Continuous processes involve the continuous mass transformations of energy and momentum on a flow of material. In a continuous process in normal operation, the goal is to obtain a product of uniform quality over time, regardless of how long the process has remained active. A process may last days or even weeks, and may even only be turned off for verification operations, cleaning, maintenance (either scheduled or unplanned due to failure). Continuous processes, which are also called industry or process controls, are as follows:

• Energy production
• Distribution of energy, water, and gas
• Crude oil and gas extraction
• Rolling plants
• Hydraulic systems for the collection and distribution of liquids or gases
• Ovens or driers
• Production of glass, cement, paper, expanded clay, and so on