WASHINGTON, Dec. 27 -- The Defense Nuclear Facilities Safety Board issued the following letter on Dec. 19, 2023: * * * To: The Honorable Jennifer M. Granholm, Secretary of Energy, US Department of Energy, 1000 Independence Avenue, SW, Washington, DC 20585-1000 Dear Secretary Granholm: The Defense Nuclear Facilities Safety Board (Board) reviews and evaluates the content and implementation of the Department of Energy's (DOE) safety standards (e.g., directives and technical standards) pertainin  more