API STD 622-2018 Type Testing of Process Valve Packing for Fugitive Emissions (THIRD EDITION) API STD 6FA-2018 Standard for Fire Test for Valves (FOURTH EDITION; ERTA 1_ JULY 2018; ERTA 2_ AUGUS API STD 2015-2018 Requirements for Safe Entry and Cleaning of Petroleum Storage Tanks (EIGHTH EDITIO API STD 20L-2018 Qualification of Polymeric Seal Manufacturers for Use in the Petroleum and Natural API STD 976-2018 Refractory Installation Quality Control - Inspection And Testing Of Aes_Rcf Fiber L API RP 2027-2018 Ignition Hazards and Safe Work Practices for Abrasive Blasting of Atmospheric Stora API RP 934-E-2018 Recommended Practice for Materials and Fabrication of 1_Cr-_Mo Steel Pressure Vess API RP 5C6-2018 Pipe with Welded Connectors (THIRD EDITION)