How to define a Temporary Refuge (TR) shelter (or also known as Safe Haven Cabin | Toxic Gas Refuge (TGR) | H2S temporary Refuge Shelter)?
The Temporary refuge shelter is a place or sanctuary where persons are adequately protected while remaining in the installation in a major disaster such as chemical release, explosion, etc, it can protect people from associated risks, and people from there to communicating, monitoring and controlling equipment necessary to ensure their physical safety, and to safely and completely evacuate from there if necessary.
The temporary refuge shelter switches HVAC from fresh air mode to full recirculation mode to prevent potentially toxic gases from entering and the external gas detector activates the fire valve to close. TR will also provide a minimum breathing air concentration from the compressed air cylinder for at least 1 hour or longer. The location of the temporary shelter ensures the safety of personnel for a period to the convening of the call until the incident has been investigated and controlled or equipment has been successfully evacuated.
The temporary refuge shelter has adequate medical and welfare facilities as well as emergency communications.TR enclosures are designed for external installation and are equipped with air supply piping to the interior of the TR muster area. The TR shield control panel is designed to be installed internally within the TR area. When TR shelter went into operation, it was designed as a fail-safe system, meaning that if the shelter suffered damage or an air seal leak, clean air would leak out of the shelter instead of being inhaled by contaminated air.