What You Should Know About Pipe Markers

Do you know why it’s important to have the correct pipe markings in your facility? It helps your employees and independent contractors identify the contents of various pipes in your facility during maintenance. Pipe markers aid in locating specific pipes for repairs or upgrade, and at the same time minimizes the risk of accidents and injuries. But did you also know that it’s not enough to have pipe markers installed in your facility? You should follow strict regulations when using pipe identification tools and valve tags.

The most commonly followed pipe marking standard is ANSI/ASME A13.1-2007. This standard talks about two ways of identifying the different contents, colours, sizes and placement of specific pipe markers.

  •  Primary Identification – This sort of pipe identification uses legends and directional flow arrows for identifying the contents of pipes. For more information on size and placement of arrow markers check the chart below.
  • Secondary Identification – This method uses a specific colour code to help identify specific substances, for example: Yellow/Black is used for flammable fluids and Green/White is used for various water types including potable, boiler feed and cooling water.

This colour-coding method has seen significant changes over the years with the addition of the Brown/White colour code to identify combustible fluids and the Orange/Black code for corrosive or toxic fluids. It is recommended that you consult the Material Safety Data Sheets to help you determine the risk factor of each substance which in turn will help you mark each pipe accordingly. For a more detailed description about pipe marker regulations, please refer to the chart below.

ANSI Pipe Marker Regulations - Inforgraphic



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