ASTM D2472-15(2023)
(Specification)Standard Specification for Sulfur Hexafluoride
Standard Specification for Sulfur Hexafluoride
ABSTRACT
This specification covers the requirements for sulfur hexafluoride intended for use as an electrical insulating gas. However, this specification applies only to gas as purchased. Tests for water content, acidity (hydrolyzable fluorides), noncondensable gas and carbon tetrafluoride content, and assay shall be performed and shall conform to the requirements specified.
SCOPE
1.1 This specification applies to sulfur hexafluoride for use as an electrical insulating gas.
Note 1: This specification is intended to apply only to gas as purchased. However, the test methods referred to in this standard may be useful in the evaluation of in-service or used gas. Test Method D2284 may be particularly helpful since many sulfur hexafluoride decomposition products are acidic. Test Method D2284 should not be used to evaluate the total amount of sulfur hexafluoride decomposition nor to identify contaminant species. This can only be done by gas chromatography and similar instrumental techniques.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D2472 − 15 (Reapproved 2023)
Standard Specification for
Sulfur Hexafluoride
This standard is issued under the fixed designation D2472; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 3. Detail Requirements
1.1 This specification applies to sulfur hexafluoride for use 3.1 Sulfur hexafluoride for use as an electrical insulation
as an electrical insulating gas. material shall conform to the requirements prescribed in Table
1.
NOTE 1—This specification is intended to apply only to gas as
purchased. However, the test methods referred to in this standard may be
4. Sampling
useful in the evaluation of in-service or used gas. Test Method D2284 may
be particularly helpful since many sulfur hexafluoride decomposition
4.1 Withdraw a sample of sulfur hexafluoride from either
products are acidic. Test Method D2284 should not be used to evaluate the
the vapor space or liquid phase of the container.
total amount of sulfur hexafluoride decomposition nor to identify con-
taminant species. This can only be done by gas chromatography and
4.2 For samples collected from the liquid phase the user
similar instrumental techniques.
must ascertain whether or not the cylinder valve is attached to
1.2 The values stated in SI units are to be regarded as
a dip tube. Sample cylinders equipped with a dip tube in an
standard. No other units of measurement are included in this upright position. Invert cylinders not equipped with a dip tube
standard.
for sampling to ensure that the sample is obtained from the
liquid phase of the cylinder.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4.3 Analyses may be performed on vapor space samples for
responsibility of the user of this standard to establish appro-
routine or preliminary testing. If the vapor phase analysis
priate safety, health, and environmental practices and deter-
indicates that impurities are not within specification, a liquid
mine the applicability of regulatory limitations prior to use.
phase sample should be obtained and analysed. The liquid
1.4 This international standard was developed in accor-
phase comprises most of the material in the container and is
dance with internationally recognized principles on standard-
more representative of the overall composition of the SF in the
ization established in the Decision on Principles for the
container. When a discrepancy exists between vapor and liquid
Development of International Standards, Guides and Recom-
phase analyses, the liquid phase analysis shall govern, unless
mendations issued by the World Trade Organization Technical
otherwise agreed to by purchaser-seller agreement.
Barriers to Trade (TBT) Committee.
5. Precautions
2. Referenced Documents
5.1 Refer to the section titled Interferences in Test Method
2.1 ASTM Standards:
D2029.
D2029 Test Methods for Water Vapor Content of Electrical
Insulating Gases by Measurement of Dew Point 6. Test Methods
D2284 Test Method for Acidit
...
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