Safety Instrumented Systems

Authors

  • Christoph Thust Infracor GmbH

DOI:

https://doi.org/10.17560/atp.v52i01-02.384

Keywords:

Safety instrumented system, Human factor, Management system

Abstract

Sources Due to Human Error

Since the entry into force of the IEC 61511 and the national implementation in the VDI/VDE 2180, requirements are strengthened to calculate the probability of failure on demand of safety instrumented systems (SIS). It is shown that compared to technical reliability of apparatures the influence of human behavior on the safety-related reliability of SIS should not be underestimated. To ensure plant safety by means of process control systems SIL-calculations as well as the improvement of organizational processes by means of functional safety management systems should be addressed.

References

IEC 61511: Functional safety - Safety instrumented systems for the process industry sector. IEC 2005

VDI/VDE 2180: Sicherung von Anlagen der Verfahrenstechnik mit Mitteln der Prozessleittechnik (PLT). VDI/VDE 2007

NE 93: Nachweis der sicherheitstechnischen Zuverlässigkeit von PLT Schutzeinrichtungen. Namur 2003

NE 130: Betriebsbewährte Geräte für PLT-Schutzeinrichtungen und vereinfachte SIL-Berechnung. Namur 2009

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Published

2010-01-01