ML20055D361
| ML20055D361 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 06/12/1990 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20055D362 | List: |
| References | |
| NUDOCS 9007060229 | |
| Download: ML20055D361 (2) | |
Text
__
(
~
ELECTRICAL POWER SYSTEMS
- SURVEILLANCE REQUIREMENTS (Continued) 2)
Verifying the diesel generator starts ** on the auto-start signal, energizes the emergency busses with perranently connected loods within 10 seconds, energizes the auto-connected loads through the sequencing logic, and oper-ates 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 emergency busses shall be maintained at 4160 1 420 volts and 60 1 1.2 Hz during this test.
b)
For division III:
1)
Verif ing de-energization of the one ncy bus.
2)
Verif ing the diesel generator starts
- on the auto-start signa, energizes the emergency bus with the permanently connected loads within 10 seconds, energizes the auto-connected loads through the sequence logic. and oper-ates for greater than or equal to 5 minutes while its generator is loaded with the loads. ~After energiza-tion, the steady-state voltage and frequency of the emergency bus shall be maintained at 4160 1 420 volts and 60
- 1.2 Hz during this test.
c)
Operating ** with the diesel generator loaded to 3000-3100
-kW*** for-diesel generators 1A and 1B and 2500-2600 kW***
for diesel generator 1C for at least 60 minutes or until operating temperatures have stabilized.- Within 5 minutes after completing this test,) perform Surveillance Requirement =4.8.1.1.2.f.4.a 2) and b)2).
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.1 For diesel generator 1A and 18, the generator volt-age and frequency shall be 4160 1 420 volt: and 60 1 1.2 Hz t
within 10 seconds after the auto-start signal.
For diesel generator 1C the generator voltage and frequency shall not exceedamaxImumof5400 volts-and66.75Hzandshall'begreater than 3740 volts and 58.8 Hz within 10 seconds and 4160 t 420 volts and 60
- 1.2 Hz within 13 seconds. 'The steady-state generator voltage and frequency shall be maintained within' these limits during this test.
6.
Simulating 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 surv'elllance 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-a and may also include gradual loading (> 150 sec) as recommended by the manu-facturer so that the mechanica1' 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 8-7 Amendment No. 9, 43 nR7o'd:B U$jge
~
lf:
^
l; a
3 l ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS'(Continuedi 2)~
Verifying'the diesel generator _ starts ** on the auto-start signal,- onergizes.the emergency busses with permanently connected loads within 10 seconds, ener-gizes the auto-connected loads through the sequencing logic, and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads.
2 J
=
i
- 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 preceded by warmup procedures and may also include gradual. loading (> 150 see) as recommended by the manu-facturer so=that the mechanical stress and wear on the diesel engine is minimized.
. RIVER BEND - UNIT 1 3/4 8-7a Amendment No. 9
-m
...m..
1 4
.j
/
ELECTRICAL' POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)
After energitation, the steady-state voltage.and frequency of the emergency busses shall be maintained
-i at 4160 2 420 volts and 60 1 1.2 Hz during this test.
b)
For division !!!:
1)
Verifying de-energitation of the emergency bus.
3 2)
Verifying the diesel generator starts ** on the auto-start signal, energizes the emergency bus with its permanently connected loads with' n 10 seconds, ener-gizes the auto-connected loads through the sequencing j
logic, and operates for greater than or equal to 5' minutes while its generator is-loaded with the i
emergency loads. After energization, the steady-
=l state voltage and frequency of the emergency bus' shall be maintained at 4160 t 420 volts and 60 t a
l 2 Hz during this test.
7.
Verifying that, upon an ECCS actuation signal, all automatic I
j diesel generator trips are automatically bypassed except engine overspeed and generator differential current.
6.
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 1B shall be loaded to 3030-3130 kw***
for the duration of the test.
Diesel generator IC shall be loaded.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 and
-to 2500-2600 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 1B, the generator voltage and frequency shall be 4160 1 420 volts and'60 1 1.2 Hz.within 10 seconds after the 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 greater than 3740 volts and 58.8 Hz within i
20 seconds and 4160't 420 volts and 60 1 1.2 Hz within 13 seconds, i
The steady-state generator voltage and frequency shall be main-tained within these limits during this test.
1 9.
Verifying that the auto-connected loads to each diesel generator do not exceed 3130-kw for diesel generator 1A and IB and 2600 kw for diesel generator IC.
o
- All diesel-gene *ator 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 preceded by warmup procedures and may also include gradual loading (> 150 see) 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 8-8 Amendment No. 9,43 l
l