Safety Alert
Functional safety of control systems
Functional safety of control systems
- NOPSEMA
- Safety Alert
- Control of WorkMachinery and EquipmentProcess Safety
- Functional safetyMajor accident management
Read at NOPSEMAOpens the document on nopsema.gov.au
Summary
This alert describes design weaknesses encountered in safety-related control systems across diverse applications. It explains how incorrect control functions can create hazards and highlights potentially hidden risks from programmable devices. Operators should audit systems to identify safety-related functions and assure adequate design, construction and maintenance.
Classifications: Functional safety; safety instrumented systems; SIS.
Classifications: Major accident management; major accident prevention.
Summary
The alert addresses weaknesses in safety-related programmable control systems and their potential to create hazardous machinery or process conditions.
Themes: control of work, machinery and equipment, process safety.