> On Saturday, March 23, 2002 11:51 PM, Robert Delfs wrote:

>
> G'Day, Robert.  As Mike's already pointed out there really isn't any hard
> and fast limit other than that the risk increases proportionally.
>
> A lot of folks also confuse 'oxygen cleaned' with 'oxygen compatible'.
>
> O2 cleaned assumes that all hydrocarbons and contaminants have been
> removed. In those cases it's generally accepted that they're then safe to
> use with O2 mixes up to 50%.

A couple of very good points. David Hale can attest to the difference, right David? :-)

>
> Mike also mentioned the Atomic regulator and it's worth noting that
> titanium *may* not be the best choice in materials in regulators intended
> for use with high concentrations of oxygen! :-)

I know there was a lot of discussion about the incident in California where the diver got burned pretty
bad using an 80% mix with the Atomic. I was sufficiently convinced that the reg had been cleaned
and was considered to be servicable for O2 use and still went poof. I'd not use titanium regs with O2
now, regardless of what the manufacturer might say. :-)


>
> Strike


__
Mike Wallace
Huntsville,Ala