Lasers Etching/engraving, Gas, welding, optical crystalline and other medical liquid and surgery, communications research lasers Microwave Drying wood, 915 and heaters paper, film, inks; 2450 MHZ (including thawing, cooking, microwave baking, ovens) dehydrating, pasteurizing, and sterilizing foodstuffs; curing plastics; solvent desorption Plasma Chemical milling; 0.1-27.12 processors nitriding steel; MHZ; polymerization; consider modifying polymer potential for surfaces; exposure to depositing and plasma hardening gases coatings and films; etching, cleaning, or stripping photoresist. Radar Acquisition and 1-15 GHZ; tracking; air and usually PW auto traffic control; marine uses; surveillance Spectroscopic Excite emissions 2.45 GHz instruments from used in quantitative analysis Welding Production of pipe, tube, and beam; spot 0.4-100 welding MHZ with harmonics * Not all sources shown in this table are in the electromagnetic frequencies covered by ERTK. APPENDIX D Stress evaluation – heat Heat stress may occur year round in areas with heat producing equipment such as in foundries, kitchen, or laundries. In Minnesota, high temperatures and humidity’s are common during the summer with daily temperatures routinely varying to 30 degrees. This variation does not always allow people to become acclimatized and stay acclimatized, thereby increasing the risk of heat stress.
Lasers Etching/engraving, welding, optical and other medical surgery, communications research Gas, crystalline liquid and lasers Microwave heaters (including microwave ovens) Drying wood, paper, film, inks; thawing, cooking, baking, dehydrating, pasteurizing, and sterilizing foodstuffs; curing plastics; solvent desorption 915 and 2450 MHZ Plasma processors Chemical milling; nitriding steel; polymerization; modifying polymer surfaces; depositing and hardening coatings and films; etching, cleaning, or stripping photoresist. 0.1-27.12 MHZ; consider potential for exposure to plasma gases Radar Acquisition and tracking; air and auto traffic control; marine uses; surveillance 1-15 GHZ; usually PW Spectroscopic instruments Excite emissions from used in quantitative analysis 2.45 GHz Welding Production of pipe, tube, and beam; spot welding 0.4-100 MHZ with harmonics * Not all sources shown in this table are in the electromagnetic frequencies covered by ERTK. APPENDIX D Stress evaluation – heat Heat stress may occur year round in areas with heat producing equipment such as in foundries, kitchen, or laundries. In Minnesota, high temperatures and humidity’s are common during the summer with daily temperatures routinely varying to 30 degrees. This variation does not always allow people to become acclimatized and stay acclimatized, thereby increasing the risk of heat stress.
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