Glossary · Batch and process operations
Recipe procedure
Also known as: Procedure (recipe)
German: Rezeptprozedur
In ISA-88 batch control, a recipe procedure is the part of a recipe that defines the strategy for producing a batch. It is the highest level of the recipe's procedural hierarchy and consists of recipe unit procedures, recipe operations and recipe phases.
- Batch control
- Process industry
- Standards
In one sentence
In ISA-88, the recipe procedure defines the strategy for producing a batch and contains recipe unit procedures, operations and phases.
Example
The master recipe for a paint shade has a recipe procedure with two recipe unit procedures: dispersion in the mill and let-down in the mixing tank.
How it applies
- Recipe management: ISA-88 distinguishes general, site, master and control recipes; the procedure is one of the recipe's components, alongside header, formula, equipment requirements and other information.
- Engineering: The recipe procedure runs within a process cell and is broken down into unit procedures that are assigned to units.
- Integration: In ISA-95 terms, the recipe corresponds to product definition information exchanged between business systems, MES and batch control; see Production definition.
- Documentation: Recipe documentation and change records should identify the recipe type and version. The documentation team can align SOPs with the recipe procedure's structure, so that manual steps sit next to the automated ones.
Recipe procedure vs. procedure in equipment control
The recipe procedure defines the process strategy independently of how equipment is programmed. Equipment procedural control contains the logic that performs it. The separation lets recipes change without changing controller code.