Catch Fence Design for Big Centrifuge

[JimFife]

I'm making a centrifuge, bolted to a concrete floor in a large room, that can swing a 200-lb load on a 6-ft arm at 90RPM (16g). I need to catch the load if it flies off. I think I want a 20'Dia ring of heavy-gage chain-link fence wrapped around 12 or more poles, each with a concrete base, but which are free-standing on the floor. A crash might "weeble" all the poles but this spreads the impact through the whole system. I'm afraid a stronger, rigid system (embedded poles, framed fence sections, etc), might fail locally, and let the load go through it. How do I ensure a safe catch fence, and then how do I prove it to OSHA? I haven't found any thing on the web.

 

[racookpe1978]

You may be missing a second-order threat - Not from the part itself being thrown off (though 16g force on a 200 lb moving object is considerable), but from the far side of the "moving" fence getting pulled or distorted into the (still-moving) centrifuge after the load comes off.

Polar coordinates, looking down at the axle of the centrifuge. That is, assume the load is thrown off at 0 degrees and hits the fence. The fence (at 0 deg) is forced away from the axle as it "catches" the load. That movement away from the center pulls the fence in towards the centrifuge arm (still moving for at least a few rev's) at the 090 and 270 degree points, and (depending on the friction with the floor of the concrete posts) the part at 180 will get moved towards the arm as well.