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A generic approach is proposed in this work that automatically constructs suitable calculation models from a herefore invented formal description language. Two positive effects arise from that: firstly, all inherently and explicitly contained complexity of Safety Instrumented Systems is identified once and condensed into a set of transformation formulas generating the actual calculation models. Secondly, providing a flexible and extensive description language encourages smart and quick engineering processes, enables for non-standard solutions, and relieves safety engineers from the challenge of actually deriving explicit calculation models by hand. A suitable new type of discrete time multiphase markov model is chosen as mathematical basis, and comes along with the required solver algorithms for retrieving the desired unavailability characteristics: the probability of failure on demand (PFD), and the probability of fail-safe (PFS), i. e. an operational unavailability as economical indicator.
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Generic construction of availability calculation models for safety loops in process industry, Thomas Gabriel
- Sprache
- Erscheinungsdatum
- 2011
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- Titel
- Generic construction of availability calculation models for safety loops in process industry
- Sprache
- Englisch
- Autor*innen
- Thomas Gabriel
- Verlag
- Logos-Verl.
- Erscheinungsdatum
- 2011
- ISBN10
- 383252892X
- ISBN13
- 9783832528928
- Kategorie
- Skripten & Universitätslehrbücher
- Beschreibung
- A generic approach is proposed in this work that automatically constructs suitable calculation models from a herefore invented formal description language. Two positive effects arise from that: firstly, all inherently and explicitly contained complexity of Safety Instrumented Systems is identified once and condensed into a set of transformation formulas generating the actual calculation models. Secondly, providing a flexible and extensive description language encourages smart and quick engineering processes, enables for non-standard solutions, and relieves safety engineers from the challenge of actually deriving explicit calculation models by hand. A suitable new type of discrete time multiphase markov model is chosen as mathematical basis, and comes along with the required solver algorithms for retrieving the desired unavailability characteristics: the probability of failure on demand (PFD), and the probability of fail-safe (PFS), i. e. an operational unavailability as economical indicator.