This technical report provides practical information on the use of encapsulated blast media for repairing existing interior and exterior coatings on railroad tank cars (hereafter referred to as tank cars). This report: 1) introduces the technology; 2) describes typical abrasives, equipment, and processes used; and 3) provides a comparison to some other coating repair surface preparation methods typically used in the rail industry.
This standard practice addresses the need for quality application of coatings to the interior surfaces of steel rail tank cars transporting molten sulfur. It covers surface preparation; selection and application of coating materials; inspection of the completed coating system; and testing using adequate, readily available instruments. This standard provides guidelines to the builder, owner, shipper, and all those involved in the production and use of rail tank cars intended for the transport of molten sulfur.
This AMPP standard is specifically targeted for use by tank car owners, operators, and repairers who are seeking guidanceincomplyingwithfederalregulationsregardinginteriorcoating/liningconditiondatacollectionandanalysis.It should be noted that issues similar to those discussed here may arise with other bulk liquid transportation containers, and this document may find applicability in those areas as well.