Standards and Trends in Machine Safety -A changing World - Jesper U. Brydesen LBL safety & sensing Scandinavia Key Safety Trends Globalization of Safety Control Standards Emergence and adoption of safety standards and enforcement Customers can deploy global safety strategies for manufacturing applications Transition from Electro-mechanical to Electronic Safety Controls Emergence of Safety Networks Tighter Integration of Standard Control and Safety Control Existing standards are being update to allow electronics and Programable devices. Increased focus on Safety Design to Improve Productivity Make machinery safer and easier to operate and maintain by eliminating non-value added tasks Reduce motivation to bypass safety by making it transparent t to operators Modern Safety Practices are Enabling a Fundamental Change in How Safety is Viewed in Manufacturing
Why Safety Control? Safety Control Systems Can Increase Productivity & Profits Provide operators with equipment that allows them to work productively while minimizing their risk of injury Benefit: Improve machine productivity and reduce the likelihood of injury Provide engineers and maintenance personnel with contemporary safety control systems that enable design flexibility and increased diagnostics Benefit: Faster machine design, commissioning and maintenance with increased likelihood that Standard Operating Procedures will implemented! Fig. 1 Zone Control Analogy: Bicycle Helmet Safety Past Present Performance Uncomfortable Heavy Comfortable (Pads) Light (Foam or Comfortable Light Hot Composite) Cool Cool (Ventilation) Performance Enhancing! Bicycle Helmet Safety has evolved from a pure focus on safety to an integral tool for improving athletic performance
Machine Safety Solutions Past Present Productivity Cumbersome Difficult to apply Easy to apply Sft Safety Rated Rtd Flexible Task Oriented Difficult to use Products Productivity Often Bypassed Local Diagnostics Enhancing! Machine Safety is also evolving... from a pure safety approach to a valuable productivity enabler Machine Safety Solutions Past Present Productivity Most Manufacturers Are Here Real Productivity Gains Available Here Cumbersome Difficult to apply Difficult to use Often Bypassed Functional Easy to apply Flexible Task Oriented Productivity Enhancing! Machine Safety is also evolving... from a pure safety approach to a valuable productivity enabler
Standards and Trends in Machine Safety Machine Directive (2006/42/EC) Updated in 2006 Valid after 2009-12-29 Until then, current MD (98/37/EC) apply CE Mark Legal conformity Trade passport Standards Harmonised Listed in the OJ Standards and Trends in Machine Safety OSHA ANSI TR 3 ANSI TR 4 ISA SP 84 UL 1998 ANSI B11 ISO 13849 IEC 61508 IEC 62061 IEC 60204 EN 1050 EN 954 EN 292 EN 999 EN 692 BG Converging standards are changing the rules
Evolution of EN ISO 13849-1 EN 954-1 [General Principles] i also published as ISO 13849-1 : 1999 based on a risk assessment Will remain valid until: Got 2 years more so now for use until 2011 Part 2 of EN 954-1 [Validation] is published as EN ISO 13849-2 : 2003 EN 954-1 has been revised to include aspects of functional safety. It has changed number to EN ISO 13849-1 (2006) Got 2 years more so now for use until 2011. Standards and Trends in Machine Safety EN ISO 13849-1 Risk Graph Performance Level, PLr Contribution to Risk Reduction F1 S1 F2 F1 S2 F2 S = Severity F = Frequency or Duration of Exposure a b c d e Low High P = Avoidance Probability
Performance level estimation Structure: Cat. 3 Reliability (MTTF D ): High Diagnostics (DC): Low Standards and Trends in Machine Safety IEC EN 62061 (listed) SIL1, 2, 3 Derived from the mother standard IEC 61508 Functional Safety IEC 61508 Machine Safety IEC 62061 Process Safety IEC 61511 Transport Safety IEC 50126