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

August 26, 2021

During July 2021, the Compressed Gas Association (CGA) issued the following new and revised safety standards and guidelines:

CGA F-4, Guideline for Analytical Validations for Food Gases

Released: July 19, 2021 (1st Edition)

This safety publication is intended to provide guidance for companies collecting method validation data for food gas monograph submission or updates. It also provides guidance for companies collecting data to support the use of alternate test methods to those in the compendia or those collecting data to support the use of methods to test for gases not listed in the Food Chemical Codex (FCC) compendia.

This publication is not intended to require validation of a food gas method that does not have an FCC monograph.

CGA F-4 is intended to meet the requirements of General Information/Validation of Food Chemical Codex Methods in the FCC.

CGA G-1, Acetylene

Released: July 16, 2021 (14th Edition)
Special Attribute: Referenced by NFPA (National Fire Protection Association)

This safety publication contains information on the properties, manufacture, transportation, storage, handling, and use of acetylene. CGA G-1 also includes information on marking and labeling, refilling, storing, and using acetylene cylinders, as well as handling a leaking acetylene cylinder.

CGA G-1.12, Mechanical Integrity of Generator Systems in Acetylene Plants

Released: July 8, 2021 (1st Edition)
Special Attribute: Harmonized publication

This publication is intended for designers, manufacturers, and operators within the acetylene industry. Its purpose is to give guidance on development of mechanical integrity programs for acetylene generators. The user of this publication should review the model mechanical integrity plan and create a site-specific mechanical integrity plan.

CGA G-1.12 gives guidance on the mechanical integrity (MI) of acetylene generator systems that use calcium carbide added to water, known as wet generation. An MI program is intended to ensure that the generator system components do not fail in a way that causes or enhances a catastrophic release of highly hazardous chemicals.

This safety publication identifies potential failure scenarios and consequences for acetylene generator components. For each failure scenario whose consequence is a loss of containment, the publication identifies an inspection method, a minimum frequency of inspection, and the acceptance criteria for the inspection method.

CGA P-35, Guideline for Unloading Tankers of Cryogenic Oxygen, Nitrogen, and Argon

Released: July 16, 2021 (2nd Edition)

CGA P-35 was developed to provide general safety and unloading guidelines to be used by service providers and providers of drivers and equipment to the compressed gas industry for the distribution of cryogenic liquids by bulk cargo tank.

These guidelines assist drivers when there are physical differences between the cargo tanks, pumping systems, and customer storage tanks that the driver will operate during the unloading of cryogenic liquids.

CGA P-38, Guideline for Devalving Cylinders

Released: July 16, 2021 (4th Edition)

Cylinders are devalved for many purposes such as inspection, requalification, cylinder cleaning, change of service, installation of a new valve, or preparation for filling. Near misses, injuries, and fatalities have occurred during the devalving of cylinders that were pressurized.

Uncontrolled release of gases to the environment, worker health and safety concerns from gas exposure, fires, and the catastrophic sudden release of energy have all been associated with devalving operations.

This publication identifies devalving hazards and provides guidance to prevent incidents.

CGA P-91, Plant Integrity Management

Released: July 14, 2021 (1st Edition)
Special Attribute: Harmonized publication

This publication gives general guidance on integrity management of process plants including, but not limited to, air separation plants, HYCO plants, cylinder filling plants, and carbon dioxide, acetylene, and nitrous oxide plants. The goal is to keep hazardous fluids and energy contained in order to maintain safe working conditions for personnel and prevent unacceptable environmental releases.

The information contained in this publication applies to both new and existing equipment. Integrity management starts when the equipment is first put into service and continues throughout its lifecycle.

This includes:

• piping
• static and rotating equipment
• equipment civil structures and foundations
• electrical, control, and instrumentation equipment
• pressure vessels
• combinations thereof