A professional who tends equipment that burns condensed black liquor into black ash. Respnsibilities include:

• Turns valves to regulate spray of black liquor into cyclone drier and flow of air through drier to dry black liquor to specified concentration.
• Determines moisture content of liquor, using moisture testing equipment.
• As directed, turns rheostat to adjust mechanism in mixing tank to feed salt cake into black liquor prior to burning.
• Turns valves as directed to channel steam into evaporators or into main line.
• Pushes steam lance through boiler tubes or turns crank that rotates steam jets through boiler to blow out soot and sludge.
• Scrapes sludge from interior of furnace, using scraper and rake.