What constitutes a detailed design drawing for a transportation package or spent fuel cask?
Detailed design drawings for transportation or spent fuel cask are typically submitted in the safety analysis report (SAR) associated with the design. Traditionally, some of these detailed design drawings are withheld from the public because they are considered proprietary. The NRC staff now believes most drawings that show how a package is assembled and that contain minor dimensions should be protected. High-level drawings such as the one below are not considered to be detailed design drawings by the staff. The information in the drawing below is generally well-known, and aids the public in understanding the design.
