1、Designation: D 6268 09Standard Practice forHandling, Transportation, and Storage of HFC-125,Pentafluoroethane (C2HF5)1This standard is issued under the fixed designation D 6268; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the y
2、ear of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers guidance and direction to suppliers,purchasers, and users in the handling, transportation,
3、 andstorage of HFC-125, pentafluoroethane (C2HF5).1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are for informa-tion only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresp
4、onsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 6231 Specification for HFC-125 (Pentafluoroethane,C2HF5)D 6268 Practice for Handling, Tra
5、nsportation, and Storageof HFC-125, Pentafluoroethane (C2HF5)2.2 CGA Standards:3C-6 Standards for Visual Inspection of Steel CompressedGas CylindersC-7 Guide to Preparation of Precautionary Labeling andMarking of Compressed Gas ContainersP-1 Safe Handling of Compressed Gases in ContainersSB-1 Hazard
6、s of Refilling Compressed Refrigerant (Halo-genated Hydrocarbon) Gas CylindersSB-5 Safety Bulletin: Hazards of Reusing Disposable Re-frigerant (Halogenated Hydrocarbon) Gas CylindersSB-18 Safety Bulletin: Use of Refrigerant (HalogenatedHydrocarbons) Recovery Cylinders2.3 U.S. Government Standards:4C
7、ode of Federal Regulations (CFR) Title 49, Part82.106, Environmental Protection Agency, WarningStatement RequirementsCFR Title 49, Part 172, U.S. DOT Hazardous MaterialsTable, Special Provisions, Hazardous Materials Commu-nications, Emergency Response Information, and TrainingRequirementsCFR Title 4
8、9, Part 172.101, U.S. DOT Tables of HazardousMaterials and Special ProvisionsCFR Title 49, Part 173, U.S. DOT Shippers-GeneralRequirements for Shipping and PackagingCFR Title 49, Part 178, U.S. DOT Specification forPackagingsCFR Title 49, Part 180, U.S. DOT Continuing Qualificationand Maintenance of
9、 Packagings3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 containersstorage vessels for HFC-125.3.1.2 cylinderscontainers of HFC-125.3.1.3 HFC-125pentafluoroethane, a compound used toinert, extinguish or suppress a fire or explosion hazard.3.1.4 insulatedplaced in an isolated
10、 situation to protectand prevent the transfer of damage.4. Significance and Use4.1 This practice provides requirements for the handling,transportation, and storage of HFC-125 encountered in distri-bution through both commercial and military channels. It isintended to insure that HFC-125 is handled,
11、transported, andstored in such a way its physical properties are not degraded.Transport may be by various means, such as, but not limited to,highway, rail, water, and air.1This practice is under the jurisdiction of ASTM Committee D26 on Haloge-nated Organic Solvents and Fire Extinguishing Agents and
12、 is the direct responsi-bility of Subcommittee D26.09 on Fire Extinguishing Agents.Current edition approved Jan. 1, 2009. Published February 2009. Originallyapproved in 1998. Last previous edition approved in 2003 as D 626898(2003).2For referenced ASTM standards, visit the ASTM website, www.astm.org
13、, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from the Compressed Gas Association.4Available from Superintendent of Documents, U.S. Government PrintingOffice, Washi
14、ngton, DC 20036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Practice5.1 To ensure safe handling, loading, unloading, storing,and transporting of material, personnel shall be trained in theCGA publications and Title 49 CFR regu
15、lations as listed in 2.2and 2.3, respectively.5.2 Handling:5.2.1 Handling shall be in accordance with CGA P-1, SafeHandling of Compressed Gases in Containers.5.2.1.1 Personnel who handle or store, or both, cylinders ofHFC-125 shall be trained properly to recognize and identify thecharacteristics of
16、the product and the proper methods of safelyhandling full, partly full, and empty cylinders.5.2.2 All HFC-125 transfers between storage containers andrecycling processes shall be performed by personnel trained inhandling procedures.5.2.2.1 HFC-23 recycling and transfer processes shall be inconjuncti
17、on with the equipment specified by the manufacturer.5.2.3 HFC-125 handling shall be in nonsmoking, heater-free, ventilated areas to preclude product accumulation. Provi-sions shall be made to ensure that service areas limit HFC-125concentrations to not exceed 10 % for 1 min and 0.1 % for 8 h.5.2.4 C
18、ylinders shall not be overfilled. The maximum per-mitted filling density shall be 945 kg/m3(59 lb/ft3). The liquidportion of the liquefied gases must not completely fill thecontainers internal volume at any temperature up to andincluding 54C (130F). Filling density requirement are speci-fied in Titl
19、e 49 CFR, 173.304 and Title 49 CFR, 173.305.5.2.5 Handling of materials should be done in a manner thatprevents contamination or co-mingling of materials other thanHFC-125.5.2.6 Cylinders shall be free of dirt and contamination thatwould contribute to or would cause deterioration of the productdurin
20、g shipment or storage. Precautions should be taken toprevent the entry of oil, water, or any other foreign matter intothe container. Unique coatings or preservatives applied prior toshipment to protect the containers are not considered contami-nation.5.3 Transportation:5.3.1 Transportation shall be
21、as specified in accordance withDOT regulations of Title 49 CFR.5.3.1.1 Shipment of materials between collectors, recyclers,and reclaimers should be within approved DOT guidelines forClass 2, Division 2.2, regulated materials. Any further provi-sions for special transportation or packaging should be
22、agreedupon between the collectors, recyclers, and reclaimers.5.3.2 Transportation shall be in suitable vehicles to precludecylinder damage by excessive mechanical vibration, shock,freezing, or deleterious high temperatures throughout the entiretransport route.5.3.2.1 If cylinders are expected to be
23、subject to unaccept-able transport conditions, the cylinders should be placed underinsulated conditions.5.3.3 Compressed gas cylinder permanent marking require-ments shall be as specified under Part 178 of Title 49 CFR andmust be maintained in legible condition as required by Part 173of Title 49 CFR
24、. Warning labels shall be affixed to the cylindersconforming to requirements of Part 82.106 of Title 40 CFR.5.4 Storage:NOTE 1Applicable to a container fill density of 57.5 lb/ft3only.FIG. 1 Effect of Temperature on Storage Cylinder Pressure (HFC-125 Mixed with Nitrogen)D62680925.4.1 Storage shall b
25、e in accordance with CGA P-1,inqualified cylinders in accordance with Parts 173 and 178 ofTitle 49 CFR.5.4.2 Cylinders should be stored in areas that will protectvessels from physical and environmental damage, and tamper-ing from unauthorized personnel.5.4.2.1 Facilities should be in constructed and
26、 oriented sothat safety requirements are fulfilled for storage of pressurizedcylinders.5.4.3 Storage cylinders shall be fitted with pressure releasemechanisms to limit vessel pressure to not more than theminimum required test pressure of the cylinder. Safety reliefvalves should be set not less than
27、75 %, nor more than 100 %of the minimum required test pressure of the cylinder. Safetyvalves shall be in contact with the vapor space of the cylinder.5.4.3.1 Periodic hydrostatic testing and re-inspection ofcylinders used for HFC-125 shall comply with Title 49 CFR,Part 180.5.4.4 Containers shall be
28、clearly marked and labeled toidentify whether the HFC-125 contained conforms to Specifi-cation D 6231.5.4.5 Insulation shall be placed on pallets or shoring andprovisions should be made to prevent excessive shock orthermal fluctuations to cylinders.5.4.6 Cylinders shall be stored in a manner that wi
29、ll preventcontamination from external sources.5.4.6.1 If HFC-125 meeting the standards of SpecificationD 6268 is stored in the same area as material not meeting thestandards, storage shall be segregated or clearly identifiable asnot being similar.6. Inspection6.1 HFC-125 that is reclaimed using HFC-
30、125manufacturer-approved reclamation systems may be releasedfor reissue, provided test examination to validate the materialto specification is fulfilled.6.1.1 Reclaimed HFC-23 that cannot be proven to complywith Specification D 6268 shall not be reissued. The materialwill be processed by environment
31、ally safe methods untilconformance to the product standard is achieved.7. Keywords7.1 HFC-125; FE-25y; Pentafluoroethane; C2HF5; com-pressed gas; compressed liquefied gas; cylinders; explosionsuppressant; fire suppressant; handling; storage; transportASTM International takes no position respecting t
32、he validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard
33、is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International H
34、eadquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This
35、standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D6268093
