Regulatory Affairs
November 29, 2018

UPDATED: Clarification - Hose assembly inspection and testing

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Recently, the CPA received questions from members regarding hose assembly inspection and testing requirements. To address these questions, the CPA gathered relevant information from standard CSA B620, a mandatory standard that is adopted into the Transportation of Dangerous Goods Regulations.

CSA B620-14 - Highway tanks and TC portable tanks for the transportation of dangerous goods (edition currently in force)

  • Clause requires that each hose assembly shall be pressure tested annually. 
  • Subclause (a) stipulates that a hose assembly having any damage (see below) shall be taken out of service and not be pressure tested until repaired. 
    • Damage to the hose cover that exposes the reinforcement.
    • Kinked, flattened, or permanently deformed wire braid.
    • Soft spots when not under pressure, bulging under pressure, or loose outer covering.
    • Damaged, slipping, or excessively worn hose couplings.
    • Loose or missing bolts or fastenings on bolted hose coupling assemblies.
    • Deteriorated legibility or absence of the serial or identification number and HAWP (Hose Assembly Working Pressure).
  • Subclause (b) that the test pressure shall be, for CSA-certified hose assemblies, not less than 2400 kPa (350 psi). 
    Note: Test pressures for other types of hose assemblies (e.g. not CSA-certified) can be found in Clause of the CSA B620-14 standard.
  • Subclause (c) prohibits the use of the following to pressurize non-CSA-certified hose assemblies:
    • Compressed gas,
    • Compressed air,
    • Flammable liquid or
    • Corrosive liquid.
      Note: Water is the recommended test fluid.
      Note: This subclause does not explicitly state that the above can be used for CSA-certified hose assemblies.                 
  • Subclause (e) requires that provisions be made to protect personnel during testing should failure occur. 
  • Subclause (f) stipulates that, to pass a pressure test, the hose assembly shall hold the pressure without bulging, distortion, or leaks for at least 5 min when isolated from the pressure supply.

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