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ISO 6976:2016

Current
Current

The latest, up-to-date edition.

Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

French, English

Published date

04-08-2016

ISO 6976:2016 specifies methods for the calculation of gross calorific value, net calorific value, density, relative density, gross Wobbe index and net Wobbe index of natural gases, natural gas substitutes and other combustible gaseous fuels, when the composition of the gas by mole fraction is known. The methods specified provide the means of calculating the properties of the gas mixture at commonly used reference conditions.

Mole fractions by definition sum to unity. Guidance on the achievement of this requirement by chromatographic analysis is available in ISO 6974‑1 and ISO 6974‑2.

The methods of calculation require values for various physical properties of the pure components; these values, together with associated uncertainties, are provided in tables and their sources are identified.

Methods are given for estimating the standard uncertainties of calculated properties.

The methods of calculation of the values of properties on either a molar, mass or volume basis are applicable to any natural gas, natural gas substitute or other combustible fuel that is normally gaseous, except that for properties on the volume basis the method is restricted to mixtures for which the compression factor at reference conditions is greater than 0,9.

Example calculations are given in Annex D for the recommended methods of calculation.

NOTE 1 The qualifiers "superior", "higher", "upper" and "total" are, for the purposes of this document, synonymous with "gross"; likewise, "inferior" and "lower" are synonymous with "net". The term "heating value" is synonymous with "calorific value"; "mass density" and "specific density" are synonymous with "density"; "specific gravity" is synonymous with "relative density"; "Wobbe number" is synonymous with "Wobbe index"; "compressibility factor" is synonymous with "compression factor". The dimensionless quantity molecular weight is numerically equal to the molar mass in kg·kmol−1.

NOTE 2 There are no explicit limits of composition to which the methods described in this document are applicable. However, the restriction of volume-basis calculations to mixtures with a compression factor greater than 0,9 at reference conditions sets implicit limits on composition.

NOTE 3 Because the mole fraction of any water present is not normally available from chromatographic analysis, it is common practice to calculate the physical properties on a dry gas basis and to allow for the effects of water vapour in a separate procedure. However, if the mole fraction of water vapour is known then the property calculations can be carried out completely in accordance with the procedures described herein. The effects of water vapour on calorific value, whether the latter is directly measured or calculated, are discussed in ISO/TR 29922.

NOTE 4 For aliphatic hydrocarbons of carbon number 7 or above, any isomer present is included with the normal isomer of the same carbon number.

NOTE 5 If the user's requirement includes the replacement of, for example, a C6+ or C7+ grouping of analytically unresolved components by a single pseudo-component, then it is the user's own task to set the mole fraction composition, and hence properties, of this pseudo-component so as to be fit for purpose in the particular application. Any so-called "spectator water" and "non-combustible hydrogen sulfide" are treated as pseudo-components by setting the appropriate enthalpy of combustion values to zero.

Committee
ISO/TC 193/SC 1
DevelopmentNote
Supersedes ISO/DIS 6976. (08/2016)
DocumentType
Standard
Pages
58
PublisherName
International Organization for Standardization
Status
Current
Supersedes

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BS EN 12244-1:1998 Direct gas-fired washing machines, of nominal heat input not exceeding 20 kW Safety
I.S. EN ISO 13686:2013 NATURAL GAS - QUALITY DESIGNATION (ISO 13686:2013)
EN 12405-2:2012 Gas meters - Conversion devices - Part 2: Energy conversion
EN 12669:2000 DIRECT GAS-FIRED HOT AIR BLOWERS FOR USE IN GREENHOUSES AND SUPPLEMENTARY NON-DOMESTIC SPACE HEATING
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CEN/TR 16478:2012 Surveillance from first commissioning on measuring devices used in natural gas supply to the installations of the activities under the Directive 2003/87/EC establishing a scheme of CO2 emissions trading
DIN EN 16723-2:2017-10 NATURAL GAS AND BIOMETHANE FOR USE IN TRANSPORT AND BIOMETHANE FOR INJECTION IN THE NATURAL GAS NETWORK - PART 2: AUTOMOTIVE FUELS SPECIFICATION
EN 12244-1:1998 DIRECT GAS-FIRED WASHING MACHINES, OF NOMINAL HEAT INPUT NOT EXCEEDING 20 KW - PART 1: SAFETY
EN 1319:2009 Domestic gas-fired forced convection air heaters for space heating, with fan-assisted burners not exceeding a net heat input of 70 kW
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PD CEN ISO/TR 24094:2007 Analysis of natural gas. Validation methods for gaseous reference materials
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BS ISO 15112 : 2011 NATURAL GAS - ENERGY DETERMINATION
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UNE-EN 12405-3:2016 Gas meters - Conversion devices - Part 3: Flow computer
UNI EN ISO 15112 : 2014 NATURAL GAS - ENERGY DETERMINATION
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UNE-EN ISO 13686:2014 Natural gas - Quality designation (ISO 13686:2013)
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I.S. EN 12244-1:1998 DIRECT GAS-FIRED WASHING MACHINES, OF NOMINAL HEAT INPUT NOT EXCEEDING 20 KW - PART 1: SAFETY
I.S. EN ISO 10723:2012 NATURAL GAS - PERFORMANCE EVALUATION FOR ANALYTICAL SYSTEMS (ISO 10723:2012)
I.S. EN 12669:2000 DIRECT GAS-FIRED HOT AIR BLOWERS FOR USE IN GREENHOUSES AND SUPPLEMENTARY NON-DOMESTIC SPACE HEATING
I.S. EN ISO 9300:2005 MEASUREMENT OF GAS FLOW BY MEANS OF CRITICAL FLOW VENTURI NOZZLES
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I.S. EN 746-2:2010 INDUSTRIAL THERMOPROCESSING EQUIPMENT - PART 2: SAFETY REQUIREMENTS FOR COMBUSTION AND FUEL HANDLING SYSTEMS
I.S. EN ISO 12213-2:2009 NATURAL GAS - CALCULATION OF COMPRESSION FACTOR - PART 2: CALCULATION USING MOLAR-COMPOSITION ANALYSIS
I.S. EN ISO 6974-5:2014 NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 5: ISOTHERMAL METHOD FOR NITROGEN, CARBON DIOXIDE, C[1] TO C[5] HYDROCARBONS AND C[6+] HYDROCARBONS (ISO 6974-5:2014)
I.S. EN ISO 12213-1:2009 NATURAL GAS - CALCULATION OF COMPRESSION FACTOR - PART 1: INTRODUCTION AND GUIDELINES
I.S. EN ISO 12213-3:2009 NATURAL GAS - CALCULATION OF COMPRESSION FACTOR - PART 3: CALCULATION USING PHYSICAL PROPERTIES
I.S. EN 1458-1:2011 DOMESTIC DIRECT GAS-FIRED TUMBLE DRYERS OF TYPES B22D AND B23D, OF NOMINAL HEAT INPUT NOT EXCEEDING 6 KW - PART 1: SAFETY
I.S. EN 12752-1:2000 GAS-FIRED TYPE B TUMBLE DRYERS OF NOMINAL HEAT INPUT NOT EXCEEDING 20 KW - PART 1: SAFETY
I.S. EN 1776:2015 GAS INFRASTRUCTURE - GAS MEASURING SYSTEMS - FUNCTIONAL REQUIREMENTS
I.S. EN 12952-8:2002 WATER-TUBE BOILERS AND AUXILIARY INSTALLATIONS - PART 8: REQUIREMENTS FOR FIRING SYSTEMS FOR LIQUID AND GASEOUS FUELS FOR THE BOILER
VDI 4608 Blatt 1:2005-03 Energy systems - Combined heat and power - Terms, definitions, examples
VDI 2077-3-1 : 2012 COR 1 2013 ENERGY CONSUMPTION ACCOUNTING FOR THE BUILDING SERVICES - DETERMINATION OF REIMBURSABLE COSTS OF HEAT GENERATION BY CHP SYSTEMS
VDI 3985:2004-03 Principles for the design, construction and acceptance of combined heat and power plants with internal combustion engines
VDI 4656:2013-09 Design and dimensioning of micro combined heat and power plants
VDI 3986:2014-07 Determination of efficiencies of conventional power stations
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OIML R 140 : 2007 MEASURING SYSTEMS FOR GASEOUS FUEL
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PD 6574:1994 Determination of emissions from appliances burning gaseous fuels during type-testing
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13/30289289 DC : 0 BS EN 12405-3 - GAS METERS - CONVERSION DEVICES - PART 3: FLOW COMPUTER
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11/30230600 DC : 0 BS ISO 10976 - REFRIGERATED LIGHT HYDROCARBON FLUIDS - MEASUREMENT OF CARGOES ON BOARD MARINE LNG CARRIERS
BS 3156-11.0.3(1997) : 1997 AMD 10655 ANALYSIS OF FUEL GASES - METHODS FOR NON-MANUFACTURED GASES - GENERAL - GUIDELINES TO TRACEABILITY IN ANALYSIS OF NATURAL GAS
07/30170559 DC : DRAFT AUG 2007 BS ISO 2314 - GAS TURBINES - ACCEPTANCE TESTS
OIML R 137-1 : 2006 GAS METERS - PART 1: REQUIREMENTS
04/30122896 DC : DRAFT SEP 2004 ISO 15112 - NATURAL GAS - ENERGY DETERMINATION
BS ISO 10976:2012 Refrigerated light hydrocarbon fluids. Measurement of cargoes on board LNG carriers
BS EN 62282-3-201:2017 Fuel cell technologies Stationary fuel cell power systems. Performance test methods for small fuel cell power systems
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PD CEN/TR 16787:2014 Industrial Gas Installation. Guideline
BS ISO 12213-3 : 1997 AMD 16148 NATURAL GAS - CALCULATION OF COMPRESSION FACTOR - CALCULATION USING MEASURED PHYSICAL PROPERTIES
14/30296487 DC : 0 BS EN 16723-1 - NATURAL GAS AND BIOMETHANE FOR USE IN TRANSPORT AND BIOMETHANE FOR INJECTION IN THE NATURAL GAS NETWORK - PART 1: SPECIFICATIONS FOR BIOMETHANE FOR INJECTION IN THE NATURAL GAS NETWORK
12/30264449 DC : DRAFT JULY 2012 BS EN ISO 6974-5 - NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - ISOTHERMAL METHOD FOR NITROGEN, CARBON DIOXIDE, C1 TO C5 HYDROCARBONS AND C6+ HYDROCARBONS
BS ISO 6570 : 2001 AMD 15368 NATURAL GAS - DETERMINATION OF POTENTIAL HYDROCARBON LIQUID CONTENT - GRAVIMETRIC METHODS
ISO/TR 24094:2006 Analysis of natural gas Validation methods for gaseous reference materials
BS ISO 12213-1 : 1997 AMD 16146 NATURAL GAS - CALCULATION OF COMPRESSION FACTOR - INTRODUCTION AND GUIDELINES
ISO 13579-1:2013 Industrial furnaces and associated processing equipment — Method of measuring energy balance and calculating efficiency — Part 1: General methodology
BS ISO 15970 : 2008 NATURAL GAS - MEASUREMENT OF PROPERTIES - VOLUMETRIC PROPERTIES: DENSITY, PRESSURE, TEMPERATURE AND COMPRESSION FACTOR
ISO/TS 29041:2008 Gas mixtures — Gravimetric preparation — Mastering correlations in composition
I.S. EN 12405-3:2015 GAS METERS - CONVERSION DEVICES - PART 3: FLOW COMPUTER
I.S. EN 16723-1:2016 NATURAL GAS AND BIOMETHANE FOR USE IN TRANSPORT AND BIOMETHANE FOR INJECTION IN THE NATURAL GAS NETWORK - PART 1: SPECIFICATIONS FOR BIOMETHANE FOR INJECTION IN THE NATURAL GAS NETWORK
API MPM CH22.6 : 2015 MANUAL OF PETROLEUM MEASUREMENT STANDARDS - CHAPTER 22.6: TESTING PROTOCOL FOR GAS CHROMATOGRAPHS
I.S. EN 62282-4-102:2017 FUEL CELL TECHNOLOGIES - PART 4-102: FUEL CELL POWER SYSTEMS FOR INDUSTRIAL ELECTRIC TRUCKS - PERFORMANCE TEST METHODS
ONORM EN ISO 15112 : 2014 NATURAL GAS - ENERGY DETERMINATION (ISO 15112:2011)
UNI EN ISO 15971 : 2014 NATURAL GAS - MEASUREMENT OF PROPERTIES - CALORIFIC VALUE AND WOBBE INDEX
ISO 16110-2:2010 Hydrogen generators using fuel processing technologies Part 2: Test methods for performance
I.S. EN ISO 6974-3:2002 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 C[8] USING TWO PACKED COLUMNS
IEC 62282-3-201:2017 Fuel cell technologies - Part 3-201: Stationary fuel cell power systems - Performance test methods for small fuel cell power systems
DIN EN 746-2:2011-02 Industrial thermoprocessing equipment - Part 2: Safety requirements for combustion and fuel handling systems
DIN EN ISO 6570:2004-12 Natural gas - Determination of potential hydrocarbon liquid content - Gravimetric methods (ISO 6570:2001); German version EN ISO 6570:2004
DIN EN 676:2012-03 (Draft) AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
IEC 62282-3-200:2015 Fuel cell technologies - Part 3-200: Stationary fuel cell power systems - Performance test methods
BS EN 12752-1:1999 Gas-fired type B tumble dryers of nominal heat input not exceeding 20 kW Safety
BS EN ISO 6974-5:2014 Natural gas. Determination of composition and associated uncertainty by gas chromatography Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons
BS EN 525:2009 Non-domestic direct gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW
BS EN 1020:2009 Non-domestic forced convection gas-fired air heaters for space heating not exceeding a net heat input of 300 kW incorporating a fan to assist transportation of combustion air or combustion products
DIN EN 676:2008-11 Automatic forced draught burners for gaseous fuels (includes Amendment A2:2008)
I.S. EN 777-4:2009 MULTI-BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATER SYSTEMS FOR NON-DOMESTIC USE - PART 4: SYSTEM H - SAFETY
I.S. EN 525:2009 NON-DOMESTIC DIRECT GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW
I.S. EN 777-2:2009 MULTI-BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATER SYSTEMS FOR NON-DOMESTIC USE - PART 2: SYSTEM E - SAFETY
I.S. EN 416-1:2009 SINGLE BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATERS FOR NON-DOMESTIC USE - PART 1: SAFETY
I.S. EN 777-3:2009 MULTI-BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATER SYSTEMS FOR NON DOMESTIC USE - PART 3: SYSTEM F - SAFETY
I.S. EN 1319:2009 DOMESTIC GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING, WITH FAN-ASSISTED BURNERS NOT EXCEEDING A NET HEAT INPUT OF 70 KW
EN ISO 6974-3:2001 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 6974-3:2000)
I.S. EN 419-1:2009 NON-DOMESTIC GAS-FIRED OVERHEAD LUMINOUS RADIANT HEATERS - PART 1: SAFETY
I.S. EN 621:2009 NON-DOMESTIC GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW, WITHOUT A FAN TO ASSIST TRANSPORTATION OF COMBUSTION AIR AND/OR COMBUSTION PRODUCTS
EN ISO 15112:2014 NATURAL GAS - ENERGY DETERMINATION (ISO 15112:2011)
I.S. EN 778:2009 DOMESTIC GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 70 KW, WITHOUT A FAN TO ASSIST TRANSPORTATION OF COMBUSTION AIR AND/OR COMBUSTION PRODUCTS
I.S. EN 777-1:2009 MULTI-BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATER SYSTEMS FOR NON-DOMESTIC USE - PART 1: SYSTEM D - SAFETY
I.S. EN 1020:2009 NON-DOMESTIC FORCED CONVECTION GAS-FIRED AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW INCORPORATING A FAN TO ASSIST TRANSPORTATION OF COMBUSTION AIR OR COMBUSTION PRODUCTS
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 12213-3:2009 Natural gas - Calculation of compression factor - Part 3: Calculation using physical properties (ISO 12213-3:2006)
UNI EN 416-1 : 2009 SINGLE BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATERS FOR NON-DOMESTIC USE - PART 1: SAFETY
UNI EN 1458-1 : 2012 DOMESTIC DIRECT GAS-FIRED TUMBLE DRYERS OF TYPES B22D AND B23D, OF NOMINAL HEAT INPUT NOT EXCEEDING 6 KW - PART 1: SAFETY
UNI EN ISO 12213-1 : 2010 NATURAL GAS - CALCULATION OF COMPRESSION FACTOR - PART 1: INTRODUCTION AND GUIDELINES
UNI EN 778 : 2009 DOMESTIC GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 70 KW, WITHOUT A FAN TO ASSIST TRANSPORTATION OF COMBUSTION AIR AND/OR COMBUSTION PRODUCTS
UNI EN 777-4 : 2009 MULTI-BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATER SYSTEMS FOR NON-DOMESTIC USE - PART 4: SYSTEM H - SAFETY
UNI EN ISO 12213-3 : 2010 NATURAL GAS - CALCULATION OF COMPRESSION FACTOR - PART 3: CALCULATION USING PHYSICAL PROPERTIES
UNI EN 1020 : 2009 NON-DOMESTIC FORCED CONVECTION GAS- FIRED AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW INCORPORATING A FAN TO ASSIST TRANSPORTATION OF COMBUSTION AIR OR COMBUSTION PRODUCTS
UNI EN ISO 13686 : 2013 NATURAL GAS - QUALITY DESIGNATION
UNI EN ISO 12213-2 : 2010 NATURAL GAS - CALCULATION OF COMPRESSION FACTOR - PART 2: CALCULATION USING MOLAR-COMPOSITION ANALYSIS
UNI EN 1319 : 2010 DOMESTIC GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING, WITH FAN- ASSISTED BURNERS NOT EXCEEDING A NET HEAT INPUT OF 70 KW
EN 12953-7:2002 Shell boilers - Part 7 : Requirements for firing systems for liquid and gaseous fuels for the boilers
UNI EN 746-2 : 2011 INDUSTRIAL THERMOPROCESSING EQUIPMENT - PART 2: SAFETY REQUIREMENTS FOR COMBUSTION AND FUEL HANDLING SYSTEMS
UNI EN 621 : 2010 NON-DOMESTIC GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW, WITHOUT A FAN TO ASSIST TRANSPORTATION OF COMBUSTION AIR AND/OR COMBUSTION PRODUCTS
UNI EN 525 : 2009 NON-DOMESTIC DIRECT GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW
UNI EN 777-1 : 2009 MULTI-BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATER SYSTEMS FOR NON-DOMESTIC USE - PART 1: SYSTEM D - SAFETY
UNI EN 676 : 2008 AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
UNI EN ISO 10723 : 2013 NATURAL GAS - PERFORMANCE EVALUATION FOR ANALYTICAL SYSTEMS
UNI EN 777-2 : 2009 MULTI-BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATER SYSTEMS FOR NON-DOMESTIC USE - PART 2: SYSTEM E - SAFETY
UNI EN 419-1 : 2009 NON DOMESTIC GAS-FIRED OVERHEAD LUMINOUS RADIANT HEATERS - PART 1: SAFETY
UNI EN 777-3 : 2009 MULTI-BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATER SYSTEMS FOR NON-DOMESTIC USE - PART 3: SYSTEM F - SAFETY
DIN EN 16726 E : 2016 GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H
04/30055562 DC : DRAFT APR 2004 ISO 20765-1 - NATURAL GAS - CALCULATION OF THERMODYNAMIC PROPERTIES - PART 1: GAS PHASE PROPERTIES FOR TRANSITION AND DISTRIBUTION APPLICATIONS
ISO 20765-1:2005 Natural gas Calculation of thermodynamic properties Part 1: Gas phase properties for transmission and distribution applications
BS EN ISO 15970:2014 Natural gas. Measurement of properties. Volumetric properties: density, pressure, temperature and compression factor
ISO 18888:2017 Gas turbine combined cycle power plants — Thermal performance tests
ISO 16346:2013 Energy performance of buildings Assessment of overall energy performance
BS EN 12405-3:2015 Gas meters. Conversion devices Flow computer
BS ISO 20765-1 : 2005 NATURAL GAS - CALCULATION OF THERMODYNAMIC PROPERTIES - PART 1: GAS PHASE PROPERTIES FOR TRANSMISSION AND DISTRIBUTION APPLICATIONS
UNE-EN 16723-1:2017 Natural gas and biomethane for use in transport and biomethane for injection in the natural gas network - Part 1: Specifications for biomethane for injection in the natural gas network
BS ISO 6974-6 : 2002 NATURAL GAS - DETERMINATION OF COMPOSITION WITH DEFINED UNCERTAINTY BY GAS CHROMATOGRAPHY - DETERMINATION OF HYDROGEN, HELIUM, OXYGEN, NITROGEN, CARBON DIOXIDE AND C[1] TO C[8] HYDROCARBONS USING THREE CAPILLARY COLUMNS
DIN 1871:1999-05 Gaseous fuels and other gases - Density and other volumetric quantities
DIN EN 16723-2 E : 2017 NATURAL GAS AND BIOMETHANE FOR USE IN TRANSPORT AND BIOMETHANE FOR INJECTION IN THE NATURAL GAS NETWORK - PART 2: AUTOMOTIVE FUELS SPECIFICATION
PREN 419 : DRAFT 2017 GAS-FIRED OVERHEAD LUMINOUS RADIANT HEATERS FOR NONDOMESTIC USE - SAFETY AND ENERGY EFFICIENCY
16/30312330 DC : 0 BS EN 62282-4-102 ED1.0 - FUEL CELL TECHNOLOGIES - PART 4-102: FUEL CELL POWER SYSTEMS FOR INDUSTRIAL ELECTRIC TRUCKS - PERFORMANCE TEST METHODS
BS EN 16723-1:2016 Natural gas and biomethane for use in transport and biomethane for injection in the natural gas network Specifications for biomethane for injection in the natural gas network
BS ISO 2314:2009 Gas turbines. Acceptance tests
UNE-EN ISO 15970:2014 Natural gas - Measurement of properties - Volumetric properties: density, pressure, temperature and compression factor (ISO 15970:2008)
BS 3156-11.5(1996) : 96 AMD 14164 ANALYSIS OF FUEL GASES - METHODS FOR NON-MANUFACTURED GASES - PERFORMANCE EVALUATION FOR ON-LINE ANALYTICAL SYSTEMS
BS ISO 20765-2 : 2015 NATURAL GAS - CALCULATION OF THERMODYNAMIC PROPERTIES - PART 2: SINGLE-PHASE PROPERTIES (GAS, LIQUID, AND DENSE FLUID) FOR EXTENDED RANGES OF APPLICATION
BS EN ISO 14912:2006 Gas analysis. Conversion of gas mixture composition data
UNE-EN ISO 15112:2014 Natural gas - Energy determination (ISO 15112:2011)
PREN 676 : DRAFT 2012 FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
BS ISO 3977-4:2002 Gas turbines. Procurement Fuels and environment
DIN EN 12405-3 E : 2016 GAS METERS - CONVERSION DEVICES - PART 3: FLOW COMPUTER
07/30163045 DC : DRAFT AUG 2007 BS EN 525 - NON-DOMESTIC DIRECT GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW
BS EN 62282-3-2:2006 Fuel cell technologies Stationary fuel cell power systems. Performance test methods
DIN EN ISO 15971:2014-09 Natural gas - Measurement of properties - Calorific value and Wobbe index (ISO 15971:2008)
ISO 2314:2009 Gas turbines — Acceptance tests
S.R. CR 1404:1994 DETERMINATION OF EMISSIONS FROM APPLIANCES BURNING GASEOUS FUELS DURING TYPE-TESTING
17/30363959 DC : 0 BS EN 17175 - GAS-FIRED OVERHEAD RADIANT STRIP HEATERS AND MULTI-BURNER CONTINUOUS RADIANT TUBE HEATER SYSTEMS FOR NON-DOMESTIC USE - SAFETY AND ENERGY EFFICIENCY
DIN EN 16726:2016-04 GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H
EN 437:2003+A1:2009 Test gases - Test pressures - Appliance categories
DIN EN 525:2009-11 NON-DOMESTIC DIRECT GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW
DIN EN 778:2010-03 DOMESTIC GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 70 KW, WITHOUT A FAN TO ASSIST TRANSPORTATION OF COMBUSTION AIR AND/OR COMBUSTION PRODUCTS
DIN EN ISO 13686:2013-12 NATURAL GAS - QUALITY DESIGNATION (ISO 13686:2013)
DIN EN ISO 6974-4 E : 2002 NATURAL GAS - DETERMINATION OF COMPOSITION WITH DEFINED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 4: DETERMINATION OF NITROGEN, CARBON DIOXIDE AND C[1] TO C[5] AND C[6+] HYDROCARBONS FOR A LABORATORY AND ON-LINE MEASURING SYSTEM USING TWO COLUMNS
ISO 9300:2005 Measurement of gas flow by means of critical flow Venturi nozzles
BS EN 621:2009 Non-domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW, without a fan to assist transportation of combustion air and/or combustion products
BS EN 12669:2000 Direct gas-fired hot air blowers for use in greenhouses and supplementary non-domestic space heating
BS EN 12953-7:2002 Shell boilers Requirements for firing systems for liquid and gaseous fuels for the boilers
BS EN 12838:2000 Installations and equipment for liquefied natural gas. Suitability testing of LNG sampling systems
ISO 14111:1997 Natural gas — Guidelines to traceability in analysis
BS EN ISO 6974-4:2001 Natural gas. Determination of composition with defined uncertainty by gas chromatography Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns
BS EN 777-2:2009 Multi-burner gas-fired overhead radiant tube heater systems for non-domestic use System E. Safety
ISO 12213-1:2006 Natural gas Calculation of compression factor Part 1: Introduction and guidelines
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
UNE-EN 1776:2017 Gas infrastructure - Gas measuring systems - Functional requirements
BS EN 1776:2015 Gas infrastructure. Gas measuring systems. Functional requirements
ISO 6570:2001 Natural gas Determination of potential hydrocarbon liquid content Gravimetric methods
BS EN 777-4:2009 Multi-burner gas-fired overhead radiant tube heater systems for non-domestic use System H. Safety
BS EN 777-1:2009 Multi-burner gas-fired overhead radiant tube heater systems for non-domestic use System D. Safety
UNE-EN ISO 10723:2013 Natural gas - Performance evaluation for analytical systems (ISO 10723:2012)
BS EN ISO 13443:2005 Natural gas. Standard reference conditions
ISO 12213-3:2006 Natural gas Calculation of compression factor Part 3: Calculation using physical properties
ISO 12213-2:2006 Natural gas Calculation of compression factor Part 2: Calculation using molar-composition analysis
ISO 10723:2012 Natural gas Performance evaluation for analytical systems
DIN EN ISO 9300:2005-11 Measurement of gas flow by means of critical flow Venturi nozzles (ISO 9300:2005)
UNE-EN 1020:2010 Non-domestic forced convection gas-fired air heaters for space heating not exceeding a net heat input of 300 kW incorporating a fan to assist transportation of combustion air or combustion products
ISO 14912:2003 Gas analysis — Conversion of gas mixture composition data
BS ISO 19859:2016 Gas turbine applications. Requirements for power generation
ISO 15403-1:2006 Natural gas Natural gas for use as a compressed fuel for vehicles Part 1: Designation of the quality
ISO 13443:1996 Natural gas Standard reference conditions
UNE-EN ISO 12213-1:2010 Natural gas - Calculation of compression factor - Part 1: Introduction and guidelines (ISO 12213-1:2006)
UNE-EN 30-1-1:2009 Domestic cooking appliances burning gas - Part 1-1: Safety - General
BS EN 676 : 2003 AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
UNE-EN ISO 12213-2:2010 Natural gas - Calculation of compression factor - Part 2: Calculation using molar-composition analysis (ISO 12213-2:2006)
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
DIN EN 12952-15:2004-01 Water tube boilers and auxiliary installations - Part 15: Acceptance tests; German version EN 12952-15:2003
DIN EN ISO 6974-5:2014-10 NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 5: ISOTHERMAL METHOD FOR NITROGEN, CARBON DIOXIDE, C[1] TO C[5] HYDROCARBONS AND C[6+] HYDROCARBONS (ISO 6974-5:2014)
UNE-EN ISO 12213-3:2010 Natural gas - Calculation of compression factor - Part 3: Calculation using physical properties (ISO 12213-3:2006)
BS EN ISO 10723:2012 Natural gas. Performance evaluation for analytical systems
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
UNE-EN 778:2010 Domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 70 kW, without a fan to assist transportation of combustion air and/or combustion products
BS EN 12952-8:2002 Water-tube boilers and auxiliary installations Requirements for firing systems for liquid and gaseous fuels for the boiler
BS ISO 13577-2:2014 Industrial furnaces and associated processing equipment. Safety Combustion and fuel handling systems
ISO 15970:2008 Natural gas Measurement of properties Volumetric properties: density, pressure, temperature and compression factor
EN ISO 13686:2013 Natural gas - Quality designation (ISO 13686:2013)
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)
EN 1458-1:2011 Domestic direct gas-fired tumble dryers of types B22D and B23D, of nominal heat input not exceeding 6 kW - Part 1: Safety
EN ISO 18453:2005 Natural gas - Correlation between water content and water dew point (ISO 18453:2004)
EN ISO 15970:2014 Natural gas - Measurement of properties - Volumetric properties: density, pressure, temperature and compression factor (ISO 15970:2008)
EN ISO 13443:2005 Natural gas - Standard reference conditions (ISO 13443:1996 including Corrigendum 1:1997)
EN 621:2009 Non-domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW, without a fan to assist transportation of combustion air and/or combustion products
EN 16723-2:2017 Natural gas and biomethane for use in transport and biomethane for injection in the natural gas network - Part 2: Automotive fuels specification
EN 777-2:2009 Multi-burner gas-fired overhead radiant tube heater systems for non-domestic use - Part 2: System E - Safety
EN 525:2009 Non-domestic direct gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW
EN ISO 15971 : 2014 NATURAL GAS - MEASUREMENT OF PROPERTIES - CALORIFIC VALUE AND WOBBE INDEX (ISO 15971:2008)
EN ISO 14111:1999 Natural gas - Guidelines to traceability in analysis (ISO 14111:1997)
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)
EN ISO 10723:2012 Natural gas - Performance evaluation for analytical systems (ISO 10723:2012)
EN ISO 12213-1:2009 Natural gas - Calculation of compression factor - Part 1: Introduction and guidelines (ISO 12213-1:2006)
EN 746-2:2010 Industrial thermoprocessing equipment - Part 2: Safety requirements for combustion and fuel handling systems
EN 1776:2015 Gas infrastructure - Gas measuring systems - Functional requirements
EN ISO 15403:2005 Natural gas - Designation of the quality of natural gas for use as a compressed fuel for vehicles (ISO 15403:2000)
EN 778:2009 Domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 70 kW, without a fan to assist transportation of combustion air and/or combustion products
EN 416-1:2009 Single burner gas-fired overhead radiant tube heaters for non-domestic use - Part 1: Safety
EN 16726:2015 Gas infrastructure - Quality of gas - Group H
EN 419-1:2009 Non-domestic gas-fired overhead luminous radiant heaters - Part 1: Safety
EN ISO 9300:2005 (edition 2) Measurement of gas flow by means of critical flow Venturi nozzles (ISO 9300:2005)
EN 777-1:2009 Multi-burner gas-fired overhead radiant tube heater systems for non-domestic use - Part 1: System D - Safety
EN 777-3:2009 Multi-burner gas-fired overhead radiant tube heater systems for non domestic use - Part 3: System F - Safety
EN 16723-1:2016 Natural gas and biomethane for use in transport and biomethane for injection in the natural gas network - Part 1: Specifications for biomethane for injection in the natural gas network
EN ISO 14912:2006/AC:2007 GAS ANALYSIS - CONVERSION OF GAS MIXTURE COMPOSITION DATA (ISO 14912:2003/Cor 1:2006)
EN 777-4:2009 Multi-burner gas-fired overhead radiant tube heater systems for non-domestic use - Part 4: System H - Safety
EN ISO 15403-1:2008 Natural gas - Natural gas for use as a compressed fuel for vehicles - Part 1: Designation of the quality (ISO 15403-1:2006)
EN ISO 12213-2:2009 Natural gas - Calculation of compression factor - Part 2: Calculation using molar-composition analysis (ISO 12213-2:2006)
EN ISO 6570:2004 Natural gas - Determination of potential hydrocarbon liquid content - Gravimetric methods (ISO 6570:2001)
DIN EN 12405-3:2016-04 Gas meters - Conversion devices - Part 3: Flow computer
CEN ISO/TR 24094:2007 Analysis of natural gas - Validation methods for gaseous reference materials (ISO/TR 24094:2006)
12/30272264 DC : 0 BS ISO 20765-2 - NATURAL GAS - CALCULATION OF THERMODYNAMIC PROPERTIES - PART 2: SINGLE-PHASE PROPERTIES (GAS, LIQUID, AND DENSE FLUID) FOR EXTENDED RANGES OF APPLICATION
BS ISO 16346:2013 Energy performance of buildings. Assessment of overall energy performance
12/30202498 DC : 0 BS EN 62282-3-201 - FUEL CELL TECHNOLOGIES - PART 3-201: STATIONARY FUEL CELL POWER SYSTEMS - PERFORMANCE TEST METHODS FOR SMALL FUEL CELL POWER SYSTEMS
BS EN 62282-4-102:2017 Fuel cell technologies Fuel cell power systems for industrial electric trucks. Performance test methods
17/30327536 DC : 0 BS ISO 6578 - REFRIGERATED HYDROCARBON LIQUIDS - STATIC MEASUREMENT - CALCULATION PROCEDURE
11/30213827 DC : 0 BS EN ISO 10723 - NATURAL GAS - PERFORMANCE EVALUATION FOR ON-LINE ANALYTICAL SYSTEMS
BS EN 16726 : 2015 GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H
UNE-EN 62282-3-201:2013 Fuel cell technologies - Part 3-201: Stationary fuel cell power systems - Performance test methods for small fuel cell power systems
DIN EN 12405-2:2012-10 GAS METERS - CONVERSION DEVICES - PART 2: ENERGY CONVERSION
BS 7420:1991 Guide for determination of calorific values of solid, liquid and gaseous fuels (including definitions)
07/30163039 DC : DRAFT AUG 2007 BS EN 1020 - NON-DOMESTIC FORCED CONVECTION GAS-FIRED AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW INCORPORATING A FAN TO ASSIST TRANSPORTATION OF COMBUSTION AIR OR COMBUSTION PRODUCTS
BS ISO 18888:2017 Gas turbine combined cycle power plants. Thermal performance tests
I.S. EN 437:2003 TEST GASES - TEST PRESSURES - APPLIANCE CATEGORIES
UNE-EN 12405-2:2013 Gas meters - Conversion devices - Part 2: Energy conversion
BS ISO 12213-2 : 1997 AMD 16147 NATURAL GAS - CALCULATION OF COMPRESSION FACTOR - CALCULATION USING A MOLAR COMPOSITION ANALYSIS
I.S. EN ISO 15971:2014 NATURAL GAS - MEASUREMENT OF PROPERTIES - CALORIFIC VALUE AND WOBBE INDEX (ISO 15971:2008)
06/30139641 DC : 0 EN 777-3 - MULTI-BURNER GAS-FORED OVERHEAD RADIANT TUBE HEATER SYSTEMS FOR NON DOMESTIC USE - PART 3: SYSTEM F - SAFETY
UNE-EN 16726:2016 Gas infrastructure - Quality of gas - Group H
BS ISO 6974-2 : 2001 AMD 13855 NATURAL GAS - DETERMINATION OF COMPOSITION WITH DEFINED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 2: MEASURING-SYSTEM CHARACTERISTICS AND STATISTICS FOR PROCESSING OF DATA
DIN EN ISO 18453:2006-01 Natural gas - Correlation between water content and water dew point (ISO 18453:2004)
NF EN 62282 3-2 : 2006 FUEL CELL TECHNOLOGIES - PART 3-2: STATIONARY FUEL CELL POWER PLANTS - PERFORMANCE TEST METHODS
ISO 10976:2015 Refrigerated light hydrocarbon fluids — Measurement of cargoes on board LNG carriers
UNI EN ISO 15970 : 2014 NATURAL GAS - MEASUREMENT OF PROPERTIES - VOLUMETRIC PROPERTIES: DENSITY, PRESSURE, TEMPERATURE AND COMPRESSION FACTOR
I.S. EN 12405-2:2012 GAS METERS - CONVERSION DEVICES - PART 2: ENERGY CONVERSION
S.R. CEN ISO/TR 24094:2007 ANALYSIS OF NATURAL GAS - VALIDATION METHODS FOR GASEOUS REFERENCE MATERIALS
I.S. EN ISO 15403:2005 NATURAL GAS - DESIGNATION OF THE QUALITY OF NATURAL GAS FOR USE AS A COMPRESSED FUEL FOR VEHICLES
UNE-EN ISO 15971:2014 Natural gas - Measurement of properties - Calorific value and Wobbe index (ISO 15971:2008)
ISO 19970:2017 Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels — Metering of gas as fuel on LNG carriers during cargo transfer operations
ISO/TR 29922:2017 Natural gas Supporting information on the calculation of physical properties according to ISO 6976
17/30349928 DC : 0 BS EN 437 - TEST GASES - TEST PRESSURES - APPLIANCE CATEGORIES
ISO 13577-2:2014 Industrial furnaces and associated processing equipment — Safety — Part 2: Combustion and fuel handling systems
I.S. 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 C[1] TO C[8] HYDROCARBONS USING THREE CAPILLARY COLUMNS
I.S. EN ISO 18453:2005 NATURAL GAS - CORRELATION BETWEEN WATER CONTENT AND WATER DEW POINT
ISO 20765-2:2015 Natural gas Calculation of thermodynamic properties Part 2: Single-phase properties (gas, liquid, and dense fluid) for extended ranges of application
IEC 62282-4-102:2017 Fuel cell technologies - Part 4-102: Fuel cell power systems for industrial electric trucks - Performance test methods
DIN EN 777-2:2009-09 MULTI-BURNER GAS-FIRED OVERHEAD RADIANT TUBE HEATER SYSTEMS FOR NON-DOMESTIC USE - PART 2: SYSTEM E - SAFETY
DIN EN 419-1:2009-07 NON-DOMESTIC GAS-FIRED OVERHEAD LUMINOUS RADIANT HEATERS - PART 1: SAFETY
DIN EN ISO 12213-1:2010-01 Natural gas - Calculation of compression factor - Part 1: Introduction and guidelines (ISO 12213-1:2006)
DIN EN ISO 6974-5 E : 2002 NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 5: ISOTHERMAL METHOD FOR NITROGEN, CARBON DIOXIDE, C[1] TO C[5] HYDROCARBONS AND C[6+] HYDROCARBONS (ISO 6974-5:2014)
DIN EN ISO 12213-2:2010-01 Natural gas - Calculation of compression factor - Part 2: Calculation using molar-composition analysis (ISO 12213-2:2006)
DIN EN 30-1-1:2013-06 Domestic cooking appliances burning gas - Part 1-1: Safety - General (includes Amendment 1:2013)
IEC 62282-3-2:2006 Fuel cell technologies - Part 3-2: Stationary fuel cell power systems - Performance test methods
BS EN ISO 9300:2005 Measurement of gas flow by means of critical flow Venturi nozzles
ISO 13686:2013 Natural gas Quality designation
BS EN 12953-11:2003 Shell boilers Acceptance tests
BS EN 777-3:2009 Multi-burner gas-fired overhead radiant tube heater systems for non-domestic use System F. Safety
BS EN 30-1-1 : 2008 DOMESTIC COOKING APPLIANCES BURNING GAS - PART 1-1: SAFETY - GENERAL
BS EN 1319:2009 Domestic gas-fired forced convection air heaters for space heating, with fan-assisted burners not exceeding a net heat input of 70 kW
BS EN ISO 12213-2:2009 Natural gas. Calculation of compression factor Calculation using molar-composition analysis
CR 1404:1994 Determination of emissions from appliances burning gaseous fuels during type-testing
EN 62282-3-2:2006 Fuel cell technologies - Part 3-2: Stationary fuel cell power systems - Performance test methods
EN 12952-8:2002 Water-tube boilers and auxiliary installations - Part 8: Requirements for firing systems for liquid and gaseous fuels for the boiler
DIN EN ISO 13443:2007-09 NATURAL GAS STANDARD REFERENCE CONDITIONS
DIN EN ISO 6974-6:2005-08 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C<(Index)1> to C<(Index)8> hydrocarbons using three capillary columns (ISO 6974-6:2002)
EN 12952-15:2003 Water-tube boilers and auxiliary installations - Part 15: Acceptance tests
EN 1020:2009 Non-domestic forced convection gas-fired air heaters for space heating not exceeding a net heat input of 300 kW incorporating a fan to assist transportation of combustion air or combustion products
DIN EN 621:2010-04 NON-DOMESTIC GAS-FIRED FORCED CONVECTION AIR HEATERS FOR SPACE HEATING NOT EXCEEDING A NET HEAT INPUT OF 300 KW, WITHOUT A FAN TO ASSIST TRANSPORTATION OF COMBUSTION AIR AND/OR COMBUSTION PRODUCTS
EN 62282-3-201:2017 Fuel cell technologies - Part 3-201: Stationary fuel cell power systems - Performance test methods for small fuel cell power systems
EN 12838:2000 Installations and equipment for liquefied natural gas - Suitability testing of LNG sampling systems
DIN EN 1458-1:2012-02 DOMESTIC DIRECT GAS-FIRED TUBLE DRYERS OF TYPES B22D AND B23D, OF NOMINAL HEAT INPUT NOT EXCEEDING 6 KW - PART 1: SAFETY
EN 12405-3 : 2015 GAS METERS - CONVERSION DEVICES - PART 3: FLOW COMPUTER
DIN EN ISO 6974-5:2002-06 NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 5: ISOTHERMAL METHOD FOR NITROGEN, CARBON DIOXIDE, C[1] TO C[5] HYDROCARBONS AND C[6+] HYDROCARBONS (ISO 6974-5:2014)
DIN EN 437:2009-09 TEST GASES - TEST PRESSURES - APPLIANCES CATEGORIES
UNI EN 30-1-1 : 2013 DOMESTIC COOKING APPLIANCES BURNING GAS - PART 1-1: SAFETY - GENERAL

AS 4621:2019 Regulator for use with liquefied petroleum - Vapour phase
ISO 6974-2:2012 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 2: Uncertainty calculations
ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
ISO 14912:2003 Gas analysis — Conversion of gas mixture composition data
ISO 80000-1:2009 Quantities and units — Part 1: General
ISO 6974-1:2012 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 1: General guidelines and calculation of composition
AS/NZS 5263.1.6:2020 Gas appliances Indirect gas-fired ducted air heaters
ISO 20765-2:2015 Natural gas Calculation of thermodynamic properties Part 2: Single-phase properties (gas, liquid, and dense fluid) for extended ranges of application
ISO/TR 29922:2017 Natural gas Supporting information on the calculation of physical properties according to ISO 6976
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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