TORRANCE, Calif.–(BUSINESS WIRE)–Antares today announced that the U.S. Department of Energy (DOE) has approved the Nuclear Safety Design Agreement (NSDA) for Mark-1, the company’s first electricity-producing reactor. The approval is the first step in DOE’s authorization pathway for Mark-1 and establishes the design requirements, safety analysis approach, and regulatory expectations that will govern the reactor through construction and operation. Mark-1 is designed to operate at full electrica