... document are requirements for design, inspection, and certification of ground-based pressure vessels and pressurized systems (PV/S) owned and/ or operated by JSC and of all PV/S used on JSC property ... requirements of NASA Policy Directive (NPD) 8710.5, NASA Safety Policy for Pressure Vessels and Pressurized Systems, and JSC Policy Directive (JPD) 1710.1, Design, Inspection, and Certification of Pressure ... considered mandatory 2.1 NASA DOCUMENTS a JPD 1710.1, Design, Inspection, and Certification of Pressure Vessels and Pressurized Systems b JPG 1700.1, Johnson Space Center Safety and Health Handbook...