Section R. 408.11295 - Portable acetylene generatorsRule 1295.
(1) A portable acetylene generator shall not be used within less than 10 feet (3.2 m) of combustible material other than the floor. Ceiling height shall be not less than 10 feet (3.2 m).(2) A portable generator shall be located in a room with a total volume of not less than 35 times the total gas generating capacity per charge of all generators in the room. The gas generating capacity in cubic feet per charge is figured by multiplying the pounds of carbide per charge by 4 1/2.(3) A portable acetylene generator shall: (a) Be protected from freezing. Salt or other corrosive chemicals shall not be used.(b) Be cleaned, recharged and the air mixture blown off outside the building.(c) Not be moved by a crane or derrick when charged. When transported and operated on a vehicle, it shall be secured to the vehicle. The generator shall not be operated, charged or cleaned while vehicle motor is running.(d) Not be stored in a room in which an open flame is used unless the generator contains no carbide and has been purged of acetylene. The storage room shall be ventilated.(e) Be protected from any source of spark or flame.(4) A portable generator shall be of a type approved for portable use.Mich. Admin. Code R. 408.11295