Hydrostatic Procedure

Hydrostatic Cylinder Testing Procedures

Having your cylinder tested at Frog Dive

All diving cylinders in Australia are required to be hydrostatically tested when in use yearly. A hydrostatic test includes:

  1. Empty your cylinder of compressed air
  2. Inspecting the outside of the cylinder for wear & tear
  3. Visually inspecting the cylinder internally for rust and other damage
  4. Fill cylinder with water and conduct an expansion/contraction test of the cylinder, then dry.
  5. Completing an EDDY current test on aluminium cylinders to discover sustained load cracking (SLC) in the neck thread of the cylinders.
  6. Record results of test and issue a test certificate and stamp the cylinder.

All Australian Cylinder Test Stations are registered and audited by Standards Australia. All testing is conducted in accordance with relevant Australian Standards. The Standards are:

  1. AS 2030.1 1999 – The verification, filling, inspection, testing and maintenance of cylinders for storage and transport of compressed gases
  2. AS 2337.1 2004 – Gas cylinder test stations – General requirements, inspection and tests
  3. AS 1777 2005 – Aluminium cylinders for compressed gases – seamless
Information on Sustained Load Cracking in Aluminium Cylinders

For more information regarding sustained load cracking in aluminium cylinders please click here….