The purpose of a temporary refuge shelter (or safe haven, H2S refuge shelter, or shelter in place) is to keep you safe when a chemical release or blast cause severe health effects. Toxic gases produced from an explosion or loss of containment, when inhaled, can lead to disorientation, incapacitation or death.
Two protective actions commonly used in the event of a blast or chemical release are evacuation or to seek temporary refuge in a shelter in place or safe haven. Time, size of the hazard, and location are just a few variables which can impact your ability to evacuate safely. When evacuation is not possible, the shelters will provide a safe alternative and are an essential part of emergency management.
Installation protective shelters such as safe havens, blast-resistant buildings and SIPs, is a mitigation control to reduce the loss of life, and damage to property and equipment, when preventative controls fail, When it comes down to it, these shelters help to improve survivability.
Two protective actions commonly used in the event of a blast or chemical release are evacuation or to seek temporary refuge in a shelter in place or safe haven. Time, size of the hazard, and location are just a few variables which can impact your ability to evacuate safely. When evacuation is not possible, the shelters will provide a safe alternative and are an essential part of emergency management.
Installation protective shelters such as safe havens, blast-resistant buildings and SIPs, is a mitigation control to reduce the loss of life, and damage to property and equipment, when preventative controls fail, When it comes down to it, these shelters help to improve survivability.
When the gas protection function is enabled, the high-pressure air would be depressed by depressurizing system and then fresh air would be supplied to the main room. A micro-positive pressure of 50pa would be kept in the main room and 25pa in the air-lock area. Due to the internal pressure in the temporary refuge shelter is slightly higher than the atmosphere pressure, the internal air will vent through the check valve and the hazardous gas will be blocked outside.
Control room of temporary refuge shelter, toxic gas refuge cabin
Temporary refuge shelter, Toxic gas refuge cabin, H2S refuge shelter
The toxic gas refuge design will comply to the following main features:
a) The TGR must be designed for a H2S atmosphere.
b) TGR is provide protection against fire for one hour.
c) TGR will resist to external Heat Stress due to fire of inflammable gas. No internal Heat Stress has been
considered, due to the inflammable gas detectors installed onboard which will automatically shut down auxiliary systems and dampers of the System which could permit:
- the circulation of gas inside the HVAC system.
- fire igniting sparks (electric contacts not rated explosion proof).
d) TGR will provide recovery to POB in case of detection of gas mix including at least: H2S and hydro-carbon Lower Explosion Limit (LEL) and Temporary smoke with particles suspension.
e) TGR will allow to provide temporary medical assistance to injured personnel who cannot use standard means of survival.
f) TGR will allow to provide temporary medical assistance to personnel hosted inside the hospital.
g) The System shall be completely automatic.
a) The TGR must be designed for a H2S atmosphere.
b) TGR is provide protection against fire for one hour.
c) TGR will resist to external Heat Stress due to fire of inflammable gas. No internal Heat Stress has been
considered, due to the inflammable gas detectors installed onboard which will automatically shut down auxiliary systems and dampers of the System which could permit:
- the circulation of gas inside the HVAC system.
- fire igniting sparks (electric contacts not rated explosion proof).
d) TGR will provide recovery to POB in case of detection of gas mix including at least: H2S and hydro-carbon Lower Explosion Limit (LEL) and Temporary smoke with particles suspension.
e) TGR will allow to provide temporary medical assistance to injured personnel who cannot use standard means of survival.
f) TGR will allow to provide temporary medical assistance to personnel hosted inside the hospital.
g) The System shall be completely automatic.