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Original Message
RE: Tube Handling
Posted by pictureguy on July 29, 2021 at 18:13:41:
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....