Abstract: An apparatus for welding, including a lift mechanism for lifting a personnel platform attached to an end of the lift mechanism, a drive system for moving the apparatus, where the drive system includes a DC power source, a set of controls mounted on the platform for controlling the drive system and the lift mechanism, and an electric arc welding system for creating a DC welding arc between an electrode and a workpiece, where the welding system is mounted on the personnel platform and powered by the DC power source.

Abstract: The concept of a barrier coating is applicable to any structure that requires repetitive paint removal. In principle, the coating is applied between a corrosion protective primer and protective topcoat for the purpose of encapsulating the corrosion resistant properties of the primer/surface treatment and allowing for a selective removal of the topcoat using acceptable mechanical coatings removal techniques. The 5-part coating system can be used on any type of structure that requires routine maintenance or repainting to preserve the integrity and/or appearance of the structure. Benefits associated with the concept of barrier coating include a significant reduction in the costs and manpower required to remove and reapply primer and topcoat systems from air- and land-based transportation vehicles, storage buildings, bridges and miscellaneous other structural applications.