ML20154R775
| ML20154R775 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 05/15/1985 |
| From: | Rubenstein L Office of Nuclear Reactor Regulation |
| To: | Crutchfield D, Novak T Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20151K803 | List: |
| References | |
| FOIA-85-511 NUDOCS 8603310181 | |
| Download: ML20154R775 (26) | |
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TABLE 3.3.3-1 (Continued)
EMERGENCY CORE COOLING SYSTEM ACTUATION INSTRUMENTATION MINIMUM OPERABLE APPLICABLE cn E
CHANNELS PER OPERATIONAL TRIP FUNCTION (a) CONDITIONS ACTION TRIP FUNCTION C.
DIVIS' ION 3 TRIP SYSTEM M
1.
HPCS SYSTEM 4(b) 1, 2, 3, 4*, 5*
34 ').
f Reactor Vessel Water Level - Low, Low, Level 2 a.
34 *)
f b.
Drywell Pressure - High 4
1,2,3 1, 2, 3, 4*,'*5*
31 c.
Reactor Vessel Water Level-High, Level 8 2(C) 1, 2, 3, 4*, 5" 35 d.
Condensate Storage Tank Level-Low 2(d)
Suppression Pool Water Level-High 2
1, 2, 3, 4 *, 5*
35 e.
f.
Pump Discharge Pressure-High (Bypass) 1 1,2,3,4*,5*
33 g.
HPCS System Flow Rate-Low (Permissive) 1 1, 2, 3, 4*, 5*
33 h.
Manual Initiation 1
1,2,3,4*,5*
33 MINIMUM APPLICABLE'.
w TOTAL NO.
CHANNELS OPERABLE OPERATIONAL J.
OF CHANNELS TO TRIP CHANNELS CONDITIONS ACTION w
D.
LOSS OF POWER 1.
Division 1 and 2 a.
4.15 kw Standby Bus 3/ bus 2/ bus 3/ bus 1, 2, 3, 4**, 5**
[l Undervoltage (Sustained O
Undervoltage) b.
4.16 kv Standby Bus Under-3/ bus 2/ bus 3/ bus 1, 2, 3, 4**, 5**
38Dl voltage (Degraded Voltage)
M f
2.
Division 3
'n M 4.16 kv M andby Bus Under-4'/ bus 2/ bus 4/ bus 1, 2, 3, 4**, 5**
5 (a.
voltage (Suit.;..f U.Jov.re.3) gamme g
- "*k* s t 9/w*
2/bws h
(6.
4.If, W st.
[jS 8 / bus gy 9 we g a, e,
/
y, See footnotes on next page N
s*
A T b,f 0 g y.d* b b A S m apzw m
J
- 5. A.
=
Y.aBLE 3.3.3-1 (Continued)
EMERGENCY CORE COOLING SYSTEM ACTUATION INSTRUMENTATION ACTION ACTION 30 -
With the nu:r.ber of OPERABLE channels less than required by the
, Minimum OPERABLE Ch'annels per Trip Function requirement:
With one channel inoperable, plac6 the inoperable channel a.
in the tripped condition within one hour
- or declare the associated system inoperable.
b.
With more than one channel inoperable, declare the associated system inoperable.
ACTION 31 -
With the number of OPERABLE channels less than required by the Minimum OPERA 9LE Channels per Trip Function requirement, declare the associated ADS trip system or ECCS inoperable.
With the number of OPERABLE channels less than the Minimum OPERABLE ACTION 32 Channels per Trip Function requirement, place the inoperable channel in the tripped condition within one hour.
ACTION 33 -
With the number of OPERABLE channels less than required by the Minimum OPERABLE Channels per Trip Function requirement, restore the inoperable channel to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or declare the associated ADS valve or ECCS inoperable.
With the number of OPERABLE channels less than required by the
(
ACTION 34 -
Minimum OPERABLE Channels per Trip Function requirement:
For one trip system, place.that trip system in the trip (ed a.
condition within one hour
- or declare the HPCS system inoper-able.
b.
For both trip systems', declare the HPCS system inoperable.
ACTION 35 -
With the number of OPERABLE channels less than required by the Minimum OPERABLE Channels per Trip Function requirement, place at least one inoperable channel in the tripped. condition within one hour
- or declare the HPCS system inoperable.
ACTION 36'-
With the number of OPERABLE channelhess than tfje Total-Number \\
d of Channels /;4ectarrthrassociateremergerry'dlesel generator Y-in~operaDti an' take the ACTION required by Specification 3.8.1.1j
(
N4 or 3.8.1.2, a propriate.
PER&annets-oneQtha}MtaL g
w umher of ACTION N -
With the Channels J tace the inoperable Ehannel in the tripped tinue until AT' Mumbe (EinditTo'7 ftnTni ho u r*. fop eFatibii~iiaD fW
' Mrf5runeNthrnex1rfequi' red CHANNEf.'. n conFUNCTIONA a
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RIVER BEND - UNIT 1 3/4 3-35 AP9 2 6 25
%s TABLE 3.3.3-2 (Continued)
EMERGENCY CORE COOLING SYSTEM ACTUATION INSTRUMENTATION SETPOINTS
- 5 ALLOWABLE
{
TRIP FUNCTION TRIP SETPOINT VALUE C.
DIVISION 3 TRIP SYSTEM c
1.
RPCS SYSTEM zQ
'a. Reactor Vessel Water Level - (Low trm,
->-45.5 inches *
->-47.7 inches j
e Level 2)
~~
b.
Drywell Pressure - High 5 1.68 psig i 1.88 psig,
c.
Reactor Vessel Water Level - High, Level 8 5 52 inches *
$ 54.2 inches lr d.
Condensate Storage Tank Level - tow 1 24 inches **
1 19 inches **
l e.
Suppression Pool Water Level - High i 16 inches #
$ 16.9 inches #
u l.I f.
Pump Olscharge Pressure - High 1 120 psig increasing 5 145 ps10 increasing g.
HPCS System Flow Rate - Low 5 500 gpa 3 625 gpa 4
h.
Manual Initiation NA NA 4
D.
LOSS OF POWER I
1.
Division 1 and 2 y
M a.
4.16 kv Emergency Bus Urdervoltage-a.
4.16 kV Basis -
(Sustained Undervoltage)##
2970 volts 2970 1 148 volts l
b.
$ 3 sec. time 1 310.055 sec. time delay delay _
11%, 4.16 kw BastD sigrivo b.
4.16 kw Emergency Bus Undervoltage a.
3746-vol ts W40lle7 volts l
(Degraded Voltage) b.
1 60 sec. 6010.055 sec. time delay time delay (w/o 310.055 sec. time delay 1~My S
3 sec. time "T1 4 AfM'; M.
delay (w LOCA) l8"une 5
5 P==
=
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e TABLE 3.3.3-2 (Continued)
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=2 EMERGENCY CORE COOLING SYSTEM ACTUATION INSTRUMENTATION SETPOINTS
'w" ALLOWABLE en g
TRIP FUNCTION
.. TRIP SETPOINT VALUE D.
LOSS 4F POWER (continued)
C t
55 2.
Division 3 a.
4.16 kw Standby Bus Undervoltage a.
4.16 kw Basis -
(Suif.*asj U.Jecntf.3.)
>30451 volts 3045151 volts l
b.
120 v Basis -
>87 volts 8712 volts 1
c.
2 3 sec. time delay 310.055 sec. time delay 8e Merwffese
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- b. V.lf, W Sr.Jb3
(
(Deg,.).]If,lt.ge) 3199 wits
$144f 9a wits, "See Bases Figure B 3/4 3-1.
R
- (Bottom of CST is at EL 95't."
The levels are measured on the instrument zero level of EL SB'6."
- (Bottom of suppression pool is at EL 70'.)
The levels e measured from the instrument zero level of
't' EL 89'9."
- These are inverse time delay voltage relays or instan aneous voltage relays with a time delay. The voltages shown are the maximum that will not result,n a trip.
Lower voltage conditions will result l
in decreased trip times.
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TABLE 4.3.3.1_1,(Continued) y EMERGENCY CORE COOLING SYSTEM ACTUATION INSTRUMENTATION SURVEILLANCE REQUIREMENTS E
CilANNEL OPERATIONAL' as CHANNEL FUNCTIONAL CHANNEL CONDITIONS FOR WHICH Q
TRIP FUNCTION CHECK TEST CALIBRATION SURVEILLANCE REQUIRED 5
C.
DIVli10N 3 TRIP SYSTEM Cy 1.
HPCS SYSTEM
- i e
a.
R,))
1, 2, 3, 4 *, 5*
g Low Low, Level 2 S
M b.
Drywell Pratssure-High 5
M g
R, 1, 2, 3 1
c.
Reactor Vessel Water Level-High,.
J R,)
1, 2, 3, 4*, 5*
g Level 8 S
M d.
Condensate Storage Tank Level -
R,)
1,2,3,4*,5*
g Low 5
M e.
Suppression Pool Water R,)
g
't, 4*, 5*
Level - High S
M R *I 1, 2,*3, 4*, 5*
I t'
f.
Pump Discharge Pressure-High 5
M 1, 2,'
R 'I 1, 2, 3, 4", 5*
I g.
HPCS System Flow Rate-Low S
M Y
h.
Manual Initiation NA M(b)
NA 1,2,3,4*,5*
'd D.
LOSS OF POWER l
1.
Division 1 and 2 I
a.
4.16 kv Standby Bus Under-M 2"
R.
1, 2, 3, 4**, 5**
l
}
voltage (Sustained Under-voltage) b.
4.16 kv Standby Bus Under-M ler" R
1, 2, 3, 4"*, 5** l voltage (Degraded Voltage)
"FI 2.
Division 3 S
H I
i a.
4.16 kv Standby Bus Under-M M
()"
R 1, 2, 3, 4 * *, 5 * * "'M l ;
voltage (Sar.r../ u.J....rtge) j Not required to be OPERABLE when reactor steam done pressure is less than or equal to 100 psig.
When the system is required to be OPERABLE per Specification 3.5.2.
Required when ESF equipment is required to be OPERABLE.
- j w
(a) Calibrate trip unit setpoint at'least once per 31 days.
p y
a.
g (b) All circuitry associated with manual initiation other that ma 4ual initiation switches shall receive g
[
m a CHANNEL FUNCTIONAL TEST at least once per 31 days as a art of circuitry required to be tested i
t l
for automatic system actuation. Manual initiation switch < s shall be tested at least once per
'O l
l 18 months during shutdown.
. )
( 6. *f.14 kV st.aI% aas U.Jer.
S H
R t, A, 3, 't * *,' C **
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i ELECTRICAL POWER SYSTEMS
. LIMITING CONDITION FOR OPERATION (Continued)
,A_CTION (Continued)..
With diesel generator IC of the above required A.C. electrical power c.
ssources inoperable, demonstrate the OP(.gABILITY of the remaining A C sources by performing Surveillance Requirements 4.8.1.1.1.a and i
4.8.1.1.2.a.4 within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereaf restore the inoperable diesel generator 1C to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or declare the HPCS system inoperable and take the ACTION required by Specification 3.5.1.
er lC.
d.
With diesel generator IA ar 18
- e power sources inoperable,16 a/of the above required A.
electrical I
ddition to ACTION a er verify within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> that all required systems, sub, systems, trains, s applicable, t
components and devices that depend on the remaining OPERABLE diesel generator as a source of emergency power are also OPERABLE, and the C standby service water pump OPERABLE if diesel generator 18 is i operable; otherwise, be in at least HOT SHUTDOWN within the ne 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
With two of the above required offsite circuits inoperable, demon-e.
strate the OPERABILITY of three diesel generators by performing Surveillance Requirement 4.8.1.1.2.a.4 within one hour and at least operating; restore at least one of the inoperable offsite c
~f to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT SHUTDO
,within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
OPERABLE status, restore at least two offsite circuits to OPERA status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTD the fc11owing 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
f.
With diesel generators IA and 18 of the above required A.C. electrical A.C. sources by perfot aing Surveillance Requirements 4 4.8.1.1.2.a.4 within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; I
restore at lesst one of the inoperable diesel generators 1A and 1B
?
to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT SHUTD the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
Restore both diesel generators 1A and 18 to OPERABLE status within 72 hocrs from time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
w, 4
RIVER BEND - UNIT 1 3/4 8-2
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ELECTRICAL POWER SYSTEMS
[
SURVEILLANCE REQUIREMENTS o.
4.8.1.1.1 Each of.,the above required independent cir:uits between the offsite transmission network and the onsite Class IE distribution system shall be:
. Determined OPERABLE at least once per 7 days by verifying correct a.
. breaker alignments and indicated power' availability, and b.
Demonstrated OPERABLE at least once per 18 months 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 be demonstrated OPERABLE: M I
In accordance with the frequency specified in Table 4.8.1.1.2-1 on a a.
STAGGERED TEST BASIS by:
1.
Verifying the fuel level in the day fuel tank.
2.
Verifying the fuel leve' in the fuel storage tank.
3.
Verifying the fuel transfer pump starts and transfers fuel L _.
f the storage system to the day fuel tank.
(
{L 4.
Verifying the diesel starts from ambient condition and acceler-ates to at least 450 rpm for diesel generators 1A and 18 and 900 rpm for diesel generator IC in less than or equal to 10 seconds." The generator voltage and frequency shall be
(
4160 1 420 volts and 60 1 3 Hz within 10 seconds after the start signal. The diesel / generator shall be started for this i
test by using one of the following signals:
a) Manual.
b) Simulated loss of offsite power by itself.
l c) Simulated loss of offsite power in conjunction with an ESF actuatien test signal.
d) An ESF actuation test signal by itself.
- All diesel generator starts for the purpose of this surve lance test may be preceded by an engine prelube period. Further, all survei nce tests, with
[
the exception of once per 184 days,may also be preceded by )armup procedures (e.g. gradual acceleration and/or gradual loading >150 sec. as reconnended by the manufacturer so that the mechanical stress and wear on the diesel engine is minimized.
i j
[*conddia el ge 'ator s 6t (1 sec)jndsubsehentloadbg(6,0bc)
T m
ent ons all be erra.
at least on:e per 184, days in these rveil nee t
s.
other ngine tart d'nd loydfng forJh6 purpos'e off is sur illang esti may b recede by ngine-prelube pef f od and/or o)her wa procydure rec ended the nufag rert/ minimize echanijcaI stryss and ar on j;he ine.
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l RIVER BEND - UNIT 1 3/4 8-3 APR 2 61985
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F FINN"" DMFT 3
' ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)
N 4,g, g -E p -' 5.
Verifying the_ diesel generator is synchronized, loaded to W l
. n fp -- - ' ^.J130 kw for diesel generators IA and 18 and
[ D.:
2600 kw fc diesel generator IC in less than or ecual to 60 second
- and operates with this load for at least 60 minutes.
l 6.
Verifying the diesel generator is aligned to provide standby power to the associated emergency bysses.
i 7.
Verifying the pressure in all diesel generator air start receivers to be greater than or equal to 160 psig.
b.
At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying for diesel generator 1A and 18 that the lube oil circulating pump is operating.
- W.
By removing accumulated water:
1)
From the day tank at least once per 21 days and after each occasion when the diesel is operated for greater than 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, and 2)
From the storage tank at least once per 31 days.
g d'.
By sampling new fuel oil in accordance with ASTM 04057-81 prior to addition to the storage tanks and:
C 1)
By verifying in accordance with the tests specified in ASTM 0975-81 prior to addition to the storage tanks that the sample has:
a)
An API Gravity of within 0.3 degrees at 60'F or a specific gravity of within 0.0016 at 60/60*F, when compared to the supplier's certificate or an absolute specific gravity I
at 60/60*F of greater than or equal to 0.83 but less than or equal to 0.89 or an API gravity at 60*F of greater than or equal to 27 degrees but less than or equal to 39 degrees.
b)
A kinematic vicosity at 40*C of greater than or equal to 1.9 centistokes, but less' than or equal to 4.1 centistokes, -
if gravity was not determined by comparison with the supplier's certification.
in 1-l c)
A flash point equal to or greater than 125'F, and i
(
d). A clear and br'ght appearance with proper color when tested in accordance with ASTM D4176-82.
Y
/A*U
/5 Q
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' _skraje 7h}wks /b addWl477dd' W/k
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l JA)
By verifying within 31 days of obtaining t5e sample that the other properties specified in Table 1 of ASTM 0975-81 are met i
i when tested in accordance with ASTM D975-81 except that the analysis for sulfur may be performed in accordance with ASTM D1552-79 or ASTM D2622-82.
x T:
,d
-5...
. sm - -u-- r --m s - - - - - - ' - - -
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A '
)
'2600 kw fo dicse'l gensrator IC in Icss than or equal to
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""J 60 stcond and cparatas with this. load for at locst 60 cinutes.
l 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 160 psig, b.
At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying for diesel generator 1A and.
18 that thg lube oil circulating pump is operating.
4 W.
By removing accumulated water:
1).
From the day tank at least once per 31 days and after each occasion when the diesel is operated,for greater than 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, and 2)
From the storage tank at least once per 31 days.
s' t.
By sampling new fuel oil in accordance with ASTM D4057-81 prior to addition to the storage tanks and:
['
1)
By verifying in accordance with the tests specified in ASTM
\\
0975-81 prior to addition to the storage tanks that the sample has:
a)
An API Gravity of within 0.3 degrees at 60*F or a specific 4
gravity of within 0.0016 at 60/60*F, when compared to the i
supplier's certificate or an absolute specific gravity I
at 60/60*F of greater than or equal to 0.83 but less than or l
equal to 0.89 or an. API gravity at 60*F of greater than or equal to 27 degrees but less than or equal to 39 degrees.
b)
A kinematic vicosity at 40*C of greater than or equal to 1.9 contistokes, but less' than or equal to 4.1 centistokes,.
if gravity was not determined by comparison with the in supplier's certification.
t-I c)
A flash point equal to or greater than 125'F, and 1
j ss.
d)
A clear and bright appearance with proper color when tested in accordance with ASTM D4176-82.
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By verifying within 31 days of obtaining the sample that the other pt'operties specified in Table 1 of ASTM 0975-81 are met when tested in accordance with ASTM D975-81 except that the
,' analysis for sulfur may be performed in accordance with y,:: _. e- ;
ASTM D1552-79 or. ASTM D2622-82.
. r-
.g At least once every 31 days by obtaining a sample of fuel oil from the storage tanks in accordance with ASTM D2276-78, and verifying B,
that total particulate contamination is less than 10 mg/ liter when l.
checked in accordance with ASTM D2276-78, Method A.
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C vi us e 6y w w 6 uafgrwe6 utenf or yque s o
.3 out seps scan or altif4.1Ahentested n accpeda e wi TM-/1975-e an i uri y leyel of less an 2 og.
ins es-er 1 m.
hen teste in dcor nce w th ASTN'D2 4-70 e apt hat he e t of new fuel for impur y lev 1 shal be erfo d wit n 7 day a ter addition of the new uel to the orage tank.
f.
At least once per18 months, during shutdown, by:
.I 1.
Subjecting the diesel to an inspection in accordance with 3l' procedures prepared in conjunction with its manufacturer's recommendations for this class of standby servics.
- t 2.
Verifying the diesel generator capability to reject a load of i
.]
greater than or equal to 917.5 kw for diesel generator 1A, greater than or equal to 509.2 kw for diesel generator 18, and greater than
]
or equal to 1995 kw for diesel generator IC while maintaining vol-tage at 4160 1 420 volts and frequency at 60 i Hz while maintain-l ing engine speedlyj75% of the difference between nominal speed and I
i the overspeed trip'setpoint or 15% above nominal, whichever is less.
l3
-*The diesel generator start (10 sec) ard ubsequent loadin (60 see) from ambien
/
condi ons shall be rformed at least on per 184 days i these surveillance f
tests.
13 other engin tarts and loading r the purpose o Qis surveillance #
testing be preceded by engine prelube per d and/or other wRrmup procedury recommended the manufacturer to minimize mechanical stress and wear on the
{r engine.
RIVER BEND - UNIT 1 3/4 8-4 APR 2 61985
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ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) g, j g
3.
Ver,1fying the diesel generator capability to reject a load of
-N3130 kw for diese1 generators IA and 18 and 2600 kw for diesel generator C without tripping. The generator voltage shall not exceed 4784 volts for diesel generators 1A and 18 or &N4 volts.
l for diesel generator IC during and*following the load efection.
4.
Simulating a lossi of offsite power by itself, and:
a)
For divisions I and. II:
1)
Verifying deenergization of the emergency busses and load shedding from the emergency busses.
2)
Verifying the diesel generator starts on the aut signal, energizes the emergency busses with permanently connected loads within 10 seconds, energizes the auto-connected shutdown loads through the sequencing logic and operates for greater than or equal to 5 minutes while its generator is loaded with the shutdown loads.
After energization, the steady state voltage and
%gh frequency of the emergency busses shall be maintain'd e
n at 4160 1 420 volts and 60 i W Hz during this test.
l
)
For division III:
1)
Verifying de energization of the emergency bus.
[
2)
Verifying the diesel generator starts on the auto-start g
signal, energizes the emergency bus with the permanently i
connected loads within 10 seconds and operates for greater than or equal to 5 minutes while its generator is loaded with the shutdown loads. After energization, the steady state voltage and frequency of the emergency bus shall be maintained at 4160 1 420 volts and 60 1 1.2 Hz during this test.
1 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.
The generator voltage and frequency shall be 4160 1 420 volts and 60 8 Hz within 10 seconds after the auto-start i
signal; the steady tate generator voltage and frequency shall be maintained withi these Ifmits during this test.
6.1 1
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ELECTRICAL F0WER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)
C,.,,,
c 6.
Simulating a loss of offsite power in conjunction with an ECCS acttsation test signal, and:
a)
FordivisionsIandII:
1)
Verifying deenergization of the emergency busses and t
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 auto-connected shutdown loads through the load sequencing logic and operates for greater than or equal to
- 5 minutes while its generator is loaded with the 3
emergency loads. After energization, the steady state voltage and frequency of the emergency busses shall be maintained at 4160 1 420 volts and 60 2 / Hz during l
- this test.
g g,j g 9.g b)
For division III:
1)
Verifyingde-energizationoftheemergencybus.{
l 2)
Verifying the diesel generator starts on the auto-start signal, energizes the emergency bus with its loads and the auto-connected emergency loads within
(
10 seconds and operates for greater than or equal to i
5 minutes while its generator is loaded with the il emergency loads. After energization, the steady state voltage and frequency of the emergency bus shall be j
maintained at 4160 1 420' volts and 60 2,9rHz during
'l 3
this test.
Qt, 7.
Verifying that all automatic diesel generator trips are automatic-ally bypassed upon an ECCS actuation signal except:
a)
For divisions 1 and 2, engine overspeed and generator differential current.
b)
For division 3, engine overspeed and generator differential current.
8.
f ng e di sel ener tor per es f at eas 4
ur.
e ies ge rato s
1 lo aed t 313 ed se to er r
and a
26 kw or esel ener tor C./ he j
generator voltage and frequency shall be 4160 2 420 volts and 60 2 & Hz within.10 seconds after the start signal; the steady Q 4 r g J L p.
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22.
m.
Verifying the die enerator op'erates for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
i ~~f Durin the firs urs of this test, the diesel ge 11 4p V
be lo ded to nr "-. r -
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4),kw for diesel u, kW TO W
RIVER BEND -
diesel generators (IA) and (1B) nd (0.tr =&;;
generator (IC). During the resa:ning at, pours of this test
-2 the diesel generator shall be loaded to
. F (--~ ~1B) and (-- J.C.-~. -@i, kw
-.r m3a s..........--
for diesel generator and
\\ or diesel generator nro
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.....m ELECTRICAL POWER SYSTEMS CW SURVEILLANCE REQUIREMENTS (Continued) state generator voltage and frequency shall be maintained within these limits during this test. Within 5 minutes after com-pleting this 24Lhour test, perform Surveillance Requirement 4.8.1.1.2.e.4.a)2) and b)2)*.
i 9.
Verifying that the auto-connected loads to each diesel generator M.7 do not exceed,50 kw for diesel generatorfA andiB and 2600 kw l
4 NM"for diesel generator IC.
- 10. Verifying the diesel generator's capability to:
a)
Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated tora-g tion of offsite power, b)
Transfer its loads to the offsite power source, and c)
Be restored to its standby status.
- 11. Verifying that with the diesel generator operating in a test mode and connected to its bus, a simulated ECCS actuation signal overrides the test mode by (1) returning the diesel generator C'!)
to standby operation, and (2) automatically energizes the emer-gency loads with offsite power.
- 12. Verifying that the automatic load sequence timers are OPERABLE with the interval between each load block within 210% of its design interval for diesel generators ad l
- 13. Verifying that the following diesel generator lockout features prevent diesel generator starting only when required:
I a)
For Diesel Generators 1A and IB:
1 1)
Diesel control panel loss or control power.
I 2)
Starting air pressure below 50 psi.
3)
Stop solenoid energized.
4)
Diesel in the maintenance mode (includes barring device engaged).
5)
Overspeed trip device actuated.
6)
Generator backup protection lockout relay tripped.
b)
For Diesel Generator IC:
1)
Diesel generator lockout relays not reset.
2)
Diesel engine mode switch not in "AUT0" position.
l "If SurveiMance Requirements 4.8.1.1.2.e(4).a)2 and b)2) are not satisfactorily completed, it is not necessary to repeat the preceding 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test.
- Instead, j
the diesel generator may be operated at 3130 kw for diesel generators IA and i
18and2600.kwfordieselgenerator1Cforfonehouroruntiloperating
. j temperatures have stabilized.
(N b RIVER BEND - UNIT 1 3/4 8-7 APR 2 61985
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ELECTRICAL POWER SYSTEMS N
- SURVEILLANCE REQUIREMENTS (Continued) b.
with battery terminal voltage below 110 volts, or ba with battery terminal Iroltage above 144 volts, by verifying that:
-1.
The parameters in Table 4.8.2.1-1. meet the Category B Ifmits, 2.
There is no visible corrosion at either terminals or connectors, or the connection resistance of these items is less than 150 x 10.s ohms, and 1
3.
The average electrolyte temperature of at least one out of six connected cells is above 60*F.
At least once per 18 months by verifying that:
c.
1.
The cells, cell plates and battery racks show no visual indica-tion of physical damage or abnormal deterioration, 2.
The cell-to-cell and terminal connections are clean, tigh of corrosion and coated with anti-corrosion material, T...
l 3.
The resistance of each cell-to-cell and tensinal connection is less than or equal to 150 x 10 8 ohms and 4.
The battery charger will supply at least 300 amperes for chargers 1A and 18 and 50 amperes for charger 1C at a minimum of 130.2 volts for at least p?
hours.
l d.
At least once per 18 months, during shutdown, by verifying that i
either:
I 1.
The battery capacity is adequate to supply and maintain in OPERABLE status all of the actual emergency loads for the i
design duty cycle when the battery is subjected to a battery l.
service test, or 2.
The battery capacity is adequate to supply a dummy load of the following profile in accordance with IEEE 450 while maintaining the battery terminal voltage greater than or equal to 105 volts.
i a)
Division I 1671 amperes for the first 60 seconds
> 270 amperes for the next S minutes
> 336 amperes for the next 60 seconds 1270 amperes for the next 228 minutes 1451 amperes for the last 60 seconds 7
l
' RIVER BEND - UNIT 'l 3/4 8-13 APR 2 61985 I
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m ELECTRICAL POWER SYSTEMS C.
SURVEILLANCE REQUIREMENTS (Continued) b)
Division II
'l 502 amperes, for the first 60 seconds 1 261 amper.es for the next 9 minutes
> 327 amperes for the next 60 seconds
> 261 amperes for the next 228aninutes i327amperesforthelast60 seconds c)
Division III amperes for the first 60 seconds amperes for the next 239 minutes gg4 At least once per 60 months during shutdown by verifying that the e.
b'attery capacity is at least 80% of the manufacturer's rating when subjected to a performance discharge test. Once per 60 month interval, this performance discharge test may be performed in lieu of the battery service test.
f.
At least once per 18 months, during shutdown, performance discharge tests of battery capacity shall be given to any battery that shows.
signs of degradation or has reached 85% of the service life expected ;.
for the application. Degradation is indicated when the battery capacity drops more than 10% of rated capacity from its average on previous performance tests, or is below 90% of the manufacturer's rating.
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RIVER BEND - UNIT 1
~3/4 8-14 APR 2 61985 l
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TABLE 4.8.2.1-1 BATTERY SURVEILLANCE REQUIREMENTS-c.
CATEGORY A(1)
CATEGORY B(2)
Parameter Liinits for each.
Limits for each Allowable (3) designated pilot connected cell value for each cell connected cell Electrolyte
> Minimum level
> Minimum level Above top of Level indication mark, indication mark,
- plates, and < %" above and < k" above and not maximum level maximum level indication mark indication mark overflowing Float Voltage 1 2.13 volts
> 2.13 volts (C)
> 2.07 volts
> 1.200(50) (Div. I&II) E 1.190 (Div Specifig Gravity *)
e-296 b) (Div. III) 1.195 (Div. I&II)
Not more.than
[4 g
. III) 020 below the j
gag average of all u.5%3t, f f connected cells M M A,% %.
tM
& ?,po
' Average of all Avertgeof(...
connected cells connected cells 1.205 (Div. I&II)
}
3 1.195(b)(Div.'I&II)
>_ 1.200 (Div. III)
> 1.190(D)(Div. III)
(a) Corrected for elect olyte temperature and level.
(b)
Or battery charging current is less than 2 amperes when on float charge.
(c)
May be corrected for average electrolyte temperature.
t l
(1)
For any Category A parameter (s) outside the limit (s) shown, the battery i
may be considered OPERABLE provided that within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> all the Category B measurements are taken and found to be within their allowable values, and provided all Cate o A
within the next 7 days.
nd B parameter (s) are restored to within Ifmits (2)
For any Category 8 parameter (s) outside the limit (s) shown, the battery i
may be considered OPERABLE provided that the Category 8 parameters are within their allowable values and provided the Category B parameter (s) are restored to within Ifmits within 7 days.
(3)
Any Category B parameter not within its allowable value indicates an inoperable battery.
5
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RIVER BEND - UNIT 1 3/4 8-15 APR 2 61985 i
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ELECTRICAL POWER SYSTEMS
- DISTRIBUTION - SHUTDOWN Cy.:
LIMITING CONDITION FOR OPERATION 3.8.3.2 As a minim'um, the followjng power distribution system divisions shall
~
be energized:
s For A.C. power distribution, Division I or Division II, and when the a.
I HPCS system is required to be OPERABLE, Division III, with:
1.
Division I consisting of:
a) 4160 volt A.C. bus 1 ENS *SWGIA.
b) 480 volt A.C. bus IEJS*LDCIA and 1EJS*LDC2A.
c) 480 volt A.C. MCCs 1EHS*MCC 2A, 2C, 2E, 2G, 2J, 2L, 8A, 14A, 15A and 16A.
d) 120 volt A.C. distribution panels ISCV*PNL2A1, 2A2, 2C1,
,2E1, 2G1, 2J1, 2L1, 8A1, 14A1, 15A1, and 16Al in 480 volt McCs 1EHS*MCC 2A, 2C, 2E, 2G, 2J, 2L, 8A, 14A, 15A and 16A with ISCM*PNLO1A energized from voltage regulating trans-former ISCM*XRC14A1, and IVBS*PNLO1A energized from Un-intarruptible Pow r Supply (UPS) 1ENB*INV01A connected to.
0.C. Division 5 volt D.C. Bus 1EN8"SWG01A and 48 volt l
A.C. MCCs 1EHS*MCC 8A and 14A.
2.
Division II consisting of:
C'.i a) 4160 volt A.C. bus IENS*SWG18.
(
l A
b) 480 volt A.C. bus IEJS*LDCIB and IEJS*LDC28.
c) 480 volt A.C. MCCs 1EHS*MCC 28, 2D, 2F, 2H, 2K, 88, 148, 158 and 168.
i d) 120 volt A.C. distribution panels 1SCV*PNL281, 2B2, 201, 2F1, 2H1, 2K1, 881,1481,15B1 and 1681 in 480 volt MCCs 1EHS*MCC 28, 2D, 2F. 2H, 2X, 88, 148, ISB and 16B with ISCM*PNLO1B energized from voltage regulating transformer ISCM*XRC1481, and IVBS*PNLO18 energized from Uninterrup-tible Power S pply (UPS) 1ENB*INV018 connected to D.C.
Division I #
5 volt D.C. Bus 1ENB*SWG018 and 480 volt I
A.C. McCS 1EHS*MCC 88 and 148.
3.
Division III consisting of:
a) 4160 volt A.C. bus 1E22*S004.
.i b) 480 volt A.C. switchgear IE22*S002.
t c) 120 volt A.C. distribution panel 1E22*S002PNL and 480 volt MCC 1E22*S002.
l f Y-
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.per rming n equalizin harge n the soci ed b t ry nk ovi d (1
.ts b es/MC I/ pan s are O RABL and ergiz, an 2) e l
bu es/M" / pan assor ted th the her b.te anks re O RABL an ergi d fro their soci d UPS their sso 'ated
.C.
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RIVER BEND - UNIT 1 3/4 8-20 APR 2 6 to85
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ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION (Continued) g b.
HPCS system is required to E. OPERABLE, Division 1.
Division I consisting..' 125 voit D.C. bus 1ENB*SIG01A and distri-bution panels 1ENB*PNLO2A and IENB*JHLO3A and MCC IENB*MCC1.
2.
1)ivision II consisting of 125 volt D.C. bus 1EN3*5WG018 and distri-bution panels 1ENB*PNLO2B and 1ENB*PNLO38.
3.
Division III consisting of 25 volt D.C. distribution panet 1E22*S00PNL.
APPLICABILITY: OPERATIONAL CONDITIONS 4, 5 and #.
A_C, TION:
S\\
For A.C. power distribution:
a.
1.'
With less than Division I and/or Division II of the above required A.C. distribution system energized, suspend CORE ALTERATIONS handling of irradiated fuel in the primary or secondary cpinm and operations with a potential for draining the reactor v - '
4 2.
With Division III of the above required A.C. distribution system _
i not energized, declare the HPCS system inoperable and take the ACTION required by Specification 3.5.2 and 3.5.3.
b.
For D.C. power distribution:
A.,41,;,.y 8J.fl..;3 4 64w,, a;ffg 1.
With less than Division I and/or Division II of the above required
{
D.C. distribution systen energized, suspend CORE ALTERATIONS, handling of irradiated fuel in the p '-.a.,
e.- ncraq :;.mi- =t I
and operations with a potential for draining the reactor vessel.
With Division III of the above required D.C. distribution system 2.
not energized, declare the HPCS system inoperable and take the ACTION required by Specification 3.5.2 and 3.5.3.
The provisions of Specification 3.0.3 are not applicable.
c.
l
- When handling irradiated fuel in the primary or secondary containment.
'I APR 2 61985 RIVER BEN 9 - UNIT l' 3/4 8-21 e
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l A d A'Q ELECTRICAL POWER SYSTEMS _
r ECTRICAL EQUIPMENT PROTECTIVE DEVICES 3/4.
t/
A.C. CIRCUITS INSIDE CONTAINMENT
~
LINITING GNDITION FOR OPER TION q
C i
its inside containment shall be X
3.8.
1 'I ': 't"The fallowing A.. c rcu de-e gized*:
Circuit trabers ( _, _, _ and _ ) in panel ( '
). 1J PMQ d
a.
).
'*/
Circuit numbers ( _, _, _ and _ ) in panet (
b.
d-bPERATIONAL CONDITIONS 1,2 and 3..
APPLICABILITY:
]
ACTION:
i s energized, trip the associated circult With any of the above Irguirepanel(s) w thin 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
breakar(s) in the specifie SURVEILLANCE REQUIRENEVTS Each of the above required A.C. circuits shall be determined to be F
~
de-energized at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> ** by verifying that the associat 4.8.4.1
~
circuit breakers are in the tripped conditiors.
l l
e Weept during entry into the containment.
- Except at least once per 31 days if locked, sealed or otherwise the tripped condition.
I i
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ELECTRICAL POWER SYSTEMS.
FIN.Frb wie1 73 n -= -.
3 3/4.8.4 ELECTRICAL EQUIPMENT PROTECTIVE DEVICES b
PRIMARY CONTAINMENT PENETRATION CONDUCTOR OVERCURRENT PROTECTIVE DEVICES LIMITING CONDITION FT)R OPERATION _
g _
3.8.4 72 All primary containment penetration conduct.or overcurrent protective i
devices shown in Table 3.8.4.1-1 shall be OPERABLE.
~
APPLICABILITY: OPERATIONAL CONDITIONS 1, 2 and 3.
ACTION:
a.
With one or more of the primary containment. penetration conductor overcurrent protective devices shown in Table 3.8.4.1-1 inoperable, declare the affected system or component inoperable and apply the appropriate ACTION statement for the affected system and:
1.
For 4.16 kV circuit breakers, de-energize the 4.16 kV circuit (s) by tripping the associated redundant. circuit breaker (s) within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> and verify the redundant circuit breaker to be tripped at least(m per 7 days thereafter.
l 2.
For 480 volt circuit breakers, remove the inoperable circuit breaker (s) ~
from service by racking out the breaker within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> and verify -
the inoperable breaker (s) to ce racked out at least once per 7 days j
thereafter.
3.
For 480 volt MCC circuit breaker / fuse combination starters, remove the inoperable starter (s) from service by locking the breakers open and removing the control power fuse within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> and verify the inoperable starter (s) circuit breaker to be locked open with the
~
control power fuse removed at least once per 7 days thereafter.
4.
For 120 volt circuit breakers, remove the inoperable circuit breaker (s) from service by racking out the breaker within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> and verify the inoperable breaker (s) to be racked out at least once per 7 days j
thereafter.
I I
Otherwise, be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
b.
The provisions of Specification 3.0.4 are not applicable to overcurrent i
devices in 4.16 kV circuits which have their redundant circuit breakers tripped or to 480 or 120 volt circuits which have the inoperable circuit j
breaker racked out or locked open.
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l RIVER BEND - UNIT 1 3/4 8-23 APR 2 61985 i
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= a m, nth a#hf15 I
=
C SURVEILLANCE REQUIREMENTS 4.8.4.2 protective devices 4hown in Table 3.8.4.1-1 shall b LE:
At least once per 18' months:
a.
~
1.
By verifying that the cedium voltage 4.16 KV circuit breakers
..M are OPERABLE by selecting, on a rotating basis, at least one o the four circuit breakers and performing:
a)
A CHANNEL CALIBRATION of the associated protective and b)
An integrated system functional test which includes simula automatic actuation of the system and verifying that each
., relay and associated circuit breakers and overcurrent contr circuits function as designed.
c) tests, an additional representative sample ons1 of the four circuit breakers of the inoperable type shall 4
or all circuit breakers of that type have been fu I
tested.
(
~
7; 2.
By selecting and functionally testing a representative sample of at least 10% of each type of lower voltage circuit breakers.
Circuit breakers selected for functional testing shall be selected t
on a rotating basis, 7 _tA,t y t.-. 41,y consist of injecting @qTesting of these circuit breakers shall 5
4 setooint and_ measuring the response timef The measure te-e A.l.3 %,.f..
4,..J
.i w shall be compared to the manuracturer's data to ensure that, setc.:.t.f t4 ;.,%t.....o Circuit breakers found inoperable during func j
i d *"
j r.
shall be restored to OPERABLE status prior to resuming operation.
For each circuit breaker found inoperable during these functional tests, an additional representative sample.of at least 10% of l
all the circuit breakers of the inoperable type shall also be functionally tested until no ecre failures are found or all g
y circuit breakers of that type have been functionally tested.
7 4..
-t RIVER BEND - UNIT 1 3/4 8-24 APR 2 6125 S
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ELECTRICAL POWER SYSTEMS f
SURVEILLANCE REQUIREMENTS (Continued) 0 3.
By selecting and functionally testing a representative sample of at least 10% of.each type of motor starter used for pene-tration redundant overcurrent protection, motor starters selected for functional testing shall be selected on a rotating basis.
Testing of these motor starters sha>1 consist of injecting a current with a value equal to the locked stator current of the 1
associated motor and verifying that the motor starter operates to interrupt the current within the associated thermal overload time delay band width for that current as specified by the manu-i facturer. Motor starters found inoperable during functional j
testing shal17 restored to OPERABLE status prior topesuming i
operation. For each motor starter found inoperable during these functional tests, an additional representative sample of at least 10% of all the motor starters of the inoperable type shall also g
be functionally tested until no more failures are found or all motor starters of that type have been functionally tested.
b.
Atleastonceper60monthsbysubjectingeachckrcuitbreaker i
inspection and preventive maintenance in accordance with proce res prepared in conjunction with its manufacturer's recommendations.
C-
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ELECTRICAL POWER SYSTEMS OTHER OVERCURRENT PROTECTIVE DEVICES
. LIMITING CONDITION FOR OPERATION 3.8.4.2 The overcGrrent p' rotectjon devices shown in Table 3.8.4.2-1 shall be OPERABLE.
APPLICABIEITY: At all times.
+
ACTION:
With one or more of the overcurrent protective devices shown in Table 3.8.4.2-1 inoperable, remove the inoperable circuit breaker (s) from to OPERA 8LE status within 7 days. service by racking out the breaker w the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> SURVEILLANCE REQUIREMENTS 4.8.4.2 The overcurrent protective devices shall be demonstrated OPERABL circuit breaker on a roJating basis.at least once per 18 months by selectin consist of infecting Vcurrentsin excess of the breaker's nominal setpoint and measuring the response time, I
to the manufacturer's data to ensureThe measured ::;r,x %r.e shall be compared I
specified by the manufacturer.
hat it is less than o equal to a value aftleikt:~Delas.R.Ttr.
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REACTOR PROTECTION SYSTEM ELECTRIC POWER MONITORING LIMITING CONDITION FOR OPERATION 3.8.4.3 MG set or alternate power supply shall be OPERABLE.Two RPS ele APPLICABILITY: At all times.
ACTION:
With one RPS electric power monitoring channel for an inservice RPS MG a.
monitoring channel to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> associated RPS MG set or alternate power supply from service.
b.
With both RPS. electric power monitoring channels for an inservice RPS MG set or alternate power supply inoperable, restore at least one electric power monitoring channel to OPERABLE status within 30 minutes or remove.
the associated RPS MG set or alternate power supply from service.
i SURVEILLANCE REQUIREMENTS i
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4.8.4.3 The above specified RPS electric power monitoring channels shall be
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determined OPERABLE:
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At least once per 18 months by demonstrating the OPERABILITY of over-1 voltage, under-voltage and under-frequency protective instrumentation l
by performance of a CHANNEL CALIBRATION including simulated automatic actuation of the protective relays, tripping logic anc output circuit breakers and verifying the following setpoints.
Overvoltagei132VAC,BusA,and5[J' 1.
VAC, Bus 8.
I Under-voltage 1 108 VAC, Bus A, and 1 MfVAC,' Bus B, and 2.
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Under-frequency 157 Hz, + 2, - 0%, Bus A and B.
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' 3/4.8.4 ELECTRICAL EQUIPMENT PROTECTIVE DEVICES geg yf_ c;,,,,,,,g Containmentelectrical' penetrations,eedpenetrationconductorsfareprotected by, demonstrating # y periodic surveillancethe OPERABILITY-of primary and b l
circuit brea_ker b (a JheA.
s~,,ra (sM e surveillance requirements applicable toflower voltage circuit breakers d f=c; provides assurance of breaker and 4 wee reliability by testing at least one representative sample of each manufacturers brand of circuit breaker and/or Q@ 9 m hse.
Eachmanufacturer'smoldedcaseandmetalcasecircuitbreakersand/or feses are grouped into representative samples which are than tested on a rotating basis to ensure that all breakarc and/o b% exists within any manufacturer's br'a" rid'[r 4uees are tested.f circuit bre If a wide variet necessary to divide that manufacturer's breakers and/or hses,igto groups and treat each grcup as a separate type of breaker or hees for surve1 Hance purpose >.A st.. g r The reactor protection system (RPS) electric power monitoring assemblies
-provide redundant protection to the RPS and other systems which receive power from the RPS buses by acting to disconnect the RPS from the power source cir-cuits in the presence of an electrical fault in the power supply.
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