API MPMS 12.1.2 2018 pdf free download

API MPMS 12.1.2 2018 pdf free download.Manual of Petroleum Standards Chapter 12—Calculation of Petroleum Quantities Section 1—Calculation of Static Petroleum Quantities Part 2—Calculation Procedures for Tank Cars.
1 Scope This chapter is applicable to all crude oils, petroleum products, and petrochemicals (including LPGs and other liquefied gases) transported by rail tank car. It does not cover any products loaded or measured as solids. It defines the terms required to understand the calculations and provides instructions for their use. The cars are assumed to be on level ground. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only edition cited applies. For undated references, the latest edition of the referenced document applies (including any addenda or errata, or both). API Manual of Petroleum Measurement Standards (MPMS) Chapter 1, Vocabulary API Manual of Petroleum Measurement Standards (MPMS) Chapter 3.2, Tank Car Measurement API Manual of Petroleum Measurement Standards (MPMS) Chapter 10, Sediment and Water API Manual of Petroleum Measurement Standards (MPMS) Chapter 11.2.4, Temperature Correction for the Volume of NGL and LPG, Tables 23E, 24E, 53E, 54E, 59E, and 60E API Manual of Petroleum Measurement Standards (MPMS) Chapter 11.2.5, A Simplified Vapor Pressure Correlation for Commercial NGLs API Manual of Petroleum Measurement Standards (MPMS) Chapter 12.2, Calculation of Petroleum Quantities Using Dynamic Measurement Methods and Volumetric Correction Factors ASTM D1555, Standard Test Method for Calculation of Volume and Weight of Industrial Aromatic Hydrocarbons and Cyclohexane 3 Terms, Definitions, Acronyms, and Abbreviations For the purposes of this document, the following terms and definitions apply. Terms of more general use (i.e. API Gravity, Density, etc.) may be found in API MPMS Chapter 1. 3.1 General 3.1.1 capacity table adjustment factor CTAF Correction applied to capacity table volumes. 3.1.2 closed loading or closed unloading The manway remains closed or covered during loading or unloading.
3.1.3 compartment car A car with two or more independent (no common walls) tanks, each with its own manway, reference point, and capacity table. 3.1.4 correction, pressure, liquid CPL Compensates for the effect of pressure on a liquid. 3.1.5 correction, pressure, shell CPS Correction factor for the effect of pressure on a steel container. 3.1.6 correction, sediment & water CSW Corrects a volume, usually at standard temperature, for the effects of suspended sediment and water (S&W). 3.1.7 correction, temperature, liquid CTL Compensates for the effect of temperature on a liquid. 3.1.8 correction, temperature, shell CTS h The correction factor for the effect of the temperature, both ambient and liquid, on the shell of the tank. 3.1.9 custody transfer measurement The measurements specific to a change in ownership or a change in responsibility for commodities, or both. 3.1.10 DOT filling limit The minimum outage (vapor) volume required at statutory temperature, expressed as percentage of the total capacity of a tank car, required by DOT regulations [49 CFR 173.24b or 173.314 (as of this printing)]. 3.1.11 funnel flow cars Tank cars that have a slight “V” shape to allow drainage. 3.1.12 general purpose tank car A non-pressure tank car designed and constructed under DOT regulations to transport liquids of relatively low volatility, such as asphalts, crude oils, fuel oils, solvents, specialty chemicals, etc. 3.1.13 gross observed volume GOV The total observed volume (TOV) of all petroleum or chemical liquids and sediment and water (S&W), excluding free water (FW), at observed temperature and pressure.
3.1.14 gross standard volume GSV The gross volume (GV) or gross observed volume (GOV) corrected to base temperature and pressure conditions. 3.1.15 heel The amount of product liquid and vapor present in a car before loading or left in a car after unloading. 3.1.16 innage gauge The depth of liquid in a tank measured from the datum plate or tank bottom up to the surface of the liquid. 3.1.17 interior lining The surface coating applied to the interior of a tank car shell to prevent the contents from contacting the metal shell. 3.1.18 light weight tare The number painted on the sides of a [rail] tank car near its ends indicating the empty weight of the car. 3.1.19 liquefied gas A generic term referring to gases (such as ammonia, butylene, propylene, ethylene oxide, propylene oxide, etc.) stored and transported under pressure as a liquid. 3.1.20 liquefied petroleum gas LPG A gas that is predominantly propane, butane, propylene or butylene, either separately or in mixtures, with limited amounts of hydrocarbons and inert gases, which are maintained in a liquid state under pressure or at reduced temperature, or both. 3.1.21 liquid equivalent The quantity of liquid product contained as a gas in the vapor space above the liquid surface in a pressure container. 3.1.22 [weight] load limit The number on the sides of a rail tank car near its ends indicating the maximum legal weight of its contents. 3.1.23 magnetic float gauge A gauging device employing a floating magnet to permit measuring the liquid level in a container without opening the container to the atmosphere.