Tend equipment in which a chemical change or reaction takes place in the processing of industrial or consumer products. Typical equipment used are: devulcanizers, batch stills, fermenting tanks, steam-jacketed kettles, and reactor vessel

Notifies maintenance engineer of equipment malfunction. Records data in log from instruments and gauges concerning temperature, pressure, materials used, treating time, and shift production. Tests samples to determine specific gravity, composition, or acidity, using chemical test equipment such as hydrometer or pH meter. Replaces filtering media or makes minor repairs to equipment, using hand tools. Loads specified amounts of chemicals into processing equipment. Patrols work area to detect leaks and equipment malfunctions, and monitor operating conditions. Weighs, measures, or mixes prescribed quantities of materials. Draws sample of products for analysis to aid in process adjustments and maintain production standards. Drains equipment and pumps water or other solution through to flush and clean tanks or equipment. Observes gauges, meters, and panel lights to monitor operating conditions, such as temperature or pressure. Adjusts valves or controls to maintain system within specified operating conditions. Starts pumps and agitators, turns valves, or moves controls of processing equipment to admit, transfer, filter, or mix chemicals. Inventories supplies received and consumed. Assists other workers in preparing and maintaining equipment. Observes safety precautions to prevent fires and explosions.

Chemistry -- Knowledge of the chemical composition, structure, and properties of substances and of the chemical processes and transformations that they undergo. This includes uses of chemicals and their interactions, danger signs, production techniques, and disposal methods. Mechanical -- Knowledge of machines and tools, including their designs, uses, repair, and maintenance.

Operation and Control -- Controlling operations of equipment or systems. Operation Monitoring -- Watching gauges, dials, or other indicators to make sure a machine is working properly. Science -- Using scientific rules and methods to solve problems.

Problem Sensitivity -- The ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem, only recognizing there is a problem. Reaction Time -- The ability to quickly respond (with the hand, finger, or foot) to a signal (sound, light, picture) when it appears. Control Precision -- The ability to quickly and repeatedly adjust the controls of a machine or a vehicle to exact positions. Information Ordering -- The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations). Written Expression -- The ability to communicate information and ideas in writing so others will understand. Oral Expression -- The ability to communicate information and ideas in speaking so others will understand. Near Vision -- The ability to see details at close range (within a few feet of the observer). Selective Attention -- The ability to concentrate on a task over a period of time without being distracted. Deductive Reasoning -- The ability to apply general rules to specific problems to produce answers that make sense. Written Comprehension -- The ability to read and understand information and ideas presented in writing.

Controlling Machines and Processes -- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles). Monitor Processes, Materials, or Surroundings -- Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems. Inspecting Equipment, Structures, or Material -- Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects. Handling and Moving Objects -- Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things. Identifying Objects, Actions, and Events -- Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events. Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources. Evaluating Information to Determine Compliance with Standards -- Using relevant information and individual judgment to determine whether events or processes comply with laws, regulations, or standards. Processing Information -- Compiling, coding, categorizing, calculating, tabulating, auditing, or verifying information or data. Communicating with Supervisors, Peers, or Subordinates -- Providing information to supervisors, co-workers, and subordinates by telephone, in written form, e-mail, or in person. Documenting/Recording Information -- Entering, transcribing, recording, storing, or maintaining information in written or electronic/magnetic form.