How can a NWM organization maintain continuity of expertise and capabilities over what could be a decades-long mission? NWM organizations world-wide have realized that preservation of knowledge for their many complex systems is a risk worsened by the long timescales. A robust knowledge management (KM) program is essential for maintenance of the specialized expertise needed for safety, security, and performance objectives. Key considerations for designing, implementing, and maintaining an effective knowledge management program will be discussed during this session. A demonstration of the DOE-Office of Nuclear Energy KM repository and its NWM Taxonomy will be included in the discussion.