NASA-NPR 8705.5 Probabilistic Risk Assessment (PRA) Procedures for NASA Programs and Projects

National Aeronautics and Space Administration (NASA). This NASA Procedural Requirements. Effective Date: July 17, 2004. Expiration Date: July 17, 2009. 18 p. This NPR provides basic requirements for performing a probabilistic risk assessment (PRA) for a NASA program or project. It addresses technical and safety risk and does not address programmatic risk involving consideration of cost and schedule.