Loss of Vacuum Event Scenario
Failure of double confinement in a penetration (perhaps heating and current drive system line)
Air enters the plasma chamber
Air extinguishes the plasma with a disruption that would mobilize dust and any “easily mobilizable” tritium
Air exchanges between the plasma chamber and the “generic bypass” room that is communicating with the chamber because of density gradient between hot air inside and cooler air outside (stratified flow in the duct)
Releases depend on duct size, orientation of duct, and nature of ventilation and filtration in the generic bypass room