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performance level (SIL) (PL)

The term Performance Level was coined by ISO and stands for the average probability of a failure of safety-relevant systems.

The performance level of robots is described by the classes d and e. Class d means that the probability of failure is between `10^-7` and `10^-6`. This means that class-d robots fail every `10^6 and `10^7` hours. For class-e robots, the values are one power of ten higher, i.e. between `10^7` and `10^8` hours.

These are the minimum performance levels specified in ISO 10218-2.

Englisch: performance level (SIL) - PL
Updated at: 21.01.2022
#Words: 80
Links: international organization for standardization (ISO), performance, level, class, power (P)
Translations: DE

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