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OPITO Certified Gas Monitor Initial Theoretical and Further Workplace Training and Assessment

gas monitor training

The aim and objectives of the Gas Monitor training is to ensure that personnel preparing for a gas monitor role involved in providing safety watch duties by the ongoing monitoring of a hot work site are equipped with the relevant knowledge to safely carry out the role

This training program is designed to meet the initial training and knowledge assessment requirements for personnel preparing to work as Gas Monitors. In the workplace, persons undertaking Standby/Safety Watch duties at the entrance to a confined space shall be an Authorised Gas Tester or an Authorised Gas Monitor.


The duty holder/employer is responsible for ensuring that personnel appointed to the Gas Monitor role have received sufficient training and gained relevant experience to undertake the role(s) competently and safely. The duty holder/employer must ensure that, apart from the provision of theory training, that further workplace training is provided and workplace competence assessment is conducted prior to formal appointment.

  • Duration: 6 hours
  • Validity: 3 years
  • Prerequisites: None
  • Exam: Candidates must achieve a pass mark of 80% or higher in order to successfully achieve the Gas Monitor certificate

opito gas monitor

Gas Monitor Training




Gas Monitoring for Hot Work Sites

Providing Safety Watch Duties for Hot Work Sites

  • Hot work (any operation involving naked flames or producing heat and/or sparks or any operation that has spark potential)
  • Confined space criteria, to include - the definition of a confined space as per National Regulations and Approved Codes of Practice (ACOPs) & not designed for continuous worker occupancy
  • The type of operations being tested for flammable and toxic gases
  • Responsibilities of the Fire Watch
  • Responsibilities of the Stand By person
  • Responsibilities of the Gas Monitor role
  • How to use and care for PPE for different toxic and flammable gases through risk assessment
  • How to work within the Safe System of Work
  • The hazards and properties of flammable and toxic gases
  • The behavior of different gases – to include heavier than air & lighter than air behavior and “neutral buoyancy” effect
  • How a flammable gas or vapor clouds could arrive at the hot work site
  • Impact of environmental changes on working condition
  • The importance of regular communication
  • Sources of assistance and specialist support
  • Completion of relevant documentation
  •  The importance of checking that the controls on the equipment are as specified

Disclaimer: For general information purpose only - please check with OPITO for the latest and accurate information on Training Standards

Last Updated: May 23, 2021