National Aeronautics and Space Administration (NASA). This NASA Marshal Work Instruction. Effective Date: August 4, 2005. Expiration Date: August 4, 2010. 18 p. This Marshall Work Instruction (MWI) establishes the processes and responsibilities for the implementation of an effective Continuous Risk Management (CRM) process at Marshall Space Flight Center (MSFC). Continuous Risk Management is an essential process for managing MSFC’s assets and programs, as established by NASA Procedural Requirements (NPR) 7120.5, Program and Project Management Processes and Requirements and NPR 8000.4, Risk Management Procedural Requirements.