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On Mon, 20 Jul 1998, Mike Zimmerman wrote: > I have my nitrox card and a thorough understanding of Haldanean > gas theory behind the tables. Wrote code to replicate the tables > down even to the pressure groups. Added in code to handle the > helium in the mix, but never have played with it much, set it Just curious, but how did you manage to factor Helium into Haldanean tables? -Will > > I'm fine with doubles, and a stage and a deco bottle. Ok > for shallow (say 150') mix, that should seem to be plenty. > for 150' it shouldn't seem to require a hypoxic mix, so maybe > a deco bottle would be that I need. > > Let's go agency shopping. > > Let see > > IANTD everyone's favorite.... > > Let's see, basic nitrox now... I gotta take > hmm, its not clear, but I know for the full-blown course mix you had > to have several levels of nitrox, deep air before trimix. They > now have "Intermediate Trimix" which seems to fit the bill... > They list 130' as the beginning of the zone for the mix, but > I guess they won't stop you from using it more shallow.... > > Andi.com brings up something else, and don't feel like sarching for > it... on to GUE. > > Ok start with Advanced nitrox... not sure if my IANTD basic covers > me for that.... do note that GUE lists that their advanced nitrox > diver 1 course goes below 120' to 130' . We've had the discussions > before about nitrox not being less narcotic than air. This > looks like "deep air". > > well maybe place out of that course, on to the next one... > > looking at the Technical Diver 2 course, it states that its > purpose is to train divers in the 130-200' range. Of 8 dives, 2 will > use Helium. That's 6 dives that while are not "deep air", they > look like "deep narcosis". > > Also I'm not clear that I can get mix fills after this class? > since the NEXT class is entitled Mixed Gas, I'm going to assume not. > Be glad to find out I am wrong. > > So with GUE as well, I have 2 more course to take. Maybe 3 if > I don't place out of the Advanced nitrox one (advanced implies > there was some "basic" as a pre-req to me). > > Actually its not that I want to dig at these course guidelines, > its that people have been yelling about "deep air" for years > now, but at the same time, even with GUE, when you say ok give me > an alternative, let me learn trimix for shallow depths... you get > nothing. Let me take a class to learn mix for 100-150' depths. > Shouldn't need anything hypoxic at those depths. Should need what, > maybe one deco mix? Why should a diver need anything but basic nitrox > before taking such a course. Make the math and theory rigorous, > but offer the course. Flunk those that cannot prove they understand the > theory. > > so where are the alternatives? Why can't we remove all these hoops > before someone will certify you for shallow mix? > > Make it accessible, people will use it. Put multiple expensive > certifications in the way, and people will not. Not because > they don't want to, but becuase shallow mix isn't worth $2000 > in course fees and 2 weeks of my vacation time. It ain't that > friggin complicated. > > Ho hum, sure this will turn into a fun set of replies. > > Mike > > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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