IDLH

Hazards

• An atmosphere posing immediate threat to life, irreversible health effects, or escape capability.

Controls

• Do not enter without the required respiratory program, trained team, communications, backup, and rescue capability.

Personal protective equipment

• Select task-specific PPE only after hazards and higher-order controls have been evaluated.

Regional considerations

• Applicable law, permits, collective agreements, venue rules, and qualified-person decisions take precedence.

In practice

Do not enter without the required respiratory program, trained team, communications, backup, and rescue capability.

Explore related entries

• Ceiling exposure limit
• Respirator fit test