1、Designation: D7326 12Standard Practice forHandling, Transportation, and Storage of HFC Blend B(CH2FCF3, CHF2CF3, and CO2)1This standard is issued under the fixed designation D7326; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, th
2、e year 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,reclaimers, purchasers, and users in the handling,t
3、ransportation, and storage of HFC Blend B.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 addre
4、ss 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:2D7327 Specifica
5、tion for HFC Blend B (CH2FCF3,CHF2CF3, and CO2)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 Handl
6、ing of Compressed Gases in ContainersSB-1 Safety Bulletin: Hazards of Refilling CompressedRefrigerant (Halogenated Hydrocarbon) Gas CylindersSB-5 Safety Bulletin: Hazards of Reusing Disposable Re-frigerant (Halogenated Hydrocarbon) Gas CylindersSB-18 Safety Bulletin: Use of Refrigerant (HalogenatedH
7、ydrocarbons) Recovery Cylinders2.3 U.S. Government Standards:4CFR Title 49, Part 172, Subpart D, U.S. Department ofTransportation (DOT), Marking Requirements of Packag-ing for TransportationCFR Title 49, Part 172.101, U.S. DOT, Tables of HazardousMaterials and Special ProvisionsCFR Title 49, Part 17
8、3, U.S. DOT, Shippers-General Re-quirements for Shipping and PackagingsCFR Title 49, Part 178, U.S. DOT, Specifications for Pack-agingsCFR Title 49, Part 180, U.S. DOT, Continuing Qualificationand Maintenance of Packagings3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 contain
9、ersstorage vessels for HFC Blend B.3.1.2 cylinderscontainers of HFC Blend B.3.1.3 HFC Blend Btertiary blend comprised of HFC-134a(1,1,1,2-tetrafluoroethane), HFC-125 (pentafluoroethane), andcarbon dioxide (CO2); a compound used to inert, extinguish, orsuppress a fire or explosion hazard.3.1.4 insula
10、tedplaced 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 Blend B encountered indistribution through both commercial and military channels. Itis intended to ensure
11、 that HFC Blend B is handled, transported,and stored in such a way that its physical property virtues arenot degraded. Transport may be by various means, such as, butnot limited to, highway, rail, water, and air.5. Practice5.1 To ensure safe handling, loading, unloading, storing,and transporting of
12、material, personnel shall be trained in the1This practice is under the jurisdiction of ASTM Committee D26 on Haloge-nated Organic Solvents and Fire Extinguishing Agents and is the direct responsi-bility of Subcommittee D26.09 on Fire Extinguishing Agents.Current edition approved Sept. 1, 2012. Publi
13、shed October 2012.Originallyapproved in 2006. Last previous edition approved in 2006 as D7326-061. DOI:10.1520/D7326-12.2For 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
14、 to the standards Document Summary page onthe ASTM website.3Available from Compressed Gas Association. Online, .4Available from Superintendent of Documents, U.S. Government PrintingOffice, Washington, DC 20036.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19
15、428-2959. United States1CGA publications and Title 49 CFR regulations as listed inSections 2.2 and 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 Blend B
16、 shall be trained properly to recognize andidentify the characteristics of the product and the propermethods of safely handling full, partially full, and emptycylinders.5.2.2 All HFC Blend B transfers between storage containersand recycling processes shall be performed by personneltrained in handlin
17、g procedures.5.2.2.1 HFC Blend B recycling and transfer processes shallbe in conjunction with the equipment specified by the manu-facturer.5.2.3 HFC Blend B handling shall be in nonsmoking,heater-free, ventilated areas to preclude product accumulation.Provisions shall be made to ensure that service
18、areas limit HFCBlend B concentrations do not exceed 75,000 ppm (7.5 %) byvolume for 1 min and 100 ppm by volume for a time weightedexposure of 8 h.5.2.4 Cylinders shall not be overfilled. The liquid portion ofthe HFC Blend B must not completely fill the containersinternal volume at any temperature u
19、p to and including 130F(54C). The maximum permitted filling density for HFC BlendB shall be 58 lb/ft3(930 kg/m3). Filling density requirementsare specified in Title 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 commingli
20、ng of halocarbons otherthan HFC Blend B.5.2.6 Cylinders shall be free of dirt and contamination thatwould contribute to or would cause deterioration of productduring shipment or storage. Precautions should be taken toprevent the entry of oil, water, or any other foreign matter intocontainers. Unique
21、 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 collectors, recyclers,and reclaimers s
22、hould 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.5.3.1.2 The minimum design pressure requirements shall beas indicated in Title
23、 49 CFR, Part 173.304. The pressure insidethe container at 70F (21C) shall not exceed the servicepressure for which the container is marked. The pressure insidethe container at 130F (54C) shall not exceed54 times theservice pressure for which the container is marked. Fig. 1 andFig. 2 illustrate the
24、effect of temperature on a typical storagecylinder filled with HFC Blend B. Extinguisher filters filledwith HFC Blend B may be under additional nitrogen pressur-ization and isometric diagrams for these conditions are pro-vided in Figs. 3-6.5.3.2 Transportation shall be by suitable vehicles to pre-cl
25、ude cylinder damage by excessive mechanical vibration,shock, freezing, or deleterious high temperatures throughoutthe entire transport route.FIG. 1 Saturated Vapor Pressure of HFC Blend BEnglish UnitsD7326 122FIG. 2 Saturated Vapor Pressure of HFC Blend BSI UnitsFIG. 3 Isometric Diagram of HFC Blend
26、 B Pressurized with Nitrogen to 360 psig 70FEnglish UnitsD7326 123FIG. 4 Isometric Diagram of HFC Blend B Pressurized with Nitrogen to 600 psig 70FEnglish UnitsFIG. 5 Isometric Diagram of HFC Blend B Pressurized with Nitrogen to 25 bar 21CSI UnitsD7326 1245.3.2.1 If cylinders are expected to be subj
27、ected to unac-ceptable transport conditions, the cylinders should be placedunder insulated conditions.5.3.3 Compressed gas cylinder permanent marking require-ments shall be as specified under Title 49 CFR Part 178 andmust be maintained in legible condition as required by Title 49CFR Part 173.5.4 Sto
28、rage:5.4.1 Storage shall be in accordance with CGA P-1, SafeHandling of Compressed Gases in Containers, in qualifiedcylinders in accordance with Title 49 CFR Parts 173 and 178.5.4.2 Cylinders should be stored in areas that will protectvessels from physical and environmental damage and tamper-ing fro
29、m unauthorized personnel.5.4.2.1 Facilities should be of construction and orientationso that safety requirements are fulfilled for the storage ofpressurized cylinders.5.4.3 Storage cylinders shall be fitted with pressure releasemechanisms to limit vessel pressure to not more than theminimum required
30、 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 in contact with the vapor space of the cylinder.5.4.3.1 Periodic hydrostatic testing and reinspection of cyl-inders us
31、ed for recycled HFC Blend B shall comply with CFRTitle 49, Part 180.5.4.4 Containers shall be clearly marked and labeled toidentify whether the HFC Blend B contained does or does notconform to Specification D7327.5.4.5 Insulation shall be placed on pallets or shoring, andprovisions should be made to
32、 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 Blend B meeting the standards of Specifica-tion D7327 is stored in the same area as material not meetingthe standards, storage
33、shall be segregated or clearly identifiableas not being similar.6. Inspection6.1 HFC Blend B that is reclaimed using HFC Blend Bmanufacturer-approved reclamation systems may be releasedfor reissue, provided test examination to validate the materialto specification is fulfilled.6.1.1 Reclaimed HFC Bl
34、end B that cannot be proven tocomply with Specification D7327 shall not be reissued. Thematerial will be processed by environmentally safe methodsuntil conformance to the product standard is achieved.7. Container, Packaging, and Package Marking7.1 Containers used for shipping and storage of HFC Blen
35、dB conforming to this specification shall be marked in accor-dance with Code of Federal Regulations (CFR) Title 49, Part172, Subpart D. The proper shipping name is “CompressedGases. N.O.S., (contains pentafluoroethane, carbon dioxide),2.2, UN1956.” In addition to DOT requirements, containersshould b
36、e marked with the following information as a mini-mum:FIG. 6 Isometric Diagram of HFC Blend B Pressurized with Nitrogen to 42 bar 21CSI UnitsD7326 1257.1.1 Suppliers name and address, and7.1.2 HFC Blend B.7.1.3 Statement that material conforms to ASTM Specifica-tion D7327.8. Keywords8.1 1,1,1,2-tetr
37、afluoroethane; CH2FCFl3; CHF2CF3;CO2;HFC-134a; HFC Blend B; carbon dioxide; explosion suppres-sant; fire extinguishant; fire suppressant; Halotron II5; han-dling; pentafluoroethane; reclamation; recovery; recycling;storage; transportASTM International takes no position respecting the validity of any
38、 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 is subject to revi
39、sion 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 Headquarters. Your
40、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 standard is copyri
41、ghted 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).5Halotron is a registered trademark of American Pacific Corporation.D7326 126
