TABLE D: Contingency scenario 3, total failure of deco gas, decompress on air
Depth (m)	Time (min)	Ambient Pressure (bar)	Gas	Gas Used (litres)
50	30	6	air	3600
Ascend 50 to 18	3	6	air	360
18	1	2.8	air	56
15	3	2.5	air	150
12	6	2.2	air	264
		Total Air (RMV 20 l/min)		4430
9	8	1.9	air	228
6	6	1.6	air	144
4.5	43	1.45	air	935
	Total Air (RMV 15 l/min)			1307
	Total air (bottom & deco stops)			5737