Shop Crane E-Stop

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bcorbin

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I have a client who is asking me to remove the e-stop button on a travelling shop crane combo disco/controller. While I don't find any requirements for an e-stop in the NEC, I consider it good safety practice. However, the client is considering the hassle of someone seeing it, and then making him install them on all of the other shop cranes in the facility. He doesn't know if they're required or not either. I was wondering if anyone here knew of any code that might possibly require one.
 
Check ANSI B30 section for overhead crane requirements. Also, CMAA (Crane Manufacturers Association of America.)

The NEC, IMO, all you are required to have is lockable disconnect within sight of the crane.

The E-stop is a great idea in case an up contactor welds shut and the crane two-blocks, snaps the rope or chain and drops the load on the operator or riggers below.

You may be liable in this event if you are the one that removes the E-stop.

IMO, don't remove the E-stop.
 
bcorbin, I'm thinking if the e-stop came with the crane it might be wise to

leave it, I don't know if this is a new install or a used peice, and is it labled

by a 'testing lab' ?

Wouldn't you think he would want them on the other cranes instead of removing

this one? Well, I hope for the workers sake that the control box never has a

problem.
 
I would have to be removing the machine before I would remove the E-stop without some clear written directions to do so from someone I would consider qualified to make that choice.

the client is considering the hassle of someone seeing it, and then making him install them on all of the other shop cranes in the facility
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I would not consider the person making that statement to be qualified.
 
Thanks, guys. I did a bunch of reading on the OSHA site as well, and found no requirement for an e-stop that is not part of the factory-packaged crane itself. Even so, I will advise against getting rid of it. Just one hurt employee could cost a company far, far more than the bill for retrofitting a hundred shop cranes.
 
iwire said:
I would not consider the person making that statement to be qualified.
Click to expand...


I could not agree more.
He may own the place but if something happens whoever gets hurt will own everything you now have.
Don't remove it......
 
iwire said:
bcorbin said:
However, the client is considering the hassle of someone seeing it, and then making him install them on all of the other shop cranes in the facility.
Click to expand...
I would not consider the person making that statement to be qualified.
Click to expand...
Also, anyone who had the authority to enforce such an addition would not need to see an E-stop to be reminded to look for them elsewhere.
 
jeremysterling said:
Check ANSI B30 section for overhead crane requirements. Also, CMAA (Crane Manufacturers Association of America.)

The NEC, IMO, all you are required to have is lockable disconnect within sight of the crane.

The E-stop is a great idea in case an up contactor welds shut and the crane two-blocks, snaps the rope or chain and drops the load on the operator or riggers below.

You may be liable in this event if you are the one that removes the E-stop.

IMO, don't remove the E-stop.
Click to expand...
how does an estop help if a contactor welds up?
 
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