Welding Machines And Cutting Equipments

All arc completely, insulated, flexible type, capable of handling the maximum current requirements of the work in progress, taking into account the duty cycle under which the arc welder or cutter is working.

The unit is to be installed by the manufacturer on the cutting table provided and integrated with the existing equipment by the manufacturer. This equipment must be certified safe for use in explosive operations. As of this date, only one source has been qualified.

The frames of all Arc welding and cutting machines shall be grounded either through a third wire in the cable containing the circuit conductor or through a separate wire which is grounded at the source of the current. Grounding circuits, other than by means of the structure, shall be checked to ensure that the circuit between the ground and the grounded power conductor has resistance low enough to permit sufficient current to flow to cause the fuse or circuit breaker to interrupt the current.

Whenever practicable, all Arc welding and cutting operations shall be shielded by noncombustible or flameproof screens which will protect employees and other persons working in the vicinity from the direct rays of the arc.

When operations are suspended for any substantial period of time, such as during lunch or overnight, welding machines shall be shut off at some point outside the confined space. Where practicable, The electrodes and electrode holders shall be removed from the confined space. Upon completion or discontinuance of welding operations, the welder shall provide some means of warning other workers of the location of hot metal.