VECO ENGINEERING LTD.
CALCULATIONS
FOR
PIPELINE SURGE ANALYSIS
DOCUMENT NO:
JOB NO:
PROJECT NO:
XX.XX.XX XX.XX.XX
REV. DESCRIPTION DATE BY CHECKED APPROV.
X:\Offshore Technology\Calculations\371048315.xls\Cover Sheet
X:\Offshore Technology\Calculations\371048315.xls\Cover Sheet
Introduction
PRELIMINARY PIPELINE SURGE ANALYSIS
1.0 Objective
The objective of this calculation is to determine the potential for surge in a pipeline, the method of calculating surge is via the
Joukowsky equation. This method is conservative hence any indication of surge given by this method should be evaluated fully.
2.0 Nomenclature
Symbol Description Units
c Acoustic Velocity m/s
d Pipeline Inside Diameter mm
E Youngs Modulus bar
e Pipeline Wall Thickness mm
K Liquid Bulk Modulus of Elasticity bar
L Pipeline Length m
P Pipeline Period s
Pp Pipeline Peak Pressure bara
Ps Pipeline Instantaneous Surge Pressure bar
Pso Pipeline Shutoff Pressure bara
v Fluid Velocity m/s
W Fluid Flowrate kg/h
r Fluid Density kg/m3
h Poissons Ratio -
3.0 Calculation Procedure
3.1 Calculate Fluid Velocity
v = 353.7 * W / (d2 * r )
3.2 Calculate the Acoustic Velocity
c = ((K *100000) / ( r * ( 1 + ((d*K)/(E * e)) * (1 - h2))))1/2
3.3 Calculate the Pipeline Period
P=2*L/c
3.4 Calculate the Instantaneous Surge Pressure
Ps = r * v * c / 100000
3.5 Calculate the Peak Pressure
Pp = Ps + Pso
4.0 References
4.1 Crane, Flow of Fluids, Page 3.6
4.2 Fluid Mechanics, 2nd Edition, Douglas, Gasiorek, Swaffield
371048315.xls
Pipe 1
PRELIMINARY PIPELINE SURGE ANALYSIS
ATTACHMENT NO. :
CALC. NO.:
TITLE : PAGE NO. : 1
CLIENT :
BY : CHKD : APPD :
DATE :
THIS DOCUMENT WILL BE SUBJECT TO A QA AUDIT
PERSONNEL SIGNING ALL ISSUES OF THIS DOCUMENT ARE RESPONSIBLE FOR SDC APPROVAL
CALCULATION
INPUT :-
ITEM UNITS RUN 1 RUN 2 RUN 3 RUN 4
Fluid Flowrate kg/h 1003212
Fluid Density kg/m3 705
Pipeline Length m 3048
Pipeline Inside Diameter mm 406.4
Pipeline Wall Thickness mm 12.7
Liquid Bulk Modulus of Elasticity bar 6897
Youngs Modulus bar 1903448
Poissons Ratio - 0.3
Shut Off Pressure bara 20
OUTPUT :-
ITEM UNITS RUN 1 RUN 2 RUN 3 RUN 4
Fluid Velocity m/s 3.05
Acoustic Velocity m/s 981.5
Pipeline Period s 6.2
Instantaneous Surge Pressure bar 21.1
Peak Pressure bara 41.1
371048315.xls
Pipe 2
PRELIMINARY PIPELINE SURGE ANALYSIS
ATTACHMENT NO. :
CALC. NO.:
TITLE : PAGE NO. : 2
CLIENT :
BY : CHKD : APPD :
DATE :
THIS DOCUMENT WILL BE SUBJECT TO A QA AUDIT
PERSONNEL SIGNING ALL ISSUES OF THIS DOCUMENT ARE RESPONSIBLE FOR SDC APPROVAL
CALCULATION
INPUT :-
ITEM UNITS RUN 1 RUN 2 RUN 3 RUN 4
Fluid Flowrate kg/h
Fluid Density kg/m3
Pipeline Length m
Pipeline Inside Diameter mm
Pipeline Wall Thickness mm
Liquid Bulk Modulus of Elasticity bar
Youngs Modulus bar
Poissons Ratio -
Shut Off Pressure bara
OUTPUT :-
ITEM UNITS RUN 1 RUN 2 RUN 3 RUN 4
Fluid Velocity m/s
Acoustic Velocity m/s
Pipeline Period s
Instantaneous Surge Pressure bar
Peak Pressure bara
371048315.xls
Pipe 3
PRELIMINARY PIPELINE SURGE ANALYSIS
ATTACHMENT NO. :
CALC. NO.:
TITLE : PAGE NO. : 3
CLIENT :
BY : CHKD : APPD :
DATE :
THIS DOCUMENT WILL BE SUBJECT TO A QA AUDIT
PERSONNEL SIGNING ALL ISSUES OF THIS DOCUMENT ARE RESPONSIBLE FOR SDC APPROVAL
CALCULATION
INPUT :-
ITEM UNITS RUN 1 RUN 2 RUN 3 RUN 4
Fluid Flowrate kg/h
Fluid Density kg/m3
Pipeline Length m
Pipeline Inside Diameter mm
Pipeline Wall Thickness mm
Liquid Bulk Modulus of Elasticity bar
Youngs Modulus bar
Poissons Ratio -
Shut Off Pressure bara
OUTPUT :-
ITEM UNITS RUN 1 RUN 2 RUN 3 RUN 4
Fluid Velocity m/s
Acoustic Velocity m/s
Pipeline Period s
Instantaneous Surge Pressure bar
Peak Pressure bara
371048315.xls
Pipe 4
PRELIMINARY PIPELINE SURGE ANALYSIS
ATTACHMENT NO. :
CALC. NO.:
TITLE : PAGE NO. : 4
CLIENT :
BY : CHKD : APPD :
DATE :
THIS DOCUMENT WILL BE SUBJECT TO A QA AUDIT
PERSONNEL SIGNING ALL ISSUES OF THIS DOCUMENT ARE RESPONSIBLE FOR SDC APPROVAL
CALCULATION
INPUT :-
ITEM UNITS RUN 1 RUN 2 RUN 3 RUN 4
Fluid Flowrate kg/h
Fluid Density kg/m3
Pipeline Length m
Pipeline Inside Diameter mm
Pipeline Wall Thickness mm
Liquid Bulk Modulus of Elasticity bar
Youngs Modulus bar
Poissons Ratio -
Shut Off Pressure bara
OUTPUT :-
ITEM UNITS RUN 1 RUN 2 RUN 3 RUN 4
Fluid Velocity m/s
Acoustic Velocity m/s
Pipeline Period s
Instantaneous Surge Pressure bar
Peak Pressure bara
371048315.xls
Pipe 5
PRELIMINARY PIPELINE SURGE ANALYSIS
ATTACHMENT NO. :
CALC. NO.:
TITLE : PAGE NO. : 5
CLIENT :
BY : CHKD : APPD :
DATE :
THIS DOCUMENT WILL BE SUBJECT TO A QA AUDIT
PERSONNEL SIGNING ALL ISSUES OF THIS DOCUMENT ARE RESPONSIBLE FOR SDC APPROVAL
CALCULATION
INPUT :-
ITEM UNITS RUN 1 RUN 2 RUN 3 RUN 4
Fluid Flowrate kg/h
Fluid Density kg/m3
Pipeline Length m
Pipeline Inside Diameter mm
Pipeline Wall Thickness mm
Liquid Bulk Modulus of Elasticity bar
Youngs Modulus bar
Poissons Ratio -
Shut Off Pressure bara
OUTPUT :-
ITEM UNITS RUN 1 RUN 2 RUN 3 RUN 4
Fluid Velocity m/s
Acoustic Velocity m/s
Pipeline Period s
Instantaneous Surge Pressure bar
Peak Pressure bara
371048315.xls
