Recent content by dbp8518

Yes it was original fail-safe design which is being modified due to single point vulneribity concerns.

I am modifying the solenoid valve circuit from "deenrgize to actuate" to "energize to actuate" logic of a feed water regulatin valve at a nuclear station. I need to add some sort of low current device to monitor the circuit continuity to assure that the solenoid will operate when logic demands...