(170) STEAM REMOVAL PIPING (LHS)
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1700000
W1(A) COMPONENT NAME = lstm_rmv
W2(A) COMPONENT TYPE = branch
CARD CCC0001, BRANCH INFORMATION
Card 1700001
W1(I) NUMBER OF JUNCTIONS = 1
W2(I) INITIAL CONDITION CONTROL FLAG = 0
Velocities will be assumed for the first and second words on card CCCN201.
CARD CCC0101 - CCC0109, BRANCH VOLUME GEOMETRY
Cards 1700101 and 1700102
W1(R) VOLUME FLOW AREA = 2.0702 m2
W2(R) LENGTH OF VOLUME = 0.0 m
W3(R) VOLUME OF VOLUME = 2.0702m3
W4(R) AZIMUTHAL ANGLE = 0.0
This value is not currently used by RELAP5.
W5(R) INCLINATION ANGLE = 45.0°
Indicates a inclined volume.
W6(R) ELEVATION CHANGE = 0.5 m
The elevation change is estimated to be half the estimated length of the steam removal pipes. The steam is removed from the top of the steam drums to the steam headers adjacent to the steam drums.
W7(R) WALL ROUGHNESS = 4.57e-5 m
Commercial steel surface (Ref. [ 3 ], p. 7-6).
W8(R) HYDRAULIC DIAMETER = 0.287 m
W9(I) VOLUME CONTROL FLAGS (pvbfe) = 01000
p = 0 The water packing scheme will be used.
v = 1 The vertical stratification model will not be used.
b = 0 The pipe interphase friction model will be applied.
f = 0 Wall friction effects will be computed.
e = 0 The nonequilibrium calculation will be used.
CARD CCC0200, BRANCH VOLUME INITIAL CONDITIONS
Card 1700200
W1(I) CONTROL WORD (e b t).
e This digit specifies the fluid
b This digit specifies the boron
t This digit specifies how the following words are to be used to determine the initial thermodynamic state, if t=0 the next four words are interpreted as pressure, liquid specific internal energy, vapor specific internal energy and vapor void fraction.
W2(R)-W6(R) QUANTITIES AS DESCRIBED UNDER WORD 1 (W1).
PRESSURE = 6690658.0 Pa
LIQUID SPECIFIC INTERNAL ENERGY = 1242439.0 J/kg
VAPOR SPECIFIC INTERNAL ENERGY = 2583014. 0 J/kg
VAPOR VOID FRACTION = 0.999976
CARD CCCN101, BRANCH JUNCTION GEOMETRY
Card 1701101
W1(I) FROM CONNECTION = 170010000
From the outlet side of this component.
W2(I) TO CONNECTION = 175000000
To the inlet side of the 4 steam lines.
W3(R) JUNCTION AREA = 1.06 m2
The flow area of the steam lines and the steam headers, see above.
W4(R) FORWARD FLOW ENERGY LOSS COEFFICIENT = 1.3
See calculations above.
W5(R) REVERSE FLOW ENERGY LOSS COEFFICIENT = 1.3
Reverse flow in the steam line is not expected. Use same loss coefficient as the forward direction.
W6(I) JUNCTION CONTROL FLAGS (fvcahs) = 000000
f = 0 The CCFL model will not be applied.
v = 0 The horizontal stratification model will not be applied.
c = 0 The choking model will be applied.
a = 0 The smooth area change option will be used.
h = 0 The nonhomogeneous option will be used.
s = 0 This is a normal junction.
CARD CCCN201, BRANCH JUNCTION INITIAL CONDITIONS
Card 1701201
W1(R) INITIAL LIQUID VELOCITY OR MASS FLOW = 25.79277 m/s
W2(R) INITIAL VAPOR VELOCITY OR MASS FLOW = 30.079 m/s
W3(R) INTERFACE VELOCITY = Enter 0 m/s.
(175) 4 STEAM LINES (LHS AND RHS)
Component 175 includes the piping of the four steam lines from the two steam drums.
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1750000
W1(A) COMPONENT NAME = fourstm
W2(A) COMPONENT TYPE = pipe
CARD CCC0001, PIPE INFORMATION
Card 1750001
W1(I) NUMBER OF VOLUMES = 3
CARD CCC0101 - CCC0199, PIPE VOLUME FLOW AREAS
Card 1750101
W1(R) VOLUME FLOW AREA = 1.06 m2
The flow area is based on 4 steam lines with an inner diameter of 0.580 m (Ref. [ 2 ], Chpt. 5).
W2(I) VOLUME NUMBER = 3
Applies to Volumes 1-3.
CARD CCC0201 - CCC0299, PIPE JUNCTION FLOW AREA
Card 1750201
W1(R) JUNCTION FLOW AREA = 1.06 m2
Uses the volume flow area.
W2(I) JUNCTION NUMBER = 2
Applies to Junctions 1-2
CARD CCC0301 - CCC0399, PIPE VOLUME LENGTHS
Card 1750301
W1(R) VOLUME LENGTH = 5.0 m
W2(I) VOLUME NUMBER = 1
Applies to first volume
Card 1750302
W1(R) VOLUME LENGTH = 22.5 m
W2(I) VOLUME NUMBER = 2
Applies to second volume
Card 1750303
W1(R) VOLUME LENGTH = 22.5 m
W2(I) VOLUME NUMBER = 25
Applies to third volume.
CARD CCC0401-CCC0499, PIPE VOLUME VOLUMES
Card 1750401
W1(R) VOLUME OF VOLUME = 0.0
This volume will be calculated by RELAP5 (V = A*L).
W2(I) VOLUME NUMBER = 3
Applies to Volumes 1-3.
CARD CCC0501-CCC0599, PIPE VOLUME HORIZONTAL ANGLES
Card 1750501
W1(R) AZIMUTHAL ANGLE = 0.0
W2(I) VOLUME NUMBER = 3
Applies to Volumes 1-3.
CARD CCC0601 - CCC0699, PIPE VOLUME VERTICAL ANGLES
Card 1750601
W1(R) INCLINATION ANGLE = 0°
W2(I) VOLUME NUMBER = 3
Applies to Volumes 1-3.
CARD CCC0701 - CCC0799, PIPE VOLUME ELEVATION CHANGES
Card 1750701
W1(R) ELEVATION CHANGE = 0.0
No elevation change is assumed.
W2(I) VOLUME NUMBER = 3
Applies to Volumes 1-3.
CARD CCC0801 - CCC0899, PIPE VOLUME FRICTION DATA
Card 1750801
W1(R) WALL ROUGHNESS = 4.57e-5 m
Commercial steel surface (Ref. [ 3 ], p. 7-6).
W2(R) HYDRAULIC DIAMETER = 0.580 m
The hydraulic area is a single pipe diameter.
W3(I) VOLUME NUMBER = 3
Applies to Volumes 1-3.
CARD CCC0901 - CCC0999, PIPE JUNCTION LOSS
Card 1750901
W1(R) FORWARD LOSS COEFFICIENT = 3.8745
W2(R) REVERSE LOSS COEFFICIENT = 3.8745
W3(I) JUNCTION NUMBER = 2
Applies to Junctions 1-2.
CARD CCC1001 - CCC1099, PIPE VOLUME CONTROL FLAGS
Card 1751001
W1(I) VOLUME CONTROL FLAGS (pvbfe) = 11000
p = 1 specifies that water packing scheme is not to be used.
v = 1 specifies that vertical stratification model is not to be used.
b = 0 means that pipe interphase friction model will be applied.
f = 0 specifies that wall friction effects are to be computed.
e = 0 specifies that nonequilibrium calculation is to be used.
W2(I) VOLUME NUMBER = 3
Applies to all volumes.
CARD CCC1101 - CCC1199, PIPE JUNCTION CONTROL FLAGS
Card 1751101
W1(I) JUNCTION CONTROL FLAGS (fvcahs) = 001000
f = 0 means CCFL model will not be applied.
v = 0 horizontal stratification model is not applied.
c = 1 choking model will not be applied.
a = 0 means a smooth area change.
h = 0 specifies the nonhomogeneous option.
s = 0 specifies a normal junction.
W2(I) JUNCTION NUMBER = 2
Applies to all junctions.
CARD CCC1201 - CCC1299, PIPE VOLUME INITIAL CONDITIONS
Cards 1751201-1751203
W1(I) CONTROL WORD (e b t).
e This digit specifies the fluid
b This digit specifies the boron
t This digit specifies how the following words are to be used to determine the initial thermodynamic state, if t=0 the next four words are interpreted as pressure, liquid specific internal energy, vapor specific internal energy and vapor void fraction. W6 should be 0.0.
W2(R)-W6(R) QUANTITIES AS DESCRIBED UNDER WORD 1 (W1).
PRESSURE = 6657126.0 Pa, 6591496.0 Pa, 6526636.0 Pa
LIQUID SPECIFIC INTERNAL ENERGY = 1240731.0 J/kg, 1237344.0 J/kg, 1233990.0 J/kg
VAPOR SPECIFIC INTERNAL ENERGY = 2583677. 0 J/kg, 2584681. 0 J/kg, 2585073. 0 J/kg
VAPOR VOID FRACTION = 0.999493, 0.999172, 0.998973
W7(I) VOLUME NUMBER = 1, 2, 3
CARD CCC1300, PIPE JUNCTION CONDITIONS CONTROL WORDS
Card 1751300
W1(I) CONTROL FLAG = 0
Velocities will be assumed for the first and second words on cards 1751301 through 1751302.
CARD CCC1301-CCC1399, PIPE JUNCTION INITIAL CONDITIONS
Cards 1751301-1751302
W1(R) INITIAL LIQUID VELOCITY OR MASS FLOW = 4.43669 m/s, 6.07295 m/s
W2(R) INITIAL VAPOR VELOCITY OR MASS FLOW = 30.24286 m/s, 30.54456 m/s
W3(R) INTERFACE VELOCITY = Enter 0 m/s.
W4(I) JUNCTION NUMBER = 1, 2
(176) JUNCTION BETWEEN LHS AND RHS STEAM LINES
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1760000
W1(A) COMPONENT NAME = steamjun
W2(A) COMPONENT TYPE = sngljun
CARD CCC0101 - CCC0109, SINGLE-JUNCTION GEOMETRY
Card 1760101
W1(I) FROM CONNECTION = 175010000
W2(I) TO CONNECTION = 575000000
W3(I) JUNCTION AREA = 0.30
W4(R) FORWARD FLOW ENERGY LOSS COEFFICIENT = 5.0
W5(R) REVERSE FLOW ENERGY LOSS COEFFICIENT = 5.0
W6(I) JUNCTION CONTROL FLAGS (fvcahs) = 001000
f = 0 The CCFL model will not be applied.
v = 0 The horizontal stratification option will not be used.
c = 1 The choking model will not be applied.
a = 0 The smooth area change option will be used.
h = 0 The nonhomogeneous option will be used.
s = 0 A normal junction will be used.
CARD CCC0201, SINGLE-JUNCTION INITIAL CONDITIONS
Card 1760201
W1(I) CONTROL WORD = 0
If 0, the next two words are velocities.
W2(R) INITIAL LIQUID VELOCITY OR MASS FLOW = -0.1019303 m/s
W3(R) INITIAL VAPOR VELOCITY OR MASS FLOW = -4.72299 m/s
W4(R) INTERFACE VELOCITY = Enter 0 m/s.
(180) THE FIRST GROUP OF MAIN SAFETY VALVES (MSV) (LHS)
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1800000
W1(A) COMPONENT NAME = lmsv1
W2(A) COMPONENT TYPE = valve
CARD CCC0101, VALVE JUNCTION GEOMETRY
Card 1800101
W1(I) FROM CONNECTION = 175020003
From the second cell of the four steam lines (assumed location).
W2(I) TO CONNECTION = 1810000000
To the ACS pressure boundary condition.
W3(R) JUNCTION AREA = 0.00863 m2
W4(R) FORWARD FLOW ENERGY LOSS COEFFICIENT = 0.0
The default abrupt loss model will be used.
W5(R) REVERSE FLOW ENERGY LOSS COEFFICIENT = 0.0
The default abrupt loss model will be used.
W6(I) JUNCTION CONTROL FLAGS (fvcahs) = 000100
f = 0 The CCFL model will not be applied.
v = 0 The horizontal stratification model will not be applied.
c = 0 The choking model will be applied.
a = 1 The abrupt area change option will be used.
h = 0 The nonhomogeneous option will be used.
s = 0 This is a normal junction.
CARD CCC0201, VALVE JUNCTION INITIAL CONDITIONS
Card 1800201
W1(I) CONTROL WORD = 0
If 0, the next two words are velocities.
W2(R) INITIAL LIQUID VELOCITY OR MASS FLOW = 0.0 m/s
W3(R) INITIAL VAPOR VELOCITY OR MASS FLOW = 0.0 m/s
W4(R) INTERFACE VELOCITY = Enter 0 m/s.
CARD CCC0300, VALVE TYPE CARD
Card 1800300
W1(I) VALVE TYPE = mtrvlv (motor valve)
CARD CCC0001, VALVE DATA AND INITIAL CONDITIONS
Card 1800301
W1(I) OPEN TRIP NUMBER = 1602
W2(I) CLOSE TRIP NUMBER = 1603
W3(R) VALVE CHANGE RATE = 2.0 s-1
W4(R) INITIAL POSITION = 0.0
(181) ACS SUPPRESSION POOL PRESSURE BOUNDARY CONDITION (LHS)
Component 181 simulates the steady state ACS boundary pressure. It is set to atmospheric conditions with the geometry specified to be identical to the Component 175.
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1810000
W1(A) COMPONENT NAME = lacspool
W2(A) COMPONENT TYPE = tmdpvol
CARD CCC0101 - CCC0109, TIME DEPENDENT VOLUME GEOMETRY
Cards 1810101 and 1810102
W1(R) VOLUME FLOW AREA = 1.06 m
See discussion for Component 175 above.
W2(R) LENGTH OF VOLUME = 15.3 m
See discussion for Component 175 above.
W3(R) VOLUME OF VOLUME = 0.0
The volume will be calculated by RELAP5 (V=L*A).
W4(R) AZIMUTHAL ANGLE = 0.0
This value is not currently used by RELAP5.
W5(R) INCLINATION ANGLE = 0
Indicates a horizontal volume.
W6(R) ELEVATION CHANGE = 0.0
Until addition information is obtained on the steam lines, it is assumed that the steam lines are horizonal.
W7(R) WALL ROUGHNESS = 4.57e-5 m
Arbitrary. No wall friction.
W8(R) HYDRAULIC DIAMETER = 0.58 m
Arbitrary. No wall friction.
W9(I) VOLUME CONTROL FLAGS (pvbfe) = 00010
p = 0 This digit is not used by RELAP5.
v = 0 This digit is not used by RELAP5.
b = 0 The pipe interphase friction model will not be applied.
f = 1 Wall friction effects will not be computed.
e = 0 The nonequilibrium calculation will be used.
CARD CCC0200, TIME DEPENDENT VOLUME DATA CONTROL WORD
Card 1810200
W1(I) CONTROL WORD (ebt) = 002
e = 0 The fluid is water.
b = 0 The volume does not contain boron.
t = 2 The second and third words in Card 1810201 are interpreted as pressure and quality at equilibrium conditions.
CARD CCC0201, TIME DEPENDENT VOLUME DATA CARDS
Card 1810201
W1(R) INDEPENDENT VARIABLE = 0.0
The independent variable is specified as time.
W2(R) DEPENDENT VARIABLE 1 = 1.0e5 Pa
This is the steady state turbine condenser pressure (Ref. [ 4 ], p. 6).
W3(R) DEPENDENT VARIABLE 2 = 1.0
Although the quality at the ACS suppression pool is not 1.0, backflow is not expected. Consequently, expect for the pressure the fluid properties of this component do not matter.
(184) THE SECOND GROUP OF MAIN SAFETY VALVES (MSV) (LHS)
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1840000
W1(A) COMPONENT NAME = lmsv2
W2(A) COMPONENT TYPE = valve
CARD CCC0101, VALVE JUNCTION GEOMETRY
Card 1840101
W1(I) FROM CONNECTION = 175020003
From the second cell of the four steam lines (assumed location).
W2(I) TO CONNECTION = 1850000000
To the ACS pressure boundary condition.
W3(R) JUNCTION AREA = 0.01726 m2
W4(R) FORWARD FLOW ENERGY LOSS COEFFICIENT = 0.0
The default abrupt loss model will be used.
W5(R) REVERSE FLOW ENERGY LOSS COEFFICIENT = 0.0
The default abrupt loss model will be used.
W6(I) JUNCTION CONTROL FLAGS (fvcahs) = 000100
f = 0 The CCFL model will not be applied.
v = 0 The horizontal stratification model will not be applied.
c = 0 The choking model will be applied.
a = 1 The abrupt area change option will be used.
h = 0 The nonhomogeneous option will be used.
s = 0 This is a normal junction.
CARD CCC0201, VALVE JUNCTION INITIAL CONDITIONS
Card 1840201
W1(I) CONTROL WORD = 0
If 0, the next two words are velocities.
W2(R) INITIAL LIQUID VELOCITY OR MASS FLOW = 0.0 m/s
W3(R) INITIAL VAPOR VELOCITY OR MASS FLOW = 0.0 m/s
W4(R) INTERFACE VELOCITY = Enter 0 m/s.
CARD CCC0300, VALVE TYPE CARD
Card 1840300
W1(I) VALVE TYPE = mtrvlv (motor valve)
CARD CCC0001, VALVE DATA AND INITIAL CONDITIONS
Card 1840301
W1(I) OPEN TRIP NUMBER = 1606
W2(I) CLOSE TRIP NUMBER = 1607
W3(R) VALVE CHANGE RATE = 2.0 s-1
W4(R) INITIAL POSITION = 0.0
(182) 4 STEAM DUMP VALVES (SDV-A) (LHS)
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1820000
W1(A) COMPONENT NAME = lsdv-a
W2(A) COMPONENT TYPE = valve
CARD CCC0101, VALVE JUNCTION GEOMETRY
Card 1820101
W1(I) FROM CONNECTION = 175020003
From the second cell of the four steam lines (assumed location).
W2(I) TO CONNECTION = 1830000000
To the turbine condenser pressure boundary condition.
W3(R) JUNCTION AREA = 0.00863 m2
The valve was sized in a separate effects RELAP5 critical flow simulation to give the rated flow conditions.
W4(R) FORWARD FLOW ENERGY LOSS COEFFICIENT = 0.0
The default abrupt loss model will be used.
W5(R) REVERSE FLOW ENERGY LOSS COEFFICIENT = 0.0
The default abrupt loss model will be used.
W6(I) JUNCTION CONTROL FLAGS (fvcahs) = 000100
f = 0 The CCFL model will not be applied.
v = 0 The horizontal stratification model will not be applied.
c = 0 The choking model will be applied.
a = 1 The abrupt area change option will be used.
h = 0 The nonhomogeneous option will be used.
s = 0 This is a normal junction.
CARD CCC0201, VALVE JUNCTION INITIAL CONDITIONS
Card 1820201
W1(I) CONTROL WORD = 0
If 0, the next two words are velocities.
W2(R) INITIAL LIQUID VELOCITY OR MASS FLOW = 0.0 m/s
W3(R) INITIAL VAPOR VELOCITY OR MASS FLOW = 0.0 m/s
W4(R) INTERFACE VELOCITY = Enter 0 m/s.
CARD CCC0300, VALVE TYPE CARD
Card 1820300
W1(I) VALVE TYPE = mtrvlv (motor valve)
CARD CCC0001, VALVE DATA AND INITIAL CONDITIONS
Card 1820301
W1(I) OPEN TRIP NUMBER = 1621
W2(I) CLOSE TRIP NUMBER = 1622
W3(R) VALVE CHANGE RATE = 0.1
The valve is specified to take 10 seconds to open (Ref. [ 7 ], Chpt. 5).
W4(R) INITIAL VALVE POSITION = 0.0
The valve is initially closed.
W5(I) VALVE TABLE NUMBER = Not entered.
(183) ACS SUPPRESSION POOL PRESSURE BOUNDARY CONDITION (LHS)
Component 183 simulates the steady state ACS boundary pressure. It is set to atmospheric conditions with the geometry specified to be identical to the Component 175.
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1830000
W1(A) COMPONENT NAME = lacspool
W2(A) COMPONENT TYPE = tmdpvol
CARD CCC0101 - CCC0109, TIME DEPENDENT VOLUME GEOMETRY
Cards 1830101 and 1830102
W1(R) VOLUME FLOW AREA = 1.06 m
See discussion for Component 175 above.
W2(R) LENGTH OF VOLUME = 15.3 m
See discussion for Component 175 above.
W3(R) VOLUME OF VOLUME = 0.0
The volume will be calculated by RELAP5 (V=L*A).
W4(R) AZIMUTHAL ANGLE = 0.0
This value is not currently used by RELAP5.
W5(R) INCLINATION ANGLE = 0o
Indicates a horizontal volume.
W6(R) ELEVATION CHANGE = 0.0
Until addition information is obtained on the steam lines, it is assumed that the steam lines are horizonal.
W7(R) WALL ROUGHNESS = 4.57e-5 m
Arbitrary. No wall friction.
W8(R) HYDRAULIC DIAMETER = 0.58 m
Arbitrary. No wall friction.
W9(I) VOLUME CONTROL FLAGS (pvbfe) = 00010
p = 0 This digit is not used by RELAP5.
v = 0 This digit is not used by RELAP5.
b = 0 The pipe interphase friction model will not be applied.
f = 1 Wall friction effects will not be computed.
e = 0 The nonequilibrium calculation will be used.
CARD CCC0200, TIME DEPENDENT VOLUME DATA CONTROL WORD
Card 1830200
W1(I) CONTROL WORD (e bt) = 002
e = 0 The fluid is water.
b = 0 The volume does not contain boron.
t = 2 The second and third words in Card 1830201 are interpreted as pressure and quality at equilibrium conditions.
CARD CCC0201, TIME DEPENDENT VOLUME DATA CARDS
Card 1830201
W1(R) INDEPENDENT VARIABLE = 0.0
The independent variable is specified as time.
W2(R) DEPENDENT VARIABLE 1 = 1.0e5 Pa
This is the steady state turbine condenser pressure (Ref. [ 2 ], p. 6).
W3(R) DEPENDENT VARIABLE 2 = 1.0
Although the quality at the ACS suppression pool is not 1, backflow is not expected. Consequently, expect for the pressure the fluid properties of this component do not matter.
(185) ACS SUPPRESSION POOL PRESSURE BOUNDARY CONDITION (LHS)
Component 185 simulates the steady state ACS boundary pressure. It is set to atmospheric conditions with the geometry specified to be identical to the Component 175.
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1850000
W1(A) COMPONENT NAME = lacspool
W2(A) COMPONENT TYPE = tmdpvol
CARD CCC0101 - CCC0109, TIME DEPENDENT VOLUME GEOMETRY
Cards 1850101 and 1850102
W1(R) VOLUME FLOW AREA = 1.06 m
See discussion for Component 175 above.
W2(R) LENGTH OF VOLUME = 15.3 m
See discussion for Component 175 above.
W3(R) VOLUME OF VOLUME = 0.0
The volume will be calculated by RELAP5 (V=L*A).
W4(R) AZIMUTHAL ANGLE = 0.0
This value is not currently used by RELAP5.
W5(R) INCLINATION ANGLE = 0o
Indicates a horizontal volume.
W6(R) ELEVATION CHANGE = 0.0
Until addition information is obtained on the steam lines, it is assumed that the steam lines are horizonal.
W7(R) WALL ROUGHNESS = 4.57e-5 m
Arbitrary. No wall friction.
W8(R) HYDRAULIC DIAMETER = 0.58 m
Arbitrary. No wall friction.
W9(I) VOLUME CONTROL FLAGS (pvbfe) = 00010
p = 0 This digit is not used by RELAP5.
v = 0 This digit is not used by RELAP5.
b = 0 The pipe interphase friction model will not be applied.
f = 1 Wall friction effects will not be computed.
e = 0 The nonequilibrium calculation will be used.
CARD CCC0200, TIME DEPENDENT VOLUME DATA CONTROL WORD
Card 1850200
W1(I) CONTROL WORD (e bt) = 002
e = 0 The fluid is water.
b = 0 The volume does not contain boron.
t = 2 The second and third words in Card 1850201 are interpreted as pressure and quality at equilibrium conditions.
CARD CCC0201, TIME DEPENDENT VOLUME DATA CARDS
Card 1850201
W1(R) INDEPENDENT VARIABLE = 0.0
The independent variable is specified as time.
W2(R) DEPENDENT VARIABLE 1 = 1.0e5 Pa
This is the steady state turbine condenser pressure (Ref. [ 2 ], p. 6).
W3(R) DEPENDENT VARIABLE 2 = 1.0
Although the quality at the ACS suppression pool is not 1, backflow is not expected. Consequently, expect for the pressure the fluid properties of this component do not matter.
(186) THE THIRD GROUP OF MAIN SAFETY VALVES (MSV) (LHS)
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1860000
W1(A) COMPONENT NAME = lmsv3
W2(A) COMPONENT TYPE = valve
CARD CCC0101, VALVE JUNCTION GEOMETRY
Card 1860101
W1(I) FROM CONNECTION = 175020003
From the second cell of the four steam lines (assumed location).
W2(I) TO CONNECTION = 1870000000
To the ACS pressure boundary condition.
W3(R) JUNCTION AREA = 0.02589 m2
W4(R) FORWARD FLOW ENERGY LOSS COEFFICIENT = 0.0
The default abrupt loss model will be used.
W5(R) REVERSE FLOW ENERGY LOSS COEFFICIENT = 0.0
The default abrupt loss model will be used.
W6(I) JUNCTION CONTROL FLAGS (fvcahs) = 000100
f = 0 The CCFL model will not be applied.
v = 0 The horizontal stratification model will not be applied.
c = 0 The choking model will be applied.
a = 1 The abrupt area change option will be used.
h = 0 The nonhomogeneous option will be used.
s = 0 This is a normal junction.
CARD CCC0201, VALVE JUNCTION INITIAL CONDITIONS
Card 1860201
W1(I) CONTROL WORD = 0
If 0, the next two words are velocities.
W2(R) INITIAL LIQUID VELOCITY OR MASS FLOW = 0.0 m/s
W3(R) INITIAL VAPOR VELOCITY OR MASS FLOW = 0.0 m/s
W4(R) INTERFACE VELOCITY = Enter 0 m/s.
CARD CCC0300, VALVE TYPE CARD
Card 1860300
W1(I) VALVE TYPE = mtrvlv (motor valve)
CARD CCC0001, VALVE DATA AND INITIAL CONDITIONS
Card 1860301
W1(I) OPEN TRIP NUMBER = 801
W2(I) CLOSE TRIP NUMBER = 802
W3(R) VALVE CHANGE RATE = 2.0 s-1
W4(R) INITIAL POSITION = 0.0
(187) ACS SUPPRESSION POOL PRESSURE BOUNDARY CONDITION (LHS)
Component 187 simulates the steady state ACS boundary pressure. It is set to atmospheric conditions with the geometry specified to be identical to the Component 175.
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1870000
W1(A) COMPONENT NAME = lacspool
W2(A) COMPONENT TYPE = tmdpvol
CARD CCC0101 - CCC0109, TIME DEPENDENT VOLUME GEOMETRY
Cards 1870101 and 1870102
W1(R) VOLUME FLOW AREA = 1.06 m
See discussion for Component 175 above.
W2(R) LENGTH OF VOLUME = 15.3 m
See discussion for Component 175 above.
W3(R) VOLUME OF VOLUME = 0.0
The volume will be calculated by RELAP5 (V=L*A).
W4(R) AZIMUTHAL ANGLE = 0.0
This value is not currently used by RELAP5.
W5(R) INCLINATION ANGLE = 0o
Indicates a horizontal volume.
W6(R) ELEVATION CHANGE = 0.0
Until addition information is obtained on the steam lines, it is assumed that the steam lines are horizonal.
W7(R) WALL ROUGHNESS = 4.57e-5 m
Arbitrary. No wall friction.
W8(R) HYDRAULIC DIAMETER = 0.58 m
Arbitrary. No wall friction.
W9(I) VOLUME CONTROL FLAGS (pvbfe) = 00010
p = 0 This digit is not used by RELAP5.
v = 0 This digit is not used by RELAP5.
b = 0 The pipe interphase friction model will not be applied.
f = 1 Wall friction effects will not be computed.
e = 0 The nonequilibrium calculation will be used.
CARD CCC0200, TIME DEPENDENT VOLUME DATA CONTROL WORD
Card 1870200
W1(I) CONTROL WORD (e bt) = 002
e = 0 The fluid is water.
b = 0 The volume does not contain boron.
t = 2 The second and third words in Card 1870201 are interpreted as pressure and quality at equilibrium conditions.
CARD CCC0201, TIME DEPENDENT VOLUME DATA CARDS
Card 1870201
W1(R) INDEPENDENT VARIABLE = 0.0
The independent variable is specified as time.
W2(R) DEPENDENT VARIABLE 1 = 1.0e5 Pa
This is the steady state turbine condenser pressure (Ref. [ 2 ], p. 6).
W3(R) DEPENDENT VARIABLE 2 = 1.0
Although the quality at the ACS suppression pool is not 1, backflow is not expected. Consequently, expect for the pressure the fluid properties of this component do not matter.
(190) 4 STEAM DUMP VALVES (SDV-C) (LHS)
Valve Component 190 includes 4 of the 8 steam dump valves (SDV-C type) that discharge into the condensor. These valves provide relief flow to protect the reactor from over-pressurization. These valves are designed to open before the SDV-A and MSVs
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1900000
W1(A) COMPONENT NAME = lsdv-c
W2(A) COMPONENT TYPE = valve
CARD CCC0101, VALVE JUNCTION GEOMETRY
Card 1900101
W1(I) FROM CONNECTION = 175030003
From the third cell of the steam line (assumed location).
W2(I) TO CONNECTION = 1910000000
To the turbine condenser pressure boundary condition.
W3(R) JUNCTION AREA = 0.0544 m2
The valve was sized in a separate effects RELAP5 critical flow simulation to give the rated flow conditions.
W4(R) FORWARD FLOW ENERGY LOSS COEFFICIENT = 0.0
The default abrupt loss model will be used.
W5(R) REVERSE FLOW ENERGY LOSS COEFFICIENT = 0.0
The default abrupt loss model will be used.
W6(I) JUNCTION CONTROL FLAGS (fvcahs) = 000100
f = 0 The CCFL model will not be applied.
v = 0 The horizontal stratification model will not be applied.
c = 0 The choking model will be applied.
a = 1 The abrupt area change option will be used.
h = 0 The nonhomogeneous option will be used.
s = 0 This is a normal junction.
CARD CCC0201, VALVE JUNCTION INITIAL CONDITIONS
Card 1900201
W1(I) CONTROL WORD = 0
If 0, the next two words are velocities.
W2(R) INITIAL LIQUID VELOCITY OR MASS FLOW = 0.0 m/s
W3(R) INITIAL VAPOR VELOCITY OR MASS FLOW = 0.0 m/s
W4(R) INTERFACE VELOCITY = Enter 0 m/s.
CARD CCC0300, VALVE TYPE CARD
Card 1900300
W1(I) VALVE TYPE = mtrvlv (motor valve)
CARD CCC0001, VALVE DATA AND INITIAL CONDITIONS
Card 1900301
W1(I) OPEN TRIP NUMBER = 1631
W2(I) CLOSE TRIP NUMBER = 1632
W3(R) VALVE CHANGE RATE = 0.1
The valve is specified to take 10 seconds to open (Ref. [ 7 ], Chpt. 5)
W4(R) INITIAL VALVE POSITION = 0.0
The valve is initially closed.
W5(I) VALVE TABLE NUMBER = Not entered.
(191) TURBINE CONDENSER BOUNDARY CONDITION (LHS)
Component 191 simulates the condensor inlet boundary pressure. From Ref. [ 4 ], p. 6, the condenser pressure is specified to be 4.4 kPa. The geometry for this component will be specified to be identical to the Component 175.
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1910000
W1(A) COMPONENT NAME = lcondensr
W2(A) COMPONENT TYPE = tmdpvol
CARD CCC0101 - CCC0109, TIME DEPENDENT VOLUME GEOMETRY
Cards 1910101 and 1910102
W1(R) VOLUME FLOW AREA = 1.06 m2
See discussion for Component 175 above.
W2(R) LENGTH OF VOLUME = 15.3 m
See discussion for Component 175 above.
W3(R) VOLUME OF VOLUME = 0.0
The volume will be calculated by RELAP5 (V=L*A).
W4(R) AZIMUTHAL ANGLE = 0.0
This value is not currently used by RELAP5.
W5(R) INCLINATION ANGLE = 0o
Indicates a horizontal volume.
W6(R) ELEVATION CHANGE = 0.0
Arbitrary.
W7(R) WALL ROUGHNESS = 4.57e-5 m
Arbitrary. No wall friction.
W8(R) HYDRAULIC DIAMETER = 0.58 m
Arbitrary. No wall friction.
W9(I) VOLUME CONTROL FLAGS (pvbfe) = 00010
p = 0 This digit is not used by RELAP5.
v = 0 This digit is not used by RELAP5.
b = 0 The pipe interphase friction model will not be applied.
f = 1 Wall friction effects will not be computed.
e = 0 The nonequilibrium calculation will be used.
CARD CCC0200, TIME DEPENDENT VOLUME DATA CONTROL WORD
Card 1910200
W1(I) CONTROL WORD (e bt) = 002
e = 0 The fluid is water.
b = 0 The volume does not contain boron.
t = 2 The second and third words in Card 1910201 are interpreted as pressure and quality at equilibrium conditions.
CARD CCC0201, TIME DEPENDENT VOLUME DATA CARDS
Card 1910201
W1(R) INDEPENDENT VARIABLE = 0.0
The independent variable is specified as time.
W2(R) DEPENDENT VARIABLE 1 = 4.4e3 Pa
This is the steady state turbine condenser pressure (Ref. [ 2 ], Chpt. 5)
W3(R) DEPENDENT VARIABLE 2 = 1.0
Although the quality at the turbine condenser is not 1, backflow is not expected. Consequently, expect for the pressure the fluid properties of this component do not matter.
(194) STEAM LINES TO TURBINE CONTROL VALVE (TCV) (LHS)
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1940000
W1(A) COMPONENT NAME = lstm_rmv
W2(A) COMPONENT TYPE = branch
CARD CCC0001, BRANCH INFORMATION
Card 1940001
W1(I) NUMBER OF JUNCTIONS = 1
W2(I) INITIAL CONDITION CONTROL FLAG = 0
Velocities will be assumed for the first and second words on card CCCN201.
CARD CCC0101 - CCC0109, BRANCH VOLUME GEOMETRY
Cards 1940101 and 1940102
W1(R) VOLUME FLOW AREA = 2.262 m2
W2(R) LENGTH OF VOLUME = 0.0 m
W3(R) VOLUME OF VOLUME = 137.07 m3
W4(R) AZIMUTHAL ANGLE = 0.0
This value is not currently used by RELAP5.
W5(R) INCLINATION ANGLE = 0.0°
W6(R) ELEVATION CHANGE = 0.0 m
W7(R) WALL ROUGHNESS = 4.57e-5 m
Commercial steel surface (Ref. [ 3 ], p. 7-6).
W8(R) HYDRAULIC DIAMETER = 0.6 m
W9(I) VOLUME CONTROL FLAGS (pvbfe) = 01000
p = 0 The water packing scheme will be used.
v = 1 The vertical stratification model will not be used.
b = 0 The pipe interphase friction model will be applied.
f = 0 Wall friction effects will be computed.
e = 0 The nonequilibrium calculation will be used.
CARD CCC0200, BRANCH VOLUME INITIAL CONDITIONS
Card 1940200
W1(I) CONTROL WORD (e b t).
e This digit specifies the fluid
b This digit specifies the boron
t This digit specifies how the following words are to be used to determine the initial thermodynamic state, if t=0 the next four words are interpreted as pressure, liquid specific internal energy, vapor specific internal energy and vapor void fraction.
W2(R)-W6(R) QUANTITIES AS DESCRIBED UNDER WORD 1 (W1).
PRESSURE = 6514175.0 Pa
LIQUID SPECIFIC INTERNAL ENERGY = 1233358.0 J/kg
VAPOR SPECIFIC INTERNAL ENERGY = 2585532. 0 J/kg
VAPOR VOID FRACTION = 0.999399
CARD CCCN101, BRANCH JUNCTION GEOMETRY
Card 1941101
W1(I) FROM CONNECTION = 175030003
From the outlet side of this component.
W2(I) TO CONNECTION = 194000000
To the inlet side of the 4 steam lines.
W3(R) JUNCTION AREA = 1.06 m2
The flow area of the steam lines and the steam headers, see above.
W4(R) FORWARD FLOW ENERGY LOSS COEFFICIENT = 0.5
W5(R) REVERSE FLOW ENERGY LOSS COEFFICIENT = 0.5
Reverse flow in the steam line is not expected. Use same loss coefficient as the forward direction.
W6(I) JUNCTION CONTROL FLAGS (fvcahs) = 000000
f = 0 The CCFL model will not be applied.
v = 0 The horizontal stratification model will not be applied.
c = 0 The choking model will be applied.
a = 0 The smooth area change option will be used.
h = 0 The nonhomogeneous option will be used.
s = 0 This is a normal junction.
CARD CCCN201, BRANCH JUNCTION INITIAL CONDITIONS
Card 1941201
W1(R) INITIAL LIQUID VELOCITY OR MASS FLOW = 6.99779 m/s
W2(R) INITIAL VAPOR VELOCITY OR MASS FLOW = 29.4884 m/s
W3(R) INTERFACE VELOCITY = Enter 0 m/s.
(195) 4 TURBINE CONTROL VALVES (LHS)
Component 195 simulates the LHS turbine control valve.
A = (4 steam lines)p(0.580 m)2/4 = 1.06 m2
A steady state pressure controller will regulate the valve opening area to achieve the desired system pressure. The valve type will be specified as a servo valve.
The flow resistance through this component due to the flow contraction will be specified with the default abrupt area loss model in RELAP5.
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1950000
W1(A) COMPONENT NAME = ltcv
W2(A) COMPONENT TYPE = valve
CARD CCC0101, VALVE JUNCTION GEOMETRY
Card 1950101
W1(I) FROM CONNECTION = 194010000
From the outlet side of the four steam lines.
W2(I) TO CONNECTION = 196000000
To the inlet side of the turbine pressure boundary condition.
W3(R) JUNCTION AREA = 1.06 m2
The diameter of a steam line is 630 mm (Ref. [ 4 ], p. 37).
W4(R) FORWARD FLOW ENERGY LOSS COEFFICIENT = 0.0
A CSUBV table will be used.
W5(R) REVERSE FLOW ENERGY LOSS COEFFICIENT = 0.0
A CSUBV table will be used.
W6(I) JUNCTION CONTROL FLAGS (fvcahs) = 001000
f = 0 The CCFL model will not be applied.
v = 0 The horizontal stratification model will not be applied.
c = 1 The choking model will not be applied.
a = 0 The abrupt area change option will not be used.
h = 0 The nonhomogeneous option will be used.
s = 0 This is a normal junction.
CARD CCC0201, VALVE JUNCTION INITIAL CONDITIONS
Card 1950201
W1(I) CONTROL WORD = 0
If 0, the next two words are velocities.
W2(R) INITIAL LIQUID VELOCITY OR MASS FLOW = 13.19456 m/s
W3(R) INITIAL VAPOR VELOCITY OR MASS FLOW = 29.5357 m/s
W4(R) INTERFACE VELOCITY = Enter 0 m/s.
CARD CCC0300, VALVE TYPE CARD
Card 1950300
W1(I) VALVE TYPE = srvvlv (servo valve)
CARD CCC0001, VALVE DATA AND INITIAL CONDITIONS
Card 1950301
W1(I) SERVO VALVE CONTROL VARIABLE NUMBER = 317
W2(I) SERVO VALVE TABLE NUMBER = Not entered.
An additional specification of valve area versus stem position is not specified.
CARD CCC0001, VALVE CSUBV TABLE
Card 1950401
A CSUBV (Cv) table is added so that the no choking option can be used. In this manner, the pressure in the steam line can fall smoothly until the low pressure trip that signals to close the turbine control valves is reached. The CSUBV values were specified to give approximately a 50% opening for normal flow conditions.
W1(R) STEM POSITION = 0.0
W2(R) FORWARD CSUBV = 0.0
W3(R) REVERSE CSUBV = 0.0
Card 1950402
W1(R) STEM POSITION = 0.5
W2(R) FORWARD CSUBV = 7.0e3
W3(R) REVERSE CSUBV = 7.0e3
Card 1950403
W1(R) STEM POSITION = 1.0
W2(R) FORWARD CSUBV = 1.4e4
W3(R) REVERSE CSUBV = 1.4e4
(196) TURBINE BOUNDARY CONDITION (LHS)
Component 196 simulates the steady state turbine inlet boundary pressure. From Ref. [ 4 ], p. 6, the turbine inlet pressure is specified to be 5.0 MPa. The geometry for this component will be specified to be identical to the Component 196.
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1960000
W1(A) COMPONENT NAME = lturbine
W2(A) COMPONENT TYPE = tmdpvol
CARD CCC0101 - CCC0109, TIME DEPENDENT VOLUME GEOMETRY
Cards 1960101 and 1960102
W1(R) VOLUME FLOW AREA = 1.06 m
Arbitrary. Steam line flow area.
W2(R) LENGTH OF VOLUME = 11.3 m
Arbitrary. Upstream cell length.
W3(R) VOLUME OF VOLUME = 0.0
The volume will be calculated by RELAP5 (V=L*A).
W4(R) AZIMUTHAL ANGLE = 0.0
This value is not currently used by RELAP5.
W5(R) INCLINATION ANGLE = 0.0
Indicates a horizontal volume.
W6(R) ELEVATION CHANGE = 0.0
Arbitrary specification for the boundary condition.
W7(R) WALL ROUGHNESS = 4.57e-5 m
Arbitrary. Wall friction is not calculated.
W8(R) HYDRAULIC DIAMETER = 0.58 m
Arbitrary. Wall friction is not calculated.
W9(I) VOLUME CONTROL FLAGS (pvbfe) = 00010
p = 0 This digit is not used by RELAP5.
v = 0 This digit is not used by RELAP5.
b = 0 The pipe interphase friction model will not be applied.
f = 1 Wall friction effects will not be computed.
e = 0 The nonequilibrium calculation will be used.
CARD CCC0200, TIME DEPENDENT VOLUME DATA CONTROL WORD
Card 1960200
W1(I) CONTROL WORD (e bt) = 002
e = 0 The fluid is water.
b = 0 The volume does not contain boron.
t = 2 The second and third words in Card 1960201 are interpreted as pressure and quality at equilibrium conditions.
CARD CCC0201, TIME DEPENDENT VOLUME DATA CARDS
Card 1960201
W1(R) INDEPENDENT VARIABLE = 0.0
The independent variable is specified as time.
W2(R) DEPENDENT VARIABLE 1 = 5.0e6 Pa
This is 0.5 MPa below the trip pressure for the turbine control valves (Ref. [ 2 ], Chpt. 5).
W3(R) DEPENDENT VARIABLE 2 = 1.0
The quality at the turbine inlet is approximately 1. Backflow is not expected. Consequently, expect for the pressure the fluid properties of this component do not matter.
(197) STEAM DUMP VALVE-D (SDV-D)
Component 197 simulates the SDV-D behavior for local steam requirements.
A = (4 steam lines)p(0.580 m)2/4 = 1.06 m2
A CSUBV table is used to get the desired flow out the SDV-D valve. The valve type will be specified as a motor valve.
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1970000
W1(A) COMPONENT NAME = sdv-d
W2(A) COMPONENT TYPE = valve
CARD CCC0101, VALVE JUNCTION GEOMETRY
Card 1970101
W1(I) FROM CONNECTION = 175030003
W2(I) TO CONNECTION = 198000000
To the inlet side of a pressure boundary condition.
W3(R) JUNCTION AREA = 1.06 m2
W4(R) FORWARD FLOW ENERGY LOSS COEFFICIENT = 0.0
A CSUBV table will be used.
W5(R) REVERSE FLOW ENERGY LOSS COEFFICIENT = 0.0
A CSUBV table will be used.
W6(I) JUNCTION CONTROL FLAGS (fvcahs) = 001000
f = 0 The CCFL model will not be applied.
v = 0 The horizontal stratification model will not be applied.
c = 1 The choking model will not be applied.
a = 0 The abrupt area change option will not be used.
h = 0 The nonhomogeneous option will be used.
s = 0 This is a normal junction.
CARD CCC0201, VALVE JUNCTION INITIAL CONDITIONS
Card 1970201
W1(I) CONTROL WORD = 0
If 0, the next two words are velocities.
W2(R) INITIAL LIQUID VELOCITY OR MASS FLOW = 8.0348998e-01 m/s
W3(R) INITIAL VAPOR VELOCITY OR MASS FLOW = 3.8125999e+00 m/s
W4(R) INTERFACE VELOCITY = Enter 0 m/s.
CARD CCC0300, VALVE TYPE CARD
Card 1970300
W1(I) VALVE TYPE = motor (motor valve)
CARD CCC0001, VALVE DATA AND INITIAL CONDITIONS
Card 1970301
W1(I) MOTOR VALVE OPEN TRIP = 103
Always false trip (no signals will be modeled to re-open the SDV-D)
W2(I) MOTOR VALVE CLOSE TRIP = 109
W3(R) VALVE CHANGE RATE = 2.50
W4(R) INITIAL VALVE POSITION = 1.0
The valve is initially open.
W5(I) VALVE TABLE NUMBER = Not entered.
CARD CCC0001, VALVE CSUBV TABLE
Card 1970401
A CSUBV (Cv) table is added so that the no choking option can be used. It is not likely that the flow is choked at the SDV-D. The CSUBV values were specified to give approximately a 138.9 kg/s at full pressure (plant data enclosed in the Attachment).
W1(R) STEM POSITION = 0.0
W2(R) FORWARD CSUBV = 0.0
W3(R) REVERSE CSUBV = 0.0
Card 1970402
W1(R) STEM POSITION = 1.0
W2(R) FORWARD CSUBV = 0.23e3
W3(R) REVERSE CSUBV = 0.23e3
(198) SDV-D PRESSURE BOUNDARY CONDITION
Component 198 simulates the steady state boundary pressure for the SDV-D. It is specified to be the same as the turbine inlet pressure (see Component 196).
CARD CCC0000, COMPONENT NAME AND TYPE
Card 1980000
W1(A) COMPONENT NAME = sdv-d
W2(A) COMPONENT TYPE = tmdpvol
CARD CCC0101 - CCC0109, TIME DEPENDENT VOLUME GEOMETRY
Cards 1980101 and 1980102
W1(R) VOLUME FLOW AREA = 1.06 m
Arbitrary. Steam line flow area.
W2(R) LENGTH OF VOLUME = 11.3 m
Arbitrary. Upstream cell length.
W3(R) VOLUME OF VOLUME = 0.0
The volume will be calculated by RELAP5 (V=L*A).
W4(R) AZIMUTHAL ANGLE = 0.0
This value is not currently used by RELAP5.
W5(R) INCLINATION ANGLE = 0.0
Indicates a horizontal volume.
W6(R) ELEVATION CHANGE = 0.0
Arbitrary specification for the boundary condition.
W7(R) WALL ROUGHNESS = 4.57e-5 m
Arbitrary. Wall friction is not calculated.
W8(R) HYDRAULIC DIAMETER = 0.58 m
Arbitrary. Wall friction is not calculated.
W9(I) VOLUME CONTROL FLAGS (pvbfe) = 00010
p = 0 This digit is not used by RELAP5.
v = 0 This digit is not used by RELAP5.
b = 0 The pipe interphase friction model will not be applied.
f = 1 Wall friction effects will not be computed.
e = 0 The nonequilibrium calculation will be used.
CARD CCC0200, TIME DEPENDENT VOLUME DATA CONTROL WORD
Card 1980200
W1(I) CONTROL WORD (e bt) = 002
e = 0 The fluid is water.
b = 0 The volume does not contain boron.
t = 2 The second and third words in Card 1960201 are interpreted as pressure and quality at equilibrium conditions.
CARD CCC0201, TIME DEPENDENT VOLUME DATA CARDS
Card 1980201
W1(R) INDEPENDENT VARIABLE = 0.0
The independent variable is specified as time.
W2(R) DEPENDENT VARIABLE 1 = 5.0e6 Pa
This is 0.5 MPa below the trip pressure for the turbine control valves (Ref. [ 2 ], Chpt. 5).
W3(R) DEPENDENT VARIABLE 2 = 1.0
The quality at the turbine inlet is approximately 1. Backflow is not expected. Consequently, expect for the pressure the fluid properties of this component do not matter.