1、Designation: D7326 12D7326 17Standard Practice forHandling, Transportation, and Storage of HFC Blend B(CH2FCF3, CHF2 CF3, 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 rev
2、ision, the 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
3、handling, transportation,and storage of HFC Blend B.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.3 This standard does not purp
4、ort to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D7327
5、 Specification for HFC Blend B (CH2FCF3, CHF2CF3, and CO2)2.1 ASTM Standard:2D7327 Specification for HFC Blend B (CH2FCF3, CHF2CF3, and CO2)2.2 CGA Standards:3C-1 Methods for HydrostaticPressure Testing of Compressed Gas CylindersC-6 StandardsStandard for Visual Inspection of Steel Compressed Gas Cy
6、lindersC-7 Guide to Preparation of Precautionary Labeling and Marking of Compressed Gas ContainersClassification and Labeling ofCompressed GasesP-1 Standard for Safe Handling of Compressed Gases in ContainersSB-1 Safety Bulletin: Hazards of Refilling or Reusing Compressed Refrigerant (Halogenated Hy
7、drocarbon) Gas CylindersSB-5 Safety Bulletin: Hazards of Reusing Disposable Refrigerant (Halogenated Hydrocarbon) Gas CylindersSB-18 Safety Bulletin: Use of Refrigerant (Halogenated Hydrocarbons) Recovery Cylinders2.3 U.S. Government Standards:4CFR Title 49, Part 172, Subpart D, U.S. Department of T
8、ransportation (DOT), Marking Requirements of Packaging forTransportationHazardous Materials Table, Special Provisions, Hazardous Materials Communications, Emergency ResponseInformation, and Training RequirementsCFR Title 49, Part 172.101, U.S. DOT, Tables of Hazardous Materials and Special Provision
9、sCFR Title 49, Part 173, U.S. DOT, Shippers-General Requirements for Shipping and PackagingsCFR Title 49, Part 178, U.S. DOT, Specifications for PackagingsCFR Title 49, Part 180, U.S. DOT, Continuing Qualification and Maintenance of Packagings1 This practice is under the jurisdiction of ASTM Committ
10、ee D26 on Halogenated Organic Solvents and Fire Extinguishing Agents and is the direct responsibility ofSubcommittee D26.09 on Fire Extinguishing Agents.Current edition approved Sept. 1, 2012Feb. 1, 2017. Published October 2012February 2017.Originally . Originally approved in 2006. Last previous edi
11、tion approved in20062012 as D7326-06-12.1. DOI: 10.1520/D7326-12. 10.1520/D7326-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standardsstandards Document Su
12、mmary page on the ASTM website.3 Available from Compressed Gas Association. Online, .Association (CGA), 14501 George Carter Way, Suite 103, Chantilly, VA 20151, http:/.4 Available from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20036.U.S. Government Publishing Offic
13、e (GPO), 732 N. CapitolStreet, NW, Washington, DC 20401-0001, http:/www.gpo.gov.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequa
14、tely depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocke
15、n, PA 19428-2959. United States13. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 containersstorage 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), an
16、dcarbon dioxide (CO2); a compound used to inert, extinguish, or suppress a fire or explosion hazard.3.1.4 insulatedplaced in an isolated situation to protect and prevent the transfer of damage.4. Significance and Use4.1 This practice provides requirements for the handling, transportation, and storag
17、e of HFC Blend B encountered indistribution through both commercial and military channels. It is intended to ensure that HFC Blend B is handled, transported, andstored in such a way that its physical property virtues are not degraded. Transport may be by various means, such as, but not limitedto, hi
18、ghway, rail, water, and air.5. Practice5.1 To ensure safe handling, loading, unloading, storing, and transporting of material, personnel shall be trained in the CGApublications and Title 49 CFR regulations as listed in Sections 2.2 and 2.3, respectively.5.2 Handling:5.2.1 Handling shall be in accord
19、ance with CGA P-1, Safe Handling of Compressed Gases in Containers.5.2.1.1 Personnel who handle or store, or both, cylinders of HFC Blend B shall be trained properly to recognize and identifythe characteristics of the product and the proper methods of safely handling full, partially full, and empty
20、cylinders.5.2.2 All HFC Blend B transfers between storage containers and recycling processes shall be performed by personnel trainedin handling procedures.5.2.2.1 HFC Blend B recycling and transfer processes shall be in conjunction with the equipment specified by the manufacturer.5.2.3 To preclude p
21、roduct accumulation and decomposition, HFC Blend B handling shall be performed in nonsmoking,heater-free, ventilated areas to preclude product accumulation. ventilated areas that are nonsmoking and free of portable heaters.Provisions shall be made to ensure that service areas limit HFC Blend B conce
22、ntrations do not exceed 75,00075 000 ppm (7.5 %)by volume for 1 min and 100 ppm by volume for a time weighted exposure of 8 h.5.2.4 Cylinders shall not be overfilled. The liquid portion of the HFC Blend B must not completely fill the containers internalvolume at any temperature up to and including 1
23、30F (54C).130 F (54 C). The maximum permitted filling density for HFCBlend B shall be 58 lb/ft3 (930 kg/m3). Filling density requirements are 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 that prevents contamination or commingling
24、of halocarbons other thanHFC Blend B.5.2.6 Cylinders shall be free of dirt and contamination that would contribute to or would cause deterioration of product duringshipment or storage. Precautions should be taken to prevent the entry of oil, water, or any other foreign matter into containers.Unique
25、coatings or preservatives applied prior to shipment to protect the containers are not considered contamination.5.3 Transportation:5.3.1 Transportation shall be as specified in accordance with DOT regulations of Title 49 CFR.5.3.1.1 Shipment of materials between collectors, recyclers, and reclaimers
26、should be within approved DOTguidelines for Class2, Division 2.2, regulated materials.Any further provisions for special transportation or packaging should be agreed upon betweenthe collectors, recyclers, and reclaimers.5.3.1.2 The minimum design pressure requirements shall be as indicated in Title
27、49 CFR, Part 173.304. The pressure inside thecontainer at 70F (21C)70 F (21 C) shall not exceed the service pressure for which the container is marked. The pressure insidethe container at 130F (54C)130 F (54 C) shall not exceed 54 times the service pressure for which the container is marked. Fig.1 a
28、nd Fig. 2 illustrate the effect of temperature on a typical storage cylinder filled with HFC Blend B. Extinguisher filters filledwith HFC Blend B may be under additional nitrogen pressurization and isometric diagrams for these conditions are provided inFigs. 3-6.5.3.2 Transportation shall be by suit
29、able vehicles to preclude cylinder damage by excessive mechanical vibration, shock,freezing, or deleterious low or high temperatures throughout the entire transport route.5.3.2.1 If cylinders are expected to be subjected to unacceptable transport conditions, the cylinders should be placed underinsul
30、ated conditions.5.3.3 Compressed gas cylinder permanent marking requirements shall be as specified under Title 49 CFR Part 178 and must bemaintained in legible condition as required by Title 49 CFR Part 173.5.4 Storage:D7326 1725.4.1 Storage shall be in accordance with CGA P-1, Safe Handling of Comp
31、ressed Gases in Containers, in qualified cylindersin accordance with Title 49 CFR Parts 173 and 178.5.4.2 Cylinders should be stored in areas that will protect vessels from physical and environmental damage and tampering fromunauthorized personnel.5.4.2.1 Facilities should be of construction and ori
32、entation so that safety requirements are fulfilled for the storage of pressurizedcylinders.5.4.3 Storage cylinders shall be fitted with pressure release mechanisms to limit vessel pressure to not more than the minimumrequired test pressure of the cylinder. Safety relief valves should be set not less
33、 than 75 %, nor more than 100 % of the minimumrequired test pressure of the cylinder. Safety valves shall be in contact with the vapor space of the cylinder.FIG. 1 Saturated Vapor Pressure of HFC Blend BEnglish UnitsFIG. 2 Saturated Vapor Pressure of HFC Blend BSI UnitsD7326 1735.4.3.1 Periodic hydr
34、ostatic testing and reinspection of cylinders used for recycled HFC Blend B shall comply with CFR Title49, Part 180.5.4.4 Containers shall be clearly marked and labeled to identify whether the HFC Blend B contained does or does not conformto Specification D7327.5.4.5 Insulation shall be placed on pa
35、llets or shoring, and provisions should be made to prevent excessive shock or thermalfluctuations to cylinders.FIG. 3 Isometric Diagram of HFC Blend B Pressurized with Nitrogen to 360 psig 70FEnglishat 70 FEnglish UnitsFIG. 4 Isometric Diagram of HFC Blend B Pressurized with Nitrogen to 600 psig 70F
36、Englishat 70 FEnglish UnitsD7326 1745.4.6 Cylinders shall be stored in a manner that will prevent contamination from external sources.5.4.6.1 If HFC Blend B meeting the standards of Specification D7327 is stored in the same area as material not meeting thestandards, storage shall be segregated or cl
37、early identifiable as not being similar.FIG. 5 Isometric Diagram of HFC Blend B Pressurized with Nitrogen to 25 bar 21CSIat 21 CSI UnitsFIG. 6 Isometric Diagram of HFC Blend B Pressurized with Nitrogen to 42 bar 21CSI at 21 CSI UnitsD7326 1756. Inspection6.1 HFC Blend B that is reclaimed using HFC B
38、lend B manufacturer-approved reclamation systems may be released for reissue,provided test examination to validate the material to specification is fulfilled.6.1.1 Reclaimed HFC Blend B that cannot be proven to comply with Specification D7327 shall not be reissued. The materialwill be processed by e
39、nvironmentally safe methods until conformance to the product standard is achieved.7. Container, Packaging, and Package Marking7.1 Containers used for shipping and storage of HFC Blend B conforming to this specification shall be marked in accordancewith Code of Federal Regulations (CFR) Title 49, Par
40、t 172, Subpart D. The proper shipping name is “Compressed Gases. N.O.S.,(contains pentafluoroethane, carbon dioxide), 2.2, UN1956.” “UN3163, Liquefied Gas, N.O.S., 2.2 (contains 1,1,1,2-Tetrafluorethane, Pentafluoroethane, Carbon Dioxide).” In addition to DOT requirements, containers should be marke
41、d with thefollowing information as a minimum:7.1.1 Suppliers name and address, and7.1.2 HFC Blend B.7.1.3 Statement that material conforms to ASTM Specification D7327.8. Keywords8.1 1,1,1,2-tetrafluoroethane; carbon dioxide; CH2FCFl3; CHF2CF3; CO2; HFC-134a; HFC Blend B; carbon dioxide; explosionsup
42、pressant; fire extinguishant; fire suppressant;D7326 176Halotron IIHalotron5; II; handling; pentafluoroethane; reclamation; recovery; recycling; storagestorage; transportASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin
43、 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 revision at any time by the responsible technical committee and mus
44、t 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 comments will receive careful consideration at a meeting of ther
45、esponsible 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 copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700,
46、 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ HalotronHalotron is a registered trademark of American Pacific Corporation.D7326 177
