标准编号：ISO 19970:2017
中文名称：冷藏碳氢化合物和非石油的液化气体燃料 作为燃料液化天然气运营商在货物转移操作的天然气计量
英文名称：Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels — Metering of gas as fuel on LNG carriers during cargo transfer operations
发布日期：2017-06
标准范围
This document specifies minimum requirements to quantify the boil-off gas (BOG) consumed on liquefied natural gas (LNG) carriers for their own functions, notably for power generation, during cargo transfer operations. BOG in this document refers to the low molecular gas returned from shore tanks to ships’ tanks and the gas produced in ships’ cargo tanks.
This document provides requirements for the metering of BOG and the subsequent calorific value calculations which can be taken into account when the energy transferred during cargo transfer is determined. This document also introduces performance requirements and calibration of the elements included in the BOG measurement system. A flowmeter of any type may be used to measure BOG as long as it meets the performance requirements specified in this document.
This document, with some modification, can also be applied to the measurement of BOG consumed by LNG carriers at sea.
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