Introduction to Safety Instrumented Systems (IEC 61508/IEC 61511) – 3 Day Training Course Outline

• Essentials of functional safety
• Safety function: functionality & safety integrity
• Hazardous Analysis
• Risk Assessment
• Risk Target / Risk Reduction models
• IEC 61508 family of standards
• Technology/devices applications

• Strategy to achieve functional safety
• Failure modes & failure categories
• Safety integrity / Safety Integrity Levels
• Overall design strategy
• Compliance model

• Modes of operation:
• (Low Demand/High Demand/Continuous)
• Implications for SIL determination
• Example of overall approach
• Allocation of safety functions

• Framework for the Design requirements:
  • Hardware Safety Integrity
  • Systematic Safety Integrity
  • Systematic Capability
  • Routes to compliance
  • Architectural constraints

Note: “Proven in use” is covered in Routes to compliance

• Achievement of Safety Integrity comprising:
• Hardware safety integrity (Architectural Constraints)
• HFT/SFF
  Systematic safety integrity

• Functional Safety Audit
• Functional Safety Assessment
• Verification & validation
• Accreditation & Certification
• Certification models
• Traceability

• Questions on lectures given (multi-choice)
• Discussion

• Relationship between IEC 61508 & IEC 61511
• SIF Functionality & SIF Safety Integrity
• SIF Loop
• Safety lifecycle
• Design requirements to achieve a specified SIL; IEC 61508 & IEC 61511 design options
• BPCS control and protection functions
• BPCS as a Protection Layer
• Reliability modelling
• Prior Use concepts

• Relationship between IEC 61508 & IEC 61511
• SIF Functionality & SIF Safety Integrity
• SIF Loop
• Safety lifecycle
• Design requirements to achieve a specified SIL; IEC 61508 & IEC 61511 design options
• BPCS control and protection functions
• BPCS as a Protection Layer
• Reliability modelling
• Prior Use concepts

• Questions on lectures given (multi-choice)
• Discussion

• Organisation & resources
• Lifecycle Management
• Risk evaluation & risk management
• Planning
• Implementing & monitoring
• Assessment, auditing & revisions
• Competence (individual and Competence Management Systems)

• Legal Requirements (ALARP)
• Corporate Risk Criteria
• Cost Benefit Analysis
• Quantitative & qualitative approaches
• Risk Reduction concepts/Risk Parameters: (protection layers/conditional modifiers)
• LOPA, Risk Graphs, Fault Tree Analysis
• Sector approaches
• Contribution of the EUC control system (Low Demand Mode)

• Modifications
• Overrides
• Functional Safety Audits
• Functional Testing
• Proof Testing
• Proof Test Coverage
• Perfect and imperfect proof testing
• Proof Test Procedures
• Changes to Proof Test Procedure

• Questions on lectures given (multi-choice)
• Discussion

• Discussion/questions on any issues covered on the course