▁one ▁as cent , ▁thereby ▁mit ig ating ▁the ▁time - consum ing ▁and ▁compar atively ▁ris ky ▁process ▁of ▁multiple ▁decom press ions ▁normally ▁associated ▁with ▁multiple ▁non - s atur ation ▁(" b ounce ▁div ing ") ▁operations . ▁ ▁A ▁hyper bar ic ▁lif eb o at ▁or ▁hyper bar ic ▁rescue ▁unit ▁may ▁be ▁provided ▁for ▁emer gency ▁ev acu ation ▁of ▁s atur ation ▁divers ▁from ▁a ▁s atur ation ▁system . ▁This ▁would ▁be ▁used ▁if ▁the ▁platform ▁is ▁at ▁immediate ▁risk ▁due ▁to ▁fire ▁or ▁s inking , ▁and ▁allows ▁the ▁divers ▁under ▁s atur ation ▁to ▁get ▁clear ▁of ▁the ▁immediate ▁danger . ▁The ▁crew ▁would ▁normally ▁start ▁decom pression ▁as ▁soon ▁as ▁possible ▁after ▁launch ing . ▁ ▁R isk ▁management ▁R isk ▁management ▁for ▁decom pression ▁sick ness ▁involves ▁following ▁decom pression ▁sched ules ▁of ▁known ▁and ▁acceptable ▁risk , ▁providing ▁mit ig ation ▁in ▁the ▁event ▁of ▁a ▁hit ▁( d iving ▁term ▁indicating ▁sympt om atic ▁decom pression ▁sick ness ), ▁and ▁reducing ▁risk ▁to ▁an ▁acceptable ▁level ▁by ▁following ▁recommended ▁practice ▁and ▁avoid ing ▁deprecated ▁practice ▁to ▁the ▁extent ▁considered ▁appropriate ▁by ▁the ▁responsible ▁person ▁and ▁the ▁divers ▁involved . ▁The ▁risk ▁of ▁decom pression ▁sick ness ▁for ▁the ▁algorithms ▁in ▁common ▁use ▁is ▁not ▁always ▁accur ately ▁known . ▁Human ▁testing ▁under ▁controlled ▁conditions ▁with ▁the ▁end ▁condition ▁of ▁sympt om atic ▁decom pression ▁sick ness ▁is ▁no ▁longer ▁frequently ▁carried ▁out ▁for ▁eth ical ▁reasons . ▁A ▁considerable