😂😂😂"Rube Goldberg setups." These setups are characterized by an overly elaborate series of contraptions designed to perform a simple task in a convoluted way, inspired by the American cartoonist Rube Goldberg, who was famous for his illustrations of such machines.
This was done by contractor for one of the largest oil and gas producers in the world…. Redid the hydraulic system for slide valve actuation on Howden screw compressor…Each of those rotating valves they installed to utilize the pneumatic solenoids on side, they actually don’t do anything and cost thousands of dollars each… what they removed was 1 solenoid and sub plate that may cost $500 at most, on top of that they are using 24VDC to actuate pneumatic valves that then actuate the oil valves. Simple solution is to just use 24VDC solenoid D03 hydraulic valve and eliminate the pneumatics. When you consider these contractors have to be apart of Veriforce or ISNETWORLD and you see they may qualify under “safety” guidelines set forth to be a qualified contractor it makes you wonder how do you define safety? When you outsource safety to these 3rd parties and never consider the exposure that happens by not training people on technical knowledge of the equipment you aren’t safe at all, you are just checking a corporate plausible deniability checkbox for safety. If you understand the “how things work” the common sense of how to work on things safely comes naturally. Instead we see technicians who over complicate troubleshooting and do hard things first exposing themselves to more risky maintenance activities instead of doing the practical less risky things first.
Example “ slide valve solenoid doesn’t seem to be working, guys blow down refrigeration skid to change out solenoid, blows down unit too quickly causing Auto-refrigeration and now machine full of 200 gallons of liquid refrigerant, if they solve that problem then they may realize the hydraulic pockets for slide valve can still be pressurized despite skid pressure being 0, more exposure, then once they replace solenoid and put unit back on realize it was only a relay output or fuse or simply the coil that could have been replaced eliminating all of that exposure. I see this kinda stuff everyday and yet they will balk on a $10K training class that would save them millions and increase safety.
ALT Standard Hydraulic setup simplified