| CALC : Pipe : Wall Thickness 062 : ASME B31.8 Pipeline Operating Pressure From Leak Test Pressure : Calculator
Description : Calculate the ASME B31.8 pipeline allowable operating pressure from the internal leak test pressure.
Discussion : Select a standard zone type from ASME B31.8 or use a custom design factor. To use a custom design factor select custom in the zone type select box, and enter your custom design factor. You do not need to enter a design factor if you select a standard zone type.
References :
Options :
- Zone type : onshore class 1-1, 1-2, 2, 3 and 4, offshore pipelines and platforms, and custom
Input Variables :
- Pt = Pipeline Leak Test Gauge Pressure
- Z = Zone Type
- f = Pipeline Leak Test Pressure Factor
Output Variables :
- P = Pipeline Design Gauge Pressure
Calculation :
If Z = 1 : Class 1 : 1
P = Pt / 1.25
Otherwise If Z = 2 : Class 1 : 2
P = Pt / 1.1
Otherwise If Z = 3 : Class 2
P = Pt / 1.25
Otherwise If Z = 4 : Class 3 and 4
P = Pt / 1.4
Otherwise If Z = 5 : Offshore
P = Pt / 1.25
Otherwise If Z = 6 : Platform
P = Pt / 1.4
Otherwise If Z = 7 : Custom
P = Pt / f
End of If Block
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