What is a common requirement for entry into a confined space?

Atmospheric testing is a fundamental requirement for entry into a confined space because it ensures the safety of workers by assessing the air quality before anyone enters. Confined spaces may contain hazardous atmospheres, such as toxic gases, low oxygen levels, or flammable substances. Therefore, conducting thorough atmospheric testing helps identify any potential risks present in the environment and allows for the implementation of necessary safety measures, such as ventilation or the use of personal protective equipment.

This aspect of safety is critical to prevent incidents such as suffocation or exposure to harmful substances. Ensuring there are adequate oxygen levels and that no hazardous gases are above permissible limits is a primary safety protocol in confined space operations. By verifying atmospheric conditions, workers can make informed decisions about entering or preparing the space for safe work conditions.