# IEC 61508 #standard #safety #certification IEC 61508 is an international standard for functional safety of electrical, electronic, and programmable electronic safety-related systems. ## Purpose - Provides framework for safety lifecycle - Defines requirements for safety integrity levels (SIL) - Applies to all industries - Foundation for sector-specific standards ## Key Concepts - **Safety Integrity Level (SIL)**: Quantitative measure of safety performance - **Safety Lifecycle**: Systematic approach to safety management - **Risk Assessment**: Evaluation of hazards and risks - **Functional Safety**: Part of overall safety dependent on correct functioning ## SIL Levels - SIL 1: Low risk reduction - SIL 2: Moderate risk reduction - SIL 3: High risk reduction - SIL 4: Very high risk reduction ## Application to F&G Systems - F&G control systems should be SIL-certified - Ensures reliability and safety - Required for worker protection - Critical for asset protection in hazardous environments ## Relationship to Other Standards - IEC 61511: Process industry sector implementation - Foundation for F&G system certification - Ensures systematic safety approach