Do you think this rises to the level of class II div 2? 500(C)(2)(3)
(3) In which combustible dust accumulations on, in, or in the vicinity of the electrical equipment could be sufficient to interfere with the safe dissipation of heat from electrical equipment, or could be ignitible by abnormal operation or failure of electrical equipment.
Turns out that in order to comply with ALL codes, this process is being abandoned, and will be removed from the structure.
Engineering ideas ranged from controlled sectioning-off of that area with dust collection; which would place the equip in the pic outside of the dust area. Replaceing the electrical with dust-tite, sealing the conduits, and replaceing the motors, etc is cost prohibitive. Outright dust control/management could not be achieved, per engineers.
All in all, it was correcting a possible bad situation beforehand.
`s`: The scenario to this 'find' was an 'open' permit that I gave to my inspector for clean-up of a 480 feeder & panel, xfr, & 120/208 panel. The process machinery was not on the permit. He discovered the situation (3 to 4" of 'dust' on & in the equipment)
A call to the EC of record to get his act together quick, and as that fell on deaf ears...the protocol that I have to follow was initiated.
Without the nitty/gritty, IF the EC would have called for an inspection in a timely manner, as soon as his work was done......he would have been golden & no one would have seen this unless there was a need for emergency response. It's amazing how much 'bad' is tripped upon by people excersizing there rights of stupidity!
I considered writing a book about all this stuff.....but no one would believe...