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    I.S. EN 16726:2015

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H

    Available format(s):  Hardcopy, PDF

    Superseded date:  28-02-2016

    Language(s): 

    Published date:  11-01-2016

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    National Foreword
    European foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Reference conditions and pressure units
    5 Requirements
    Annex A (normative) - Calculation of methane number
            of gaseous fuels for engines
    Annex B (informative) - Sulfur
    Annex C (informative) - Water dew point and hydrocarbon
            dew point
    Annex D (informative) - Background for not including a
            Wobbe Index range into this standard
    Annex E (informative) - Hydrogen - Admissible Concentrations in
            natural gas systems
    Annex F (informative) - Sampling
    Annex G (informative) - Adeviations
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines gas quality characteristics, parameters and their limits, for gases classified as group H that are to be transmitted, injected into and from storages, distributed and utilized

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

    Committee TC 234
    Document Type Standard
    Product Note The date of any NSAI previous adoption may not match the date of its original CEN/CENELEC document.
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

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

    ISO 10715:1997 Natural gas — Sampling guidelines
    EN ISO 6974-6:2005 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using three capillary columns (ISO 6974-6:2002)
    EN ISO 6326-1:2009 Natural gas - Determination of sulfur compounds - Part 1: General introduction (ISO 6326-1:2007)
    EN ISO 13443:2005 Natural gas - Standard reference conditions (ISO 13443:1996 including Corrigendum 1:1997)
    ISO 6974-6:2002 Natural gas Determination of composition with defined uncertainty by gas chromatography Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using three capillary columns
    ISO 6976:2016 Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
    ISO 15971:2008 Natural gas Measurement of properties Calorific value and Wobbe index
    ISO 6327:1981 Gas analysis — Determination of the water dew point of natural gas — Cooled surface condensation hygrometers
    EN ISO 6327:2008 Gas analysis - Determination of the water dew point of natural gas - Cooled surface condensation hygrometers (ISO 6327:1981)
    EN ISO 6570:2004 Natural gas - Determination of potential hydrocarbon liquid content - Gravimetric methods (ISO 6570:2001)
    EN ISO 18453:2005 Natural gas - Correlation between water content and water dew point (ISO 18453:2004)
    ISO 6974-2:2012 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 2: Uncertainty calculations
    ISO 6974-4:2000 Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 4: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns
    EN ISO 10101-1:1998 Natural gas - Determination of water by the Karl Fischer method - Part 1: Introduction (ISO 10101-1:1993)
    EN ISO 6326-5:1997 Natural gas - Determination of sulfur compounds - Part 5: Lingener combustion method (ISO 6326-5:1989)
    EN 1594:2013 Gas infrastructure - Pipelines for maximum operating pressure over 16 bar - Functional requirements
    EN ISO 6974-5:2014 Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 5: Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons (ISO 6974-5:2014)
    ISO/TR 12148:2009 Natural gas — Calibration of chilled mirror type instruments for hydrocarbon dewpoint (liquid formation)
    ISO 6975:1997 Natural gas — Extended analysis — Gas-chromatographic method
    ISO 6974-3:2000 Natural gas Determination of composition with defined uncertainty by gas chromatography Part 3: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columns
    ISO 10101-1:1993 Natural gas — Determination of water by the Karl Fischer method — Part 1: Introduction
    EN ISO 10101-2:1998 Natural gas - Determination of water by the Karl Fischer method - Part 2: Titration procedure (ISO 10101-2:1993)
    EN ISO 15971 : 2014 NATURAL GAS - MEASUREMENT OF PROPERTIES - CALORIFIC VALUE AND WOBBE INDEX (ISO 15971:2008)
    ISO 15970:2008 Natural gas Measurement of properties Volumetric properties: density, pressure, temperature and compression factor
    EN 437:2003+A1:2009 Test gases - Test pressures - Appliance categories
    ISO 14532:2014 Natural gas — Vocabulary
    EN ISO 6974-2:2012 Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 2: Uncertainty calculations (ISO 6974-2:2012)
    ISO 10101-2:1993 Natural gas — Determination of water by the Karl Fischer method — Part 2: Titration procedure
    ISO 13443:1996 Natural gas Standard reference conditions
    ISO 10101-3:1993 Natural gas — Determination of water by the Karl Fischer method — Part 3: Coulometric procedure
    EN ISO 6326-3:1997 Natural gas - Determination of sulfur compounds - Part 3: Determination of hydrogen sulfide, mercaptan sulfur and carbonyl sulfide sulfur by potentiometry (ISO 6326-3:1989)
    EN ISO 19739:2005/AC:2009 NATURAL GAS - DETERMINATION OF SULFUR COMPOUNDS USING GAS CHROMATOGRAPHY
    ISO 6326-1:2007 Natural gas Determination of sulfur compounds Part 1: General introduction
    ISO 14912:2003 Gas analysis — Conversion of gas mixture composition data
    EN ISO 6974-1:2012/AC:2012 NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 1: GENERAL GUIDELINES AND CALCULATION OF COMPOSITION (ISO 6974-1:2012/COR 1:2012)
    EN ISO 14532:2017 Natural gas - Vocabulary (ISO 14532:2014)
    ISO 23874:2006 Natural gas Gas chromatographic requirements for hydrocarbon dewpoint calculation
    EN ISO 6975:2005 Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997)
    ISO 6974-1:2012 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 1: General guidelines and calculation of composition
    ISO 12213-1:2006 Natural gas Calculation of compression factor Part 1: Introduction and guidelines
    EN ISO 6974-4:2001 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns (ISO 6974-4:2000)
    ISO 6326-5:1989 Natural gas Determination of sulfur compounds Part 5: Lingener combustion method
    EN ISO 6976:2016 Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition (ISO 6976:2016)
    EN ISO 10715:2000 Natural gas - Sampling guidelines (ISO 10715:1997)
    ISO 6326-3:1989 Natural gas Determination of sulfur compounds Part 3: Determination of hydrogen sulfide, mercaptan sulfur and carbonyl sulfide sulfur by potentiometry
    EN ISO 12213-1:2009 Natural gas - Calculation of compression factor - Part 1: Introduction and guidelines (ISO 12213-1:2006)
    ISO 19739:2004 Natural gas — Determination of sulfur compounds using gas chromatography
    ISO 18453:2004 Natural gas — Correlation between water content and water dew point
    ISO 6974-5:2014 Natural gas Determination of composition and associated uncertainty by gas chromatography Part 5: Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons
    ISO 6570:2001 Natural gas — Determination of potential hydrocarbon liquid content — Gravimetric methods
    EN ISO 10101-3:1998 Natural gas - Determination of water by the Karl Fischer method - Part 3: Coulometric procedure (ISO 10101-3:1993)
    EN ISO 15970:2014 Natural gas - Measurement of properties - Volumetric properties: density, pressure, temperature and compression factor (ISO 15970:2008)
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