[Steven Smith]

The primary "OSHA like" regulation I'd use (as someone who deals with it daily) is lock-out / tag-out, which is sufficient for purposes of working on a robot.

I'm not actually saying to apply a locking device on the computer, but in general... but either by direct control (throwing breaker) or procedure, make it well known that robots are not to be enabled when anyone is working on them.

The bigger concern I typically see is just people getting too close to robots moving (whether it be a pinch point or just something moving quickly with lots of mass). It's particularly an issue on practice fields at events, with 6 teams + drivers + pit all standing around trying to troubleshoot an issue, with moving robots less than 5 feet away from them.