SCBA
Self Contained Breathing Apparatus (SCBA) is a portable breathing apparatus used by the rig crew for protection in H2S environment. SCBA provides effective face seal and oxygen supply for 30 minutes to avoid inhaling poisonous gas. It provides unrestricted movement for carrying out emergency search and rescue operations. More physical work consumes more air and hence SCBAs are equipped with an alarm when a quarter air supply remains in the equipment to have enough escape time.