Atmospheric testing

Hazards

• Measurement of oxygen, flammable, and toxic conditions before and during hazardous-space work.

Controls

• Use calibrated direct-reading instruments in the required order and locations and document continuous or periodic results.

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

Use calibrated direct-reading instruments in the required order and locations and document continuous or periodic results.

Explore related entries

• Confined-space attendant
• Lower explosive limit