Working In Reduced Oxygen Atmospheres

The British Compressed Gases Association (BCGA) have published updated guidance for working in reduced oxygen atmospheres. The guidance provides advice and guidance to installers and premise owners where these systems are, or are about to be, fitted for the safety of those who are required to access such spaces.

Workplaces where you may encounter reduced levels of oxygen could include confined spaces such as tanks, silos, tunnels, sewers, underground vaults, etc., where lower oxygen levels exist naturally or as a consequence of reactions in the area, or places where oxygen levels have been deliberately lowered, for example, to preserve fruit or vegetables or to reduce fire risks in document stores.

The various hazards that come with a reduced-oxygen atmosphere include:

• Hypoxia (Oxygen Deficiency)
• Loss of Consciousness
• Respiratory and cardiovascular problems
• Asphyxiation

When working in reduced oxygen atmospheres, it is important to put in place precautions to keep people safe. This could include:

• Ensuring proper ventilation to maintain a sufficient supply of oxygen and to prevent the accumulation of gases that could displace oxygen.
• Providing appropriate PPE,
• For work in confined spaces, establishing and following strict confined space entry procedures. This may include pre-entry air testing, continuous monitoring, and the use of trained personnel with rescue equipment.
• Following a permit-to-work system would also be an appropriate precaution.