Line Sizing (si) Gas Phase.xls

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<є/D<10-2 and 5,000 < Re<10 8 ( source :http://piping-designer.com/Friction_Factor)

9

Calculate pressure drop with two conditions: - If operating pressure > 50 psig (3.5 barg), use equation 2.17 from API RP 14 E.

- If operating pressure < 50 psig (3.5 barg), use empirical Spitzglass equation 2.12 from API RP 14 E.

10

Noise calculation is estimated as follow: - Input all data required. - Calculate ring frequency of pipe (Hz) and strouhal frequency of flow (f o); based on Hydrocarbon Processing, James G. Seebold - Standard Oil Co. of California, San Fransisco - Calculate sound level for each octave band center frequency (f c) defined; SPL = 40 log U + 20 log K - 10 log [(T/D) (1+6/D)] - 5 log [(fc/fr) (1-fc/fr)] + S; based on Hydrocarbon Processing, James G. Seebold - Standard Oil Co. of California, San Fransis

- Calculate overall SPL for each given fc; Average SPL = 10 log {(1/n)[10^(SPL1/10)+…+10^(SPLn/10)]}

11

12

Select the line size (NPS and Sch) then check the following criteria : - velocity, pipe size ia adequate if the velocity is within the range of allowable velocity - pressure drop (psi) /100 ft or pressure drop (bar)/100m, pipe size is adquate if the pressure drop is below the maximum pressure drop criteria - outlet pressure, pipe size is adequate if the outlet pressure is greater than the minimum outlet pressure. - noise criteria, not exceed 85 dB. For the calculation require only velocity and pressure drop criteria, please select the following spreadsheet : -Calc_USC_wo_DPtotal -Calc_SI_wo_DPtotal

Additional Info : Colebrook Equation - to calculate Friction Factor

Annex A

Annex A

References : - API 14E, - Manning, Francis S.; Thompson, Richard E. (1991), Oilfield Processing of Petroleum. Vol. 1: Natural Gas, PennWell Books, ISBN 0878143432 , 420 pages. See page 293. -Colebrook, C. F. and White, C. M. (1937). "Experiments with Fluid Friction in Roughened Pipes". Proceedings of the Annex B Royal Society of London. Series A, Mathematical and Physical Sciences 161 (906): 367--381. -Swamee, P.K.; Jain, A.K. (1976). "Explicit equations for pipe-flow problems". Journal of the Hydraulics Division (ASCE) 102 (5): 657–664. -http://piping-designer.com/Friction_Factor