The Department of Energy, specifically the Idaho Operations Office, is seeking information regarding the Package Performance Demonstration (PPD) related to spent nuclear fuel (SNF) transportation casks. The objective of this Request for Information (RFI)/Sources Sought Notice is to explore options for demonstrating the safety and reliability of SNF transportation methods, including rail, heavy-haul truck, and barge, under hypothetical accident conditions as outlined in Title 10 of the Code of Federal Regulations Part 71. This initiative is crucial for building public trust in the safety of nuclear fuel transportation. Interested parties should note that the response deadline has been extended to 5:00 p.m. MDT on October 31, 2024, and can direct inquiries to David Hawkes at DOE-PPD@id.doe.gov.