IEC 62061 introduction

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Very very brief introduction to IEC 62061

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IEC 62061 introduction

  1. 1. Copyright exida Asia Pacific © 2013 Singapore +65 6222 5160 Shanghai +86 21 5171 7250 Hong Kong +852 2633 7727 Germany +49 89 4900 0547 USA +1 215 453 1720 Switzerland +41 22 364 14 34 Canada +1 403 475 1943 United Kingdom +44 2476 456 195 Netherlands +31 318 414 505 Australia / NZL +64 3 472 7707 Mexico +52 55 5611 9858 South Africa +27 31 267 1564 Exida Contacts IEC 62061 Introduction Singapore 2009 Koen Leekens
  2. 2. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Safety is Only as Strong as its Weakest Link exida
  3. 3. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Topics in this Presentation exida Safety Regulatory Environment – Situating the IEC 62061 The IEC 62061 Safety Lifecycle Procedures in 8 steps Summary
  4. 4. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Who we are Founded in 1999 by experts from Manufacturers, End Users, Engineering Companies and TÜV Product Services Today: LARGEST Functional Safety and Cyber Security consultancy and certification body worldwide “Provide independent Services, Training and Tools to help Customers comply to any Industry Standards for Functional Safety, Cyber Security and Alarm Management” Rainer Faller Former Head of TÜV Product Services Chairman German IEC 61508 Global Intervener ISO 26262 / IEC 61508 Author of several Safety Books Author of IEC 61508 parts Dr. William Goble Former Director Moore Industries Developed FMEDA Technique (PhD) Author of several Safety Books Author of several Reliability Books
  5. 5. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Where we are
  6. 6. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 What we do EXIDA SCOPE Functional Safety Cyber Security Alarm Management SERVICES Tools Training Consultancy Certification Reference Materials INDUSTRIES Process Industry Automotive Machine Industry Power Industry Rail End Users Equipment Manufacturer Engineering Companies System Integrators CUSTOMERS Reliability
  7. 7. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 The exida Library exida publishes analysis techniques for functional safety exida authors ISA best- sellers for automation safety and reliability exida authors industry data handbook on equipment failure data www.exida.com
  8. 8. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 exida Customers (extract from 2000+)
  9. 9. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Topics in this Presentation exida Safety Regulatory Environment – Situating the IEC 62061 The IEC 62061 Safety Lifecycle Procedures in 8 steps Summary
  10. 10. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 What is Machinery Safety? It is protecting operators of machines and personnel in the area from being injured by the machine Application of a machine’s energy in an unintended fashion can cause injury, property damage and business interruption IEC 62061 : “Assembly of linked parts or components, at least one of which moves, with the appropriate machine actuators, control and power circuits, joined together for a specific application, in particular for the processing, treatment, moving or packaging of a material” It is NOT guarding the machine from damage!
  11. 11. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 SRCF: Safety-Related Control Function Specific single set of actions and the corresponding equipment needed to identify a single hazard and act to maintain or bring the system to a safe state Permissive Protective Mitigating
  12. 12. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 SRECS: Safety-Related Electrical Control System Covers the whole loop Can encompass multiple functions and act in multiple ways to prevent multiple harmful outcomes Can hold different safety-related control functions (SRCF)
  13. 13. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Safety Regulatory Environment 13 1980 1985 1990 1995 2000 2005 2010 DIN 31000 DIN V 19250 DIN V VDE 0801 EN 954-1 IEC 61508 IEC 61511 IEC 61513 ANSI/ISA S84.01 1996
  14. 14. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Safety Regulatory Environment 14 1980 1985 1990 1995 2000 2005 2010 DIN 31000 DIN V 19250 DIN V VDE 0801 EN 954-1 IEC 61508 IEC 61511 ISO 13849-1 IEC 61513 ANSI/ISA S84.01 1996 IEC 62061 Superseded by 2 standards that co-exist
  15. 15. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Relationship with Other Standards ISO 13849-1 Low Complexity SRPCS IEC 62061 SRECS IEC 60204 Electrical Equipment ISO 14121 Principles for Risk Assessment ISO 12100 Machinery Safety – Basic Concepts Source ZVEI Flyer “ Safety of Machinery Certification and CE IEC 61508 Complex Sub-Systems EN 954-1 Prescriptive + Performance Performance Prescriptive
  16. 16. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Prescriptive Standards
  17. 17. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 The IEC 62061 is Performance based
  18. 18. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Recommended: IEC 62061 - EN ISO 13849 Technology implementing SRCF ISO 13849-1 IEC 62061 A Non-electrical X - B Electromechanical Restricted X C Complex electronics Restricted X D Non-electrical and Electromechanical Restricted X E Complex electronics and Electromechanical Restricted X F C combined with A, or C combined with A and B X X Source: IEC 62061 - Table 1 - Simplified
  19. 19. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Device Manufacturers - Sector Specific Not Available Which Standard? IEC 61513 Nuclear IEC 61511 Process Industry IEC 61508 Functional Safety for E/E/PES Safety Related Systems ISO 26262 Road Vehicles End Users - Systems Integrators IEC 62061 Machinery
  20. 20. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 European Machine Safety EN294 Safety Distances EN1050/ ISO14121 Risk Assessment ISO13849 Safety Related Part Control Systems EN292 General Principles EN60204-1 Electrical Equipment EN 61496 Light Curtains IEC 62061 Functional Safety of SRECS EN 1037 Unexpected Start-up EN 1088 Interlocking Devices EN 60947-5-3 Proximity Devices with Fault Protection EN 60947-5-1 Mechanical Switches EN 1760 Safety Mats EN999 The Positioning of Protective Equipment EN 574 Two-Hand Control EN 953 Guards EN 418 Emergency Stop EN 692 Mechanical Presses EN 1762 Food Processing MachinesEN 415 Packaging Machines EN 693 Hydraulic PressesEN 972 Tannery Machines EN 746 Thermo-processing Machines EN 931 Footwear Manufacturing Machines EN 1114-1 Rubber and Plastics Machines EN 1525 Driverless trucks
  21. 21. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 What do accidents teach us? Buncefield 2005 Bhopal 1984 Flixborough1974 Seveso 1976
  22. 22. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 US Fatal Work Injuries
  23. 23. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Primary Cause of SIS Failures? What is going wrong? Are the existing standards Failing? What are the primary causes?
  24. 24. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Primary Cause of Failures? Specification Changes after Commission Operation and Maintenance Design and Implementation Installation and Commission Source Health, Safety & Environmental Agency
  25. 25. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Example Specification Operator Traps Hand
  26. 26. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Example Operate and Maintain Operator loses Hand
  27. 27. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Primary Cause of Failures? Specification Changes after Commission Operation and Maintenance Design and Implementation Installation and Commission Source Health, Safety & Environmental Agency The majority of accidents are: … Preventable if a systematic Risk-Based Approach is adopted…
  28. 28. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Key Aspects of IEC 61508/61511 Safety Integrity Levels (SIL) – Reliable Hardware with predictable failure rates to protect against Random Failures (Physical) Safety Lifecycle – Safety Management with controlled and systematic processes to protect against Systematic Failures (Design)
  29. 29. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Topics in this Presentation exida Safety Regulatory Environment – Situating the IEC 62061 The IEC 62061 Safety Lifecycle Procedures in 8 steps Summary
  30. 30. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 The IEC 62061 General Structure in 8 Steps Management of Functional Safety Information on machine and its use Risk Assessment Determine SRCF’s Write SRECS SRS SRECS design & implementation SRECS integration, testing & installation Produce information on SRECS use and maintenance SRECS Validation 1 3 2 4 5 6 7 8 Analyze Realize Operate Maintain Validate Manage
  31. 31. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 The IEC 62061 General Structure in 8 Steps Management of Functional Safety Information on machine and its use Risk Assessment Determine SRCF’s Write SRECS SRS SRECS design & implementation SRECS integration, testing & installation Produce information on SRECS use and maintenance SRECS Validation Manage
  32. 32. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Management of Functional Safety Functional Safety Planning (FSM Plan) Personnel Competency and Roles Documentation, Configuration Control Documented Processes Safety Verification and Validation plan Tracking and Auditing
  33. 33. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Competency IEC 61508 Personnel Competency “…ensuring that applicable parties involved in any of the overall E/E/PE or software safety lifecycle activities are competent to carry out activities for which they are accountable.” (IEC 61508, Part 1, Paragraph 6.2.1 (h)) IEC 62061 Personnel Competency “Identify persons, departments … that are responsible for carrying out the lifecycle activities…establish a verification plan to include the details of persons, departments and units who shall carry out…” (IEC 62061, Paragraph 4.2.1) www.cfse.org
  34. 34. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 The IEC 62061 General Structure in 8 Steps Management of Functional Safety Information on machine and its use Risk Assessment Determine SRCF’s Write SRECS SRS SRECS design & implementation SRECS integration, testing & installation Produce information on SRECS use and maintenance SRECS Validation 1 3 2 4 Analyze
  35. 35. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Step 1: Machine Use Considerations Machinery phase of life – New machinery with history of similar types – Novel design or modification to existing machinery Machinery limits – Intended use(s) – Reasonably foreseeable misuse Operator type – Public – Trainees – Trained Operators – In each case, identify and document training records Exposure to others not operating the machinery 1
  36. 36. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Step 2 - Iterative hazard and risk assessment The IEC 62061, IEC 61508 and IEC 61511 are Risk Based Standards 2
  37. 37. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Tolerable Risk? Rigorous and flexible Consider all relevant forms of harm Consistent with company and society practice MoralLegal Financial Make plant as safe as possible, disregard costs Comply with regulations as written, regardless of cost or actual level of risk Build the lowest cost plant, keep operating budget as small as possible 2
  38. 38. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Examples (Source HSE UK) 0 0.005 0.01 0.015 0.02 Fatalities per Person per Year Air Train Bus Motorcycle Chemical Industry Smoking 2
  39. 39. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Singapore Workplace Fatality Rate 39 Source WSHCouncil – National Statistics 2
  40. 40. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Identify and Analyze All Possible Hazards Use a systematic method which proactively identifies hazards Use a “team” approach where possible Be consistent with the method used (procedure) Inductive methods – Checklists – What-if? – Failure Mode and Effect Analysis – Fault simulation (control systems) Deductive methods – Fault Tree Analysis 2
  41. 41. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Typical hazards, hazardous situations & events Mechanical – Crushing, shearing, cutting/severing, entanglement, drawing-in, impact, stabbing or puncture, friction or abrasion Electrical – Contact with live parts (direct/indirect), electrostatic Thermal – Burns, scalds Noise – High/Low frequency acoustic noise leading to hearing loss Vibration – Hand-held machines leading to neurological and vascular disorders, whole body vibration (posture) Radiation – Low-frequency, radio frequency, microwaves, infra-red, UV, X and gamma rays, lasers etc. Air Systems / Fluids / Water - Fire Control - Natural Gas…
  42. 42. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Estimate risk for each hazard Risk is a measure of: – Severity (Se)  Reversible injury  Non-reversible injury  Death – Probability of Occurrence  Frequency and Duration of exposure (Fr)  Probability of Occurrence (Pr)  Probability of Avoiding or limiting (Av) 2 Consequence Likelihood
  43. 43. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Estimate risk for each hazard 43 Consequence Likelihood 2
  44. 44. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Estimate risk for each hazard Hazard MatrixRisk Graph Source: Screenprint exSILentia www.exsilentia.com 2
  45. 45. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Safeguard selection considerations 2
  46. 46. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Likelihood example: LOPA 2
  47. 47. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Process Design Changes Other Safeguards Estimated Risk (Inherent Risk) Tolerable Level of Risk Risk SRCF: Safety Related Control function Step 3: Identify Safety Related Control Functions (defined by Customer per application) 3
  48. 48. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 3 Step 3: Identify Safety Related Control Functions Identify functional requirements – E.g. Operating modes, response times, operating environment, fault reaction function etc. Identify safety integrity requirements – E.g. If the guard door is open, it shall not be possible to start the machine – Safety integrity requirement
  49. 49. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 And Assign SIL User must specifically accept the residual risk Qualitative SIL risk ranking matrix – Use “worst case” assumptions – Calculate “Class” = Fr + PR + AV – Decide on Severity – Look up SIL on intersecting column and row 3-4 5-7 8-10 11-13 14-15 Single Death, Losing a complete limb or eye 4 SIL2 SIL2 SIL2 SIL3 SIL3 <=1 hour 5 Very High 5 Permanent, losing finger(s) 3 OM SIL1 SIL2 SIL3 >1 hour to <= 1day 5 Likely 4 Reversible, medical attention 2 OM SIL1 SIL2 >1day to <= 2 weeks 4 Possible 3 Impossible 5 Reversible, first aid 1 OM SIL1 >2 weeks to <= 1 year 3 Rarely 2 Possible 3 >1 year 2 Negligible 1 Likely 1 Consequences Class Cl Severity Se Probability of Hazardous event Pr Avoidance Av RISK MATRIX Frequency Fr Duration >10min Note: OM = Other Measures necessary 3
  50. 50. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Assign SIL: Risk Matrix 3
  51. 51. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Assign SIL: Hazard Matrix 3
  52. 52. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Safety Integrity Level SIL 3 SIL 2 SIL 1 Probability of Dangerous failure per hour (PFHD) ≥10-8 to <10-7 ≥10-7 to <10-6 ≥ 10-6 to <10-5 IEC 62061 Safety Integrity Levels Note: SIL 4 is not included in EN IEC 62061 MTTFd 1,140 to 11,400 years 114 to 1,140 years 11 to 114 Years 3
  53. 53. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 EN ISO 13849 Performance Levels Links risk and control reliability requirements. PL Average probability of dangerous failure per hour (1/h) a ≥ 10-5 to < 10-4 b ≥ 3 x 10-6 to < 10-5 c ≥ 10-6 to < 3 x 10-6 d ≥ 10-7 to < 10-6 e ≥ 10-8 to < 10-7 3
  54. 54. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Specification = Communication How the Customer explained it How it was Sold How it was Designed How it was Built How it was Tested What the Customer really needed How it was Maintained How it was Billed How it was Installed How it was Documented 4
  55. 55. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 SRS Requirements The SRS contains two types of requirements Functional Requirements – Description of the functions of the SF – How it should work Safety Integrity Requirements – The risk reduction and reliability requirements – How well it should work 4
  56. 56. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 The IEC 62061 General Structure in 8 Steps Management of Functional Safety Information on machine and its use Risk Assessment Determine SRCF’s Write SRECS SRS SRECS design & implementation SRECS integration, testing & installation Produce information on SRECS use and maintenance SRECS Validation 5 6 Realize
  57. 57. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Step 5: SRECS Design & Development 2 Main Requirements to be fulfilled: 1. Hardware Safety Integrity (SILPFH) 2. Architectural Constraints (SILAC) 57 5
  58. 58. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Step 5: Hardware Safety Integrity SILPFH Logic Solver Sensor Final Control Element Sensor Sensor Final Control Element Safety Related Control System Subsystems Subsystems Elements PFHSERC = Σ PFHSub Where to find the Failure Rates? 5
  59. 59. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Safety Integrity Level SIL 3 SIL 2 SIL 1 Probability of Dangerous failure per hour (PFHD) ≥10-8 to <10-7 ≥10-7 to <10-6 ≥ 10-6 to <10-5 IEC 62061 Safety Integrity Levels Note: SIL 4 is not included in EN IEC 62061 MTTFd 1,140 to 11,400 years 114 to 1,140 years 11 to 114 Years 5
  60. 60. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Safe Failure Fraction Hardware Fault Tolerance 0 1 2 < 60% Not allowed SIL1 SIL2 60% ... < 90% SIL1 SIL2 SIL3 90% ... < 99% SIL2 SIL3 SIL3 >= 99% SIL3 SIL3 SIL3 Fault Tolerance N means N+1 faults could cause a loss of the safety function. IEC 62061 Architectural constraints Where to find SFF? 5
  61. 61. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 IEC 62061 Architectural constraints Safe Failure Fraction Hardware Fault Tolerance 0 1 2 < 60% Not allowed SIL1 SIL2 60% ... < 90% SIL1 SIL2 SIL3 90% ... < 99% SIL2 SIL3 SIL3 >= 99% SIL3 SIL3 SIL3 Fault Tolerance N means N+1 faults could cause a loss of the safety function. ...Defines The Required Architecture 5
  62. 62. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Trend toward 61508 certified products IEC 61508 Certification is a measure of design quality. IEC 61508 Certification provides fully justifiable equipment selection without safety integrity documentation created by the end user. More and more products are getting IEC 61508 Certification 0 5 10 15 20 25 30 1996 1997 1998 1999 2000 2001 200'2 2003 2004 2005 2006 2007 Number of IEC 61508 Certified Sensors From exida Process Measurement Instrument Market report 5
  63. 63. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Automatic SRCF Verification 5
  64. 64. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 6 Step 6: SRECS Integration & Testing Assemble sub-systems Test correct operation of each safety function by means of an integrated test Document the integration tests – Version of specification – Version of system/software – Acceptance criteria – Tools, equipment for calibration – Test results – Discrepancies – Changes made due to discrepancies Install SRECS in accordance with functional safety plan
  65. 65. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 The IEC 62061 General Structure in 8 Steps Management of Functional Safety Information on machine and its use Risk Assessment Determine SRCF’s Write SRECS SRS SRECS design & implementation SRECS integration, testing & installation Produce information on SRECS use and maintenance SRECS Validation 7 Operate Maintain
  66. 66. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 7 Step 7 : Operation and Maintenance Operator information – Safeguards implemented – Procedures for use Technical Information – Equipment description – Overview block diagrams – Circuit diagrams – Enable user to develop procedures Maintenance Information – Log for maintenance history – Routine actions and replacements – Repair procedures for diagnosed faults – Specification of required tools – Periodic proof testing requirements
  67. 67. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 SRECS Modification (IEC 62061) Develop a procedure for modifications to be dealt with, requiring: – Description of modification – Reason(s) for modification – Authorization – Development of a modification plan and chronological logbook for configuration management history purposes – Analysis of effects – Impact on functional safety – Re-visiting the appropriate design stage for hardware and/or software – Re-verification and validation activities required – Log of activities and personnel involved in the change – Revision of SRECS documentation, including revision levels of all documents affected 7
  68. 68. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 The IEC 62061 General Structure in 8 Steps Management of Functional Safety Information on machine and its use Risk Assessment Determine SRCF’s Write SRECS SRS SRECS design & implementation SRECS integration, testing & installation Produce information on SRECS use and maintenance SRECS Validation 8 Validate
  69. 69. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Verification & Validation Verification – Activity of demonstrating for each phase of the Safety Lifecycle, by analysis and/or tests, that, for the specific inputs, the deliverables meet the objectives and requirements set for the specific phase. Verification answers the question “Did I complete this activity correctly?” Validation – Activity of demonstrating, by tests, that the Safety-Related System, before or after installation, meets the Safety Requirements Specification. Validation answers the question “Did I build the complete system according to specification?” 8
  70. 70. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 The IEC 62061 General Structure in 8 Steps Management of Functional Safety Information on machine and its use Risk Assessment Determine SRCF’s Write SRECS SRS SRECS design & implementation SRECS integration, testing & installation Produce information on SRECS use and maintenance SRECS Validation 1 3 2 4 5 6 7 8 Analyze Realize Operate Maintain Validate Manage
  71. 71. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Topics in this Presentation exida Safety Regulatory Environment – Situating the IEC 62061 The IEC 62061 Safety Lifecycle Procedures in 8 steps Summary
  72. 72. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Summary – IEC 612061 Design and Implementation Requirements for SRECS Compliance = fulfilling relevant Safety Requirements Careful consideration when to use Performance Standard Risk Based Standard 8 Steps Safety Lifecycle Procedures
  73. 73. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Safety is Only as Strong as its Weakest Link exida
  74. 74. Copyright exida Asia Pacific © 2013 Koen Leekens +65 9772 9547 Thank You

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