A professional who controls chemical reaction vats and mixing equipment to compound pulp bleaching solution, following specifications. Respnsibilities include:

• Starts conveyor and opens valve to dump specified quantities of lime or sodium hydroxide and water into mixing tank to make lime slurry.
• Starts pump and turns valve to start flow of chlorine and lime slurry to chlorinating tanks.
• Adjusts controls to regulate temperature of solution to prevent adverse chemical reactions.
• Starts mixing machine in tank to mix bleaching solution.
• Sprinkles indicator solution on top of mixture in tank or makes titration test to determine completion of chemical reaction.
• Starts pumps to transfer bleach solution to storage.
• May control reaction cells and absorption tower in which chlorine dioxide bleaching gas is formed from calcium chlorate and sulfurous acid.
• May operate conveyor to remove bulk lime from railroad cars to storage bins.
• May connect pipe and hose lines to tank cars containing chlorine gas.