Lead oxide forms on the surfaces of metallic lead bricks used for radiation protection; DOE measurements indicate that merely lifting these bricks onto a cart for four hours may expose workers to elevated airborne lead exposures near to or in excess of the OSHA PEL of 50 =B5g/m3.
So...two questions for Friday...--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas1) If you found a large stack of lead sheets...sitting in a storage area for some time (who knows how long!?)...would you be concerned about lead dust in the immediate area, say the surrounding floor? I understand that grinding, sanding, filing, etc creates lead dust but this situation doesn't fit any of those...I cannot find any references so in case I'm imagining that just because it's soft, dust forms over time....I wanted to check...2) A student asked me if there were any chemicals for which you would NOT want to use water in case of chemical exposure. I did a quick search and the Canadian CCOHS (their OSHA) advises "...Note that the manufacturer/supplier .. may recommend an alternative agent in exceptional cases if water is clearly inappropriate." I have read plenty of SDS's in my time but have never seen an SDS state anything other than using water as the first step. Has anyone ever encountered any other initial instructions for dermal or eye exposure? (Of course there may be additional steps AFTER water flushing, like use of calcium gluconate gel, etc)...MANY THANKS and happy Friday to all!
Margaret--Margaret A. Rakas, Ph.D.
Lab Safety & Compliance Director
Clark Science Center
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