Pack In Pipeline

Calculates using gas packed in an isolated section of the pipe. It uses PLTB Gas Lost in a Full-Bore Rupture calculation in the Accidental Release Module. Upstream and downstream pressures must be known at the time of calculation. In addition, the actual internal diameter and gas temperature can change the results for accounting purposes.,

Where

𝑃_𝑎𝑣𝑒 − average pressure[psia]

𝐷 − Pipe Inside Diameter[ft]

𝐿 − Pipeline Length[ft]

𝑛_𝑇 −Total numbers of moles of gas,lb∙moles.

𝑅 − Gas constant, 10.73[ft³ • psia/lb • moles °R]

𝑍_𝑎𝑣𝑒− average compressibility factor

𝑇_𝑎𝑣𝑒 − Gas Average Temperature[°R]

 
This value will be used to determine the gas volume ,V-b. existing in pipeline at base condition (P_b = 14.71 and T_b = 520)

     

Input Parameters

1. To create a new case, click the “Add Case” button
2. Select the Pack in Pipeline application from the Pipeline Testing module.
3. Enter Case Name, Location, Date and any necessary notes.
4. Fill out all required fields.
5. Make sure the values you are inputting are in the correct units.
6. Click the CALCULATE button.

• Nominal Pipe Size(in):(0.625” – 48”)
• Wall Thickness(in):(0.068”- >2”)
• Average Gas Temperature(°F)
• Base Pressure(psia)
• Upstream Pressure(psig)
• Downstream Pressure(psig)
• Internal Pipe Diameter(in)
• Pipeline Length(miles)
• Gas Specific Gravity

 

Outputs/Reports

1. View the results.
2. If an input parameter needs to be edited be sure to hit the CALCULATE button after the change.
3. To SAVE, fill out all required case details then click the SAVE button.
4. To rename an existing file, click the SAVE As button. Provide all case info then click SAVE.
5. To generate a REPORT, click the REPORT button.
6. The user may export the Case/Report by clicking the Export to Excel/PowerPoint icon.
7. To delete a case, click the DELETE icon near the top of the widget.

• Average Pressure(psia)
• Average Compressibility Factor
• Pack in Gas Pipeline (MSCF)

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