Line Sizing (SI) Gas Phase [PDF]

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Document No.



GAS LINE SIZING



SMRG-PIPA-PRO-CAL-001



Job No. Project Title Client Location Line No. Routing Case



: : : : : : :



C.1589 SMRG Prepared by EPC Pipa Semarang Checked by PT. Pertamina Approved by Semarang Revision No. Pipeline Revision Date From Tambak Lorok to Kaligawe DESIGN



: : : : :



CDW JHP KK 1 20-Nov-15



OBJECTIVES This calculation was performed to determine the size of pipeline from Tambak Lorok to Kaligawe. CALCULATION METHOD 1. Sizing was carried out by EXCEL Inhouse Program. 2. Unit of Measurement : SI REFERENCE 1. API RP 14 E Recommended Practice for Design and Installation of Offshore Production Platform Piping Systems, Section 2, "Piping Design" 2. Darby, R., Chemical Engineering Fluid Mechanics, Chapter 7, "Internal Flow Application" 3. Crane, Flow of Fluids through Valves, Fittings and Pipe, Technical Paper 410 4. GPSA Engineerng Data Book, 12ed, Section 17, Fluid Flow and Piping 5. C.1589-PRO-DB-001 Process Design Basis LINE SIZING CRITERIA 1 Maximum Velocity is 60 ft/s (18.28 m/s) as per API RP 14 E. 2 Pressure drop < 0.27 bar/100 m as per Process Design Basis ASSUMPTION 1 Pipeline length : 2 Elevation Difference : DESIGN BASIS 1 Flowrate 2 Pressure Temperature 3 Material 4 Roughness 5 Molecular Weight 6 Z factor 7 Viscosity 8



: : : : : : : ;



7000 m No



368108 Nm3/day 16 barg 30.5 deg C Carbon Steel 0.045 mm 17.39 0.9622 0.011 cP



13



MMSCFD



(from HYSYS Simulation) (from HYSYS Simulation) (from HYSYS Simulation)



CALCULATION RESULT SUMMARY Selected pipe size for pipeline is 8 in. Lampiran 1 : Halaman 1 dari 4



Document No.



GAS LINE SIZING



SMRG-PIPA-PRO-CAL-001



Project No. Project Title Client Location Line No. Routing Case



: : : : : : :



C.1589 SMRG EPC Pipa Semarang PT. Pertamina Semarang Pipeline From Tambak Lorok to Kaligawe DESIGN



DESIGN CRITERIA Line Sizing Criteria Maximum Fluid Velocity Allowable Pressure Drop Allowable Noise Level at 3 ft Capacity Design Margin



Vmax



Prepared by Checked by Approved by Revision No. Revision Date



= =



DP / 100 m = = =



DESIGN DATA Pressure Temperature Molar Flow



P T Q



Molecular Weight Viscosity Compressibility Factor Pipe Material Pipe Roughness Value Correction factor for pipe roughness Specific Heat Ratio



= = =



m Z e c Cp/Cv



CALCULATION Design Molar Flow



: : : : :



CDW JHP KK 1



20-Nov-15



General Recommendation 18.28 m/s 0.27 bar/100 m 85 dB 0%



16.0 30.5



barg °C Nm3/hr



15337.83 13.0 17.39 0.011 0.962



MMSCFD



= = = = = = =



Carbon Steel 0.045 1.00 1.312



=



15337.8



Nm3/hr



cP



mm



Mass Flow



W



=



11750.8



kg/hr



Density



ρ



=



12.0



kg/m3



Specific Gravity



SG



=



0.60



Minimum Diameter



Dmin



=



137.73



mm



Sonic Velocity



Vsonic



=



417.8



m/s



Option Option 1 Option 2 Option 3 Option 4



NPS 50 100 150 200



Schedule 80 40 40 40



ID, mm 49.251 102.260 154.051 202.717



Velocity, m/s 142.97 33.16 14.61 8.44



Remarks NOT OK NOT OK OK OK



Option Option 1 Option 2 Option 3 Option 4



є / ID 9E-04 4E-04 3E-04 2E-04



Re 7.70E+06 3.71E+06 2.46E+06 1.87E+06



Friction Factor, f 0.019 0.016 0.015 0.015



ΔP, bar/100 m 47.791 1.056 0.126 0.031



Remarks NOT OK NOT OK OK OK



Noise Level, dB 107.16 83.28 65.94 52.85



Remarks NOT OK OK OK OK



Option Option 1 Option 2 Option 3 Option 4 SELECTED PIPE SIZE



200 8



mm in



1.143



Document No.



GAS LINE SIZING



SMRG-PIPA-PRO-CAL-001



Project No. Project Title Client Location Line No. Routing Case



: : : : : : :



C.1589 SMRG EPC Pipa Semarang PT. Pertamina Semarang Pipeline From Tambak Lorok to Kaligawe DESIGN



Prepared by Checked by Approved by Revision No. Revision Date



: : : : :



CDW JHP KK 1



20-Nov-15



Lampiran 1 : Halaman 2 dari 4



Document No.



GAS LINE SIZING



SMRG-PIPA-PRO-CAL-001



Job No. Project Title Client Location Line No. Routing Case



: : : : : : :



C.1589 SMRG Prepared by EPC Pipa Semarang Checked by PT. Pertamina Approved by Semarang Revision No. Pipeline Revision Date From Tambak Lorok to Kaligawe DESIGN



: : : : :



CDW JHP KK 1 20-Nov-15



OBJECTIVES This calculation was performed to determine the size of pipeline from Tambak Lorok to Kaligawe. CALCULATION METHOD 1. Sizing was carried out by EXCEL Inhouse Program. 2. Unit of Measurement : SI REFERENCE 1. API RP 14 E Recommended Practice for Design and Installation of Offshore Production Platform Piping Systems, Section 2, "Piping Design" 2. Darby, R., Chemical Engineering Fluid Mechanics, Chapter 7, "Internal Flow Application" 3. Crane, Flow of Fluids through Valves, Fittings and Pipe, Technical Paper 410 4. GPSA Engineerng Data Book, 12ed, Section 17, Fluid Flow and Piping 5. C.1589-PRO-DB-001 Process Design Basis LINE SIZING CRITERIA 1 Maximum Velocity is 60 ft/s (18.28 m/s) as per API RP 14 E. 2 Pressure drop < 0.27 bar/100 m as per Process Design Basis ASSUMPTION 1 Pipeline length : 2 Elevation Difference : DESIGN BASIS 1 Flowrate 2 Pressure Temperature 3 Material 4 Roughness 5 Molecular Weight 6 Z factor 7 Viscosity 8



: : : : : : : ;



7000 m No



368108 Nm3/day 10 barg 30.5 deg C Carbon Steel 0.045 mm 17.39 0.9622 0.011 cP



13



MMSCFD



(from HYSYS Simulation) (from HYSYS Simulation) (from HYSYS Simulation)



CALCULATION RESULT SUMMARY Selected pipe size for pipeline is 8 in. Lampiran 1 : Halaman 3 dari 4



Document No.



GAS LINE SIZING



SMRG-PIPA-PRO-CAL-001



Project No. Project Title Client Location Line No. Routing Case



: : : : : : :



C.1589 SMRG EPC Pipa Semarang PT. Pertamina Semarang Pipeline From Tambak Lorok to Kaligawe DESIGN



DESIGN CRITERIA Line Sizing Criteria Maximum Fluid Velocity Allowable Pressure Drop Allowable Noise Level at 3 ft Capacity Design Margin



Vmax



Prepared by Checked by Approved by Revision No. Revision Date



= =



DP / 100 m = = =



DESIGN DATA Pressure Temperature Molar Flow



P T Q



Molecular Weight Viscosity Compressibility Factor Pipe Material Pipe Roughness Value Correction factor for pipe roughness Specific Heat Ratio



= = =



m Z e c Cp/Cv



CALCULATION Design Molar Flow



: : : : :



CDW JHP KK 1



20-Nov-15



General Recommendation 18.28 m/s 0.27 bar/100 m 85 dB 0%



10.0 30.5



barg °C Nm3/hr



15337.83 13.0 17.39 0.011 0.962



MMSCFD



= = = = = = =



Carbon Steel 0.045 1.0000 1.312



=



15337.8



Nm3/hr



cP



mm



Mass Flow



W



=



11750.8



kg/hr



Density



ρ



=



7.8



kg/m3



Specific Gravity



SG



=



0.60



Minimum Diameter



Dmin



=



171.19



mm



Sonic Velocity



Vsonic



=



410.53



m/s



Option Option 1 Option 2 Option 3 Option 4



NPS 50 100 150 200



Schedule 80 40 40 40



ID, mm 49.251 102.260 154.051 202.717



Velocity, m/s 220.86 51.23 22.57 13.04



Remarks NOT OK NOT OK NOT OK OK



Option Option 1 Option 2 Option 3 Option 4



є / ID 9E-04 4E-04 3E-04 2E-04



Re 7.70E+06 3.71E+06 2.46E+06 1.87E+06



Friction Factor, f 0.019 0.016 0.015 0.015



ΔP, bar/100 m 73.827 1.631 0.195 0.047



Remarks NOT OK NOT OK OK OK



Noise Level, dB 111.21 88.10 71.68 59.06



Remarks NOT OK NOT OK OK OK



Option Option 1 Option 2 Option 3 Option 4 SELECTED PIPE SIZE



200 8



mm in



1.143



Document No.



GAS LINE SIZING



SMRG-PIPA-PRO-CAL-001



Project No. Project Title Client Location Line No. Routing Case



: : : : : : :



C.1589 SMRG EPC Pipa Semarang PT. Pertamina Semarang Pipeline From Tambak Lorok to Kaligawe DESIGN



Prepared by Checked by Approved by Revision No. Revision Date



: : : : :



CDW JHP KK 1



20-Nov-15



Lampiran 1 : Halaman 4 dari 4



GUIDANCE FOR LINE SIZING STANDARDIZATION No.



Gas Line Sizing



1



Select the line sizing criteria : -General Recommendation -Suction of Centrifugal Compressor -Suction of Reciprocating Compressor -Discharge of Centrifugal Compressor -Discharge of Reciprocating Compressor -Anti Surge Recycle -Intermittent Service -Vacuum Service This criteria will determine maximum velocity criteria.



2



Input the design margin for capacity. This value may refer to client requirements (state in design basis) or follow API 14 E, Table 2.1



3



Design Data : -Input all required design data (fluid properties) -select pipe material, this will impact to pipe roughness value -input correction factor for pipe roughness (in case using the existing pipe), value larger than 1 -Input line length -Input elevation of pipe at source and at destination



4



Calculate Dmin with equation 2.13 from API RP 14 E to define the minimum diameter required (flowrate already accommodated with margin).



5



Calculate velocity for each possible diameter with equation 2.13 from API RP 14 E.



6



Determination of pressure drop in a line should include the effects of valves and fittings. Input all required data for fittings. These data will be used to calculate total pressure drop from source to destination (hydraulic calculation).



7



Calculate the Reynold Number (Re)



8



Moody Friction Factor can be calculated based on Swamee Jain equation. This equation is used to solve directly for the Darcy–Weisbach friction factor f for a fullflowing circular pipe. It is an approximation of the implicit Colebrook– White equation. The Swamee-Jain Equation is accurate to 1.0% of the Colebrook-White Equation for 10 -6