Gas Pipeline Pressure Testing – Maximum Pressure Drop

Maximum pressure drop is performed by balancing changes in the measured pressure in the test section against the theoretical pressure changes calculated from changes in the measured temperature of the test section.
Ambient temperature swings can cause challenges regarding pressure changes. Temperature gauges must far enough away from exposed piping to avoid erroneous readings.
PTLB Testing 2.3_Intro.png

𝑃_𝑚𝑎𝑥 − Maximum Pressure Drop[psi]

𝐷 − Internal Pipe Diameter[in]

𝑡 − Shut in Time[hr]

𝑃₁ − Initial Test Pressure[psi]

Input Parameters

To create a new case, click the “Add Case” button
Select the Gas Pipeline Pressure Testing – Maximum Pressure Drop application from the Pipeline Testing module.
Enter Case Name, Location, Date and any necessary notes.
Fill out all required fields.
Make sure the values you are inputting are in the correct units.
Click the CALCULATE button.

Initial Pressure(psi)
Shut-in time(hr.)
Internal pipe diameter(in)

PTLB Testing 2.3_Input.png

Gas Pipeline Pressure Testing – Maximum Pressure Drop

𝑃_𝑚𝑎𝑥 − Maximum Pressure Drop[psi]

𝐷 − Internal Pipe Diameter[in]

𝑡 − Shut in Time[hr]

𝑃₁ − Initial Test Pressure[psi]

Input Parameters

Related Links

Table of Contents

Table of Pages

Table of Contents

Gas Pipeline Pressure Testing – Maximum Pressure Drop

𝑃𝑚𝑎𝑥 − Maximum Pressure Drop[psi]

𝐷 − Internal Pipe Diameter[in]

𝑡 − Shut in Time[hr]

𝑃1 − Initial Test Pressure[psi]

Input Parameters

Related Links

Table of Contents

Table of Pages

Table of Contents

𝑃_𝑚𝑎𝑥 − Maximum Pressure Drop[psi]

𝑃₁ − Initial Test Pressure[psi]