Confined space (and all the regulation that accompanies this work) for most railcar internals.
Widely varied types of coating to be removed, which can be totally different from car to car- that affect production time, and thus throughput scheduling.
The variation in coatings to be applied leads to major variation in surface profile requirements. This makes QC work an even more challenging task.
As most types of work, on most types of railcars requires the operator to be working at height, all applicable fall protection and height safety equipment should be worn. Proper access control and documentation should apply to the confined space considerations as well.