OPITO Authorised Gas Tester

OPITO Authorised Gas Tester


The Authorised Gas Tester role is critical in testing for and ensuring safe working atmospheres, in particular: permit controlled confined spaces, and prior to and during hot work. This course is designed to provide the basic training, knowledge, assessment and certification requirements for Authorised Gas Testers. The aim and objectives of the Authorised Gas Tester training programme is to ensure that personnel preparing for a gas tester role are equipped with the knowledge to conduct gas tests for oxygen levels, flammable and toxic gases safely. This training programme also equips the delegate with knowledge to conduct gas testing within confined spaces and awareness of associated confined space hazards. Delegates will also learn about relevant legislative requirements, gas measuring and monitoring equipment and documenting gas test results.

Duration: 2 days

People: 12 (max)


  • Introduction
  • Confined space criteria
  • The hazards of operations within an oxygen deficient, toxic or flammable environment
  • Carrying out a suitable and sufficient risk assessment
  • Using safe systems of work
  • The implications of organisational and statutory requirements
  • Interpreting operational requirements
  • Selecting and using PPE and RPE
  • Working within the Permit to Work system
  • The operating principles of atmosphere monitoring and measuring equipment
  • Gas detector pre-start checks
  • Calibrating the instruments used in atmospheric testing
  • How to set up the relevant detector for each gas testing application


Please see below the 2021 course dates for this 2-day combined training course to be delivered at AquaTerra House.

  • Monday 3rd – Tuesday 4th May
  • Monday 7th – Tuesday 8th June
  • Monday 5th – Tuesday 6th July
  • Monday 2nd – Tuesday 3rd August
  • Monday 6th – Tuesday 7th September
  • Monday 4th – Tuesday 5th October
  • Monday 1st – Tuesday 2nd November
  • Monday 6th – Tuesday 7th December


To enquire about training delivery at your own premises/site, please place these requests into the form below.


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