Risk Assessment

Many factors need to be evaluated when looking for hazards in a confined space. There is smaller margin for error. An error in identifying or evaluating potential hazards can have serious consequences. In some cases, the conditions in a confined space are extremely hazardous regardless of the circumstances. In other cases, the conditions become life-threatening under an unusual combination of circumstances.

This section covers some of the areas of concern that the risk assessment should evaluate.

Size of Entrance and Exit

During a risk assessment, it is important to take into consideration the size of the entrance and exit. The entrance and exit of the confined space might not allow the worker to get out in time should there be a flood or collapse of a free-flowing solid.

Self-Rescue

During the risk assessment, it is important to determine what barriers are present that might limit the possibility of a worker's self-rescue.

Rescue Plan

Where self-rescue is not possible, it is important to put a rescue plan into place. Rescue of the victim is more difficult in a confined space. The interior configuration of the confined space often does not allow easy movement of people or equipment within it.

Because confined spaces often have variable and unpredictable conditions, the hazard and risk identification and assessment processes are extremely important. Risk assessments must be taken seriously each time they are conducted.

Ventilation

The interior configuration of the confined space does not allow easy movement of air within it. Natural ventilation alone will often not be sufficient to maintain respirable air.

Changing Conditions

Conditions can change quickly, affecting the stability of the space, air quality, and other potentially life-altering factors.

Impact of Area Outside of the Confined Space

The space outside the confined space can impact the conditions inside the confined space and vice versa.

Work Activities

Work activities that take place during a project may introduce new hazards that were not present before the project started.

Communication Barriers

Lack of communication between the workers in the space, the attendant, and the emergency response team can create confusion.

To learn more about Confined Space Competent Person/Supervisor visit our Confined Space Competent Person/Supervisor Online Training web page.