Flintkote mine fatality - Canada

[Doppler]

if he used 100 % at 40' how much pressure drop from a 3000 fill would their be till he blacked out?

Impossible to say. I have seen people breathe pure oxygen at 10 metres (a little over 30 feet) for 25 minutes... in a wet pod but still, human physiology is a strange variable.

Anyone know the diver's name?

 

[ianr33]

if he used 100 % at 40' how much pressure drop from a 3000 fill would their be till he blacked out?

Deco plan would most likely have been to switch to 50% at 70 feet. Stops at 70,60 and 50 would be a few minutes so not much gas used. (And all of this is meaningless if the starting pressure was not known)

I'm sure it's quite possible to breathe 100% O2 at 70 feet (~ pO2 of 3.1) for a few minutes.

This is obviously all total speculation,but breathing the wrong gas IS a real easy way to kill yourself.

---------- Post Merged at 01:05 PM ---------- Previous Post was at 12:58 PM ----------

This is a likely deco plan for the dive. (V-planner, +2 )

Switch to 50% at 70 feet. 2 minutes at 70, 1 at 60, 3 at 50 before ascending to 40 feet.

Dec to 200ft (3) Trimix 18/45 60ft/min descent.
Level 200ft 11:40 (15) Trimix 18/45 1.24 ppO2, 76ft ead, 95ft end
Asc to 180ft (15) Trimix 18/45 -30ft/min ascent.
Level 180ft 10:00 (25) Trimix 18/45 1.14 ppO2, 66ft ead, 84ft end
Asc to 110ft (28) Trimix 18/45 -30ft/min ascent.
Stop at 110ft 1:00 (29) Trimix 18/45 0.76 ppO2, 33ft ead, 45ft end
Stop at 100ft 1:00 (30) Trimix 18/45 0.71 ppO2, 29ft ead, 40ft end
Stop at 90ft 1:00 (31) Trimix 18/45 0.66 ppO2, 24ft ead, 34ft end
Stop at 80ft 2:00 (33) Trimix 18/45 0.60 ppO2, 19ft ead, 29ft end
Stop at 70ft 2:00 (35) Nitrox 50 1.53 ppO2, 32ft ead
Stop at 60ft 1:00 (36) Nitrox 50 1.38 ppO2, 26ft ead
Stop at 50ft 3:00 (39) Nitrox 50 1.24 ppO2, 19ft ead
Stop at 40ft 3:00 (42) Nitrox 50 1.09 ppO2, 13ft ead
Stop at 30ft 6:00 (48) Nitrox 50 0.94 ppO2, 7ft ead
Stop at 20ft 6:00 (54) Oxygen 1.59 ppO2, 0ft ead
Stop at 10ft 11:00 (65) Oxygen 1.29 ppO2, 0ft ead
Surface (65) Oxygen -30ft/min ascent.

 

[Mark Derail]

I'll ask local pros about this. This is in my backyard, so to speak.

 

[Quero]

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A ScubaBoard Staff Message...

Discussion of suitable gas mixes for deep diving has been split off to a new thread here:
http://www.scubaboard.com/forums/ad...s-deep-diving-split-i-thread.html#post6486591

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