I have a few little insights on this!
I know recently a enthusiast page posted about some equipment being on Behemoth at Canada's Wonderland, and that equiptment was most likely the NDT they do for the trackwork (NDT standing for Non-destructive testing)
If you have ever ridden Dominator, you may notice that in the transfer they have a maintenance ball covered up. I do believe CF possibly has a few of these that ship around from park to park to test all the B&M's every few years. Keep in mind that the track and rails are solid structures that even though they take a lot of stress, do not break as easily. That's why CF does a complete winter maintenance of all of it's rides where everything comes off, stripped down to the very last bolt and is tested before being put back together and back on the track for another year of fun!