Section R. 408.11205 - Definitions; P to WRule 1205.
(1) "Press welding machine" means a machine that utilizes 2 platens, 1 of which moves toward the other during the initial part of the machine cycle. It does not provide welding pressure. After 1 of the platens has moved to a stop position, the welding pressure required for the welding operation is applied by 1 or more air or hydraulic cylinders.(2) "Psig" means pounds per square inch as measured by a gauge.(3) "Resistance welding" means the joining of metals by the use of heat generated at the joint by the resistance to the flow of electric current and by the application of pressure.(4) "Soldering" means a process of joining metals without melting them using a filler metal melting at 800 degrees Fahrenheit, 427 degrees centigrade, or below.(5) "Spot welding" means a form of resistance welding in which the current and pressure are restricted to the spot of metal surfaces directly in contact between the electrodes.(6) "Storage" means the storage of filled or empty cylinders not in use. An oxidizing and fuel gas cylinder or cylinders used as a unit shall not be considered to be in storage.(7) "Water capacity" means the weight of water, as related to liquefied gas, of a volume equivalent to that of the cylinder.(8) "Welder" means a person capable of performing a manual or semiautomatic welding operation.(9) "Welding operator" means a person who operates a machine or automatic welding equipment.Mich. Admin. Code R. 408.11205