CGA’s January & February 2021 Safety Publications (New Releases & Revisions)

March 18 2021

During January and February 2021, the Compressed Gas Association (CGA) issued the following new and revised safety standards and position statements:

CGA E-3, Standard for Low Pressure Pipeline Station Outlet/Regulator Inlet Connections

Released: February 17, 2021 (5th Edition)
Special Attribute: Referenced by NFPA (National Fire Protection Association)

This standard specifies the connections on removable pipeline regulators and station outlets used in the welding, cutting, and allied processes where the pipeline pressure does not exceed 200 psi (1380 kPa). Removable connections are those that are commonly and readily engaged or disengaged in routine use and service.

All new pipeline installations shall incorporate the connections specified in Section 5 of this standard.

CGA E-3 does not prejudice the continued use of acetylene and LPG type connections in service or in inventory at a manufacturer’s or user’s site that were manufactured before the effective date of this standard, provided the connections are identifiable with the appropriate CGA markings.

The effective date of this standard is three years from the date of the publication of this edition, which was February 17, 2021. New acetylene and LPG pipeline installations on and after the effective date of this standard shall be in compliance with this standard.

CGA E-9, Standard for Flexible Stainless Steel Braided Hoses Used in Compressed Gas Service

Released: February 19, 2021 (6th Edition)

This publication provides a minimum standard for flexible stainless steel braided hoses with the following inner core:

  • ethylene tetrafluoroethylene (ETFE)
  • polytetrafluoroethylene (PTFE)
  • corrugated stainless steel

These hoses have a nominal inside diameter (ID) of 0.25 in (6.4 mm) or less and shall have a maximum allowable working pressure (MAWP) of at least 3000 psi (20 680 kPa) at 70 °F (21.1 °C). These flexible hoses are sometimes referred to as pigtails.

CGA E-11, Standard for Stationary Compressed Gas Cylinder Discharging Manifolds with Working Pressures up to 3000 psi

Released: February 10, 2021 (4th Edition)

These requirements are for stationary cylinder discharging manifolds for compressed gases for industrial use. Manifolds are used to connect compressed gas cylinders together to supply a distribution system with a particular gas at a selected distribution pressure. The requirements cover manifolds complete to the point where they connect to a distribution system.

Three basic gas groupings are covered:

  • Fuel gases (grouped as acetylene, liquefied fuel gases, and nonliquefied fuel gases) –maximum 3000 psi at 70 °F (20 684 kPa at 21.1 °C)
  • Oxygen and air — maximum 3000 psi at 70 °F (20 684 kPa at 21.1 °C)
  • Carbon dioxide, nitrogen, and inert gases — maximum 3000 psi at 70 °F (20 684 kPa at 21.1 °C)

CGA E-17, Standard for Hose Line Quick-Connect Couplings for Welding, Cutting, and Allied Processes

Released: January 15, 2021 (3rd Edition)

CGA has long recognized the need to promote safety in the use of gases and equipment for welding, cutting, and allied processes. Hose line quick-connect couplings are commonly used in these processes as an alternative to the traditional threaded hose line connections.

This publication applies to quick-connect couplings with integral CGA E-1 or ISO/TR 28821, connections used between regulators, torches and/or other gas welding equipment, sometimes referred to as hose-type quick-connects, for pressures up to 200 psi (1380 kPa). This publication covers requirements and considerations for design and maintenance of indexed pin-type noninterchangeable welding quick-action couplings. It is the intention of this publication to provide some guidance because of the various designs that exist.

CGA G-2, Anhydrous Ammonia

Released: February 23, 2021 (9th Edition)

The information in this publication is intended for use by ammonia shippers, carriers, distributors, consumers, equipment designers or installers, safety administrators, and others desiring introductory knowledge of the subject. Anyone requiring more detailed or specialized information should consult with an ammonia supplier.

The purpose of this publication is to provide information regarding properties, production, shipping, storage, handling, and use of ammonia. It also describes regulatory requirements in the United States and in Canada as well as safety and security practices. This information is intended to complement, but not to supplant national, state, provincial, municipal, and insurance company codes or safety requirements.

CGA P-8.10, Industrial Gas Pipeline Integrity Management

Released: February 19, 2021 (1st Edition)

This publication covers the integrity of industrial gas transmission pipelines for gaseous nitrogen, oxygen, argon, helium, hydrogen, carbon monoxide, and Syngas. This publication addresses the integrity of industrial gas pipelines in the public domain including maintenance and operation as appropriate.

CGA P-8.10 covers active or in-service pipelines. Out of service or abandoned pipelines are not covered in this publication. However, the information contained in this publication may be applicable to those pipelines.

CGA P-31, Liquid Oxygen, Nitrogen, and Argon Cryogenic Tanker Loading Systems

Released: February 2, 2021 (4th Edition)

This publication covers cryogenic liquid oxygen, liquid nitrogen, and liquid argon tanker loading systems for loading by gravity, pressure, or pump filling. It covers the design of the tanker loading systems and the period of time and activities between when a tanker enters the filling area and when it departs from the filling area.

CGA P-31 focuses on the factors affecting the transfer of oxygen, nitrogen, and argon as cryogenic liquids between a source and appropriately designed tankers used for the transportation of these products. The source can be either a storage tank or directly from the plant.

This publication is written for designers, owners, and operators of cryogenic liquid tanker loading systems.

CGA P-63, Disposal of Gases

Released: February 17, 2021 (2nd Edition)

This publication recommends disposal methods for more than 140 gases and their mixtures and provides safe practices for the disposal of their containers when unserviceable. This publication reflects the concern of the industrial gases industry to ensure that when the need arises for disposal of gases and mixtures, standards of health, safety, and environmental quality continue to be maintained. Only environmentally acceptable methods are proposed.

The principles, recommendations, and requirements in CGA P-63 may be applied to both routine and emergency disposal operations; however, emergency disposal operations may dictate special or one of a kind procedures.

CGA PS-1, CGA Position Statement on Odorizing Atmospheric Gases (Oxygen, Nitrogen, and Argon)

Released: February 10, 2021 (5th Edition)

Describes CGA’s position on whether or not odorants should be used in atmospheric gases to allow their presence to be detected.

CGA V-7, Standard Method of Determining Cylinder Valve Outlet Connections for Industrial Gas Mixtures

Released: February 10, 2021 (7th Edition)

This standard applies to the selection of a suitable cylinder valve outlet connection for industrial, specialty, and semiconductor gas mixtures for pressures up to 3000 psi at 70 °F (20 680 kPa at 21.1 °C).

CGA V-7 applies to cylinders filled for individual use, cylinders filled individually for the purpose of assembling into a cylinder bundle, and for all cylinder bundle manifold outlet connections.