Safety Instrumented Systems – TÜV FS Eng – 4 Day Course Outline

Day 1

Fundamentals of functional safety #1:

• Essentials of functional safety;
• Safety function: Functionality & safety integrity
• Hazard Analysis
• Risk Assessment
• Risk Target and Risk Reduction Models
• IEC 61508 family of standards and the role of IEC 61511
• Overall Safety Lifecycle, E/E/PE Safety Lifecycle & work Safety Life-cycle.

Fundamentals of functional safety #2:

• Strategy to achieve functional safety
• Failure modes & failure categories
• Safety Integrity & Safety Integrity Levels (SILs)
• Overall design framework
• Compliance model
• Failure Mode & Effects Analysis (FMEA) incorporating FMECA & FMEDA in the context of IEC 61508

Fundamentals of functional safety #3:

• Modes of Operation (Low Demand/High Demand/continuous)
• SIL Determination ((Low Demand/High Demand/continuous)
• Example of overall approach
• Allocation of safety functions

Design essentials to achieve a specified SIL (IEC 61508)

• Hardware Safety Integrity
• Systematic Safety Integrity & Systematic Capability
• Routes to compliance IEC 61508 (including Proven in Use)
• Hardware Fault Tolerance (HFT) & Architectural Constraints
• Framework for the Design RequirementsReliability modelling (achievement of Target Failure Measure (e.g. PFDavg)

Day 2

Simplified example: SIL Achievement

• Achievement of Safety Integrity comprising
• Achievement of the Target Failure Measure (e.g. PFDavg) for dangerous Random Hardware failures
• Systematic Safety Integrity
• Hardware Safety Integrity (Architectural Constraints) including Hardware Fault Tolerance (HFT) and Safe Failure Fraction (SFF)

Assurance Measures

• Functional Safety Audit
• Functional Safety Assessment
• Verification & Validation
• Accreditation and Certification
• Traceability

Workshop #1

Questions on topics covered so for (including multiple choice and multiple response)

Design essentials to achieve a specified SIL (IEC 61511)

• Relationship between IEC 61508 and IEC 61511
• SIF functionality and 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
• Prior Use Concepts
• Legacy Systems

Workshop #2

Questions on topics covered so for (including multiple choice and multiple response)

Day 3

Management of Functional Safety & Functional Safety Assessment (IEC 61511)

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

SIL determination (including Target Risk & Tolerable Risk concepts)

• 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)

Questions on topics covered so for (including multiple choice and multiple response)

Operation & Maintenance

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

Workshop #4

Questions on topics covered so for (including multiple choice and multiple response)

Open Forum

Discussion & questions on any issues covered on the course

Day 4

Exam (4.5 hours) Day four consists of a four-hour Two-Part examination where:

* Part 1 of the examination comprises a number of Multiple-Choice questions (where only one answer is correct) and Multiple-Response questions (where, at most only two correct answers are possible). – The scoring for the Multiple Choice is one mark for a correct answer and no marks for an incorrect answer. – The scoring for the Multiple-Response questions is one mark for a correct answer and two marks are available for the two possible correct answers.

* Part 2 = 10 multiple-part questions. Three marks per question are available for a correct answer.