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The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) has announced revisions to Guideline N, regarding tank colours and Guideline Q regarding recycling of refrigerant cylinders.  AHRI’s Guideline N, Assignment of Refrigerant Container Colors, now specifies that all refrigerant containers should have one uniform paint color, grey RAL 7044, and that the previous individually assigned container paint colors should be transitioned to the new standard color by 2020. With the increasing number of refrigerants approved for use, there was concern over the potential misidentification and confusion.

GUIDELINE N CHANGE

ALL REFRIGERANT CONTAINERS NOW GREY IN COLOUR

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LABELLING STILL IN FORCE

The U.S. Code of Federal Regulations (CFR) Title 49 for hazmat transportation regulations, and CFR Title 29 for occupational safety and health regulations, requires that all hazardous material containers, including refrigerant cylinders and drums, be properly labeled to clearly identify the contents. The label should now serve as the primary means of positively identifying the type of refrigerant in a cylinder or drum.

FLAMMABLE STILL RED

Flammable refrigerants continue to include a red band on the top of the container.

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GUIDELINE Q UPDATE

REFRIGERANT CONTAINER RECYCLING

AHRI has also issued an update to Guideline Q, Content Recovery and Proper Recycling of Refrigerant Cylinders. It now includes best practices for end-of-life recycling of flammable refrigerant containersthat are different from those for non-flammable refrigerants. They involve using a non-sparking pick to prepare the container for recycling.

To review and download standards and guidelines free of charge, visit AHRI’s website at www.ahrinet.org, or contact Marcus Thaw at mthaw@ahrinet.org for more information.