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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.
Addendum 3 to Allocation Measurement of Oil and Natural Gas: Allocation Measurement
Adjunct of the standard published on 1.12.2017
Selected format:Errata 1 to Allocation Measurement of Oil and Natural Gas: Allocation Measurement
Adjunct of the standard published on 1.11.2022
Selected format:Production Allocation Measurement Using Single-phase Devices, First Edition
Standard published on 1.11.2016
Selected format:Measurement of Multiphase Flow, Second Edition
Standard published on 1.2.2024
Selected format:Recommended Practice for Application of Production Well Testing in Measurement and Allocation, First Edition, Includes Errata 1 (2023)
Standard published on 1.12.2017
Selected format:Errata 1 to Recommended Practice for Application of Production Well Testing in Measurement and Allocation, First Edition
Adjunct of the standard published on 1.8.2023
Selected format:Venting Atmospheric and Low-pressure Storage Tanks, Eighth Edition
Standard published on 1.8.2026
Selected format:Fire Protection in Refineries, Tenth Edition, Includes Addendum 1 (2024)
Standard published on 1.7.2019
Selected format:Addendum 1 to Fire Protection in Refineries, Tenth Edition
Adjunct of the standard published on 1.10.2024
Selected format:Safe Welding, Cutting, and Hot Work Practices in the Petroleum and Petrochemical Industries, Eighth Edition
Standard published on 1.3.2022
Selected format:Latest update: 2026-10-23 (Number of items: 2 207 789)
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