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  • ISO 19970:2017

    Current The latest, up-to-date edition.

    Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels — Metering of gas as fuel on LNG carriers during cargo transfer operations

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English

    Published date:  24-05-2017

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    ISO 19970:2017 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.

    ISO 19970:2017 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.

    ISO 19970:2017, with some modification, can also be applied to the measurement of BOG consumed by LNG carriers at sea.

    General Product Information - (Show below) - (Hide below)

    Development Note Supersedes ISO/DIS 19970. (05/2017)
    Document Type Standard
    Product Note THIS STANDARD ALSO REFERS TO OIML R 137-2
    Publisher International Organization for Standardization
    Status Current

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 6976:2016 Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
    ISO 5168:2005 Measurement of fluid flow — Procedures for the evaluation of uncertainties
    ISO 8310:2012 Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels — General requirements for automatic tank thermometers on board marine carriers and floating storage
    ISO 1998-6:2000 Petroleum industry — Terminology — Part 6: Measurement
    ISO 14511:2001 Measurement of fluid flow in closed conduits Thermal mass flowmeters
    ISO 18132-1:2011 Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels — General requirements for automatic tank gauges — Part 1: Automatic tank gauges for liquefied natural gas on board marine carriers and floating storage
    IEC 60092-504:2016 Electrical installations in ships - Part 504: Automation, control and instrumentation
    ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
    ISO 5167-2:2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 2: Orifice plates
    OIML R 137-1 : 2006 GAS METERS - PART 1: REQUIREMENTS
    ISO 5167-1:2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements
    ISO 10790:2015 Measurement of fluid flow in closed conduits Guidance to the selection, installation and use of Coriolis flowmeters (mass flow, density and volume flow measurements)
    ISO 6578:2017 Refrigerated hydrocarbon liquids — Static measurement — Calculation procedure
    ISO 17089-1:2010 Measurement of fluid flow in closed conduits - Ultrasonic meters for gas Part 1: Meters for custody transfer and allocation measurement
    ISO 2186:2007 Fluid flow in closed conduits — Connections for pressure signal transmissions between primary and secondary elements
    IEC 60092-101:1994+AMD1:1995 CSV Electrical installations in ships - Part 101: Definitions and general requirements
    ISO 10976:2015 Refrigerated light hydrocarbon fluids — Measurement of cargoes on board LNG carriers
    API TR 2571 : 2011 FUEL GAS MEASUREMENT
    OIML R 140 : 2007 MEASURING SYSTEMS FOR GASEOUS FUEL
    ISO 4006:1991 Measurement of fluid flow in closed conduits — Vocabulary and symbols
    ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
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