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Functional Safety and Standards

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  • 1. Functional Safety and Standards Mike Miller & Derek JonesCopyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 2. What is functional safety?What is it? It’s about ……………It’s NOT just about Equations,Standards and schematics… ISO 13849-1 IEC 62061 Performance Productivity Time to market Sustainability Information Compliance Development Costs Ops & Maintenance Costs Copyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 3. Functional Safety – Overview of requirements for design1. Probability of dangerous failure / Mean time to dangerous failure2. Fault tolerance / Category3. Safe failure fraction / Diagnostic coverage4. Common cause failure5. Systematic integrity6. Functional safety management Copyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 4. Safety Management – Roles and Responsibilities Copyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 5. Safety Management – Roles and Responsibilities Copyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 6. Safety Management – Roles and Responsibilities Copyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 7. Safety Management – Roles and Responsibilities Copyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 8. Safety Management – Roles and Responsibilities Copyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 9. Safety Management – Roles and Responsibilities Copyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 10. Safety Management – Roles and Responsibilities Copyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 11. Safety Management – Roles and Responsibilities Copyright © 2011 Rockwell Automation, Inc. All rights reserved.
  • 12. Background for Functional Safety Management Modification after setting into operation 20 % Specification 44 % Operation & maintenance 15 % Installation & setting Design & Implementation into operation 6 % 15 %Source: „Out Of Control“, UK HSE (September 2004) New Standards for Safety of Machinery
  • 13. Traditional Perspective of Safety: Safety and Productivity are Mutually Exclusive Objectives • Reduced Machine Utilization • Reduced Operational EfficiencySAFETY • Increased Labor Costs • Increased Mean Time To Repair • Increased Nuisance Shutdowns• Reduced Healthcare costs• Reduced Litigation costs PRODUCTIVITY Belief is safety = increased cost and impact
  • 14. Copyright © 2009 Rockwell Automation, Inc. All rights reserved. 14
  • 15. Copyright © 2009 Rockwell Automation, Inc. All rights reserved. 15
  • 16. Copyright © 2009 Rockwell Automation, Inc. All rights reserved. 16
  • 17. Copyright © 2009 Rockwell Automation, Inc. All rights reserved. 17
  • 18. Copyright © 2009 Rockwell Automation, Inc. All rights reserved. 18
  • 19. The Changing world of standards
  • 20. ANSI Series of North American standards• ANSI B11.0 - Safety of Machinery - General Requirements and Risk Assessment (combined machine safety and risk assessment methodology into one document and harmonization)• ANSI B11.19 - Performance Criteria for Safeguarding (revised to include advances in technology and harmonization with international standards)• ANSI/PMM1 B155.1 - Safety Requirements for Packaging Machinery and Packaging-Related Converting Machinery (revised to include technology advances and harmonization)• ANSI/RIA 15.06 - for Industrial Robots and Robot Systems - Safety Requirements (revised to include technology advances and harmonization with ISO 10218)• ANSI/NFPA 79 - Electrical Standard for Industrial Machinery (revised to included changes in technology))
  • 21. Changes in IEC/ISO/EN Standards• IEC/EN 62061 – Functional safety of electrical control systems for machinery (forging links to IEC 60947 series and other product standard)• EN ISO 13849 Safety related parts of machinery control systems (EN 954 being withdrawn - EN ISO 13849-2 Validation to be published)• Merging of IEC62061/ISO 13849 Machinery safety control systems (Clarifies existing requirements and gives more options)• EN ISO 14119 (EN 1088) Guard interlock devices (Functional safety classification, Technology update, access control, series connection changes)• MT/IEC 60204 - Safety of machinery - Electrical equipment of machines - Part 1: General requirements
  • 22. Thank You.Copyright © 2011 Rockwell Automation, Inc. All rights reserved.

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