When is oxygen (O2) testing typically conducted?

Oxygen testing is a critical safety measure, particularly in environments where air quality may be compromised, such as confined spaces. Conducting oxygen testing during any examination ensures that workers are aware of the oxygen levels present in their work area, which is essential for preventing asphyxiation and other health hazards associated with low oxygen concentrations. This practice is important not only at the start of a specific operation but also at various intervals during any kind of work that might affect or change the air quality.

In confined spaces, for instance, the risks are heightened due to limited ventilation, making regular oxygen testing vital, as conditions can quickly change. Testing solely in emergencies or only at the start does not sufficiently protect workers, as oxygen levels might fluctuate throughout the operation. Regular testing during examinations provides ongoing assurance of a safe working environment and is a best practice in ensuring worker safety within environments that may pose respiratory risks.