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In Reply to: RE: Tube Handling posted by mhardyman on July 29, 2021 at 17:47:30
Semiconductor Steppers for photolithography have smiilar rules of handling the lamps.
Lamps were replaced as OUTPUT fell.
Cleaning the mirrors and other internal optics of these critical pieces of equipment was NOT for the faint of heart.
And yes, finger oils and other contamination resulted in various nasties which included mopping up a MERcURY SPILL
this took place in a 'class 10' room.....10 particles of dust of a certain size PER CUBIC FOOT of air.
Entire ceiling is an air handler / HEPA filter system....
Too much is never enough
Follow Ups:
When I started we used carbon arc assemblies. Those were use in WW2 and before to light the sky! Ours were used indoors and exhausted indoors. Nasty. Thanks dawg we moved on...
The bulbs I used in my job were Mercury Arc Lamps in a fused quartz 'envelope'.
I've always wanted to RENT one of the old 60" Carbon Arc lights and experiment with Exterior Illumination. In MY town? No laws or ordinance limit such lighting.
Too much is never enough
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