1、Designation: D6268 15Standard Practice forHandling, Transportation, and Storage of HFC-125,Pentafluoroethane (C2HF5)1This standard is issued under the fixed designation D6268; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea
2、r 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, a
3、ndstorage 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 mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to
4、 address all of thesafety concerns, if any, associated with its use. It is theresponsibility 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:2D6231 Spe
5、cification for HFC-125 (Pentafluoroethane,C2HF5)2.2 CGA Standards:3C-1 Methods for Hydrostatic Testing of Compressed GasCylindersC-6 Standards for Visual Inspection of Steel CompressedGas CylindersC-7 Guide to Preparation of Precautionary Labeling andMarking of Compressed Gas ContainersP-1 Safe Hand
6、ling of Compressed Gases in ContainersSB-1 Hazards of Refilling Compressed Refrigerant (Haloge-nated Hydrocarbon) Gas CylindersSB-5 Safety Bulletin: Hazards of Reusing Disposable Re-frigerant (Halogenated Hydrocarbon) Gas CylindersSB-18 Safety Bulletin: Use of Refrigerant (HalogenatedHydrocarbons) R
7、ecovery Cylinders2.3 U.S. Government Standards:4Code of Federal Regulations (CFR) Title 40, Part82.106, Environmental Protection Agency, Warning State-ment RequirementsCFR Title 49, Part 172, U.S. DOT Hazardous MaterialsTable, Special Provisions, Hazardous MaterialsCommunications, Emergency Response
8、 Information, andTraining RequirementsCFR Title 49, Part 172.101, U.S. DOT Tables of HazardousMaterials and Special ProvisionsCFR Title 49, Part 173, U.S. DOT Shippers-General Re-quirements for Shipping and PackagingCFR Title 49, Part 178, U.S. DOT Specification for Pack-agingsCFR Title 49, Part 180
9、, U.S. DOT Continuing Qualificationand Maintenance of 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
10、explosion hazard.3.1.4 insulatedplaced in an isolated 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 channe
11、ls. It isintended to insure that HFC-125 is handled, 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-nat
12、ed Organic Solvents and Fire Extinguishing Agents and is the direct responsi-bility of Subcommittee D26.09 on Fire Extinguishing Agents.Current edition approved Jan. 1, 2015. Published April 2015. Originallyapproved in 1998. Last previous edition approved in 2009 as D626809. DOI:10.1520/D6268-15.2Fo
13、r 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 page onthe ASTM website.3Available from the Compressed Gas Association (CGA), 14501 Geor
14、ge CarterWay, Suite 103, Chantilly, VA 20151, http:/.4Available from U.S. Government Publishing Office, 732 N. Capitol St., NW,Washington, DC 204010001, http:/www.gpo.gov.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15. Practice5.1
15、To ensure safe handling, loading, unloading, storing,and transporting of material, personnel shall be trained in theCGA publications and Title 49 CFR regulations 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
16、 Containers, and as specifiedby the manufacturer.5.2.1.1 Personnel who handle or store, or both, cylinders ofHFC-125 shall be trained properly to recognize and identify thecharacteristics of the product and the proper methods of safelyhandling full, partly full, and empty cylinders.5.2.2 All HFC-125
17、 transfers between storage containers andrecycling processes shall be performed by personnel trained inhandling procedures.5.2.2.1 HFC-125 recycling and transfer processes shall be inconjunction with the equipment specified by the manufacturer.5.2.3 HFC-125 handling shall be in nonsmoking, heater-fr
18、ee, 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 Cylinders shall not be overfilled. The maximum per-mitted filling density shall be 59 lb/ft3(945 kg/m3). The
19、liquidportion of the liquefied gases must not completely fill thecontainers internal volume at any temperature up to andincluding 130F (54C). Filling density requirement are speci-fied in Title 49 CFR, 173.304 and Title 49 CFR, 173.305.5.2.5 Handling of materials should be done in a manner thatpreve
20、nts 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 productduring shipment or storage. Precautions should be taken toprevent the entry of oil, water, or any other foreign m
21、atter 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 as specified in accordance withDOT regulations of Title 49 CFR.5.3.1.1 Shipment of materials between collect
22、ors, 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 agreedupon between the collectors, recyclers, and reclaimers.5.3.2 Transportation shall be in suitable vehic
23、les to precludecylinder damage by excessive mechanical vibration, shock,freezing, or deleterious high temperatures throughout the entiretransport route.5.3.2.1 Should cylinders be expected to be subject to unac-ceptable transport conditions, the cylinders should be placedunder insulated conditions.5
24、.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 173NOTE 1Applicable to a container fill density of 57.5 lb/ft3only.FIG. 1 Effect of Temperature on Storage Cylinder Pressur
25、e (HFC-125 Mixed with Nitrogen)D6268 152of Title 49 CFR. Warning labels shall be affixed to the cylindersconforming to requirements of Part 82.106 of Title 40 CFR.5.4 Storage:5.4.1 Storage shall be in accordance with CGA P-1, inqualified cylinders in accordance with Parts 173 and 178 ofTitle 49 CFR.
26、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 oriented sothat safety requirements are fulfilled for storage of pressurizedcylinders.5.4.3 Storage cy
27、linders 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 75 %, nor more than 100 %of the minimum required test pressure of the cylinder. Safetyvalves shall be i
28、n 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 clearly marked and labeled toidentify whether the HFC-125 contained conforms to Specifi-cation D6231.5.
29、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 will preventcontamination from external sources.5.4.6.1 If HFC-125 meeting the standards of Practice D6268
30、is stored in the same area as material not meeting the standards,storage shall be segregated or clearly identifiable as not beingsimilar.6. Inspection6.1 HFC-125 that is reclaimed using HFC-125manufacturer-approved reclamation systems may be releasedfor reissue, provided test examination to validate
31、 the materialto specification is fulfilled.6.1.1 Reclaimed HFC-125 that cannot be proven to complywith Specification D6231 shall not be reissued. The materialwill be processed by environmentally safe methods untilconformance to the product standard is achieved.7. Keywords7.1 C2HF5; compressed gas; c
32、ompressed liquefied gas; cyl-inders; explosion suppressant; FE-25; fire suppressant; han-dling; HFC-125; pentafluoroethane; storage; transportASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of thi
33、s 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 is subject to revision at any time by the responsible technical committee and must be reviewed every five yea
34、rs 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 Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical commit
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36、8-2959,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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 153
