Skip to main content

Developed and maintained
by the NFCC

Control measure

Safe system of work: Pressure systems and equipment

Control measure knowledge

Operators should be made aware of the presence of responders before personnel enter the hazard area.

Isolating power supplies

It may be necessary to isolate power supplies to pressure systems and equipment, especially if there is a potential hazard to personnel or other emergency responders. Where possible, advice or assistance should be requested from the responsible person; they may be able to isolate the power supplies for the pressure system.

Depressurising systems

Safety valves may be fitted to the equipment to relieve excess pressure; it may be necessary to use these to depressurise equipment to reduce the risk of a pressurised system bursting.

Where possible, advice or assistance should be requested from the responsible person; they may be able to depressurise the system.

Strategic actions

Fire and rescue services should:
  • Ensure that information about the type, quantity and location of pressurised systems is included in Site-Specific Risk Information (SSRI) if appropriate, along with procedures for isolating power supplies

Tactical actions

Incident commanders should:
  • Consider requesting advice or assistance from the responsible person to isolate power supplies or depressurise the system considering  any consequences of this action

  • Consider requesting that the use of pressurised systems is restricted or prohibited
  • Consider isolating power supplies for the pressure system or equipment considering any consequences of isolation

  • Ensure that operators are made aware of the presence of personnel and other responders