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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.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
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 D 2284 may be particularly helpful since many sulfur hexafluoride decomposition products are acidic. Test Method D 2284 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 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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D2029 Test Methods for Water Vapor Content of Electrical Insulating Gases by Measurement of Dew Point
D2284 Test Method for Acidity of Sulfur Hexafluoride
D2685 Test Method for Air and Carbon Tetrafluoride in Sulfur Hexafluoride by Gas Chromatography
ICS Number Code 71.060.50 (Salts)
UNSPSC Code 12352300(Inorganic compounds)