Implementation of Safety Integrity Level (SIL) According to IEC/DIN EN 61508: Ensuring Functional Safety
Fundamentals
Modern control systems with safety tasks increasingly use complex microsystem technology that meets current technical standards. To ensure this technology meets safety-related requirements, specific standards for functional safety must be adhered to. In addition to ISO/DIN EN 13849 and IEC/DIN EN 62061, IEC/DIN EN 61508 is applied in the machinery sector due to its broad international acceptance.
Applying IEC 61508 poses a particular challenge as it considers not only components but also the safety function throughout the entire lifecycle of a machine or plant. This requires detailed documentation and quantification of safety-related reliability, often necessitating consultation for those developing safety-related electronic products and those using and operating them.
DMT ENCOS Standards
DMT ENCOS applies the following standards to ensure the functional safety of safety-related systems:
Steps for SIL Implementation
Requirements are divided into stages that measure system reliability based on hazard levels. These stages protect employee health, the environment, and property. Safety functions are realized through safety logic, consisting of various resources such as sensors, control elements, and actuators.
Operators of plants with safety-related functions determine the Safety Integrity Level (SIL) through a risk assessment. This assessment considers failure behavior, the presence of redundant structures, and whether the safety function should be continuously or on-demand monitored. Classification is based on the interconnection of various resources (sensors, actuators, control elements, etc.) rather than individual components.
Our Services
DMT ENCOS offers comprehensive services to support SIL implementation:
Benefits of SIL Implementation
Implementing the Safety Integrity Level (SIL) offers numerous benefits. It ensures compliance with legal regulations and international standards, increases the reliability and safety of your systems, and minimizes the risk of failures and accidents. By applying IEC 61508, you can ensure that your plants meet the highest safety requirements while maximizing efficiency and productivity.
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