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API (American Petroleum Institute) is a leader in the development of petroleum and petrochemical equipment and operating standards covering topics that range from drill bits to environmental protection. These embrace proven, sound engineering and operating practices and safe, interchangeable equipment and materials. Many have been incorporated into state and federal regulations and adopted by ISO for worldwide acceptance.
Land Drilling Practices for Protection of the Environment
Standard published on 1.7.1995
Selected format:Sizing, Selection, and Installation of Pressure-relieving Devices Part I - Sizing and Selection, Tenth Edition, Includes Errata 1 (2023)
Standard published on 1.10.2020
Selected format:Errata 1 to Sizing, Selection, and Installation of Pressure-relieving Devices Part I - Sizing and Selection, Tenth Edition
Adjunct of the standard published on 1.5.2023
Selected format:Sizing, Selection, and Installation of Pressure-relieving Devices: Part II - Installation, Seventh Edition
Standard published on 1.10.2020
Selected format:Pressure-relieving and Depressuring Systems, Seventh Edition, Includes Errata 1 (2022)
Standard published on 31.5.2020
Selected format:Errata 1 to Pressure-relieving and Depressuring Systems, Seventh Edition
Adjunct of the standard published on 1.11.2022
Selected format:Technical Report on Pressure-relief System Calculations, First Edition, Includes Errata (2023)
Standard published on 1.4.2022
Selected format:Errata to Technical Report on Pressure-relief System Calculations, First Edition
Adjunct of the standard published on 1.10.2023
Selected format:Flanged Steel Pressure-relief Valves, Eighth Edition
Standard published on 1.8.2023
Selected format:Seat Tightness of Pressure Relief Valves, Fifth Edition
Standard published on 1.7.2020
Selected format:Latest update: 2026-08-21 (Number of items: 2 298 377)
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