08-06-2011, 11:48 PM
Hmm - thought-provoking, if nothing else; certainly frightening.
However, there is one detail that puzzles me: perhaps I need enlightening: if you can do so, please do.
If a technician prepares to do maintenance work on such plant and wears the requisite protective clothing, does said clothing include a full-face totally black face mask? If so, how can he then see what he is doing?
Moreover, judging by the sheer intensity of the arc & flash in that video, without a totally black face mask, surely the technician will suffer eye damage; possibly blindness.
The reason I say all this is that when I last did some arc welding using such a face mask, (albeit many years ago), I could not see anything at all until the arc struck. It was really a question of aiming the rod at the point where the arc was to be struck, but not making contact, then flipping down the face mask and quickly striking the arc. Only then could I see what I was doing.
Al.
However, there is one detail that puzzles me: perhaps I need enlightening: if you can do so, please do.
If a technician prepares to do maintenance work on such plant and wears the requisite protective clothing, does said clothing include a full-face totally black face mask? If so, how can he then see what he is doing?
Moreover, judging by the sheer intensity of the arc & flash in that video, without a totally black face mask, surely the technician will suffer eye damage; possibly blindness.
The reason I say all this is that when I last did some arc welding using such a face mask, (albeit many years ago), I could not see anything at all until the arc struck. It was really a question of aiming the rod at the point where the arc was to be struck, but not making contact, then flipping down the face mask and quickly striking the arc. Only then could I see what I was doing.
Al.
