http://epauniversity.com/2009/05/09/hello-world/ The Swamp School's Health & Safety Training Mon, 15 Aug 2011 03:22:32 +0000 hourly 1 http://wordpress.org/?v=3.2.1 http://epauniversity.com/2009/05/09/hello-world/comment-page-1/#comment-7 Tony Petrik Thu, 30 Jul 2009 20:42:31 +0000 http:/?p=1#comment-7 I deal with scalant and it smells like something gone bad. But we actually use it to substitute for a soft water system. I work for semitool semiconductor facility. I have cleaned up many spill from sulfuric 98% which isn't bad unless it starts reacting with the wax on the tiles and then the tiles itself. To Hf which is the worst. I was cleaning an HF spill had to suit up and wear an scba. I cleaned it for 35 minutes running water on this unit. It still came back as a 0-1 on ph. 35 minutes. Finally we noticed that H20 was not going to do it so finally put crushed calcium carbonate down to powder form and nutrilized the Flouride. So don't be stupid like me and use calcium carbonate. I deal with scalant and it smells like something gone bad. But we actually use it to substitute for a soft water system. I work for semitool semiconductor facility. I have cleaned up many spill from sulfuric 98% which isn’t bad unless it starts reacting with the wax on the tiles and then the tiles itself. To Hf which is the worst. I was cleaning an HF spill had to suit up and wear an scba. I cleaned it for 35 minutes running water on this unit. It still came back as a 0-1 on ph. 35 minutes. Finally we noticed that H20 was not going to do it so finally put crushed calcium carbonate down to powder form and nutrilized the Flouride. So don’t be stupid like me and use calcium carbonate.

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