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For Line Item Projects, approval of mission need is documented by DOE with Critical Decision-0 (CD-0). The Initiation Phase begins with the identification of a mission-related need. Approval of CD-0 formally establishes a project and begins the process of conceptual planning and design used to develop alternative concepts and functional requirements.
The Project Director and/or Project Manager performs Pre-conceptual Planning, focusing on the program’s goals, safety planning, and design, and prepares a Mission Need Statement. Detailed requirements for these documents are found in DOE Order 413.3B.
