ESD Forced/ ESD MOS 2

[ahussain19]

Good day

I am working in a refinery as a process engineer, I have encountered the terms above but I couldn't understand them well.
what do those terms mean?

thank you

 

[LittleInch]

ESD forced might be that the system can force the reset or opening of an ESD valve.

Sometimes happens when you need say <5bar across the valve to open but even with a bypass fully open you can't get the differential low enough, then you would / could force the ESD valve to open.

The last one I found via google in about 15 seconds -

http://www.infineon.com/dgdl/an-986.pdf?fileId=5546d462533600a40153559f9f3a1243

seems to refer to an ESD test of a circuit.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[georgeverghese]

ESD MOS = ESD Maintenance Override Switch.

 

[mjohnqa]

ESD MOS is a built-in switch provided in the DCS to enable maintenance of trip transmitters/system so as to avoid inadvertent trip of the plant/unit. Normally the overridden trips gets back to normal after a period of time say 8 hours.

Regards,

John