequelit teardown l

nspections in accordance with vendor reco=nandations in J

er to maintain Oc noroaRitITY.J ine requirement that the diesei nas operated for at leasT2 hours at full load conditions prior to performance of this Surveillance is based on manufacturer recommendations for achieving hot conditions. Momentary transients due to changing bus loads do not invalidate this test. Note 2 allows all DG starts to be preceded by an engine prelube period to minimize wear and tear on the diesel during testing.

SR 3.8.1.16 As required by Regulatory Guide 1.9 (Ref. 3), this Surveillance ensures synchronization and automatic load transfer from the DG to the offsite source can be made and that the DG can be returned to ready to load status when offsite power is restored.

It also ensures that the auto-start logic is reset to allow the DG to reload if a subsequent loss of offsite power occurs. The DG is considered to be in ready to load status when the DG is at rated speed and voltage, the output breaker is open and can receive an autoclose signal on bus undervoltage, and the load sequence timers are reset.

The Frequency of 24 months is consistent with the recommendations of Regulatory Guide 1.9 (Ref. 3), takes into consideration unit conditions required to perform the (continued)

SAN ONOFRE--UNIT 3 8 3.8-24 Amendment No. 116 m

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