Can process interlocks serve as a protective layer?
Thread Content
Hello everyone, I have a question: when it comes to layer protection analysis, the sensor alarm serves as one layer of protection; can the interlock mechanism involving the control valve connected in series with this sensor function as another layer of protection? Thank you!
The protective layer should have relative independence； The same parameter serves both as an alarm and as an interlock circuit. No!
The same sensor can only be counted as one protective layer.
The same sensor can only be counted as one protective layer.
The protective layer is a circuit, rather than referring to just a single component