SIL control valves 1

[trentar]

Hello to all!

Let say that we have all available parameters for SIL of valve (Lambda valve, PFD valve), actuator(Lambda actuator, PFD actuator), solenoid valve (lambda sov, pfd sov)and booster (lambda b, pfd b). Can you tell me how do you estimate SIL parameters from individual parameters for system:
valve with actuator
valve with actuator and solenoid valve
valve with actuator, solenoid valve and booster?

Do you have some equations?

Thank you

T.

 

[gerhardl]

For instance EN standards:

https://www.pilz.com/de-DE/trainings/articles/188053

https://www.pilz.com/de-DE/support/knowhow/law-standards-norms/functional-safety/en-iec-62061