AUSTIN, Texas–(BUSINESS WIRE)–Last Energy, an advanced nuclear technology company, announced today that the U.S. Department of Energy (DOE) has approved the company’s Documented Safety Analysis (DSA) for its pilot reactor at Texas A&M–RELLIS. The DSA is the final and most comprehensive safety analysis in the DOE authorization process. It documents in detail how Last Energy’s reactor and facility will be operated safely, building on the company’s Preliminary Documented Safety Analysis (PDS