Functional safety testing

Functional safety testing

Assessing functionality in safety-critical applications

Embedded devices involved in safety-critical applications must be robust and reliable. Functional safety aspects of a device include response to inputs, possible hardware and software failures, environmental changes, operator errors, uptake of corrupt information, changes in electromagnetic environment, changes in characteristics, random failures of components throughout the product life cycle, and intentional tampering.

At DEKRA, we perform a risk assessment to define the required functional safety and safety integrity levels (SIL) for your devices. We then devise an assessment plan covering the entire product life cycle. This may include reviews of the hardware and software requirements, design process, verification testing, documentation and complete technical construction file.

The internationally accepted basic standard for addressing functional safety is IEC 61508. There are also other standards for specific products, such as IEC 62304 for medical devices, and for particular sectors, such as IEC 61511 for the process industry and ISO 26262 for road vehicles. We assess conduct functional safety in line with many recognized standards, including (but not limited to):

  • IEC 61508 – Functional safety of electrical/electronic/programmable electronic safety-related systems
  • IEC 62304 – Medical device software: software life cycle processes
  • ISO 13849 – Safety of machinery: safety-related parts of control systems
  • IEC 62061 – Safety of machinery: functional safety of safety-related electrical, electronic and programmable electronic control systems.
  • IEC 61800-5-2 – Adjustable speed electrical power drive systems – Part 5-2: safety requirements – functional
  • IEC 61511 – Functional safety: safety instrumented systems for the process industry sector
  • ISO 26262 – Road vehicles: functional safety
  • IEC 60730-1 – Automatic electrical controls for household and similar use
  • IEC 60079-29-3 – Explosive atmospheres – Part 29-3: gas detectors – guidance on functional safety of fixed gas detection systems
  • ISO/IEC 14762 – Information technology: functional safety requirements for home and building electronic systems (HBES)
  • IEC 61131-6 – Programmable controllers – Part 6: functional safety
  • IEC 61784-3 – Industrial communication networks – profiles – Part 3: functional safety fieldbuses


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