The ECCS is divided up into two sub-systems; fundamental short-term cooling and long-term cooling. Modeling of the short-term ECCS is beyond the scope of the current program and will not be included. The logic to initiate and control the long-term ECCS is described below.
Short-term ECCS
The short-term ECCS subsystem consists of three independent channels to bring water to the MCC generating the signal. The capacity of the system ensures reactor cooling for the most limiting pipe break accident for the first two minutes. Each of the short-term ECCS channels can provide at least 50% of the required amount of water. Two channels draw from high pressure tanks (accumulators) while the third channel uses the main feedwater pumps.
110 Is there an event that would activate the short-term ECCS? This Trip is prescribed to be normally off. A short-term ECCS signal typically arises from a high pressure signal in the ACS.
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601100
W1(A) VARIABLE CODE = time
W2(I) PARAMETER = 0
W1(A) and W2(I) represent the current transient time
W3(A) RELATIONSHIP = gt
W4(A) VARIABLE CODE = null
W5(I) PARAMETER = 0
No comparison value is entered for the second variable
W6(R) ADDITIVE CONSTANT = 1.e6
This is an arbitrarily high user specified time.
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
111 What is the time delay (default = 1 s) from the event that would actuate a short-term ECCS signal (Trip 110) and the initiation of a short-term ECCS signal for the LHS MCC.
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601110
W1(A) VARIABLE CODE = time
W2(I) PARAMETER = 0
W1(A) and W2(I) represent the current transient time
W3(A) RELATIONSHIP = gt
W4(A) VARIABLE CODE = timeof
W5(I) PARAMETER = 110
W6(R) ADDITIVE CONSTANT = 1.0e6
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
112 What is the time delay (default = 1 s) from the event that would actuate a short-term ECCS signal (Trip 110) and the initiation of a short-term ECCS signal for the RHS MCC.
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601120
W1(A) VARIABLE CODE = time
W2(I) PARAMETER = 0
W1(A) and W2(I) represent the current transient time
W3(A) RELATIONSHIP = gt
W4(A) VARIABLE CODE = timeof
W5(I) PARAMETER = 110
W6(R) ADDITIVE CONSTANT = 1.0e6
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
113 Has it been 5 s since the Group 1 signal? A 5 s delay is used to assess whether the Group 1 signal has occurred and whether the short-term ECCS flow has started. This trip is used in the long-term ECCS logic to assess whether long-term ECCS may begin.
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601130
W1(A) VARIABLE CODE = time
W2(I) PARAMETER = 0
W1(A) and W2(I) represent the current transient time
W3(A) RELATIONSHIP = gt
W4(A) VARIABLE CODE = timeof
W5(I) PARAMETER = 1110
W6(R) ADDITIVE CONSTANT = 5.
5 second delay
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1110 Has either a LHS or a RHS short-term ECCS signal been activated?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611100
W1(A) TRIP NUMBER = 111
LHS high ACS pressure signal
W2(A) OPERATOR = or
W3(A) TRIP NUMBER = 112
RHS ACS high pressure signal
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
Long-term ECCS
The long-term ECCS subsystem consists of three independent channels to bring water to each reactor loop. Each of these channels can provide at least 50% of the required amount of water. Two channels have their own independent ECCS pumps connected to the ACS hot condensate tank (6 pumps at 70 kg/s), while the third channel uses the auxiliary feedwater pumps connected to the deaerator (total of 6 auxiliary feed pumps). The actuation signals for the long-term ECCS are given as follows [ ];
• Low water level (less than -1000 mm below the geometric axis of the steam drum) in the steam separator drums.
• Low pressure difference (less than 0.6 MPa) between any pressure header and the corresponding separator drum.
The actuation logic is developed next.
Low Steam Drum Level
120 Is the LHS collapsed liquid level less than -1000 mm?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601200
W1(A) VARIABLE CODE = cntrlvar
W2(I) PARAMETER = 211
W1(A) and W2(I) represent the collapsed liquid level in the LHS steam drum
W3(A) RELATIONSHIP = lt
W4(A) VARIABLE CODE = null
W5(I) PARAMETER = 0
No comparison value is entered for the second variable
W6(R) ADDITIVE CONSTANT = -1000 mm
The LHS collapsed liquid level is compared to -1000 mm
W7(A) LATCH INDICATOR = l
Once the criteria is met, the trip is latched.
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
121 Is the RHS 1 collapsed liquid level less than -1000 mm?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601210
W1(A) VARIABLE CODE = cntrlvar
W2(I) PARAMETER = 221
W1(A) and W2(I) represent the collapsed liquid level in the RHS 1 steam drum
W3(A) RELATIONSHIP = lt
W4(A) VARIABLE CODE = null
W5(I) PARAMETER = 0
No comparison value is entered for the second variable
W6(R) ADDITIVE CONSTANT = -1000 mm
The RHS 1 collapsed liquid level is compared to -1000 mm
W7(A) LATCH INDICATOR = l
Once the criteria is met, the trip is latched.
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
122 Is the RHS 2 collapsed liquid level less than -1000 mm?
Low Differential Pressure
A trip signal is generated on a low pressure difference between the pressure header and the steam drum (< 0.6 MPa). Since all the pressure headers and the steam drums are lumped together on the LHS of the RELAP model, the control logic is simply the pressure difference between the Component 145 (Pressure Headers) and Component 100 (steam drums). On the RHS, separate signals are generated between the steam drum (Component 500) and the pressure header (Component 545).
123 Is the LHS DP between the pressure header and the steam drums < 0.6 MPa?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601230
W1(A) VARIABLE CODE = p
W2(I) PARAMETER = 145010000
W1(A) and W2(I) represent the pressure in the LHS pressure header
W3(A) RELATIONSHIP = lt
W4(A) VARIABLE CODE = p
W5(I) PARAMETER = 100010000
W4(A) and W5(I) represent the pressure in the LHS steam drum
W6(R) ADDITIVE CONSTANT = 0.6e6 Pa
The low pressure setpoint is 0.6e6 Pa
W7(A) LATCH INDICATOR = l
Once the criteria is met, the trip is latched.
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
124 Is the RHS DP between the pressure header and RHS steam drum 1 < 0.6 MPa?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601240
W1(A) VARIABLE CODE = p
W2(I) PARAMETER = 545010000
W1(A) and W2(I) represent the pressure in the RHS pressure header
W3(A) RELATIONSHIP = lt
W4(A) VARIABLE CODE = p
W5(I) PARAMETER = 500010000
W4(A) and W5(I) represent the pressure in the RHS 1 steam drum
W6(R) ADDITIVE CONSTANT = 0.6e6 Pa
The low pressure setpoint is 0.6e6 Pa
W7(A) LATCH INDICATOR = l
Once the criteria is met, the trip is latched.
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
125 Is the RHS DP between the pressure header and RHS steam drum 2 < 0.6 MPa?
Manual ECCS actuation
The provision for a manual initiation of the long-term ECCS is provided with the following signal. The trip can be modified to a user-specified time to manually activate the ECCS.
126 and 132 A manual long-term ECCS signal will occur when time > 1.e6 s (e.g., never active)?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601260
W1(A) VARIABLE CODE = time
W2(I) PARAMETER = 0
W1(A) and W2(I) represent the current transient time
W3(A) RELATIONSHIP = gt
W4(A) VARIABLE CODE = null
W5(I) PARAMETER = 0
No comparison value is entered for the second variable
W6(R) ADDITIVE CONSTANT = 1.e6
This is an arbitrarily high user-specified time.
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
Card 20601320
This control variable is identical to control variable 20601260.
Time delay for diesel start-up
A 60 s delay is used until the diesels startup before long-term ECCS injection if there was a loss-of-offsite power.
127 Has 60 s passed since the loss-of-onsite power?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601270
W1(A) VARIABLE CODE = time
W2(I) PARAMETER = 0
W1(A) and W2(I) represent the current transient time
W3(A) RELATIONSHIP = ge
W4(A) VARIABLE CODE = timeof
W5(I) PARAMETER = 102
Trip 102 is the loss-of-offsite power.
W6(R) ADDITIVE CONSTANT = 6.e1
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
Termination of short-term ECCS
The short-term ECCS injection must be terminated prior to initiating long-term ECCS. The flowrate from the pressurized tanks to the MCC is monitored to assess when the short-term ECCS is over.
128 Has LHS short-term ECCS stopped injecting?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601280
W1(A) VARIABLE CODE = mflowj
W2(I) PARAMETER = 302000000
W3(A) RELATIONSHIP = lt
W4(A) VARIABLE CODE = null
W5(I) PARAMETER = 0
No comparison value is entered for the second variable
W6(R) ADDITIVE CONSTANT = 1.0
W7(A) LATCH INDICATOR = n
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
129 Has RHS short-term ECCS stopped injecting? (Note, only one RHS short-term ECCS path is monitored due to symmetry in the RHS flow injection.)
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601290
W1(A) VARIABLE CODE = mflowj
W2(I) PARAMETER = 322000000
W3(A) RELATIONSHIP = lt
W4(A) VARIABLE CODE = null
W5(I) PARAMETER = 0
No comparison value is entered for the second variable
W6(R) ADDITIVE CONSTANT = 1.0
W7(A) LATCH INDICATOR = n
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
Assessment of the Completion of the Group 1 Short-term ECCS Injection
1111 Is the LHS and the RHS short-term ECCS flow less than 1 kg/s? (An evaluation of whether the short-term ECCS has completed).
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611110
W1(A) TRIP NUMBER = 128
Low LHS short-term ECCS flow
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 129
Low RHS short-term ECCS flow
W4(A) LATCH INDICATOR = n
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1112 Is the LHS and RHS short-term ECCS flow less than 1 kg/s and the short-term ECCS signal occurred 5 s previously?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611120
W1(A) TRIP NUMBER = 1111
Low RHS and LHS short-term ECCS flow
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 113
5 s delay from the short-term ECCS signal
W4(A) LATCH INDICATOR = n
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1113 Is the LHS and RHS short-term ECCS flow less than 1 kg/s and the short-term ECCS signal occurred 5 s previously or there was no short-term ECCS signal?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611130
W1(A) TRIP NUMBER = 1112
Low RHS and LHS short-term ECCS flow
W2(A) OPERATOR = or
W3(A) TRIP NUMBER = -1110
No short-term ECCS signal
W4(A) LATCH INDICATOR = n
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1116 Are any of the steam drum low level signals active?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611160
W1(A) TRIP NUMBER = 120
LHS collapsed liquid level less than -1000 mm
W2(A) OPERATOR = or
W3(A) TRIP NUMBER = 121
RHS 1 collapsed liquid level less than -1000 mm
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1117 Are any of the steam drum low level signals or the short-term ECCS signal active?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611170
W1(A) TRIP NUMBER = 1116
Low level signals
W2(A) OPERATOR = or
W3(A) TRIP NUMBER = 1110
Short-term ECCS signal
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1118 Are the LHS or RHS 1 low pressure header to steam drum pressure signals active?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611180
W1(A) TRIP NUMBER = 123
LHS low differential pressure signal
W2(A) OPERATOR = or
W3(A) TRIP NUMBER = 124
RHS 1 low differential pressure signal
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1120 Is the low pressure header to steam drum pressure signal active and have the main feed pumps tripped? (Long-term ECCS is not required if the main feedwater pumps are available)
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611200
W1(A) TRIP NUMBER = 1118
LHS or RHS 1 low pressure header to steam drum pressure signals
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 1320
Main feedwater pump trip
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1121 Is there a low level signal or a low differential pressure signal and the main feedwater pumps are not available?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611210
W1(A) TRIP NUMBER = 1120
LHS and RHS low differential pressure signals and no main feedwater pumps
W2(A) OPERATOR = or
W3(A) TRIP NUMBER = 1117
LHS and RHS low steam drum level signal
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1122 If there was a loss of power, has the 60 s delay since the loss of power to the long-term ECCS pumps over? (This establishes the delay signal if the diesels must be started during a loss of power sequence).
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611220
W1(A) TRIP NUMBER = 102
Loss of offsite power signal
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 127
Loss of offsite power plus a 60 s delay
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1123 Is the 60 s delay since the loss of power to the long-term ECCS pumps over or there was not a loss of power signal? (If there is a loss of power, a 60 s is required. Otherwise, no delays is required to start the long-term ECCS pumps).
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611230
W1(A) TRIP NUMBER = 1122
There is a loss of offsite power and the 60 s delay has transpired
W2(A) OPERATOR = or
W3(A) TRIP NUMBER = -102
There is no loss of offsite power signal
W4(A) LATCH INDICATOR = n
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1224 Is there a long-term ECCS signal and have any time delays for loss-of power passed?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611240
W1(A) TRIP NUMBER = 1123
No loss-of-offsite power or the time delays have exceeded.
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 1121
Long-term ECCS signal
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1125 Is there a long-term ECCS signal (including diesel delays) or there is a manual signal?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611250
W1(A) TRIP NUMBER = 103
W2(A) OPERATOR = or
W3(A) TRIP NUMBER = 103
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1126 Is there a long-term ECCS signal (including diesel delays and termination of short-term ECCS) or a manual long-term ECCS signal and short-term ECCS has completed? This the trip used to initiate Long-term ECCS (e.g., time-dependent junctions 306, 326, 346, 406, 426, and 446).
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611260
W1(A) TRIP NUMBER = 101
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 126
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611320
W1(A) TRIP NUMBER = 101
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 132
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
Emergency Core Cooling System and Emergency Feedwater Pumps Actuation (Intact loop)
CARD 202TTT00, TABLE TYPE AND MULTIPLIER DATA
Card 20219000
W1(A) TABLE TYPE = reac-t 1126
react-t specifies a table type for massflow versus time.
CARD 202TTT01 THROUGH 202TTT99, GENERAL TABLE DATA
|
Card Number |
Time [s] |
Flow |
|
20219001 |
0.0 |
0.0 |
|
20219002 |
1.0 |
0.1 |
|
20219003 |
2.0 |
0.3 |
|
20219004 |
15.0 |
1.0 |
190 CV-190 = Pump start-up for the first hour
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20519000
W1(A) ALPHANUMERIC NAME = pmp_trp
W2(A) CONTROL COMPONENT TYPE = function
Specifies a function variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20519001
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = time 0
W3(I) GENERAL TABLE NUMBER = 190
General table 190 is read.
Emergency Core Cooling System and Emergency Feedwater Pumps Actuation (Accidental loop)
CARD 202TTT00, TABLE TYPE AND MULTIPLIER DATA
Card 20219700
W1(A) TABLE TYPE = reac-t 1132
react-t specifies a table type for massflow versus time.
CARD 202TTT01 THROUGH 202TTT99, GENERAL TABLE DATA
|
Card Number |
Time [s] |
Flow |
|
20219701 |
0.0 |
0.0 |
|
20219702 |
1.0 |
0.1 |
|
20219703 |
2.0 |
0.3 |
|
20219704 |
15.0 |
1.0 |
197 CV-197 = Pump start-up for the first hour
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20519700
W1(A) ALPHANUMERIC NAME = pmp_trp
W2(A) CONTROL COMPONENT TYPE = function
Specifies a function variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20519001
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = time 0
W3(I) GENERAL TABLE NUMBER = 197
General table 197 is read.
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20519100
W1(A) ALPHANUMERIC NAME = ECCS1
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20519101
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 139.0
Amount of water supplied by four pumps
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 190
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20519200
W1(A) ALPHANUMERIC NAME = ECCS2
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20519201
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 132.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 197
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20519300
W1(A) ALPHANUMERIC NAME = ECCS3
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20519301
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 7.0
Amount of water supplied to one GDH
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 197
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20519400
W1(A) ALPHANUMERIC NAME = ECCS4
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20519401
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 69.5
Amount of water supplied by two pumps
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 190
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20519500
W1(A) ALPHANUMERIC NAME = ECCS5
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20519501
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 66.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 197
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20519600
W1(A) ALPHANUMERIC NAME = ECCS6
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20519601
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 3.5
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 197
Emergency Core Cooling System valve logic
1182 Valve opening
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611820
W1(A) TRIP NUMBER = 101
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 101
W4(A) LATCH INDICATOR = n
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1183 Valve closing
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611830
W1(A) TRIP NUMBER = -1182
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = -1182
W4(A) LATCH INDICATOR = n
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
108 Erroneous Opening
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20601080
W1(A) VARIABLE CODE = time
W2(I) PARAMETER = 0
W1(A) and W2(I) represent the current transient time
W3(A) RELATIONSHIP = gt
W4(A) VARIABLE CODE = null
W5(I) PARAMETER = 0
W6(R) ADDITIVE CONSTANT = 1030.10
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1184 Valve opening
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611840
W1(A) TRIP NUMBER = 108
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 101
W4(A) LATCH INDICATOR = n
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1185 Valve closing
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611850
W1(A) TRIP NUMBER = 103
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 103
W4(A) LATCH INDICATOR = n
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1186 Valve opening
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611860
W1(A) TRIP NUMBER = 103
W2(A) OPERATOR = and
W3(A) TRIP NUMBER = 103
W4(A) LATCH INDICATOR = n
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1187 Valve closing
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20611850
This card identical to card 20611850
Accumulator Water Level
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20572500
W1(A) ALPHANUMERIC NAME = aclev
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a multiplier component. The feedwater flow is scaled according to W3, no multiplication is performed because only one variable request code is entered.
W3(R) SCALING FACTOR = 12.644
W4(R) INITIAL VALUE = 6.8
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20572501
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = voidf 320010000
Specifies the liquid void fraction.