This technical report discusses equipment, procedures, materials, and the resulting substrate conditions involved in a variety of WAB cleaning methods currently available for commercial use. It also discusses the effect that the water present with these wet cleaning methods has on achieving the defined degree of cleaning of steel surfaces in accordance with the wet abrasive blast cleaning standards found in the list of Referenced Standards and Other Consensus Documents. It is intended for use primarily by specifiers, owners, painting contractors, inspectors, and others involved in surface preparation of industrial structures.

This report was originally issued in 1998 and has been revised to include additional configurations of equipment setup as well as current (2022) developments in the design of wet abrasive blast cleaning systems and nozzles. This TR provides a foundation to assist users to determine the quantity and quality of water, abrasive, and air.