This standard API MPMS CH 2.4:2024 outlines the procedures necessary to create a capacity table for a tank car. It specifically addresses calibration procedures for both pressure and non-pressure tank cars.
The primary objective of tank cars is to securely and safely transport petroleum and petrochemical materials while also serving as measurement tools for these substances. This document focuses on the development and standardization of capacity tables utilized in these measurements. The actual determination of the volume of material contained within a tank car is addressed in Chapter 3.2 of the API Manual of Petroleum Measurement Standards.