This document provides a white paper detailing required changes to the DOE Atlas railcar conceptual cradle attachment components and Phase 1 conceptual cradle design due to the addition of the HI-STAR 190 SL and XL casks to the project. 

The United States Department of Energy (DOE) is preparing for future large-scale transport of spent 
nuclear fuel and high-level radioactive waste, which are collectively defined as High-Level Radioactive 
Material (HLRM) by the Association of American Railroads (AAR). A part of this preparation includes 
designing railcars to be used for the transport of HLRM. 
 

The United States Department of Energy (DOE) is preparing for future large-scale transport of spent nuclear fuel and high-level radioactive waste, which are collectively defined as High-Level Radioactive Material (HLRM) by the Association of American Railroads (AAR). A part of this preparation includes designing railcars to be used for the transport of HLRM.
 

In 2019, the NWMO commissioned Maawandoon Inc to lead Indigenous Dialogue session to support NWMO’s transportation planning for the long-term care of Canada’s used nuclear fuel. This research built upon and complemented public attitude research carried out in 2017 and 2018. The research methodology consisted of 7 Indigenous dialogue sessions and attendance at 3 Indigenous Annual General Assemblies (AGA)/meetings with dialogue components.