asks Include:

• observes and controls the operation of continuous or batch
  processing chemical plant using field controls and computer
  control systems
• determines and obtains materials and supplies
• controls the preparation, measuring and feeding of raw
  material and processing agents such as catalysts and filtering
  media into plant
• operates controls to regulate machinery, temperature,
  pressure and rate of flow
• takes samples and reviews quality and quantity of work
  undertaken
• patrols plant and inspects equipment to ensure proper
  operation and detect abnormalities
• issues permits for maintenance work and ensures work is
  performed in accordance with safety standards
• cleans and maintains equipment