This document describes a laser Raman spectroscopy method for the quantitative determination of chemical composition of natural gas in upstream area.

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    • Standard
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      English language
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      17 pages
      English language

This document provides the means for energy determination of natural gas by measurement or
by calculation, and describes the related techniques and measures that are necessary to take. The
calculation of thermal energy is based on the separate measurement of the quantity, either by mass
or by volume, of gas transferred and its measured or calculated calorific value. The general means of
calculating uncertainties are also given.
Only systems currently in use are described.
NOTE Use of such ...
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    • Standard
      80 pages
      English language
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This document describes the precision that can be expected from the gas chromatographic method
that is set up in accordance with ISO 6974-1. The stated precision provides values for the magnitude
of variability that can be expected between test results when the method described in ISO 6974-1 is
applied in one or more competent laboratories. This document also gives guidance on the assessment
of bias.

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    • Standard
      18 pages
      English language
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This document provides the means for energy determination of natural gas by measurement or by calculation, and describes the related techniques and measures that are necessary to take. The calculation of thermal energy is based on the separate measurement of the quantity, either by mass or by volume, of gas transferred and its measured or calculated calorific value. The general means of calculating uncertainties are also given.
Only systems currently in use are described.
NOTE Use of such syst...
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    • Standard
      80 pages
      English language
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This document describes the precision that can be expected from the gas chromatographic method that is set up in accordance with ISO 6974-1. The stated precision provides values for the magnitude of variability that can be expected between test results when the method described in ISO 6974-1 is applied in one or more competent laboratories. This document also gives guidance on the assessment of bias.

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    • Standard
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This part of ISO 20765 specifies a method of calculation for the volumetric and caloric properties of natural gases, natural gases containing synthetic admixture and similar mixtures, at conditions where the mixture can exist only as a gas.
The method is applicable to pipeline-quality gases within the ranges of pressure and temperature at which transmission and distribution operations normally take place. For volumetric properties (compression factor and density), the uncertainty of calculation...
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      50 pages
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ISO 23874:2006 describes the performance requirements for analysis of treated natural gas of transmission or pipeline quality in sufficient detail so that the hydrocarbon dewpoint temperature can be calculated using an appropriate equation of state. ISO 23874:2006 can be applied to gases that have maximum dewpoint temperatures (cricondentherms) between 0 °C and - 50 °C. The pressures at which these maximum dewpoint temperatures are calculated are in the range 2 MPa (20 bar) to 5 MPa (50 bar).
T...
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    • Standard
      33 pages
      English language
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This document provides the means for energy determination of natural gas by measurement or by calculation, and describes the related techniques and measures that are necessary to take. The calculation of thermal energy is based on the separate measurement of the quantity, either by mass or by volume, of gas transferred and its measured or calculated calorific value. The general means of calculating uncertainties are also given. Only systems currently in use are described. NOTE Use of such system...view more

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    • Standard
      75 pages
      French language
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    • Standard
      71 pages
      English language

This document explains an approach for assessment of limit values for contaminants that may be found
in biomethane. Limit values are generally required as an adjunct to a biomethane specification (such as
parts 1 and 2 of EN 16723, or an equivalent National specification) or as part of a Network Entry
Agreement for injection of biomethane into gas networks.
The methodology employed will permit derivation of limit values based solely on consideration of
potential for impact on human health a...
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    • Technical report
      27 pages
      English language
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    • Technical report
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ISO 20765-2:2015 specifies a method to calculate volumetric and caloric properties of natural gases, manufactured fuel gases, and similar mixtures, at conditions where the mixture may be in either the homogeneous (single-phase) gas state, the homogeneous liquid state, or the homogeneous supercritical (dense-fluid) state.

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    • Standard
      68 pages
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This European standard specifies 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.
NOTE   For information on gas families and gas groups see EN 437.
This European standard does not cover gases conveyed on isolated networks.
For biomethane, additional requirements indicated in prEN 16723 1 apply.

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    • Standard
      48 pages
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This document specifies a method for the determination of hydrogen sulfide content in working field natural gas of upstream area by laser absorption spectroscopy. The analytical range expressed as mole fraction is 10 × 10−6 to 20 %. The analytical range can be expanded to higher content with specific instrument requirements.

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    • Standard
      16 pages
      French language
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    • Standard
      16 pages
      English language

This document describes the precision that can be expected from the gas chromatographic method that is set up in accordance with ISO 6974-1. The stated precision provides values for the magnitude of variability that can be expected between test results when the method described in ISO 6974-1 is applied in one or more competent laboratories. This document also gives guidance on the assessment of bias.

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    • Standard
      11 pages
      French language
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    • Standard
      11 pages
      English language

This part of ISO 20765 specifies a method of calculation for the volumetric and caloric properties of natural gases, natural gases containing synthetic admixture and similar mixtures, at conditions where the mixture can exist only as a gas.
The method is applicable to pipeline-quality gases within the ranges of pressure and temperature at which transmission and distribution operations normally take place. For volumetric properties (compression factor and density), the uncertainty of calculation...
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    • Draft
      47 pages
      English language
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    • Standard
      50 pages
      English language
    • e-Library read for
      1 day

ISO 23874:2006 describes the performance requirements for analysis of treated natural gas of transmission or pipeline quality in sufficient detail so that the hydrocarbon dewpoint temperature can be calculated using an appropriate equation of state. ISO 23874:2006 can be applied to gases that have maximum dewpoint temperatures (cricondentherms) between 0 °C and - 50 °C. The pressures at which these maximum dewpoint temperatures are calculated are in the range 2 MPa (20 bar) to 5 MPa (50 bar).
T...
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    • Draft
      30 pages
      English language
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    • Standard
      33 pages
      English language
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ISO 20765-2:2015 specifies a method to calculate volumetric and caloric properties of natural gases, manufactured fuel gases, and similar mixtures, at conditions where the mixture may be in either the homogeneous (single-phase) gas state, the homogeneous liquid state, or the homogeneous supercritical (dense-fluid) state.

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    • Draft
      65 pages
      English language
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    • Standard
      68 pages
      English language
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      1 day

This European standard specifies 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.
NOTE   For information on gas families and gas groups see EN 437.
This European standard does not cover gases conveyed on isolated networks.
For biomethane, additional requirements indicated in prEN 16723 1 apply.

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    • Standard
      48 pages
      English language
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ISO 20729:2017 applies to the determination of total sulfur content in natural gas expressed as sulfur mass concentration ranging from 1 mg/m3 to 200 mg/m3. Natural gas with sulfur contents above 200 mg/m3 can be analysed after dilution with a suitable sulfur-free solvent.

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    • Standard
      10 pages
      French language
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    • Standard
      10 pages
      English language

ISO 14469:2017 specifies CNG refuelling nozzles and receptacles constructed entirely of new and unused parts and materials, for road vehicles powered by compressed natural gas. A CNG refuelling connector consists of, as applicable, the receptacle and its protective cap (mounted on the vehicle) and the nozzle.
ISO 14469:2017 is applicable only to such devices designed for a service pressure of 20 MPa (200 bar) and 25 MPa (250 bar), to those using CNG according to ISO 15403‑1 and ISO 15403‑2 and ...
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This International Standard sets requirements for LNG bunkering transfer systems and equipment used to bunker LNG fueled ships, which are not covered by the IGC Code. The scope of this standard includes the following five elements.
1) Hardware: Liquid and vapor transfer systems including; connections, rigid articulated piping, hoses, dry disconnect, ERS, and dry break-away emergency release systems and emergency shut systems (ESD stages 1 and 2 )
2) Operational Procedures: Including; communicati...
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