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Real Life Story
Here is a real life experience. I always kept my (dead man) bombarder switch
under the edge of my table so it would more difficult to accidentaly turn on.
One of my workers was filling a unit, he had one hand on the tank valve and
somehow his knee hit the bombarder switch. With the system filled with neon
the electricity flashed back through the glass manifold to the tank to my
worker. It burned two holes in his body an he went into convulsions on the
floor. He lived . True a grounding electrode probably would have saved him
this shock. Grounding the tanks would have been better and the best, in my
opinion, is to put the switch were the operator can not touch the manifold
and turn on the switch. That's what I did. It's worked for 12 years. David
Ablon