ML20196L318

Proposed Tech Specs SRs 3.8.1.3 & 3.8.1.13 Reducing Loading Requirements for DGs

ML20196L318
Person / Time
Site:	Vogtle
Issue date:	05/18/1999
From:	SOUTHERN NUCLEAR OPERATING CO.
To:
Shared Package
ML20196L313	List: ML20196L311 ML20196L318
References
NUDOCS 9905280127
Download: ML20196L318 (8)

Text

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E closure 3 Vogtle Electric Generating Plant Request to Revise Technical Specifications Diesel Generator Loading Requirements Surveillance Requirements 3.8.1.3 And 3.8.1.13 Marked-un TS and Bases Panes i

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9905280127 990518  !

PDR ADOCK 05000424 p PDR E3-1

AC Sources - Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVElLLANCE FREQUENCY I SR 3.8.1.3 NOTES

1. DG loadings may include gradual loading as recommended by the manufacturer.

2. Momentary transients outside the load range do not invalidate this test.

3. This Surveillance shall be conducted on only one DG at a time.

4. This SR shall be preceded by and immediately follow without shutdown a successful performance of SR 3.8.1.2 or SR 3.8.1.7.

l Verify each DG is synchronized and loaded and 31 days operates for 2 60 minutes at a load 2 4000 kW and s 7000 kW. (6do O

SR 3.8.1.4 Verify each day tank contains 2 650 gal of fuel oil. 31 days 1

SR 3.8.1.5 Check for and remove accumulated water from 31 days l each day tank.

SR 3.8.1.6 Verify the fuel oil transfer system operates to 31 days automatically transfer fuel oil from storage tanks to the day tank.

(continued)

O Vogtle Units 1 and 2 3.8.1-8 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

- I AC Soure:s - Op: rating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.12 NOTE This Surveillance shall not be performed in MODE 1 or 2. However, credit may be taken for unplanned events that satisfy this SR.

Verify each DG's automatic trips are bypassed on 18 months actual or simulated loss of voltage signal on the emergency bus concurrent with an actual or simulated ESF actuation signal.except:

a. Engine overspeed;

b. Generator differential current; and

c. Low lube oil pressure;

~ SR 3.8.1.13 NOTES

1. Momentary transients outside the kW and kVAR load ranges do not invalidate this test.

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

Verify each DG operates for 2 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> while 18 months maintaining voltage s 4330 V: gg

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 kW W e5500ddW and operating as close as practicable to kVAR; and

b. For the remaining hours of the test loaded 2 kW and s 7000 kW and operating a ose as practicable to 3390 kVAR.

500 (continued)

Vogtie Units 1 and 2 3.8.1-13 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

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• I AC Sources - Operating B 3.8.1 BASES SURVEILLANCE SR 3.8.1.12 (continued)

REQUIREMENTS

2. Post Corrective maintenance testing that requires performance of this Surveillance in order to restore the component to OPERABLE, provided the maintenance was required, or performed in conjunction with maintenance required to maintain OPERABILITY or reliability.

SR 3.8.1.13 NdIDIb5

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/M jg ggp -- --- '" -- ~ that the DGs can start and run c"ontinuouslyati::::.- f an interval of not less than gg M'M _i.:..i or 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, a 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 a load equivalent to444Wof the L hl05h

. . ::: f 2; ._1.. and the remainder of the time at a load

' Of[#CMd/41 ) ec uivalent to then.fl.1:r ff; "' ; of the DG. The DG starts for f In s survemance can be performed either from standby or hot rg gjp p qr 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 e.ygected ,

appiicabie to this SR.

J e M40 in order to ensun ha(oSee t the DG is tested under load conditbns that are as close to desigl i basis conditions as possible, testing mi et be performed using - i kVAR load as close as practicable to6 Ie6kVAR while loaded 2 M DDkW and I i ""* "' --f f 7::: :'?' f;.- ?.: : .. :./. , ' ... c/ the4estrwWir maintaining voltage s 4330 V. This kVAR load is chosen to be representative of the actual design basis inductive loading that the DG would experience. The voltage limit of 4330 V is required to prevent operation of any loads at or above the maximum design voltage. The ,

load band is provided to avoid routine overloading of the DG. Routine  !

overloading may result in more frequent teardown inspections in l accordance with vendor recommendations in order to maintain DG l OPERABILITY.

The 18 month Frequency is consistent with the recommendations of Regulatory Guide 1.108 (Ref. 9), paragraph 2.a.(3), takes into

- consideration unit conditions required to perform the Surveillance, and is intended to be consistent with expected fuel cycle lengths.

(continued)

Vogtle Units 1 and 2 B 3.8.1-31 Revision No. 0

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'. E: closure 4 Vogtle Electric Generating Plant Request to Revise Technical Specifications Diesel Generator Leading Requirements Surveillance Requirements 3.8.1.3 And 3.8.1.13 Clean-Tyned TS and Bases Paees E4-1

i AC Sources - Opercting 3.8.1 SURVEILL'.ANCE REQUIREMENTS (continued) J SURVEILLANCE FREQUENCY SR 3.8.1.3 -

NOTES - --

1. DG loadings may include gradual loading as recommended by the manufacturer.

2. Momentary transients outside the load range do not invalidate this test.

3. This Surveillance shall be conducted on only one DG at a time.

i

4. This SR shall be preceded by and immediately follow without shutdown a

.l successful performance of SR 3.8.1.2 or SR 3.8.1.7.

Verify each DG is synchronized and loaded and 31 days operates for 2 60 minutes at a load 2 6500 kW l and s; 7000 kW.

SR 3.8.1.4 Verify each day tank contains 2 650 gal of fuel oil. 31 days ,

1 SR 3.8.1.5 Check for and remove accumulated water from 31 days each day tank.

SR 3.8.1.6 Verify the fuel oil transfer system operates to 31 days automatically transfer fuel oil from storage tanks j to the day tank. j (continued)  ;

l I

Vogtle Units 1 and 2 3.8.1-8 Amendment No. (Unit 1)

Amendment No. (Unit 2)  !

4 AC Sources - Operating

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3.8.1

' SURVEILCANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.12 NOTE-- --

This Surveillance shall not be performed in MODE 1 or 2. However, credit may be taken for unplanned events that satisfy this SR.

Verify each DG's automatic trips are bypassed on 18 months {

actual or simulated loss of voltage signal on the emergency bus concurrent with an actual or simulated ESF actuation signal except:

a. Engine overspeed;

b. Generator differential current; and l

c. Low lube oil pressure;

. SR 3.8.1.13 - NOTES - -

1. Momentary transients outside the kW and kVAR load ranges do not invalidate this test.

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

Verify each DG operates for 2 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> while 18 months maintaining voltage s 4330 V:

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 6900 kW and operating as close as practicable to 3390 kVAR; and .

b. For the remaining hours of the test loaded 2 6500 kW and s 7000 kW and operating l

as close as practicable to 3390 kVAR.

l (continued) ,

l Vogtle Units 1 and 2 ~ 3.8.1-13 Amendment No. (Unit 1) l Amendment No. (Unit 2) ]

4-  !

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$ AC Sourc:s- Operating B 3.8.1 BASES SURVEILLANCE SR 3.8.1.12 (continued)

REQUIREMENTS I

2. Post Corrective maintenance testing that requires performance of this Surveillance in order to restore the component to OPERABLE, provided the maintenance was required, or j performed in conjunction with maintenance required to maintain j OPERABILITY or reliability.

I SR 3.8.1.13 This Surveillance Requirement demonstrates that the DGs can start and run continuously at loads in excess of the maximum expected ,

loading 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 />,2 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of which is J at a load equivalent to 2105% of the maximum expected loading and 1 the remainder of the time at a load equivalent to the maximum expected loading 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  !

gradualloading, 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 i as close to design basis conditions as possible, testing must be performed using a kVAR load as close as practicable to 3390 kVAR while loaded 2 6500 kW and maintaining voltage s 4330 V. This kVAR load is chosen to be representative of the actual design basis inductive loading that the DG would experience. The voltage limit of 4330 V is required to prevent operation of any loads at or above the maximum design voltage. The load band is provided to avoid routine 1 overloading of the DG. Routine overloading may result in more i frequent teardown inspections in accordance with vendor j recommendations in order to maintain DG OPERABILITY.

The 18 month Frequency is consistent with the recommendations of ,

Regulatory Guide 1.108 (Ref. 9), paragraph 2.a.(3), takes into consideration unit conditions required to perform the Surveillance, and is intended to be consistent with expected fuel cycle lengths. )

l l

l (continued)

Vogtle Units 1 and 2 B 3.8.1-31 Revision No.