The functional safety lifecycle is a structured framework for managing safety from concept through design, operation, modification and decommissioning. It helps organisations identify hazards, define safety requirements and demonstrate that safety-related systems perform as intended.
This guide explains the main stages of the functional safety lifecycle and where each activity fits within a practical safety management approach. Click on each element to see more information.
We also provide guides to the Process Safety Lifecycle and OT Cyber Security Lifecycle.
Understanding the elements of the functional safety lifecycle
- Hazard & Risk Assessment
- Allocation of Safety Functions to Protection Layers
- Safety Requirements Specification
- SIS Design & Engineering
- Installation, Commissioning & Validation
- Operation & Maintenance
- Modification
- SIS / SIF Decommissioning
- Functional Safety Assessments (FSA1, 2, 3, 4, and 5)
- Planning throughout the Lifecycle (Functional Safety Management)
- Functional Safety Audit
