Refuge chambers are sealed environments, built to sustain life during an emergency or hazardous situation. These safe havens provide a secure area with shelter, water, and breathable air, where personnel can remain until rescued or the hazard subsides.
More specifically, refuge chambers are closed circuit breathing apparatuses within a sealed container; where carbon dioxide and other toxins are removed, oxygen is added, and temperature and humidity are maintained, all while protecting occupants from the external threat.
The duration of these systems for hard rock mining has been set by various industry guidelines at 36 hours based on recovery periods after a truck fire, and this is extended to 96 hours for coal mining. Safe havens for petrochemical sites may only require a few hours duration based on the type of facility.
Related Article What is the Ideal Safe Refuge Chamber Duration? "Safe haven or refuge chamber duration should be determined on a risk-based approach. Every mine, construction site, plant, or facility is different and should be assessed based on its unique conditions, and the overall emergency response plan." Read More
Why is a Refuge Chamber Needed?
In industries such as mining, construction, and chemical manufacturing there is a higher potential for the atmosphere to become contaminated and unsafe. Fires, explosions, rock-falls, flooding and the release of toxic gases are just some of the types of incidents that occur all too often, despite planning and safety precautions.
In these incidents, it is essential to provide a safe location for staff to escape to, when exiting the area is no longer an option.
Although personnel may survive an immediate accident, the air can often become soiled with pollutants, smokes and toxins deeming it unbreathable. Refuge chambers will help sustain the life of personnel in an area while they wait to be rescued; providing a breathable supply of air, water and communications to the surface – ultimately saving lives.
How does a Refuge Chamber fit into a Safety and Emergency Response Plan?
Emergency refuge forms an integral part of a site’s broader Emergency Response Plan (ERP).
In emergencies, when evacuation is no-longer safe or practical, the emergency refuge is designed to provide a safe and secure ‘go-to’ area for personnel to gather and await extraction.
Government regulations across many parts of the world have incorporated refuge chambers as a critical component of site planning. However, chamber installation is just the beginning. Beyond chamber placement, training is a critical aspect of a site’s ERP. If employees understand and are familiar with when, and how to accurately use a chamber, the chances of survival are significantly improved.
Every site is different – whether it is an underground mine, petrochemical facility or transport tunnel; and this affects the style of refuge chamber required. MineARC Systems specialise in designing and custom building refuge chambers for the safe retreat of personnel.
Discover how refuge chambers fit into a companies safety culture in our recent article: “Safety drives productivity; it involves a collective effort but must be led by management. A management-led program to enhance workplace OH&S instils a positive and well-respected safety culture within the organisation.”