ASTM D6126-1997(2003)e1 Standard Specification for HFC-23 (Trifluoromethane CHF3)《HFC-23(三氟甲烷、CHF)的标准规范》.pdf
《ASTM D6126-1997(2003)e1 Standard Specification for HFC-23 (Trifluoromethane CHF3)《HFC-23(三氟甲烷、CHF)的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM D6126-1997(2003)e1 Standard Specification for HFC-23 (Trifluoromethane CHF3)《HFC-23(三氟甲烷、CHF)的标准规范》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 6126 97 (Reapproved 2003)e1Standard Specification forHFC-23 (Trifluoromethane, CHF3)1This standard is issued under the fixed designation D 6126; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisi
2、on. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.e1NOTEEditorial changes were made in December 2003.1. Scope1.1 This specification covers the requirements for HFC-23as a fire fighting mediu
3、m.1.2 This specification does not address the fire fightingequipment or hardware that employs HFC-23 or the conditionsof employing such equipment (for example: handshields, fixedinstallations, etc.).1.3 This specification does not address the storage ortransportation of HFC-23 Storage handling, and
4、transportationissues are addressed in Practice D 6127.1.4 The values stated in both inch-pound and SI units are tobe regarded separately as the standard. The values given inparentheses are for information only.1.5 The following safety hazards caveat pertains to the testmethods portion, Section 6, of
5、 this specification: This standarddoes not purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2.
6、Referenced Documents2.1 ASTM Standards:2D 4081 Specification for Dry-Cleaning Grade Perchloroet-hyleneD 6127 Practice for Handling, Transportation, and Storageof HFC-232.2 ISO Standards:ISO 3363 Fluorinated Hydrocarbons for Industrial Use -Determination of Acidity - Titration Method3ISO 3427 Gaseous
7、 Halogenated Hydrocarbons (LiquefiedGases) - Taking a Sample3ISO 5789 Fluorinated Hydrocarbons for Industrial Use -Determination of Nonvolatile Residue32.3 CGA Standards:No. C4, American National Standard Method of MarkingPortable Compressed Gas Containers to Identify theMaterial Contained4No. P-1,
8、Safe Handling of Compressed Gases in Contain-ers42.4 U.S. Governmental Standards:Code of Federal Regulations (CFR) Title 49, Part 172.101Tables of Hazardous Materials and Special Provisions5DOT-E 9491, Exception to Code of Federal Regulations(CFR) Title 49, Part 173.302 and Part 173.3045Code of Fede
9、ral Regulations (CFR) Title 49, Part 173.302and 173.304 Preparation and Packaging of Gases5Code of Federal Regulations (CFR) Title 49, Part 172 SubD Marking Requirements of Packaging for Transporta-tion52.5 American Society of Refrigeration Engineers:ASRE Standard 34, Designation of Refrigerants63.
10、Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 halogenated hydrocarbonthe halogenated com-pound coding terminology system provides a convenientmeans to reference halogenated hydrocarbons, ASRE 34.Halogenated hydrocarbons are saturated hydrocarbons inwhich one or more of the hydr
11、ogen atoms have been replacedby atoms of the halogen series (fluorine, chlorine, bromine, and1This specification is under the jurisdiction of ASTM Committee D26 onHalogenated Organic Solvents and is the direct responsibility of SubcommitteeD26.09 on Halogenated Fire Extinguishants.Current edition ap
12、proved May 10, 1997. Published June 1998.2Annual Book of ASTM Standards, Vol 15.05.For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary pag
13、e onthe ASTM website.3Available from American National Standards Institute, 11 W. 42nd St., 13thFloor, New York, NY 10036.4Available from the Compressed Gas Association.5Available from Superintendent of Documents, U.S. Government PrintingOffice, Washington, DC 20036.6Available from American Society
14、of Refrigeration Engineers, RefrigerationEngineering 65. 49 (1957).1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.iodine). It is convention to prefix the number with an abbre-viation of the compound:CFC = chlorofluorocarbonHCFC = hy
15、drochlorofluorocarbonHFC = hydrofluorocarbonFC = fluorocarbonR = refrigerant3.1.1.1 DiscussionBy definitions, the right most digit ofthe numbering system is the number of fluorine atoms.3.1.1.2 DiscussionThe second digit from the right is thenumber of hydrogen atoms plus one (+1).3.1.1.3 DiscussionT
16、he third digit from the right is oneless (-1) than number of carbon atoms in the compound (whenthis number is zero (0) it is omitted from the number.3.1.1.4 DiscussionUnaccounted for valance requirementsare assumed to be chlorine atoms.3.1.1.5 DiscussionWhen the compound contains bromineor iodine, t
17、he same rules apply except the letter “B” forbromine or “I” for iodine follows the parent compounddesignated number and the number of the atoms is placed afterthe letter.3.1.1.6 DiscussionExampleCHF3= R-23 = HFC-23.3.1.2 HFC-237the compound trifluoromethane; CHF3.4. Material Requirements4.1 Nitrogen
18、 (N2) partial pressure is not required for thisproduct, it is shipped neat. The saturated vapor pressure ofHFC-23 is 42 bars at 21C (610 psig at 70F). HFC-23 has acritical temperature of 25.9C (78.6F). The filling densityshould be that which will not liquid fill the container attemperatures below 25
19、.9C (78.6F) or exceed 5/4 the pressurerating of the container at 130 F. For example, the U.S. DOT3AL cylinder with a minimum working pressure of 1800 psigshall not exceed 42 bar at 21C (610 psig at 70F) for amaximum filling density of 84.4 %. For this example thecylinder pressure is 141 bars at 54C
20、(2045 psig at 130F).4.1.1 HFC-23 shall conform to the requirements prescribedin Table 1 when tested by the appropriate test method(s) listedin Section 6.4.1.2 When material analysis is required, by agreementbetween the purchaser and the supplier, the total pressure in theHFC-23 container, the fill d
21、ensity of the HFC-23 within thecontainer, and the maximum safe storage temperature shall bepart of the material analysis (certification). The pressure shallbe reported in bar (preferred) or pound-force per square inchgage (psig). The fill density shall be reported in kilograms percubic metre at 21C
22、(preferred) or pounds per cubic foot at70F. The maximum safe storage temperature of the HFC-23shall be reported in degrees Celsius (preferred) or in degreesFahrenheit and shall conform to the applicable regulations forthe HFC-23 container design and use.4.2 By agreement between the purchaser and the
23、 supplier,analysis may be required and limits established for elements orcompounds not specified in Table 1.4.3 Product RequirementsSee Table 1.5. Sampling5.1 Samples of HFC-23, taken from the liquid phase, shallbe taken from filled containers in accordance with the methodspecified in ISO 3427. The
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