200
A confined space that:
My contain a hazardous or potentially hazardous atmosphere
May contain material which can engulf and entrant
May contain walls that converge inward or floors that slope downward and taper into a smaller area which could trap or asphyxiate an entrant
May contain other serious physical hazards such as unguarded machines, or exposed live wires
Any other safety and health hazard which is not controlled
Now becomes a?
What is permit required confined space