Definition:
A Basic Process Control System (BPCS) is the standard control system responsible for day-to-day operation of a process, separate from safety-specific systems. Its main use is to discuss its uniqueness from the SIS, and to emphasize that they are separate systems (with minimal cross-connections for communications).
This term is defined and used within functional safety, but is not much used outside this space. Other similar terms are industrial automated control system (IACS), process control system (PCS), or process automation system (PAS).
Key Points:
- BPCS typically manages normal startup, shutdown, and operating functions.
- BPCS can sometimes be credited as a risk reduction measure if it meets performance and independence criteria.
Example:
A temperature control loop regulating reactor temperature through a DCS is part of the BPCS.
See Also: SIS
Cited Source:
- IEC 61511-1:2016, Clause 3.2.3
- Icarus-ORM Academy – BPCS vs SIS