- Jun 11, 2007
- Machinery & Equipment Appraiser
The sign thing in a nuke plant likely is a spin off from the US Navy. A man of war has signs on everything. But the thing with it is that every sign has a life of death meaning. All water tight doors have a sign that designates when they are supposed to be closed or open and what is behind it. Every frame on a ship is labeled by its position in the vessel. Every piece of equipment is labeled by what it is and where it is at. All the valves in the piping are labeled by position and type of system. All the piping is painted a certain color to designate what is on the inside. If the pipes are covered in lagging, the description is printed on the lagging every so many feet and in each compartment that the piping runs through. It all has a meaning and a purpose and you absorb it quickly because your life may depend on it. You run drills on it all the time to make all of this automatic. That's probably why the US Navy has never had a nuclear accident that we know of.