ASTM D6427-21

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it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6427 − 16 D6427 − 21
Standard Practice for
Handling, Transportation, and Storage of HFC-236fa,
1,1,1,3,3,3-Hexafluoropropane (CF CH CF )
3 2 3
This standard is issued under the fixed designation D6427; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice covers guidance and direction to suppliers, purchasers, and users in the handling, transportation, and storage of
HFC–236fa.HFC-236fa.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
D6541 Specification for HFC-236fa, 1,1,1,3,3,3–Hexafluoropropane, (CF CH CF )
3 2 3
2.1 ASTM Standard:
D6541 Specification for HFC-236fa, 1,1,1,3,3,3–Hexafluoropropane, (CF CH CF )
3 2 3
2.2 CGA Standards:
C-1 Methods for Pressure Testing Compressed Gas Cylinders
C-6 Standards for Visual Inspection of Steel Compressed Gas Cylinders
C-7 Guide to Classification and Labeling of Compressed Gases
P-1 Standard for Safe Handling of Compressed Gases in Containers
SB-1 Safety Bulletin: Hazards of Refilling or Reusing Compressed Refrigerant (Halogenated Hydrocarbon) Gas Cylinders
SB-18 Use of Refrigerant (Halogenated Hydrocarbon)Hydrocarbons) Recovery Cylinders
This practice is under the jurisdiction of ASTM Committee D26 on Halogenated Organic Solvents and Fire Extinguishing Agents and is the direct responsibility of
Subcommittee D26.09 on Fire Extinguishing Agents.
Current edition approved July 1, 2016June 1, 2021. Published July 2016June 2021. Originally approved in 1999. Last previous edition approved in 20102016 as
D6427/D6427MD6427-10.-16. DOI: 10.1520/D6427-16.10.1520/D6427-21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
Available from Compressed Gas Association (CGA), 14501 George Carter Way, Suite 103, Chantilly, VA 20151,8484 Westpark Drive, Suite 220, McLean, VA 22102,
http://www.cganet.com.
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D6427 − 21
2.3 U.S. Government Standards:
Code of Federal Regulations (CFR) Title 40, Part 82.106 Environmental Protection Agency, Warning Statement Requirements
49 CFR Title 49, Part 172 U.S. Department of Transportation (DOT), Hazardous Materials Table, Special Provisions, Hazardous
Materials Communications, Emergency Response Information, and Training RequirementsTraining Requirements, and
Security Plans
49 CFR Title 49, Part 172.101 U.S. DOT, TablesPurpose and Use of Hazardous Materials and Special ProvisionsTable
49 CFR Title 49, Part 173 U.S. DOT, Shippers-General Shippers—General Requirements for ShippingShipments and
Packagings
49 CFR Title 49, Part 178 U.S. DOT, Specifications for Packagings
49 CFR Title 49, Part 180 U.S. DOT, Continuing Qualification and Maintenance of PackagesPackagings
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 containers, n—storage vessel for HFC-236fa.
3.1.2 cylinders, n—containers of HFC-236fa.
3.1.3 HFC-236fa, n—1,1,1,3,3,3-hexafluoropropane, a compound used to inert or suppress a fire or explosion hazard.
3.1.4 insulated, v—adj—placed in an isolated situation to protect and prevent the transfer of damage.
4. Significance and Use
4.1 This practice provides requirements for the handling, transportation, and storage of HFC–236faHFC-236fa encountered in
distribution through both commercial and military channels. It is intended to ensure that HFC-236fa is handled, transported, and
stored 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.
5. Practice
5.1 To ensure safe handling, loading, unloading, storing, and transporting of material, personnel shall be trained in the CGA
publications and Title 49 CFR regulations as listed in 2.2 and 2.3, respectively.
5.2 Handling:
5.2.1 Handling shall be in accordance with P-1, Safe Handling of Compressed Gases in Containers.CGA Publication P-1.
5.2.1.1 Personnel who handle or store, or both, cylinders of HFC-236fa shall be trained properly to recognize and identify the
characteristics of the product and the proper methods of safely handling full, partly full, and empty cylinders.
5.2.2 All HFC-236fa transfers between storage containers and recycling processes shall be performed by personnel trained in
handling procedures.
5.2.2.1 Facility personnel must be trained in applicable Code of Federal Regulations (CFR) Title 49, Part 173 and Code of Federal
Regulations (CFR) Title 49, Part 178, and the CGA documents referenced in 2.2.
5.2.3 The HFC-236fa recycling and transfer processes shall be in conjunction with the equipment specified by the manufacturer.
5.2.4 The handling of HFC-236fa shall be in nonsmoking, heater-free, ventilated areas to preclude product accumulation.
Provisions shall be made to ensure that service areas limit area HFC-236fa concentrations todo not exceed 15 % for 1 min and
0.1 % for 8 h.8 h.
5.2.5 Cylinders shall not be over filled. The liquid portion of the liquefied gases must not completely fill the container’s internal
Available Code of Federal Regulations (CFR) documents are available from U.S. Government Publishing Office, Office (GPO), 732 N. Capitol St., NW, Washington,
DC 20401-0001,20401, http://www.gpo.gov.
D6427 − 21
volume at any temperature up to and including 130°F (54°C).130 °F (54 °C). The maximum permitted filling density for
3 3
HFC-236fa shall be 78 lb/ft (1249 kg/m ). The maximum permitted filling density for HFC-236fa pressurized with nitrogen to
3 3
360 psig (25.8 bar)
...