Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM MNL50
• Năm ban hành / Publication date: 2005
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Characterization and Properties of Petroleum Fractions, Manual 50
• Số trang / Page: 435
• Phạm vi áp dụng / Scope of standard: This collection of volume-correction-factor and related tables is used worldwide in custody transfer and accounting operations to adjust bulk volumes of crude oil and products measured at temperatures other than base temperature ( 60 ° F or 15 ° C) to the base temperature. The tables, which have been approved by ASTM, the American Petroleum Institute, and the Institute of Petroleum (United Kingdom), supersede all previous editions of ANSI/ASTM D 1250, IP 200, and API 2540 and have been adopted as an international standard by the International Organization for Standardization.; ; The 3 sets of previously published tables were in terms of API gravity (Tables 5&6), specific gravity (Tables 23&24 ), and density in kg/m3 (Tables 53&54 ). Tables 23&24 are now in relative density units. For accuracy and convenience, 2 or 3 separate tables replace each previous table. For example, Table 6 has been superseded by 6A, Generalized Crude Oils; 6B, Generalized Products; and 6C, Volume Correction Factors for Individual and Special Applications.; ; Volume X contains computer subroutine listings, example problems, and instructions necessary to use the computer subroutines. Use of this volume with a computer subroutine is a major conceptual departure from previous versions of the tables and recognizes the increasing use of computers to calculate volume correction in the petroleum industry. The actual standard is neither the printed tables nor the set of equations used to represent the density data, but is an explicit implementation procedure used to develop computer subroutines. Strict adherence to the procedures will ensure that all computers and computer codes of the future will produce identical results.