What would be the consequence of failing to isolate a confined space before entry?

Failing to isolate a confined space before entry significantly increases the risk of exposing workers to hazards. Isolation is a critical safety measure that ensures that any potential harmful substances, such as gases, vapors, or liquids, are removed or controlled to prevent them from entering the space where workers are operating. If this step is overlooked, there could be residual contaminants that may lead to dangerous situations such as toxic exposure, asphyxiation, or explosive atmospheres.

The isolation process typically involves the use of lockout/tagout procedures to ensure that equipment is de-energized and that any hazardous materials are properly managed. Without this precaution, workers may unknowingly enter an environment where they are unprotected from these dangers, leading to severe health risks or even fatalities. Understanding the importance of isolation emphasizes the role of proper planning and adherence to safety protocols in confined space operations.