Válvulas de Seguridad-A
50
CLIENTE: XXX PROYECTO: RRR HOJA DE CÁLCULO VÁLVULAS DE SEGURIDAD A 10-dic-07 EMISIÓN PARA APROBACIÓN DFF/MIR APD BUE-100000-R-XX-001 Rev.: A
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Calculo Valvulas de Seguridad
Transcript of Válvulas de Seguridad-A
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CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULO
VÁLVULAS DE SEGURIDAD
A 10-dic-07 EMISIÓN PARA APROBACIÓN DFF/MIR APD APD
BUE-100000-R-XX-001 Rev.: A
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REV. FECHA DESCRIPCIÓN POR REVISÓ APROBÓ
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULOGAS RELIEF VALVE SIZING
Service Description Distribución de Aire de Instrumentos
REQUIRED AREA SIZE (API 520)Set Pressure Ps barg 9.80Overpressure % 10Upstream Relieving Pressure barg 10.78Back Pressure barg 0Required Relief Flow W kg/h 260Molecular Weight M 29Relieving Temperature @ Inlet T °C 40Compressibility Factor @ Inlet Z 1.00Specific Heats Ratio (Cp/Cv) k 1.42Percent of Gauge Back Pressure Pb/Ps % 0.0Coefficient C Fig. 32 358Capacity Correction Factor Kb Fig. 30 1.00Combination Correction Factor Kc 1Discharge Coefficient Kd 0.975Critical Flow Pressure Pcf barg 5.18Gas Flow Type CriticalBack to Upstream Pressure Ratio r 0.086Subcritical Flow coefficient Fig. 34 -Required Effective Discharge Area A in² 0.042
VALVE & ORIFICE SIZE (API 526)Valves Quantity 1Required Effective Discharge Area 0.042Minimum Orifice DOrifice Selected MinimumDischarge Area in² 0.110Rating / Required 2.595Valve Size 1x2Rating in/out 150 # 150Type of Valve Conventional
P1
Pb, P2
P2/P1
F2
M12
Fire 21% Other 10%
M14
From disposal system
M38
Select as per API 526
K40
Conventional (Pb/Ps<10%) Balanced (Pb/Ps<30%) Pilot Operated (Pb/Ps<50%)
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULOGAS RELIEF VALVE SIZING
Service Description
REQUIRED AREA SIZE (API 520) Gas 1 Gas 2Set Pressure Ps barg 5.17 5.17Overpressure % 10 10Upstream Relieving Pressure barg 5.69 5.69Back Pressure barg 0 0Required Relief Flow W kg/h 24260 2651Molecular Weight M 65 337Weighted Molecular Weight 71Relieving Temperature @ Inlet T °C 75 727 ¿Deben ser iguales?Compressibility Factor @ Inlet Z 0.84 0.85Specific Heats Ratio (Cp/Cv) k 1.09 1.05Percent of Gauge Back Pressure Pb/Ps % 0.0 0.0Coefficient C Fig. 32 326 321Capacity Correction Factor Kb Fig. 30 1.00 1.00Combination Correction Factor Kc 1 1Discharge Coefficient Kd 0.975 0.975Critical Flow Pressure Pcf barg 2.92 2.98Gas Flow Type Critical CriticalBack to Upstream Pressure Ratio r 0.151 0.151Subcritical Flow coefficient Fig. 34 - -Required Effective Discharge Area A in² 4.928 0.408
VALVE & ORIFICE SIZE (API 526)Valves Quantity 1Required Effective Discharge Area 5.336Minimum Orifice POrifice Selected MinimumDischarge Area in² 6.380Rating / Required 1.196Valve SizeRating in/out 150 # 150Type of Valve Conventional
P1
Pb, P2
P1/P2
F2
K12
Fire 21% Other 10%
M12
Fire 21% Other 10%
K14
From disposal system
M14
From disposal system
K39
Select as per API 526
I41
Conventional (Pb/Ps<10%) Balanced (Pb/Ps<30%) Pilot Operated (Pb/Ps<50%)
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULO GAS RELIEF VALVE SIZING
Service Description Pulmón de Aire MS2-V-591 (Fuego)
REQUIRED AREA SIZE (API 520)Set Pressure Ps barg 13.7Overpressure % 21Upstream Relieving Pressure barg 16.58Back Pressure barg 0Required Relief Flow W kg/h 3518Molecular Weight M 29Relieving Temperature @ Inlet T °C 204Compressibility Factor @ Inlet Z 1.00Specific Heats Ratio (Cp/Cv) k 1.38Percent of Gauge Back Pressure Pb/Ps % 0.0Coefficient C Fig. 32 354Capacity Correction Factor Kb Fig. 30 1.00 Combination Correction Factor Kc 1Discharge Coefficient Kd 0.975Critical Flow Pressure Pcf barg 8.34Gas Flow Type CriticalBack to Upstream Pressure Ratio r 0.058Subcritical Flow coefficient Fig. 34 -Required Effective Discharge Area A in² 0.479
VALVE & ORIFICE SIZE (API 526)Valves Quantity 1Required Effective Discharge Area 0.479Minimum Orifice GOrifice Selected MinimumDischarge Area in² 0.503Rating / Required 1.050Valve Size 1½x3Rating in/outType of Valve Conventional
P1
Pb, P2
P2/P1
F2
M12
Fire 21% Other 10%
M14
From disposal system
M38
Select as per API 526
K40
Conventional (Pb/Ps<10%) Balanced (Pb/Ps<30%) Pilot Operated (Pb/Ps<50%)
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULODRY SURFACE FIRE FLOW CALCULATION
Service Description Pulmón de Aire MS2-V-591 (Fuego)
DRY SURFACESSection Diameter L / H Surface
[mm] [mm] [m²]Shell 1 ### ### 34.21Shell 2 0 0 0.00Shell 3 0 0 0.00Head 1 ### - 2.52Head 2 ### - 2.52Head 3 0 - 0.00Head 4 0 - 0.00Total Dry Surface 39.25
REQUIRED RELIEF LOADNormal Operating Pressure Pn 9.80 bargNormal Operating Temperature Tn 20 ºCUpstream Relieving Pressure 16.58 bargRelieving Temperature 204 ºCSpecific Heats Ratio (Cp/Cv) k 1.38Vessel Wall Temperature Tw 593 ºCMolecular Weight M 29Unwetted Surface Factor F' 0.0181Required Relief Flow W 3518 kg/hRequired Relief Flow (F': 0.01) W 1942 kg/hRequired Relief Flow (F': 0.045) W 8739 kg/h
P1
T1
I29
API 3.15.2.1.2 Recommended maximum for CS is 1100ºF
I31
API 3.15.2.1.2 Minimum recommended value: 0.01 When F' value is unknown: 0.045
I33
API 521 - 3.15.2.1.2
I34
API 521 - 3.15.2.1.2
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULOGAS RELIEF VALVE SIZING
Service Description Separador General MS2-V-211 (Fuego)
REQUIRED AREA SIZE (API 520)Set Pressure Ps barg 9.80Overpressure % 21Upstream Relieving Pressure barg 11.86Back Pressure barg 0.06Required Relief Flow W kg/h 3023Molecular Weight M 22Relieving Temperature @ Inlet T °C 184Compressibility Factor @ Inlet Z 0.95Specific Heats Ratio (Cp/Cv) k 1.27Percent of Gauge Back Pressure Pb/Ps % 0.6Coefficient C Fig. 32 344Capacity Correction Factor Kb Fig. 30 1.00Combination Correction Factor Kc 1Discharge Coefficient Kd 0.975Critical Flow Pressure Pcf barg 6.08Gas Flow Type CriticalBack to Upstream Pressure Ratio r 0.083Subcritical Flow Coefficient Fig. 34 -Required Effective Discharge Area A in² 0.638
VALVE & ORIFICE SIZE (API 526)Valves Quantity 1Required Effective Discharge Area 0.638Minimum Orifice HOrifice Selected MinimumDischarge Area in² 0.785Rating / Required 1.230Valve Size 1½x3Rating in/outType of Valve Conventional
P1
Pb, P2
P2/P1
F2
J12
Fire 21% Other 10%
J14
From disposal system
J38
Select as per API 526
I40
Conventional (Pb/Ps<10%) Balanced (Pb/Ps<30%) Pilot Operated (Pb/Ps<50%)
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULOWET SURFACE FIRE FLOW CALCULATION
Service Description Separador General MS2-V-211 (Fuego)
WETTED SURFACESSection Type Phase Diam. L LLLH HLLH Surf.1 Surf. 2
[V/H] [1/2] [mm] [mm] [mm] [mm] [m²] [m²]Shell 1 Horizontal 1 2025 8750 0 1320 33.3 0.0Shell 2 Horizontal 0.0 0.0Shell 3 Horizontal 0.0 0.0Head 1 Horizontal 1 2025 - 0 1320 3.1 0.0Head 2 Horizontal 1 2025 - 0 1320 3.1 0.0Head 3 Horizontal - 0.0 0.0Head 4 Vertical - 0.0 0.0Total Wetted Surface 39.4 0.0
REQUIRED RELIEF LOADInsulation Thickness t 0 0 inInsulation Thermal Conductivity k 0.010 0 W/mKRelieving Temperature T 184 0 ºCEnvironmental Factor F 1.000 1.000Heat Absorption Q 3164633 0 kJ/hHeat of Vaporization l 1047 0 kJ/kgRequired Relief Flow W 3023 kg/h
K11
Length (Horizontal) or Height (Vertical)
M11
Low liquid level height (to area calculation)
N11
High liquid level height (to area calculation)
O29
API 521 - 3.15.3.1 50 BTU/lb when no accurate l is available
P29
API 521 - 3.15.3.1 50 BTU/lb when no accurate l is available
Q29
1 kcal/kg 1,8 BTU/lb 4,2 kJ/kg
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULOLIQUID RELIEF VALVE SIZING
Service Description
REQUIRED AREA SIZE (API 520)Set Pressure Ps barg 237.00Overpressure % 10Upstream Relieving Pressure barg 260.70Back Pressure barg 2.45Required Relief Flow Q kg/h 119340Relieving Temperature @ Inlet T °C 70Density G kg/m³ 1019Viscosity m cP 0.40Percent of Gauge Back Pressure Pb/Ps % 1.0Reynolds Number R 5182660Viscosity Correction Factor by R Kv' Fig. 36 1.000Viscosity Correction Factor Kv Iterate 1.000Combination Correction Factor Kc 1Discharge Coefficient Kd 0.65Back Pressure Correction Factor Kw Fig. 31 1.00Required Effective Discharge Area A in² 0.344
VALVE & ORIFICE SIZE (API 526)Valves Quantity 1Required Effective Discharge Area 0.344Minimum Orifice GOrifice Selected MinimumDischarge Area in² 0.503Rating / Required 1.462Valve SizeRating in/outType of Valve Conventional
P1
Pb, P2
J12
Fire 21% Other 10%
J14
From disposal system
J22
Change value to iterate
J35
Select as per API 526
I37
Conventional (Pb/Ps<10%) Balanced (Pb/Ps<30%) Pilot Operated (Pb/Ps<50%)
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULOLIQUID RELIEF VALVE SIZING
Service Description
REQUIRED AREA SIZE (API 520) WATER OILSet Pressure Ps barg 7.00 7.00Overpressure % 10 10Upstream Relieving Pressure barg 7.70 7.70Back Pressure barg 1.00 1.00Required Relief Flow Q kg/h 593750 ###Relieving Temperature @ Inlet T °C 150 150Density G kg/m³ 950 950Viscosity m cP 500 500Percent of Gauge Back Pressure Pb/Ps % 14.3 14.3Reynolds Number R 2869 2869Viscosity Correction Factor by R Kv' Fig. 36 0.95 0.95Viscosity Correction Factor Kv Iterate 0.95 0.95Combination Correction Factor Kc 1 1Discharge Coefficient Kd 0.65 0.65Back Pressure Correction Factor Kw Fig. 31 1.00 1.00Required Effective Discharge Area A in² 11.553 11.553
VALVE & ORIFICE SIZE (API 526)Valves Quantity 1Required Effective Discharge Area 23.105Minimum Orifice TOrifice Selected MinimumDischarge Area in² 26.000Rating Relief Flow kg/h ###Rating / Required 1.125Valve Size 8x10Rating in/outType of Valve Balanced
P1
Pb, P2
J12
Fire 21% Other 10%
L12
Fire 21% Other 10%
J14
From disposal system
L14
From disposal system
J22
Change value to iterate
L22
Change value to iterate
J36
Select as per API 526
I38
Conventional (Pb/Ps<10%) Balanced (Pb/Ps<30%) Pilot Operated (Pb/Ps<50%)
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULOGAS-LIQUID RELIEF VALVE SIZING
Service Description Separador General MS2-V-211 ( Full Flow)
REQUIRED AREA SIZE (API 520) GAS LIQUIDSet Pressure Ps barg 9.80 9.80Overpressure % 10 10Upstream Relieving Pressure barg 10.78 10.78Back Pressure barg 1.30 1.30Required Relief Flow W kg/h 1164 237500Molecular Weight M 22 -Relieving Temperature @ Inlet T °C 50 50Compressibility Factor @ Inlet Z 0.97 -Specific Heats Ratio (Cp/Cv) k 1.32 -Density G kg/m³ - 950Viscosity m cP - 750Percent of Gauge Back Pressure Pb/Ps % 13.3 13.3Coefficient C Fig. 32 349 -Capacity Correction Factor Kb Fig.30 1.00 -Combination Correction Factor Kc 1 1Discharge Coefficient Kd 0.975 0.65Critical Flow Pressure Pcf barg 5.38 -Gas Flow Type Critical -Back to Upstream Pressure Ratio r 0.196 -Subcritical Flow coefficient Fig. 34 - -Reynolds Number R - 1873Viscosity Correction Factor by R Kv' Fig. 36 - 0.940Viscosity Correction Factor Kv Iterate - 0.940Back Pressure Correction Factor Kw Fig. 31 - 1.00Required Effective Discharge Area A in² 0.223 3.939
VALVE & ORIFICE SIZE (API 526)Valves Quantity 1Required Effective Discharge Area 4.162Minimum Orifice NOrifice Selected MinimumDischarge Area in² 4.340Rating / Required 1.043Valve Size 4x6Rating in/outType of Valve Balanced
P1
Pb, P2
P2/P1
F2
J12
Fire 21% Other 10%
L12
Fire 21% Other 10%
J14
From disposal system
L14
From disposal system
L33
Change value to iterate
J44
Select as per API 526
I46
Conventional (Pb/Ps<10%) Balanced (Pb/Ps<30%) Pilot Operated (Pb/Ps<50%)
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULOGAS-LIQUID RELIEF VALVE SIZING
Service Description
REQUIRED AREA SIZE (API 520) GAS OIL WATERSet Pressure Ps barg 7.00 7.00 7.00Overpressure % 10 10 10Upstream Relieving Pressure barg 7.70 7.70 7.70Back Pressure barg 0.50 0.50 0.50Required Relief Flow W kg/h 16500 593750 593750Molecular Weight M 20 - -Relieving Temperature @ Inlet T °C 150 150 150Compressibility Factor @ Inlet Z 0.98 - -Specific Heats Ratio (Cp/Cv) k 1.25 - -Density G kg/m³ - 950.0 950.0Viscosity m cP - 500 500Percent of Gauge Back Pressure Pb/Ps % 7.1 7.1 7.1Coefficient C Fig. 32 342 - -Capacity Correction Factor Kb Fig.30 1.00 - -Combination Correction Factor Kc 1 1 1Discharge Coefficient Kd 0.975 0.65 0.65Critical Flow Pressure Pcf barg 3.82 - -Gas Flow Type Critical - -Back to Upstream Pressure Ratio r 0.174 - -Subcritical Flow coefficient Fig. 34 - - -Reynolds Number R - 3658 3658Viscosity Correction Factor by R Kv' Fig. 36 - 0.959 0.959Viscosity Correction Factor Kv Iterate - 0.959 0.959Back Pressure Correction Factor Kw Fig. 31 - 1.00 1.00Required Effective Discharge Area A in² 5.271 11.075 11.075
VALVE & ORIFICE SIZE (API 526)Valves Quantity 2Required Effective Discharge Area 13.710Minimum Orifice ROrifice Selected MinimumDischarge Area in² 16.000Rating / Required 1.167Valve Size 6x10Rating in/outType of Valve Conventional
P1
Pb, P2
P1/P2
F2
J12
Fire 21% Other 10%
L12
Fire 21% Other 10%
N12
Fire 21% Other 10%
J14
From disposal system
L14
From disposal system
N14
From disposal system
L33
Change value to iterate
N33
Change value to iterate
J44
Select as per API 526
I46
Conventional (Pb/Ps<10%) Balanced (Pb/Ps<30%) Pilot Operated (Pb/Ps<50%)
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULOHYDRAULIC EXPANSION FLOW CALCULATION
Service Description
REQUIRED RELIEF LOADCubical Expansion Coeff. B 1/K 0.001Total Heat Transfer Rate H kJ/h 200000Density G kg/m³ 1000Specific Heat C kJ/kgºC 4184Requires Relief Flow W kg/h 47.87
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API 521Table 3- Typical Values of Cubical Expansion
Coefficient for Hydrocarbon Liquids and Water at 60ºF
Gravity of Liquid (ºAPI) Value (per ºF)3-34,9 0.0004
35-50,9 0.000551-63,9 0.000664-78,9 0.000779-88,9 0.000889-93,9 0.00085
94-100 and lighter 0.0009Water 0.0001
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BUE-100000-R-XX-001 Rev.: A
CLIENTE: XXX
PROYECTO:RRR
HOJA DE CÁLCULOTUBE RUPTURE FLOW CALCULATION
Service Description
REQUIRED RELIEF LOADRelief Fluid State GasOperation Pressure (HP Side) Phigh barg 20.00Set Pressure (LP Side) Pset barg 12.00Density (HP Side) r 15.53Specific Heats Ratio (Cp/Cv) (HP Side) k 1.30Critical Flow Pressure Pcf barg 10.45Pressure Ratio r 0.68Inside Tube / Pipe Diameter ID in 0.75Discharge Coefficient C 0.60Compressibility Coefficient Y 0.90Required Relief Flow W kg/h 5081
Check for:- Cold liquid flow vaporization (extra capacity required) (API 3.18.3)- Hot vapor flow condensation (less capacity required) (API 3.18.3)- Gas flow autorefrigeration (API 3.18.3) HP Temp [ºC] 50
LP Temp [ºC] -23.6- 10/13 criteria (API 3.18.2)- Flow increase capacity of low pressure side (API 3.18.5)- Storage decrease from high pressure side (API 3.18.5)
kg/m
K15
Used only when fluid is Gas
K16
For Gas
K17
If Pset<Pcf then r=Pcf/Phigh
K20
Perry 6th Ed Eq 5.23
K21
Crane Tech Pap 410 Eq 2.21/22
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