API RP 934-E-2018 Recommended Practice for Materials and Fabrication of 1_Cr-_Mo Steel Pressure Vess API RP 14F-2018 Recommended Practice for Design API RP 505-2018 Recommended Practice for Classification of Locations for Electrical Installations at API SPEC 6A-2018 Specification for Wellhead and Tree Equipment (TWENTY-FIRST EDITION; API Monogram p API RP 578-2018 Guidelines for a Material Verification Program (MVP) for New and Existing Assets (Th API RP 2027-2018 Ignition Hazards and Safe Work Practices for Abrasive Blasting of Atmospheric Stora API RP 1115-2018 Design and Operation of Solution-mined Salt Caverns Used for Liquid Hydrocarbon Sto API TR 6MET-2018 Metallic Material Limits for Wellhead Equipment Used in High Temperature for API 6A