ML17277B751

Proposed Tech Specs Changing Min Allowable Voltage Band on Auto Starting of Diesel Generators DG-1 & DG-2,making Band Consistent W/Output Breaker Closure Permissive Setpoint

ML17277B751
Person / Time
Site:	Columbia
Issue date:	05/22/1985
From:	WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:
Shared Package
ML17277B750	List: ML17277B749 ML17277B751
References
TAC-59031, NUDOCS 8505290490
Download: ML17277B751 (5)

Text

ELECTRICAl POMER SYSTEMS SURVEILLANCE RE UIREHENTS 4.8.1.1.1 Each of the above required independent circuits between the offsite transmiss ion network 'and the onsite Class IE distribution system shall be:

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 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: 4

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

I. 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 s+rts and transfers fuel from the storage system to the day fue tank,

a. Verifying the diese'I starts fpo$ ~eobient condition and accelerates to at least 900 rpm~(60 Hz) in less than or equal to 10 seconds" for OG-1 and+DG-2 and 13 seconds" for OG-3. The generator voltage and frequency shall be 4160 vo ~s an 60 + 3.0 Hz within 10 seconds" for OG-1 and OG-2 an 13 seconds" for DG-3 after the start<signal. The diesel generator sha be started for this teste%i using one of the fo11owing signals:

1

'.. ~ y~

b) Simulated I'oss=bf-offsite power by itself.

c) Simulated ~l'ds's-of-offsite power in conjunction with an ESF actuation+st signa'I.

d) An ESF actuation test signal by itself.

5. Verifying the diesel generator is synchronized, loaded to greater than or equal to 4400 kM for OG-I and OG-2 and 2600 kM for OG-3 in less than or equal to 60 seconds", and operates with these loads 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 230 psig for OG-1 and OG-2 and 200 psig for OG-3.

b. At least once per 31 days and after each operation of the diesel where the period of ooeration 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.

"These diesel generator starts froi-, ambient conditions shall be performed at leas. once per 184 days in these surveillance tests and all other engine star s for the purpose oi his surveillance testing shall be preceded by an engine pr elube oeriod and/or other warmup pr ocedures recommended by the manu-facturer so that mechanical stress and ~ear on he diesel engine is minimized.

MASHrNGTON NUCLEAR " UNIT 2 .. 3/4 8-3 r.menlient 4 8505290490 850522 ADOCn 05000S97~

PDR

ELECTRICAL POMER SYSTEMS SURVEILLANCE RE UIREHENTS Continued

4. Simulating a loss-of-offsite power by itself, and:

a) For divisions 1 and 2:

1) Verifying deenergization of the emergency busses and load shedding from the emergency busses.

2) Verifying the diesel generator starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 10 seconds, energizes the autoconnected 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, the steady tate voltage and frequency of the emergency busses b) For 1)

~

divi ll Veri f

':be maintained at 4160 ~ 420 volts and 60 z during this test.

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deenergization of the emergency bus.

t

2) Verifyin ~~diesel generator starts on the auto-start signal, en zes the emergency bus with the perma-nently connected loads within 13 seconds and operates for greater tha r equal to 5 minutes while its generator is lo with the shutdown loads. After energization, th ady"state voltage and frequency of the emergency 420 volts and 60 +

b ~all be maintained at 4160 +

WO 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 equal to 5 minutes.

Qtf volts The generator voltage and frequency shall be 4160 +

and 60 a 3.0 Hz within 10 seconds after the auto-

"~

ar signa ; e s ea y-state generator voltage and frequency 0ov 'D<l-l awd DCq-2> 4 lloo ~ 4zo v01% ~h bb~'5.0 0+

Ov4 4l4 e+4ZO VoAa 6. Simulating a loss-of-offsite power in conjunction with an ECCS actuation test signal, and:

0 ~ 40~OAZ4r DCq-~ a) For divisions 1 and 2:

1) Verifying deenergization of the emergency busses and loads shedding from the emergency busses.

2) Verifying the diesel generator starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 10 seconds, energizes the auto-connected loads through the load sequencer and operates WASHINGTON NUCLEAR - UNIT 2 3/4 8-5

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SI, ~

vs sss w ~ SWsev S

ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS Continued 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 + 3.0 Hz during this test.

b) For division 3:

1) Verifying deenergization of the emergency bus.

2) Verifying the diesel generator starts on the auto-start signal, energizes the emergency bus with the permanently connected loads and t auto-connected emergency loads within 30 seconds a 'ates for greater than or equal to 5 minutes e its generator is loaded with the emergency lo ~ After energization, the steady state voltage and equency of the emergency bus shall be maintained t 4160 + 420 volts and 60 + 3. 0 Hz during this

7. Verifying that all ~atic diesel generator trips are automatically bypa upon loss of voltage on the emergency bus concurrent w+ n ECCS actuation signal except:

a) For divi 1 and 2, engine overspeed and generator differ 1 current, incomplete starting sequence and emerge manual stop.

b) For division 3, engine overspeed, generator differential current and emergency manual stop.

8. Verifying 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 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 greater than or equal to 4650 kW for OG-1 and OG"2 and 2850 kW for DG-3. 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 4400 kW +- ~

for DG-1 and OG-2 and 2600 kW fo DG-3. The enerator voltage 250 and frequency shall be 4160 vo s and x 3.0 Hz wit in 10 seconds for DG-1 and DG-2 and 13 seconds for OG-3 after the art signa ; the steady-state generator voltage and frequency Oltoo+4ZO VO'lb md shall be maintained within~4hese-Sion~ during this test.

f <+.O Q~ Nlhhi< 4iho+ 4@0 VOHa O d k 043 O Sa Within 5 minutes after completing this 24-hour test, perform Surveillance Requirement 4. 8. 1. l. 2. e. 4. a)2) and b)2). "

"If Surveillance Requirements 4. 8. 1. l. 2. e. 4. a)2) and/or b)2) are not satis-factorily completed, it is not necessary to repeat the preceding 24-hour test. Instead, the diesel generator may be operated at 4400 kW for OG-1 or OG-2 or 2600 kW for OG-3 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 temperature has stabilized.

WASHINGTON NUCLEAR - UNIT 2 3/4 8"6

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