本文件规定了燃料气供应系统（FGS）的压力、流速、温度和系统稳定性等特性的评估方法，这些系统的制造目的是使用汽化液化天然气（LNG）或蒸发气作为燃料气供应给船舶的天然气用户。本标准适用于评估LNG FGSS的性能:（1）在交付之前或在船上安装之后，以及（2）确保在船舶气体试验或海上试验期间，整个气体消耗装置都考虑了系统特性。

This document specifies evaluation methods of characteristics such as pressure, flow rate, temperature and system stability of fuel gas supply systems (FGSS), which are manufactured to use vaporized liquefied natural gas (LNG) or boil-off gas as fuel gas supply to the vessel's gas consumers. It is applicable to evaluate the performance of the LNG FGSS: (1) prior to delivery or after installation on board a ship, and (2) to assure the system characteristics are taken into account for the entire gas consumers during ship’s gas trial or sea trial.