I am currently being hammered by a contract "Safety Specialist" regarding the doors being left open on circuit breaker panels. I agree it's not a good idea, but all this guy keeps saying is..."it's a violation", ok, of what, can't find an OSHA standard that it violates, checked NFPA 70E and couldn't find it. Did I miss it somewhere? Is it some violation of one of these standards, if so, can someone point me in the right direction?