Hi All,
Myself and a team mate just ran this profile today, we're in the tropics and have no problems with these run times or O2 exposures.
Not saying it is right or wrong, but it works for us and we're in moderate fitness.
V-Planner 3.72 by R. Hemingway, VPM code by Erik C. Baker.
Decompression model: VPM - B
DIVE PLAN
Surface interval = 1 day 0 hr 0 min.
Elevation = 0ft
Conservatism = + 2
Dec to 110ft (1) Nitrox 32 60ft/min descent.
Dec to 200ft (3) Trimix 14/50 60ft/min descent.
Dec to 300ft (5) Trimix 14/50 60ft/min descent.
Level 300ft 15:00 (20) Trimix 14/50 1.41 ppO2, 119ft ead, 133ft end
Asc to 220ft (22) Trimix 14/50 -30ft/min ascent.
Stop at 220ft 0:20 (23) Trimix 14/50 1.07 ppO2, 82ft ead, 93ft end
Stop at 200ft 2:00 (25) Trimix 14/50 0.99 ppO2, 73ft ead, 83ft end
Stop at 180ft 2:00 (27) Trimix 14/50 0.90 ppO2, 64ft ead, 73ft end
Stop at 160ft 3:00 (30) Trimix 14/50 0.82 ppO2, 55ft ead, 63ft end
Stop at 140ft 2:00 (32) Trimix 14/50 0.73 ppO2, 46ft ead, 53ft end
Stop at 130ft 3:00 (35) Nitrox 32 1.58 ppO2, 107ft ead
Stop at 100ft 1:20 (37) Nitrox 32 1.29 ppO2, 81ft ead
Stop at 90ft 2:00 (39) Nitrox 32 1.19 ppO2, 73ft ead
Stop at 80ft 3:00 (42) Nitrox 32 1.09 ppO2, 64ft ead
Stop at 70ft 3:00 (45) Nitrox 32 1.00 ppO2, 56ft ead
Stop at 60ft 4:00 (49) Nitrox 32 0.90 ppO2, 47ft ead
Stop at 50ft 5:00 (54) Nitrox 32 0.80 ppO2, 38ft ead
Stop at 40ft 8:00 (62) Nitrox 32 0.71 ppO2, 30ft ead
Stop at 30ft 11:00 (73) Nitrox 32 0.61 ppO2, 21ft ead
Stop at 20ft 10:00 (83) Oxygen 1.60 ppO2, 0ft ead
Stop at 20ft 2:00 (85) Nitrox 32 0.51 ppO2, 13ft ead
Stop at 20ft 10:00 (95) Oxygen 1.60 ppO2, 0ft ead
Stop at 20ft 2:00 (97) Nitrox 32 0.51 ppO2, 13ft ead
Stop at 20ft 8:00 (105) Oxygen 1.60 ppO2, 0ft ead
Surface (105) Oxygen -30ft/min ascent.
Off gassing starts at 237.7ft
OTU's this dive: 127
CNS Total: 91.2%
2975.6 ltr Trimix 14/50
1244.0 ltr Nitrox 32
452.7 ltr Oxygen
4672.3 ltr TOTAL
I think the whole CNS clock needs to be relooked at, too many variances that can come into effect, environmental factors, physical condition of divers etc.....
Bottom RMV was 12 litres per minutes, miniscule current in the shallows, so a 10 litre RMV was calculated.