ML20073P646

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Proposed Tech Specs Re Change to Tech Spec 4.8.1.1 to Adjust Starting Time for HPCS DG to 13
ML20073P646
Person / Time
Site: River Bend Entergy icon.png
Issue date: 05/14/1991
From:
GULF STATES UTILITIES CO.
To:
Shared Package
ML20073P645 List:
References
NUDOCS 9105220159
Download: ML20073P646 (4)
v • d • e


Text

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Enc.ieo re. l ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS

4. 3.1.1.1 Each of the above required inceoendent circuits between the offsite transmission network and the onsite Class 1E distribution system shall be:

a.

At least once per 7 days, determined OPERABLE by verifying correct breaker alignments and indicated power availability, and b.

At least once per 18 months, demonstrated OPERABLE, during shutdown, by manually transferring unit power supply from the normal circuit to the alternate circuit.

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

a. In accordance with the frequency specified in Table 4.8.1.1.2-1 on a STAGGERED TEST 8 ASIS 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. a) For diesel generators 1A and 18, verifying the diesel starts ** from ambient condition and accelerates to at least 450 rpm in less than or ecual to 10 seconds. The generator voltage and frequency shall be 4160'2 420 volts ano 60 2 1.2 Hz within 10 seconds after the start signal.

b) For diesel generator IC, verifying the diesel starts ** from amoient condition and accelerates to at least 882 rpm in less than or equal to 10 seconds. The generator voltage and frequency shall not exceed a maximum of 5400 volts and 66.75 Hz and shall be g*e**-- then 27?O v;1t: :n; CO,2 4:=

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within 10 se;;nd: 2ad 4160 1 420 volts and 60 2 1.2 Hz within 13 seconds.

5. Verifying the diesel generator is synchronized, loaded to 3000-3100 kw*** for diesel generators 1A and 18 and 2500-2600 kw***

for diesel generator 1C in less than or equal to 60 seconos**,

and operates with this load for at least 60 minutes.

    • All diesel generator starts for the purpose of this survei? lance test may be preceded by an engine prelube period. Further, all surveillance tests, with the exception of once per 184 days, may also be preceded by warmup procedures and may also include gradual loading (> 150 see) as recommended by the manufacturer so that the mechanical stress and wear on the diesel engine is minimized.
      • Momentary transients due to changing bus loads shall not invalidate the test.

RIVER BEND - UNIT 1 3/4 8-4 9105220159 910514 *

  • PDR ADOCK 05000450 .

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RECElvgo ELECTRICAL POWER SYSTDtS SURVEILLANCE REQUIREMD(TS (Continued) I b%

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2) boc Verifying the diesel generator starts ** on the auto start signal, energizes the energency busses with pensanently connected loads within 10 seconds, energizes the auto-connected loads through the sequencino logic, and oper-atos for greater than or equal to 5 minutes while its generator is loaded with the loads. After energization, the steady-state voltage and frequency of the energency busses shall be maintained at 4160 1 420 volts and 60 1 1.2 Hz during this test, b) For division III:

1 Verifying de-energization of the emergncy bus.

7 Verifying the dtasel generator starts on the auto-start signal, enargizes the emergency bus with the oarsanently connected loads within,3FmE5nds, energizes the auto- Ql connected Irads through the sequence logic, and oper-

, atos for grtater than or equal to 5 minutes while its generator is loaded with the loads. After energiza-tion, the stesdy-state voltage and frequency of the escrgency bus shall be maintained at 4160 t 420 volts and 60

  • 1.2 dz during this test.

c) Operating ** with the diesel generetor loaded to 3000-3100 kWa** for diese! generators 1A and 18 and 2500-2600 kWa**

for dies'.. mner. tor 1C for at least 60 minutes or until operati g

  • w , atures have stabilized. Within 5 minutes after Requh:er &g4.tthis ent test,)perfore

.1.1.2.f.4.a 2) andSurveillance b)2).

5. Verifying Ar, ua v ECCS actuation test signal without loss of offsite yver, tu diesel generator starts on the auto-start signal and c.wrates i standby for greater than or equal to 5 minutes, t%r dittel generator IA and 18, the generator volt-age and frequeny 4 hall be 4160 t 420 volts and 60 2 1.2 Hz within 10 seconds after the auto-start signal. For diesel generator IC, the generator voltage and frequency shall not exceed a maximum of 5400 volts and 66.75 Hz and shall be n etter 4 hen-C?M M!ts * ** * ": A t w 10 S M W 4160 t I20 volts and 60
  • 1 2 Mz within 13 seconds. The steady-state generator voltage and frequency sh411 be maintained within these limits during this test.
6. $1mulating a loss of offsite power in conjunction with an ECCS actuation test signal and: '

a) For divisions I and II:

1) Verifying deenergization of the emergency busses and load shedding from the emergency busses. '
    • All diesel generator starts for the purpose of this surveillance test may be preceded by an engine prelube period. Further, all surveillance tests, with the exception of once per 184 days, may also be and aay also include gradual loading (> 150 sec) preceded by as recommended by warsup the manu-procedures facturer so that the mechanical stress and wear on the diesel engine is minimized.
      • Momentary transients due to changing bus loads shall not invalidate the test.

l RIVER BEND - UNIT 1 3/4 8-7 Amendment No. 9, 43

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t ELECTRICAL P0hTR SYSTEMS SURVE!LLANCE REQUIREHENTS (Continued)

After energitation, the steady-state voltage and frequency of the emergency busses shall be maintained RECElyED at 4160 1 420 volts and 60 1 1.2 Mz during this test.

  • b For div'ston !!!:

JUL1i N ) 1)

Verifying de energization of the emergency bus.

SDC 2) werifying the diesel generator starts ** on the auto-start signal, energizes the emergency. bus with ita -

permanently connected loads within Wseconds, ener j 3 l gizes the auto connected loads through the sequencing lo0*c, end c3erates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads. After energitation, the steady-state voltage and frequency of the emergency bus shall be maintained at 4160 1 420 volts and 60 t 1.2 Hz during this test.

7.

Verifying that, upon an ECCS actuation signal, all automatic diesel generator trips are automatically bypassed except engine overspeed and generator differential current.

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 />.

Diesel generators 1A and 18 shall be loaded to 3030-3130 kw"**

for the duration of the test. Diesel generator IC shall be loaded to to 2750-2850 kw"** 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 the test 2500-2600 and kw*** for the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of the test. For diesel generator 1A and 15, the generator voltage and frequency shallstart the be 4160 signal.1 420 volts and 60 1 1.2 H1 within 10 seconds after and frequ9ncy shall not exceed a maximum of 5400 volts andFor 66.75 H: and shall. be gr;;ter ther. GG vain ud " * "- ""*

10 ::::= ei.e 41601420 voltsand6011.2Htwithin13 seconds.l The steady-state generator voltage and frequency shall be main-tained within these limits during this test.

9.

Verifying that the auto-connected loads to each diesel generator do not exceed 3130 kw for diesel generator 1A and 18 and 2600 kw for diesel generator IC.

    • All diesel generator starts for the purpose of tMs surveillance test may be preceded by an er.gine prelube period. Furthar, all surveillance tests, with the exception of once per 184 days, may also be preceded by warsup procedures and may also include gradual loading (> 150 sec) as recommended by the manufac-turer so that the mechanical stress and wear on the diesel engine is minimized.
      • Momentary transients due to changing bus loads shall not invalidate the test.

RIVER BEND - UNIT 1 3/4 B-8 Amendment No. 9,43

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ELECTRICAL POWER $Y$TEMS SURVEILLANCE REQUIREMENTS (Continued)

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At50'F.

< least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> with the last reported room temperatur l

h.

At least once per 10 years, or after acy modificati generators sinvitaneously, during shutdown, and verifying that all three diesel generators accelerate to at least 450 rpe for diesel generetnrs 2A 4?d 12 and 906-rpe for diess) canarator 1C in less than or equal to 10 seconds.L-- %2.

1. I At least once per.10 years by:

1.

Draining each fuel oil storage Link, removing the accumulated sediment, and equivalent cleaning solution, and the tank using a sodium hypochlorite or

2. Perforetog a pressure test of those oil systes designed to Section III, portions of the diesel fuel subsection N0 of the ASME Code, in accordance with ASME Code Section XI Article IWD-5000.
4. 8.1.1. 3 Reports - A11 diesel generator failures, valid or non-valid, shall be reported to the Commission, pursuant to Specification 6.9.2, within 30 da Reports of diesel generator failures shall include the information recommended .

in Regulatory Position C.J.b of Regulatory Guide 1.108 Revision 1 If the number of failures in the last 100 valid tests, on a per nuc. August lear unit 1977.

basis, is greater than or equal to 7, the report shall be supplemented to inc'"de Guide 1.108, Revision 1 August 1977.the additional information recommen i

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RIVER BEND - UNIT 1 3/4 8-10 '

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