operation SEQUENCE of temporary refuge (TR) during emergency condition

• Fire and gas detection system send an alarm
• All the personnel run to the muster point near the TR Complex
• The TR F&G system run the emergency sequence operation, close the F&G dampers and lock the external doors
• The diesel generators stop and the electric power is supplied by batteries
• The HVAC system is switched from “fresh air” mode to “full recirculation” mode.
• Is activated the compressed air pressurisation system and the BA system.
• The air lock BA washing system is ready to start
• The air lock doors are unlocked for the first mustering sequence
• A predetermined number of personnel go inside the air lock (the TR doors are still closed)
• Start the BA washing sequence inside the air lock (the air lock doors are now closed)
• A toxic gas analyser verify the absence of gas (if the gas is revealed, start an additional washing sequence)
• The TR rooms doors can be opened.
• Start another mustering sequence (during the mustering, people outside the TR complex waiting for their turn are connected with the outdoor BA Cascade system)
• People inside the TR rooms take their sit or their numbered position, waiting for the rescue vehicle or for the end of the alarm.
• In case of TR evacuation (at the end of the 2 or 3 hours of emergency capacity of the TR), will start the disembarking sequence (through the air lock with only 1 washing sequence).

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