This Code applies to piping for all fluids including: (1) raw, intermediate, and finished chemicals, (2) petroleum products, (3) gas, steam, air and water, (4) fluidized solids, (5) refrigerants, and (6) cryogenic fluids. Also included is piping that interconnects pieces or stages within a packaged equipment assembly. Key changes to this revision include: �¦ Severe Cyclic Conditions �¦ MPa Allowable Stresses �¦ Expansion Joints �¦ Flange Joint Assembly �¦ Ultrasonic Examination Acceptance Criteria �¦ Category M Fluid Service Examination �¦ Leak Testing of Instrument Connections �¦ Leak Testing of Vacuum Systems �¦ Leak Testing of Insulated Systems �¦ Leak Testing of Assembled Piping