What 40% rule? - oh you mean the 40% rule that someone pulled out of their azz. That is all fine an dandy until a little accident and OSHA kicks a shop owner's little azz for not following their rules.
As for the too many standards - yeah there are cause shops like making up their own rules.
Again, not saying I agree with the rules but from a business point of view they should be followed especially if you want your insurance to kick in.
And all you need to do is look at the accident history this year......
OK, but look at last year.....
How about the last ten years.....
OK, at least it makes a little extra $$$ for the shop at $50 for each annual O2 cleaning. And that is what is important. Right???
And everybody knows you can't be overlooking any OSHA standard. That is why every dive shop conducting deep training establishes a decompression chamber within 5 minutes of its training site. Right????
OSHA requirement:
Paragraph (b)(2) of 29 CFR 1910.423 requires that:
For any dive outside the no-decompression limits, deeper than 100 fsw [feet of sea water], or using mixed gas as a breathing mixture, the employer shall instruct the diver to remain awake and in the vicinity of the decompression chamber which is at the dive location for at least one hour after the dive (including decompression or treatment as appropriate).
Paragraph (c)(3)(iii) of 29 CFR 1910.423 specifies that:
[The decompression chamber shall be] located within 5 minutes of the dive location.
Paragraph (b)(1) of 29 CFR 1910.426 requires that:
A decompression chamber is ready for use at the dive location.