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Control measure
Implement appropriate entry control procedures

Control measure knowledge

The elevated level of risk associated with working within a pressurised atmosphere will necessitate an appropriate level of command and control. Liaison with the responsible person at the scene will be of critical importance to the safe resolution of the incident. Entry control procedures should be based on a risk assessment of the potential for a lower working duration of self-contained breathing apparatus (SCBA) equipment.

Strategic actions

Fire and rescue services should:
  • Establish appropriate emergency arrangements at locations carrying out pressurised atmosphere work
  • Gather information about the location and extent of pressurised atmosphere work and the location of the man lock door and air lock at the pressurised working chamber

Tactical actions

Incident commanders should:
  • Identify and communicate any fire loading and accelerated combustion in the pressurised atmosphere
  • Implement entry control and emergency arrangements based on the assessment of risk at incidents involving pressurised atmospheres
  • Be aware that the use of breathing apparatus (BA) in a pressurised atmosphere may have an effect on the working duration of the BA set