
Control measure
Containment: Cryogenic materials
TRAINING SPECIFICATION
Knowledge and understanding
Control measure element | Learning outcome |
---|---|
Contain cryogenic materials |
Understand:
Refer to hazard – Flammable vapours: Unignited |
Practical application
Control measure element | Learning outcome |
---|---|
Contain cryogenic materials |
Demonstrate the ability to:
|
Control measure knowledge
Once released from containment there is no way to return cryogenic materials to their containers. The cryogenic liquid will absorb heat from its surroundings, enabling gas to form or boil. High concentrations of gas can lead to depleted or enriched oxygen atmospheres and flammable vapours at hazardous concentrations.
The only options to re-establish a safe atmosphere are to disperse or contain the gases that have already evaporated and/or prevent the release of any further cryogenic liquid.
See Hazard – Flammable vapours (unignited) for further information.
Strategic actions
Provide procedures and support arrangements regarding the hazards that may be encountered and actions to take to manage releases of cryogenic materials
Ensure that personnel have access to subject matter experts with a thorough understanding of the specific hazards presented by cryogenic materials
Consider providing access to appropriate monitoring equipment to assist with managing cryogenics materials
Tactical actions
Attempt to contain the spill or release of any cryogenic substances as close to the source as possible
Consider using appropriate monitoring equipment for cryogenic materials
Establish whether any infrastructure is in contact with the cryogenic liquid and any impact on its integrity
Consider using water to freeze a small, slow leak if there are no water reactivity issues
Consider dispersing cryogenic gases using water sprays
Consider covering the cryogenic liquid pool (e.g. using a tarpaulin or foam)
For liquid oxygen spills, determine the potential flammability of the mixture of materials
- Control measureSubstance identification: Cryogenic materials
- Control measurePersonal protective equipment (PPE): Cryogenic materials