Was watching a show last night about building the Atlas particle accelerator (part of the Hadron superconducting supercollider) in Switzerland, where they were assembling the electromagnets sections by lowering them something like 100 feet down a huge tube, with a *140 ton* overhead traveling crane (i.e. like in many manufacturing facilties..just waaaaay bigger). Magnet (don't remember weight...maybe 100 tons) was about 30 feet in the hole and the crane started making these ungodly loud banging noises, so they had to stop and pull it back out rather than risk going another 80 feet.
Load just hanging there not moving, noise was "bang" "bang"...etc with about 2 or 3 seconds between "bangs"
Anyhoo, problem was supposedly "bearings" in the crane and I'm thinking screw the supercollider, I wanna know what and why the bearings went out in this crane ! (which looked brand new and was probably only a few years old at most) Naturally they glossed over that whole aspect and just came back the next day with it "fixed" and lowered the magnet again.
So, any idea what exactly could happen to a nearly new crane bearings that size being utilized well below it's rated capacity (hellacious as that is) ?
Load just hanging there not moving, noise was "bang" "bang"...etc with about 2 or 3 seconds between "bangs"
Anyhoo, problem was supposedly "bearings" in the crane and I'm thinking screw the supercollider, I wanna know what and why the bearings went out in this crane ! (which looked brand new and was probably only a few years old at most) Naturally they glossed over that whole aspect and just came back the next day with it "fixed" and lowered the magnet again.
So, any idea what exactly could happen to a nearly new crane bearings that size being utilized well below it's rated capacity (hellacious as that is) ?