NASA-NPR 8705.2B w/change 4 dated 8/21/2012. Human-Rating Requirements for Space Systems

National Aeronautics and Space Administration (NASA). This NASA Procedural Requirements. Effective Date: May 06, 2008. Expiration Date: May 06, 2016. 49 p. NASA's policy is to protect the health and safety of humans involved in or exposed to space activities, specifically the public, crew, passengers, and ground personnel. This policy is implemented through the application of NASA directives and standards.
The significant monetary investment for complex space hardware requires all missions to meet high standards of reliability and mission success. The purpose of this NASA Procedural Requirements (NPR) document is to define and implement the additional processes, procedures, and requirements necessary to produce human-rated space systems that protect the safety of crew members and passengers on NASA space missions