Glossary · Batch and process operations
Recipe operation
German: Rezeptoperation
In ISA-88 batch control, a recipe operation is the part of a recipe procedure that corresponds to the operation level of the procedural model. It contains recipe phases and defines their order and parameters for an independent processing activity.
- Batch control
- Process industry
- Standards
In one sentence
In ISA-88, a recipe operation is the recipe level that corresponds to an operation and holds the ordered recipe phases for one processing activity.
Example
The recipe operation "react" in the master recipe sets a reaction temperature of 80 °C and a hold time of 90 minutes for its phases.
How it applies
- Recipe management: Process engineers define recipe operations in master recipes; when a batch is scheduled, a control recipe is created with the actual values.
- Engineering: At run time, the recipe operation is linked to the equipment's operation or directly to its phases, depending on how the batch system splits recipe and equipment control.
- Operation: Operators see recipe operations as the main steps of a batch on the batch HMI.
- Documentation: Recipe documentation and SOPs should use the same operation names as the recipe editor. When recipes change, the change record should state which recipe operations are affected.
Recipe operation vs. operation
The recipe operation belongs to the recipe (what to do and with which parameters). The Operation (ISA-88) in equipment control is the logic that carries it out on a specific unit.