Guide to Gas Detectors in Confined Spaces

A comprehensive overview of gas detectors, their functions, and best practices for using them safely in confined spaces.

Choosing and Using Gas Detectors

Selection: Ensure proper training on the chosen gas detector from reputable manufacturers.

Functionality: Most gas detectors perform similar functions, primarily checking for toxic gases, vapours, and oxygen levels.

• Initial Checks: Turn on in fresh air to verify sensor functionality; alarms will indicate any sensor failures.
• Settings: Adjust settings including peak readings to monitor highest concentration levels.
• Additional Features: Some detectors include motion detectors and LED indicators (green for normal, red for emergency).
• Calibration: Regular calibration and maintenance are essential; ensure test certificates are up to date.
• Continuous Operation: Due to long battery life, it's practical to keep detectors on throughout the job duration.

Using Gas Detectors Effectively

Prior to Entry: Conduct gas monitoring before entering a confined space, ensuring safety from any gas leaks.

Ventilation: After ventilation, wait at least 10 minutes for air to stabilize before conducting gas monitoring.

Monitoring Procedure: Lower gas monitors using lines, testing top, middle, and bottom due to varying gas weights.

Emergency Response: If gas is detected, alert others by shouting "Gas! Gas! Gas!" to warn and exhale any inhaled fumes.