Compliance

Cylinder testing
Gas cylinder test periods have been defined by the gas traffic or type of gas in a cylinder. The cylinder manufacturer has produced a gas cylinder to an approved design. The design stipulates the parameters that the gas cylinder can be used within. These limitations include such things as the pressure a cylinder can be filled to and the pressure it must be tested to, also the test intervals and any periodic tests it may be required to pass.

The legal requirements in New Zealand for filling and testing a cylinder are prescribed in the "Hazardous Substances and New Organisms Act" and the set of regulatory controls below it. The compressed gases regulations list all the requirements for a gas cylinder within New Zealand.

Test Periods required by the act

Gas Type

Period for re-test

LPG – any application 

10 years

Oxygen – up to 40 years of old (also see below)

10 years

CO2 – cylinders 

5 years

CO2 – Fire Extinguisher (except below)

5 years

Dry Powder – Fire Extinguisher 

5 years

Wet Chemical – Fire Extinguisher

5 years

Foam – fire Extinguisher

5 years

Water – Fire Extinguisher

5 year

Oxygen – over 40 years of age

5 years

Nitrogen – any application

5 years

Argon – any application

5 years

Air – (except below)

5 years

SCBA – Aluminium cylinders FRP

3 years

CO2 – Fire Extinguisher with shrunk foot rings

 

2 years

SCUBA – Hydrostatic test

2 years

SCUBA – Visual test

1 year