📊Overview

The Hydrotest Pressure & Duration Calculator helps pipeline engineers determine the correct hydrotest pressure, duration, and allowable pressure drop for pipeline pressure testing, following common design codes.

🔢Inputs (user-selectable units)

  • Pipeline Design Pressure: (bar, psi, MPa)
  • Pipeline Length: (meters, kilometers, feet, miles)
  • Pipe Diameter: (mm, cm, inches)
  • Pipeline Design Code: (API 1110, ASME B31.4, ASME B31.8)
  • Pipe Material Yield Strength: (MPa, psi)
  • Output Pressure Unit: (bar, psi, MPa)

🧮Calculations

  • Hydrotest Pressure: Set by multiplying design pressure by a code-based safety factor (e.g., 1.25 or 1.5).
  • Test Duration: Set per code (typically 4 or 8 hours).
  • Allowable Pressure Drop: Code-based (usually 4–5% of test pressure).
  • Units: All inputs/outputs can be in your preferred units; internal calculations convert to SI.

📤Outputs

  • Recommended hydrotest pressure (in user-selected units)
  • Required test duration (hours)
  • Allowable pressure drop (% or bar)
  • Reference to the governing code section