What should be done if a hazardous atmosphere is detected in a confined space?

When a hazardous atmosphere is detected in a confined space, the correct course of action is to immediately cancel all entry. This response is critical because hazardous atmospheres can pose significant risks, including toxic exposure, asphyxiation, or explosive conditions. Prioritizing worker safety means that no one should enter the space until the hazards are fully assessed and mitigated.

Continuing with entry, even with caution, can lead to severe consequences if the situation is not appropriately managed. Wearing more personal protective equipment (PPE) may offer some level of safety, but it does not eliminate the inherent risks of hazardous atmospheres. Similarly, while it's essential that only trained personnel enter confined spaces to ensure safety procedures are followed, this does not address the immediate danger posed by the hazardous conditions present.

Ensuring the safety of workers by canceling entry is an essential component of maintaining safe practices in confined spaces as outlined by OSHA regulations.