Module 3 Process Piping Hydraulics Sizing And Pressure Rating Pdf Exclusive

A pipe rated for 1,500 psi at 100°F may only hold 900 psi at 600°F. Module 3 emphasizes the stress tables. You must apply a derating factor based on the material’s yield strength at operating temperature.

Is the flow regime correctly identified (especially for viscous liquids)?

In two-phase gas-liquid lines, low velocities can cause liquid to pool at the bottom of horizontal runs. High-velocity gas passing over this liquid creates waves that eventually fill the entire cross-section, forming a "slug" of liquid. These dense slugs travel at gas velocities and destroy elbows and supports when changing direction.

: Typical liquid velocities range from 1 to 3 m/s, while gas/steam velocities can reach 50–75 m/s depending on noise and erosion constraints. Preliminary Selection A pipe rated for 1,500 psi at 100°F

Module 3: Process Piping Hydraulics, Sizing, and Pressure Rating Introduction

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This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Is the flow regime correctly identified (especially for

Chaotic, swirling movement (Reynolds number > 4000). Key Equations

Selecting pipe sizes balances capital expenditures (CAPEX) with long-term operational expenditures (OPEX). Larger pipe diameters lower velocity and pumping energy constraints but increase initial material and support costs. Recommended Velocity Boundaries

) match extreme operating conditions, not just normal operations. These dense slugs travel at gas velocities and

= Darcy friction factor (determined using the Moody Chart or the Colebrook-White equation) = Equivalent length of the pipework (meters or feet) = Internal diameter of the pipe (meters or feet) = Fluid velocity (meters/second or feet/second) = Acceleration due to gravity ( Minor Losses in Fittings and Valves

= Darcy friction factor (obtained from the Moody Chart or Colebrook-White equation) = Equivalent length of the pipe ( For laminar flow, the friction factor is simply

must be calculated to safely contain the internal pressure as per ASME B31.3 The Barlow Equation : Used to find the "pressure design thickness" (