CGA’s November & December 2019 Safety Publications (New Releases & Revisions)

January 3, 2020

During November and December 2019, the Compressed Gas Association (CGA) issued the following new and/or revised safety standards, position statements, and safety alerts:

CGA C-11 – Practices for Inspection of Compressed Gas Cylinders at Time of Manufacture

Released: November 7, 2019 (6th Edition)

This publication is applicable to cylinders, tubes, and spheres, hereafter referred to as cylinders, and to inspection by either an approved independent inspection agency (IIA) or inspectors of the manufacturer.

The purpose of this publication is to promote safety by outlining inspection requirements of DOT in Title 49 of the U.S. Code of Federal Regulations, CSA B339, Cylinders, spheres, and tubes for the transportation of dangerous goods, and CSA B341, UN pressure receptacles and multiple-element gas containers for the transport of dangerous goods as adopted by the Transportation of Dangerous Goods Regulations of Transport Canada (TC) for cylinders as interpreted and practiced by manufacturers and inspectors.

Previous edition cited in 49 CFR.

CGA C-29 – Standard for Design Requirements for Tube Trailers and Tube Modules (Formerly TB-25)

Released: November 8, 2019 (1st Edition)

This standard defines basic design requirements for tube trailers and tube modules, manufactured or modified on or after May 11, 2009, to maintain structural integrity during normal conditions of handling and transport.

A tube trailer or tube module manufactured in accordance with standard is less likely to have a separation of the tubes from the trailer or bundle or an unintentional release of product when subjected to the multidirectional forces that can occur in a highway collision including a rollover accident. Tube modules shall meet the loading and accident protection standards that are applied to tube trailers.

This standard does not address multiple-element gas containers (MEGCs). The design requirements for a MEGC are found in Title 49 of the U.S. Code of Federal Regulations (49 CFR) Part 178.75.

CGA E-6 – Standard for Hydraulic Type Pipeline Protective Devices as Required by NFPA 51

Released: December 4, 2019 (5th Edition)

The requirements of this standard cover pipeline protective devices (Pf) for use in fuel gas pipelines supplying equipment using oxygen or air downstream. Examples of such equipment are torches or burners that internally premix the oxygen (or air) and fuel gas as outlined in NFPA 51, Design and Installation of Oxygen-Fuel Gas Systems for Welding, Cutting, and Allied Processes.

This standard does not cover devices used in a system where a combustible mixture of fuel gas and oxygen or fuel gas and air is passed through the Pf device.

CGA E-14 – Standard for Maximum Leakage Rates (Gas Tightness) of Equipment Used for Welding, Cutting, and Allied Processes

Released: November 8, 2019 (3rd Edition)

This standard specifies the maximum leakage rates allowed for equipment used in welding, cutting, and allied processes. It applies only to individual components of a system that are connected to an upstream gas supply.

This information is a valuable tool used by designers and purchasers of gas handling equipment and/or systems.

CGA E-18 – Standard for Medical Gas Valve Integrated Pressure Regulators

Released: December 4, 2019 (3rd Edition)

This standard applies to medical gas valve integrated pressure regulators (VIPRs) that are mounted on refillable cylinders use in the administration of medical gases for the diagnosis of disease or other conditions, or in the cure, mitigation, treatment, or prevention of disease in humans or other animals. VIPRs covered by this standard are pressure preset and provided with a pressure outlet and/ or preset flow outlets.

Devices described in this standard shall comply with the U.S. FDA requirements in 21 CFR, and the Health Canada requirements described in the Medical Devices Regulations. Persons intending to design, manufacture, distribute, import, or sell medical devices as described by FDA and Health Canada shall comply to all regulations.

CGA G-1.2 – Standard for Acetylene Metering and Piping

Released: December 17, 2019 (5th Edition)

This publication is composed of three parts. The first part deals with properties of acetylene, the second part deals with pipeline acetylene transmission, and the third part deals with acetylene piping. In each part the included data are a compilation of practices, which have evolved through the years and have been demonstrated experimentally by test to be pertinent to the safe metering and transmission of acetylene.

The scope of this publication is limited to a maximum working pressure of 400 psi (2760 kPa). The data also covers acetylene of purity greater than 99.5% on a dry basis; no attempt has been made to include the use of mixtures of acetylene and other gases.

CGA G-5.4 – Standard for Hydrogen Piping Systems at User Locations

Released: November 5, 2019 (6th Edition)
Special Attribute: Harmonized publication

This standard describes the specifications and general principles recommended for piping systems for gaseous (Type I) or liquid (Type II) hydrogen. The standard applies to hydrogen piping in a supply system (to the source valve) and to customer piping from the source valve to the point of use. For the purposes of this standard, high pressure is defined as gaseous hydrogen at service pressures equal to or greater than 3000 psi (20 680 kPa).

The information in this standard is general in nature and is intended for designers, fabricators, installers, users, and maintainers of hydrogen piping systems as well as for safety personnel, fire departments, building inspectors, and emergency personnel.

CGA G-6 – Carbon Dioxide

Released: November 7, 2019 (8th Edition)
Special Attribute: Harmonized publication

The scope of this publication includes the physical and chemical properties, physiology, toxicity, hazards, production, regulations, storage, handling, transportation, and applications of carbon dioxide.

The purpose of this publication is to provide information on carbon dioxide. It should be useful to carbon dioxide users, producers, and distributors. Detailed information on the various aspects of carbon dioxide and its transportation and use can be found in sources listed in the reference section.

CGA G-6.7 – Safe Handling of Liquid Carbon Dioxide Containers That Have Lost Pressure

Released: November 25, 2019 (5th Edition)
Special Attribute: Harmonized publication

The scope of this publication is concerned primarily with the safe repressurization of stationary or transportable liquid carbon dioxide containers made of low alloy carbon steels and having a minimum design metal temperature (MDMT) greater than –110 °F (–78.9 °C ).

The purpose of this publication is to provide information to personnel to ensure that carbon dioxide containers that have lost pressure and could contain solid carbon dioxide (dry ice) or liquid carbon dioxide at temperatures less than the MDMT are safely repressurized before being returned to service.

CGA G-6.9 – Dry Ice

Released: November 13, 2019 (4th Edition)

This publication provides information on dry ice production, regulations, storage, handling, and applications, including direct food contact. This information is applicable to users, producers, and distributors.

CGA G-8.3 – Safe Practices for Storage and Handling of Nitrous Oxide

Released: November 5, 2019 (3rd Edition)
Special Attribute: Harmonized publication

This publication addresses the safe use in the industrial and medical gases industry for the design, engineering, construction, and operation of nitrous oxide, storage, and supply installations.

The design and installation requirements and recommendations included in this publication apply only to installations begun after the publication date. Some design and installation requirements shall be considered for existing installations where specified in this publication. These requirements shall be completed within 2 years of publication of this standard.

Operational requirements and recommendations should be considered for existing installations. This publication does not cover the manufacturing of nitrous oxide or quality control and analysis procedures. Refer to CGA G-8.4, Safe Practices for the Production of Nitrous Oxide from Ammonium Nitrate.

CGA M-6 – Standard for Analytical Method Validation

Released: November 7, 2019 (3rd Edition)

This publication describes the minimum requirements for validating noncompendial analytical test methods. It also describes a method for establishing the equivalency of alternate test methods.

This publication is intended to meet the requirements of:

  • Title 21 of the U.S. Code of Federal Regulations (21 CFR) Parts 211.165(e), 211.194(a)(2), and 820.72(a); and
  • Chapter 1225 (Validation of Compendial Methods) and portions of Chapter 621 (Gas Chromatography) in the USP–NF

CGA P-81 – Standard for Microbulk Liquid Nitrogen Supply Systems

Released: November 26, 2019 (1st Edition)

This publication provides a standard for microbulk liquid nitrogen supply systems. It contains minimum requirements and recommended practices for the design, construction, installation, operation, and maintenance of microbulk liquid nitrogen supply systems from the fill connection to the nitrogen discharge liquid and gas use outlet.

While this publication is to be used as a standard for user installations, final approval of the design, equipment, appurtenances, and installation rests with the authority having jurisdiction.

CGA PS-57 – CGA Position Statement on Factors for Determining Pressure Limitations for Various Equipment Types

Released: November 8, 2019 (1st Edition)

This publication addresses the factors that should be considered when determining the required pressure limitation for industrial equipment that will be attached to a CGA outlet connection.

CGA PS-59 – CGA Position Statement on Use of Concentration Ranges on Safety Data Sheets

Released: December 17, 2019 (1st Edition)

This publication provides CGA’s position on use of concentration ranges on safety data sheets (SDSs) for gas mixtures that do not have components that are trade secrets to ensure safety and full compliance with both the U.S. Occupational Safety and Health Administration’s (OSHA) Hazard Communication Standard and Health Canada’s (HC) Workplace Hazardous Materials Information System 2015.

CGA SA-33 – Safety Alert, Potential of Carbonated Beverage Systems to Create a Life-Threatening Environment

Released: November 8, 2019 (1st Edition)

This safety alert addresses improperly installed or poorly maintained carbonated beverage systems that have created hazardous concentrations of carbon dioxide (CO2) in improperly ventilated areas causing restaurant patrons, employees, and first responders to get sick or die.

CGA V-9 – Compressed Gas Association Standard for Compressed Gas Cylinder Valves

Released: November 15, 2019 (8th Edition)

This standard covers cylinder valve design, manufacture, and use including performance requirements such as operating temperature limits, pressure ranges, and flow capabilities. It also includes requirements such as materials, inlet and outlet connections, cleaning, qualification and production testing, maintenance, and reconditioning.

In addition, this standard includes guidelines and requirements for the design, material selection, testing, and marking of cylinder valve protection caps. This standard is intended for valves for compressed gases packaged in U.S. Department of Transportation (DOT) and Transport Canada (TC) cylinders.

This standard provides information on valve selection, valve use guidelines, and valve protection caps (see Appendix A, Appendix B, and Section 10, respectively).

CGA V-10 – High Pressure Gas Trailer Connections

Released: November 14, 2019 (7th Edition)

This publication provides guidelines and detailed drawings for six standard CGA connections for various high pressure gas trailer services. It defines the main outlet connection of the trailer unit only.