MIL-STD-1522A, MILITARY STANDARD: STANDARD GENERAL REQUIREMENTS FOR SAFE DESIGN AND OPERATION OF PRESSURIZED MISSILE AND SPACE SYSTEMS (28 MAY 1984)., This standard establishes requirements for the design and test of all pressurized systems for missiles, space vehicles and ground support equipment. These requirements, when implemented on a particular pressurized system, will assure a high level of confidence in achieving safe operation and mission success.