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ASTM D 7940 : 2014

ASTM D 7940 : 2014

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Practice for Analysis of Liquefied Natural Gas (LNG) by Fiber-Coupled Raman Spectroscopy

Available format(s)

Hardcopy , PDF

Superseded date

04-01-2022

Language(s)

English

Published date

16-07-2014

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 05.06, 2014 Defines both on-line and laboratory instrument-based determination of composition for liquefied natural gas (LNG) using Raman spectroscopy.

1.1This standard practice is for both on-line and laboratory instrument-based determination of composition for liquefied natural gas (LNG) using Raman spectroscopy. The basic methodology can also be applied to other light hydrocarbon mixtures in either liquid or gaseous states, if the needs of the application are met, although the rest of this practice refers specifically to liquids. From the composition, gas properties such as heating value and the Wobbe index may be calculated. The components commonly determined according to this test method are CH4, C2H6, C3H8, i-C4H10, n-C4H10, iC5H12, n-C5H12, neo-C5H12, N2, O2. The applicable range of this standard is 200 ppmv to 100 mol %. Components heavier than C5 are not measured as part of this practice.

Note 1:Raman spectroscopy does not directly quantify the component percentages of noble gases, however, inerts can be calculated indirectly by subtracting the sum of the other species from 100 %.

1.2The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Committee
D 03
DocumentType
Standard Practice
Pages
9
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy

ASTM D 1946 : 1990 : R2015 : EDT 1 Standard Practice for Analysis of Reformed Gas by Gas Chromatography
BS EN 60079-28:2015 Explosive atmospheres Protection of equipment and transmission systems using optical radiation
ASTM D 3588 : 1998 : R2017 : EDT 1 Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels
ASTM D 3588 : 1998 : R2017 Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels
ASTM D 4150 : 2021 : REV A Standard Terminology Relating to Gaseous Fuels
ASTM D 4150 : 2020 : REV A Standard Terminology Relating to Gaseous Fuels
ASTM D 1945 : 1996 : EDT 1 Standard Test Method for Analysis of Natural Gas by Gas Chromatography
ASTM E 691 : 2020 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM D 1945 : 1996 : R2001 Standard Test Method for Analysis of Natural Gas by Gas Chromatography
ASTM D 1946 : 1990 : R2006 Standard Practice for Analysis of Reformed Gas by Gas Chromatography
ASTM D 3588 : 1998 Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels
ASTM D 7833 : 2014 : REDLINE Standard Test Method for Determination of Hydrocarbons and Non-Hydrocarbon Gases in Gaseous Mixtures by Gas Chromatography
ASTM D 1946 : 1982 Standard Method for Analysis of Reformed Gas by Gas Chromatography
ASTM E 691 : 2019 : EDT 1 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM D 4150 : 2019 Standard Terminology Relating to Gaseous Fuels
ASTM D 7833 : 2014 Standard Test Method for Determination of Hydrocarbons and Non-Hydrocarbon Gases in Gaseous Mixtures by Gas Chromatography
ASTM E 691 : 2009 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM D 4150 : 2008 Standard Terminology Relating to Gaseous Fuels
ASTM D 4150 : 2000 Standard Terminology Relating to Gaseous Fuels
ASTM D 3588 : 1998 : R2003 Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels
ASTM D 1946 : 1977 Standard Method for Analysis Of Reformed Gas By Gas Chromatography
ASTM D 1945 : 2003 : R2010 Standard Test Method for Analysis of Natural Gas by Gas Chromatography
ASTM D 3588 : 1998 : R2011 Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels
ASTM D 1945 : 2014 : R2019 Standard Test Method for Analysis of Natural Gas by Gas Chromatography
ASTM D 1946 : 1990 : R2000 Standard Practice for Analysis of Reformed Gas by Gas Chromatography
ASTM D 1945 : 2003 Standard Test Method for Analysis of Natural Gas by Gas Chromatography
ASTM D 1946 : 1990 : R2019 Standard Practice for Analysis of Reformed Gas by Gas Chromatography
ASTM D 4150 : 2003 Standard Terminology Relating to Gaseous Fuels
BS EN 60825-1:2014 Safety of laser products Equipment classification and requirements
ASTM D 4150 : 2021 Standard Terminology Relating to Gaseous Fuels
ASTM D 4150 : 2008 : R2016 Standard Terminology Relating to Gaseous Fuels
ASTM D 1945 : 2014 Standard Test Method for Analysis of Natural Gas by Gas Chromatography
ASTM D 4150 : 2021 : REV B Standard Terminology Relating to Gaseous Fuels
ASTM D 7833 : 2020 Standard Test Method for Determination of Hydrocarbons and Non-Hydrocarbon Gases in Gaseous Mixtures by Gas Chromatography
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
ASTM D 1946 : 1990 : R2011 Standard Practice for Analysis of Reformed Gas by Gas Chromatography
ASTM D 1945 : 2014 : REDLINE Standard Test Method for Analysis of Natural Gas by Gas Chromatography
ASTM D 1945 : 1991 Standard Test Method for Analysis of Natural Gas by Gas Chromatography
ASTM D 7833 : 2012 Standard Test Method for Determination of Hydrocarbons and Non-Hydrocarbon Gases in Gaseous Mixtures by Gas Chromatography

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Hardcopy - English
PDF - English
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