Hydrogen *can* be dangerous. I've never heard of any horror
stories in the jewelry field, maybe that's because we were all
so scared by the supplier's warnings. One thing I've been told
(and never understood) is to never let your tank become
completely empty, replace it with a few lbs of pressure left.
And open the main valve very slowly. I'm just repeating what I
was told, not from personal experience.
I'll throw my 2 cents worth in here if I may. In general it is
good to return all your tanks with a bit of pressure left. If you
maintain your tanks at a positive pressure, there can by no issue
of atmosphere getting into the tanks. This is to prevent
condensation in the thank and possible rust formation. ( well
that's the reason for SCUBA anyway )
BTW: I heard from a chemist friend of mine that platinum is a
catalyst for H2, such that blowing H2 accross platinum would
cause a spontaious ignition... Has anyone heard this? Of course
he could be talking about elemental platinum, not an alloy.
/, \'. _..-' , ,--...--'''
< \ .`--''' ` /| Tom Vanderputten
`-,;' ; ; ; firstname.lastname@example.org
__...--'' __...--_..' .;.' Systems Development
(,__....----''' (,..--'' Unix hacker at Large
vi is my shepherd; i shall not font.
"People who are more than casually interested in computers
should have at least some idea of what the underlying
hardware is like. Otherwise the programs they write will be
pretty weird." D. Knuth.