What should be avoided to ensure safety in a confined space?

To ensure safety in a confined space, the presence of harmful gases should be avoided. Confined spaces often pose unique hazards due to their limited entry and exit points and can become quickly hazardous if gases accumulate. These could include toxic substances or those that displace oxygen, leading to asphyxiation or other health risks.

Monitoring for harmful gases and ensuring that the atmosphere within the space is safe before entering is crucial. This involves the use of gas detection equipment and creating a safe work environment. If harmful gases are present, appropriate precautions must be taken, which may include ventilation, the use of respiratory protection, and a clear area evacuation plan.

In contrast, proper ventilation, safety gear, and an emergency exit plan are all measures that enhance safety in confined spaces rather than factors to be avoided. Proper ventilation helps to dilute or remove harmful gases, safety gear provides personal protection, and an emergency exit plan ensures that personnel can evacuate quickly if something goes wrong. Hence, the presence of harmful gases is the significant risk to be avoided in these environments.