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NBN ISO 19970:2021
Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels — Metering of gas as fuel on LNG carriers during cargo transfer operations
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Summary
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.
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.
Technical characteristics
| Publisher | Bureau de Normalisation Belge (NBN) |
| Publication Date | 06/03/2021 |
| Page Count | 20 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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