Abstract
In order to minimize the risks associated with the automation of industrial processes, it is necessary to unify standards of safety assessment. The aim of this article is the comparative analysis of safe-ty assessment methods of industrial automation systems. Authors presented two techniques of ensuring safety based on risk analysis, i.e. Performance Level (PL) and Safety Integrity Level (SIL) in relation to the applicable standards and regulations.
Highlights
The safety of industrial automation systems is becoming a subject of growing interest
Autorzy przedstawili dwa sposoby zapewnienia bezpieczeństwa, które wykorzystują analizę ryzyka tj.: badanie poziomu zapewnienia bezpieczeństwa PL oraz badanie poziomu nienaruszalności bezpieczeństwa SIL w odniesieniu do obowiązujących norm i przepisów
Summary
The hazard identification during which the identification of dangerous events that may occur during the operation of the technical system is carried out As part of this stage, an accurate description of potential events is prepared while their causes, effects and possible safeguards are identified. The level of security of industrial automation systems is determined by one of two possible parameters [1, 2, 17]: Performance Level - can be used in relation to electrical, mechanical, pneumatic and hydraulic solutions applied to improve safety. The required safety level PL, in accordance with EN ISO 134849-1, is calculated and defined as part of the risk assessment [4]. Faults will be detected in a timely manner to overcome the loss of the safety function. T10d – time until 10% of the components fail dangerously; Fig. 4 Category 4 (own study based on [4]) where: Interconnection
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