ML20199H277
| ML20199H277 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 01/20/1999 |
| From: | ILLINOIS POWER CO. |
| To: | |
| Shared Package | |
| ML20199H264 | List: |
| References | |
| NUDOCS 9901250157 | |
| Download: ML20199H277 (17) | |
Text
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to U-603146.
LS-98-012 Page 1 of 10 Attached Marked-Up Pages of the Technical Specifications 9901250157 990120 PDR ADOCK 05000461 P
py,
LOP Instrumentation f
3.3.8.1 3.3 INSTRUMENTATION 3.3.8.1 Loss of Power (LOP) Instrumentation LCO 3.3.8.1 The LOP instrumentation for each Function in Table 3.3.8.1-1 shall be OPERABLE.
APPLICABILITY:
N0 DES 1, 2, and 3 When the associated diesel generator (OG) is required to be OPERABLE by LCO 3.8.2, "AC Sources--Shutdown."
ACTIONS
NOTE-------------------------------------
Separate Condition entry is allowed for each channel..
CONDITION REQUIRED ACTION COMPLETION TIME A.
'One or more channels A.1 Place channel in I hour inoperable.
trip.
AND A.2
NOTE---------
Only applicable for Functions 1.c, l.d, g 1.e,_2.c. 2.d. and 7 2.e. fter Release for' perations RFO) of the correspo(nding tylant modification.
Restore channel to 7 days OPERABLE status.
B.
Required Action and B.1 Declare associated DG Immediately associated Completion Time not met.
CLINTON 3.3-78 Amendment No.110 I
3.3.8.1 Tabte 3.3.8.1 1 (page 1 of 1)
Loss of Power Instrumentation
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REQUIRED CHANNELS PER SUR*KILLANCE ALLOWABLE FUNCTION DIVISION REQUIREMENTS VALUE 1.
Divisions 1 and 2 -4.16 kV Emergency Bus Undervoltage a.
Loss of Voltage-4.16 kV 6
sa 3.3.8.1.3 e 2345 V and 5 3395 V basis sa 3.3.8.1.4 b.
Loss of Voltage-Time 6
SR 3.3.8.1.3 s 10 seconds Detsy go 4lll sa 3.3.8.1.4 c.
Degraded Voltage 2
sa 3.3.8.1.2 t MV and 5 3901 Y (a)
Reset -4.16 kV basis sa 3.3.8.1.3 sa 3.3.8.1.4 4 Q.Tl 4092.
d.
Degraded Voltage 2
sa 3.3.8.1.2 EMV and s MV (b)
Drop-out -4.16 kV basis sa 3.3.8.1.3 SR 3.3.8.1.4 e.
Degraded Voltage - Time 1
sa 3.3.8.1.2 a 14 seconds and s 16 seconds Delay sa 3.3.8.1.3 st 3.3.8.1.4 2.
Olvision 3 -4.16 kV Emergency Bus Undervoltage a.
Loss of Voltage-4.16 kV 4
sa 3.3.8.1.3 t 2345 y and 5 2730 V basis sa 3.3.8.1.4 b.
Loss of Voltage-Time 1
st 3.3.8.1.3 5 3.0 seconds Detey sa 3.3.8.1.5 4090 4Ill
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c.
Degraded Voltage 2
SR 3,.3.8.1.2 t UV and s.399fv (a)
Reset -4.16 kV basis SR 3.I.8.1.3 sa 3.3.3.1.4 4o$l 4092 d.
Degraded Voltage 2
. SR 3.3.8.02 t N V and 5 M (b)
Drop out -4.16 kV bests sa 3.3 3.1.3 st 3.3.8.1.4 e.
Degraded Voltage-Time 1
SR 3.3.8.1.2 2 14 seconds and 5 16 seconds Delay st 3.3.8.1.3 st 3.3.8.1.4 sr ele 15e fo' opera. tion (RFO (a) This value.,is to be used af te f the corresponding plant modiffcation. Prior to RF0 tM: ! =.';n '
2.
_g h
(b) This vetIie'Is to'be used after M of the corresporxfing plant modification.
P. lor to RF0 of the corresponding plant modification the Degraded Voltage prop-out -4.16 kV basis Attowable Value shall be
- -' " :t ; :
".' 2: 3848 V and 6 38% V.
c) im vaive.. w v. ungtf"Bfter uru or mz m. m
.., y. rn - 1 ca n on. rrior to Rro of the corresponding plant modification the Degraded Voltage Drop-out -4.16 kV bests Regul ed Channets Perj Ivlslon shatt be 3.
f ht Cartcs bing f3b N*
E **
- Y O
Reset - 4.tc kV basis Alt-awe. Value sul be h 3B% V d"J ' *
- Cl.INTON Amendment No. M (
3.3-80
AC Sources-Operating 3.8.1
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l ACTIONS (continued) 1.
CONDITION
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REQUIRED ACTION COMPLETION TIME
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G.
Three or more required G.1 Enter LCO 3.0.3.
Immediately AC sources inoperable.
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.1.1 Verify correct breaker alignment and 7 days indicated power availability for each offsite circuit.
NOTES-------------------
1.
Performance of SR 3.8.1.7 satisfies this SR.
l 2.
All DG starts may be preceded by an
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engine prelube period and followed by a warmup period prior to loading.
3.
A modified DG start involving idling and gradual acceleration to synchronous speed may be used for this SR as recommended by the manufacturer.
When modified start procedures are not used, the time, voltage, and frequency tolerances of SR 3.8.1.7 must be met.
f Verify each DG starts from standby As specified in conditions and achieves steady state Table 3.8.1-1 DM voltage #38#V and s 4580 V and frequency k
l 2: 58.8 Hz and s 61.2 Hz.
I, (continued) i 3
CLINTON AmendmentNo.M
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3.8-4 1
ACSources-bperatbg 3.8.1 SURVEILLANCE REQUIREMENTS (continued)
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SURVEILLANCE FREQUENCY
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NOTE------------------
All DG starts may be preceded by an engine prelube period.
Verify each DG starts from standby 184 days condition M_andchieves, in s 12 seconds, HOM voitage a-V and s 4580 y and frequency a 58.8 Hz and s 61.2 Hz.
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 automatic and manual transfer of 18 months unit power supply from the normal offsite circuit to the-alternate offsite circuit.
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NOTES--------------------
l 1.
This Surveillance shall not be performed in MODE 1 or 2.
- However, credit may be taken for unplanned events that satisfy this SR.
2.
If performed with DG synchronized with offsite power, it shall be performed at a power factor s 0.9.
Verify each DG rejects a load greater than 18 months or equal to its associated single largest post accident load and following load rejection, the engine speed is maintained less than nominal plus 75% of the difference between nominal speed and the l
overspeed trip setpoint or 15% above nominal, whichever is lower.
(continued)
CLINTON 3.8-6 Amendment No.
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AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)
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SURVEILLANCE FREQUENCY
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SR 3.8.1.11
NOTES-------------------
i 1.
All DG starts may be preceded by an engine prelube period.
2.
This Surveillance shall not be perfonned in MODE 1, 2, or 3.
However, credit may be taken for unplanned events that satisfy this SR.
Verify on an actual or simulated loss of 18 months offsite power signal:
a.
De-energization of emergency buses; b.
Load shedding from emergency buses for I
Divisions 1 and 2; and i
c.
DG auto-starts from standby condition and:
1.
energizes permanently connected loads in s 12 seconds,
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2.
energizes auto-connected shutdown
- loads, 3.
maintains steady state voltage i
i ko8%.
m 387( V and 5 4580 V, I
4.
maintains steady state frequency a 58.8 Hz and s 61.2 Hz, and 5.
supplies permanently connected and auto-connected shutdown loads for a 5 minutes.-
(continued)
I CLINTON 3.8-8 Amendment No.
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3.8.1
, SURVEILLANCE REQUIREMENTS (continued)
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SURVEILLANCE FREQUENCY SR 3.8.1.12
NOTES-------------------
1.
All DG starts may be preceded by an engine prelube period.
2.
This Surveillance shall not be performed in MODE 1 or 2.
- However, credit may be taken for unplanned events that satisfy this SR.
Verify on an actual or simulated Emergency 18 months Core Cooling System (ECCS) initiation signal each DG auto-starts from standby condition and:
a.
In s 12 seconds after auto-start and duringtests,achievesvoltage24876 HOM V and s 4580 V; b.
In s 12 seconds after auto-start and during tests, achieves frequency a 58.8 Hz and s 61.2 Hz; and
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c.
Operates for a 5 minutes.
SR,3.8.1.13
NOTE--------------------
This Surveillance shall not be performed in MODE 1, 2, or 3.
However, credit may be taken for unplanned events that satisfy this SR.
Verify each DG's automatic trips are 18 months bypassed on an actual or simulated ECCS initia, tion signal exc'ept:
4 a.
Engine overspeed; b.
Generator differential current; and c.
Overcrank for DG 1A and DG 18.
(continued)
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CLINTON 3.8-9 AmendmentNo.'jMI j
q AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE FREQUENCY SR 3.8.1.14
NOTES-------------------
1.
Momentary transients outside the load and power factor ranges do not invalidate this test.
2.
This Surveillance shall not be performed in MODE I or 2.
- However, credit may be taken for unplanned events that satisfy this SR.
Verify each DG operating at a power factor 18 months s 0.9 operates for 2 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s:
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 4062 kW for DG 1A, 2 4069 kW for DG 18, and 2 2310 kW for DG IC; and b.
For the remaining hours of the test loaded a 3482 kW for DG IA, 2 3488 kW for DG 18, and 21980 kW for DG IC.
SR 3.8.1.15
NOTES-------------------
1.
This Surveillance shall be performed within 5 minutes of shutting down the DG after the DG has operated 2 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded a 3482 kW for DG 1A, a 3488 kW for DG 18, and 21980 kW for DG IC.
Homentary transients outside of the load range do not invalidate this test.
2.
All DG starts may be preceded by an engine prelube period.
Verify each DG starts and achieves, in 18 months s 12 seconds, voltage 2 and s 4580 V and frequency 2 58.8 liz and s 61.2 Hz.
(continued)
CLINTON 3.8-10 Amendment No.
AC Sources-Operating 3.8.1
. SURVEILLANCE REQUIREMENTS (continued)
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SURVEILLANCE FREQUENCY SR 3.8.1.19
NOTES-------------------
1.
All DG starts may be preceded by an engine prelube period.
2.
This Surveillance shall not be performed in MODE 1, 2, or 3.
However, credit may be taken for unplanned events that satisfy this SR.
Verify, on an actual or simulated loss of 18 months
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offsite power signal in conjunction with an I
actual or simulated ECCS initiation signal:,
a.
De-energization of emergency buses; b.
Load shedding from emergency buses for Divisions 1 and 2; and l
c.
DG auto-starts from standby condition and:
1 1.
energizes permanently connected
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loads in s 12 seconds, 2.
energizes auto-connected emergency
- loads, 3.
achieves steady state voltage 2 39 # Y and s 4500 V, l
Ho8
4 4.
achieves steady state frequency a 58.8 Hz and s 61.2 Hz, and 5.
supplies permanently connected and auto-connected emergency loads for a 5 minutes.
(continued) l I
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CLINTON 3.8-13 Amendment No.
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AC Sources-Operating 3.8.1
. SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE FREQUENCY SR 3.8.1.20
NOTE--------------------
l All DG starts may be preceded by an engine i
prelube period.
Verify, when started simultaneously from 10 years standby condition, each DG achieves, in QQQLJ s 12 seconds, voltage h 38MfV and s 4580 V l
t andfrequencya58.8Hzpnds61.2Hz, l
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1 CLINTON 3.8-14 Amendment No.
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to U 603146 LS-98-012 Page l of "I Attached Marted-Up Pages of the Technical Specifications Bases s
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4 LOP Instrumentation B 3.3.8.1 B 1.3 INSTRUMENTATION ~ ~
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B 3.3.8.1 Loss of Power (LOP) Instrumentation BASES i
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BACKGROUND Successful operation of the required safety functions of the Emergency Core Cooling Systems (ECCS) is dependent upon the availability of adequate power sources for energizing the various components such as pump motors, motor operated valves, and the associated control components. The LOP instrumentation monitors the 4.16 kV emergency buses.
l Offsite power is the. preferred source of power for the i
4.16 kV emergency buses.
If the monitors determine that insufficient power is available, the buses are disconnected from the offsite power sources and connected to the onsite diesel generator (DG) power sources.
l Each 4.16 kV emergency bus has its own independent LOP instrumentation and associated trip logic. The voltage for l
the Division 1, 2, and 3 buses is monitored at two levels, which can be considered as two different undervoltage functions: loss of voltage and degraded voltage.
The LOP instrumentation causes various bus transfers and
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disconnects. Each Division 1 and 2 emergency bus Loss of Voltage Function is monitored by two undervoltage relays on the energency bus and two undervoltage relays on each of the t
two offsite power sources. The outputs of these relays are l
arranged in a two-out-of-two taken three times logic i
configuration. Each of these relays is an inverse time l
delay relay. The Division 3 emergency bus Loss of Voltage Function is monitored by four undervoltage relays whose outputs are arranged in a one-out-of-two taken twice logic configuration. The out)ut of this logic inputs to a time delay relay.)rior to.telease for operations (RF0) of the associated plant modification (i.e., modification AP-027 for (Division 1 or AP-028 for Division 2), each Division 1 and Division 2 emerge'ncy bus Degraded Voltage Function is monitored by two undervoltage relays for each emergency bus whose outputs are arranged in a two-out-of-two logic configuration. The output of this logic inputs to a time i
delay relay for each emergency bus (Ref.1).
Prior to RF0 of modification AP-029, the Division 3 emergency bus Degraded Voltage Function is monitored by one undervoltage I
relay with three output contacts arranged in a three-out-ofd (continued) 4 CLINTON B 3.3-222 Revision No.
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LOP Instrumentation B 3.3.8.1 BASES
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BACKGROUND three logic configuration.Following RF0 of the associateV)ts The output of this logic in,pu (continued) to a time delay relay.
plant modification,fgach Division 1, Division 2, and DlVision 3 emergeTn y bus Degraded Voltage Function is monitored by two undervoltage relays for each emergency bus whose outputs are arranged in a two-out-of-two logic configuration.
The output of this logic inputs to a time delay relay for each emergency bus.
APPLICABLE The LOP instrumentation is required for the Engineered SAFETY ANALYSES, Safety Features to function in any accident with a loss of LCO, and offsite power. The required channels of LOP instrumentation APPLICABILITY ensure that the ECCS and other assumed systems powered from the DGs provide plant protection in the event of any of the analyzed accidents in References 2, 3, and 4 in which a loss of offsite power is assumed. The initiation of the DGs on loss of offsite power, and subsequent initiation of the ECCS, ensure that the fuel peak cladding temperature remains below the limits of 10 CFR 50.46.
Accident analyses credit the loading of the DG based on the loss of offsite power during a loss of coolant accident
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(LOCA). The diesel starting and loading times have been included in the delay time associated with each safety system component requiring DG supplied power following a loss of offsite power.
The LOP instrumentation satisfies Criterion 3 of the NRC Policy Statement.
The OPERABILITY of the LOP instrumentation is dependent upon the OPERABILITY of the individual instrumentation channel Functions specified in Table 3.3.8.1-1.
Each Function must have a required number of OPERABLE channels per 4.16 kV emergency bus, with their setpoints within the specified Allowable Values. A channel is inoperable if its actual trip setpoint is not within its required Allowable Value.
The actual setpoint is calibrated consistent with applicable setpoint methodology assumptions.
The Allowable Values are specified for each Function in the Table. Nominal trip setpoints are specified in the setpoint calculations. The nominal setpoints are selected to ensure that the setpoint does not exceed the Allowable Value (continued)
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CLINTON B 3.3-223 Revision No.
LOP Instrumentation B 3.3.8.1 BASES
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APPLICABLE 1.c. 1.d. l.e. 2.c. 2.d. 2.e, 4.16 kV EmeroencY Bus SAFETY ANALYSES, Undervoltaae (Dearaded Voltaae) (continued)
LCO, and APPLICABILITY instrumentation is to ensure that sufficient power will be available to support the ECCS function during a LOCA.
During a LOCA, the ECCS and other safety systems will be initiated at the start of the event. This large loading of the safety buses results in a voltage transient of sufficient magnitude to start the degraded voltage timers.
If the degraded voltage relays do not reset, which requires the voltage to be restored to a level above the relay reset setpoint, the bus undervoltage time delay relays will trip, resulting in bus transfer to the DGs. Thus, the relay reset (pick-up) setpoint must be high enough to ensure adequate voltage for the safety-related loads.
[ Prior to RF0 of the corresponding plant modification (i.e.,
modification AP-027 for Division 1, AP-028 for Division 2, or AP-029 for Division 3), the Degraded Voltage Function Allowable Value specified is the allowable value for the relay dropout. Following RF0 of the corresponding plant modification, the Degraded Voltage Function Allowable Values j
specified are for the relay dropout and the relay reset.
Because the dropout and reset settings are not independently I
adjustable for the relays utilized for the Degraded Voltage instrumentation prior to RF0 of the associated modification, only the dropout setting is applicable as explained in Tablej u.3.3-1 by footnote (a).
3 The Allowable Values to be used after RF0 of the corresponding plant modification are as determined within IP Calculation 19-AN-19 (Ref. 5). The basis for the reset Allowable Value upper limit is the avoidance of shifting to the onsite source when the offsite source is acceptable as specified within GDC 17. The basis for the reset Allowable.
Value lower limit is the minimum voltage required to support the LOCA loads. The basis for the dropout Allowable Value upper limit is the practical limit of the reset Allowable Value lower limit. The basis for the dropout Allowable Value lower limit ensures adequate voltage to start plant equipment under non-LOCA loading conditions. Because of the voltage transient experienced at the start of a LOCA, the specified Degraded Voltage drop-out Allowable Value lower limit provides significant margin to the setting required to mitigate a LOCA. This value was selected based on other licensing basis events discussed in USAR, Section 8.3.1.1.2 (Ref.1) and calculated in IP Calculation 19-AN-19.
]
(continued)
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CLINTON B 3.3-225a Revision W.
LOP Instrumentation B 3.3.8.1
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BASES l APPLICABLE 1.c. 1.d. l.e. 2.c. 2.d. 2.e.
4.16 kV Emeroency Bus SAFETY ANALYSES, Undervoltaae (Dearaded Voltaae) (continued)
LCO, and APPLICABILITY The Time Delay Allowable Values are long enough to provide time for the offsite power supply to recover to normal voltages, but short enough to ensure that sufficient power is available to the required equipment.
Two channels of 4.16 kV Emergency Bus Undervoltage (Degraded Voltage)FuncJionperassociatedemergencybusforDivisions l__, 2, and 3flexcept 3 channels for Division 3 prior to RFO of_ modification AP-029) fare oniy required to be OPERABLE when the associated DGTis required to be OPERABLE to ensure that no single instrument failure can preclude the DG function. JTwo channels input to each of the Division 1, 2_,
and 3 DGs)(except that 3 channels input to the Division 3 DG) 3rior to RF0 of modification AP-029K The Degraded Voltage unction logic for each Division inputs to a single time r
M delay relay. Thus, only one time delay channel is associated with each Division.) Refer to LCO 3.8.1 and LC0 3.8.2 for Applicability Bases for the DGs.
Footnotes (a), b),
n (c to Table 3.3.8.1-1 identify that the TS changes are not e ective until RF0 of the
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N corresponding plant modification. The planned modificatio are: AP-027 for Division 1, AP-028 for Division 2, and AP-29 for Division 3fx n, asena.8 nw~~ ev ~ tu-g= w ~My A edes nuac <ata, &;.,n i.s A P-O *h6.
ACTIONS A Note has been provided to modify the ACTIONS related to LOP instrumentation channels. Section 1.3, Completion Times, specifies that once a Condition has been entered, subsequent divisions, subsystems, components, or variables expressed in the Condition discovered to be inoperable or not within limits will not result in separate entry into the Condition. Section 1.3 also specifies that Required Actions of the Condition continue to apply for each additional failure, with Completion Times based on initial entry into the Condition. However, the Required Actions for inoperable LOP instrumentation channels provide appropriate compensatory measures fer separate inoperable channels. As such, a Note has been provided that allows separate Condition entry for each inoperable LOP instrumentation channel.
(continued)
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CLINTON B 3.3-226 Revision No.
.,* e,
' LOP Instrumentation
)
B 3.3.8.1 BASES.....,._,
l ACTIONS A.1 and A.2 (continued)
With one or more channels of a function inoperable, the i
Function may not be capable of performing the intended function. Therefore, only I hour is allowed to restore the inoperable channel to OPERABLE status.
If the inoperable 1-channel cannot be restored to OPERABLE status within the allowable out of service time, the channel must be placed in the tripped condition per Required Action'A.I. For Loss of Voltage Functions, placing the inoperable channel in trip l
would conservatively compensate for the inoperability and allow operation to continue. However, for Degraded Voltage Functions, placing the inoperable channel in trip may not conservatively compensate for the inoperability. Because of the assumptions used in the setpoint calculations, the setpoint(s) for the remaining OPERABLE channel (s) may not I
ensure reset of the relay within the required voltage range.
As a result, operation with an inoperable Degraded Voltage channel (s) in trip is limited to 7 days.
Thus, if it is not desired to place the channel in trip (e.g., as in the case where placing the channel in trip would result in a DG initiation) or if the inoperable 5
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channel (s) is not restored to OPERABLE status within the allowable out of service time, Condition B must be entered and its Required Action taken.
The Completion Time is intended to allow the operator time-to evaluate and repair any discovered inoperabilities.
The Completion Times are acceptable because they minimize risk while allowing time for restoration or tripping of channels.
Required Action A.2 is modified by a Note which states that the Required Action is only applicable for Functions 1.c, i
1.d I.e, 2.c, 2.d, and 2.gfollowing RF0 of the T
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corresponding plant modification (i.e.. modification AP-027) l AP-028, or AP-029kr The 7-day limitation is imposed as a result of assumptions associated.with the setpoint calculations for the modified Degraded Voltage Function instrumentation.
(continued)
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CLINTON B 3.3-227 Revision No.
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~a AC Sources-Operating B 3.8.1
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BASES - (continued)
SURVEILLANCE The AC sources are designed to permit inspection and REQUIREMENTS testing of all important areas and features, especially those that have a standby function, in accordance with 10 CFR 50, GDC 18 (Ref. 8).
Periodic component tests are supplemented by extensive functional tests during refueling outages under simulated accident conditions.
The SRs for demonstrating the OPERABILITY of the DGs are in accordance with the recommendations of Regulatory Guide 1.9 (Ref. 3),
Regulatory Guide 1.108 (Ref. 9), and Regulatory Guide 1.137 (Ref. 10).
H O 6 H ] Where the SRs discussed herein specify voltage and frequenc tolerances,.th minimumsand maximum steady state output volta 3870 and 4580 V respectively, are equal to
-2_%
(~~TR)geso and + 10% o the nominal 4160 V output voltage. The
,f specified minimum and maximum frequencies of the DG is 58.8 Hz and 61.2 Hz, respectively, are equal to i 2% of the 60 Hz nominal frequency. The specified steady state voltage and frequency ranges are derived from the recommendations given in Regulatory Guide 1.9 (Ref. 3). However, the minimum voltage was increased to ensure adequate voltage to operate all safety-related loads during a DBA (Ref.14).
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SR 3.8.1.1 This SR ensures proper circuit continuity for the offsite AC electrical power supply to the onsite distribution network and availability of offsite AC electrical power. The breaker alignment verifies that each breaker is in its correct
. position to ensure that distribution buses and loads are connected to their preferred power source and that appropriate independence of offsite circuits is maintained.
The 7 day Frequency;is adequate since breaker position is not likely to change without the operator being aware of it and because its status is displayed in the control room.
SR 3.8.1.2 and SR 3.8.1.7 These SRs help to ensure the availability of the standby electrical power supply to mitigate DBAs and transients and maintain the unit in a safe shutdown condition.
(continued) t CLINTON B 3.8-13 Revision No.
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_ _ _ _ _ _ _ _ _ _ _ _ _ _ _