When working at an industrial site, it’s vital that employees know what dangers could lurk unseen in the air around them. Most gases aren’t immediately harmful in low concentrations, but certain gases can become a big problem if concentrations increase.

A confined space is one place employees must be extra careful about entering. A confined space typically has poor ventilation, meaning any chemicals in the air are more likely to accumulate. Here’s what you need to know about gas detection in confined spaces.

What Counts as a Confined Space?

According to OSHA, a confined space is large enough for a person to enter with their whole body and has limited means of access. Here are some things OSHA considers to be confined spaces:

• Tanks
• Silos
• Hoppers
• Vaults
• Pits

None of these spaces are designed for people to occupy except when performing necessary jobs, like maintenance or repair work. Because of their design, these spaces don’t need to meet the requirements for continuously-occupied spaces like offices and homes.

What Makes Confined Spaces Dangerous?

Three things make confined spaces dangerous for workers: lack of oxygen, toxic fumes, and fire risks. Because these spaces are often sealed off, poor ventilation enables toxic fumes to build up. These chemicals may also reduce the percentage of oxygen in the space, making it doubly dangerous for workers who enter.

Aside from the air supply risks, there is also a risk of fire. Sometimes, confined spaces harbor explosive gases that can endanger workers. Additionally, if a fire does break out, such confined spaces have limited escape routes.

How Gas Detection Can Protect You

Gas detection in confined spaces is crucial since you may not be able to leave a dangerous space quickly. Carrying a formaldehyde gas monitor or a multigas detector can help alert you to dangerous gases nearby or tell you when oxygen levels are low. Take a look at our formaldehyde detectors at TG Technical Services and increase your personal protection in confined spaces.