Which type of process is used by oil refineries to produce petroleum products using a 24-hour schedule?

Flow shop processes involve a sequence of operations where products move through fixed paths, typically suited for batch production. While they can operate on a schedule, they do not inherently support the continuous nature required for oil refining, which requires uninterrupted operation to maintain efficiency and product quality.

Project processes are characterized by unique, one-time operations, often with a defined start and end. Oil refining does not fit this model since it involves ongoing production rather than discrete projects. The nature of oil refining necessitates a process that can run indefinitely, making project processes unsuitable.

Job shop processes involve custom orders that require varied production methods and setup times. This model is less efficient for oil refineries, which need to produce large volumes of standardized products continuously. The flexibility of job shops contrasts with the demanding and stable production requirements of refining operations.