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Yellow (with black text) indicates the pipe contains materials that are inherently hazardous. Examples would be corrosive, caustic, explosive or flammable materials. Radioactive, toxic or any material that creates a toxic gas are also classified as inherently hazardous. In addition, if the contents of the pipe are under extreme pressure or temperature, they are considered to be inherently hazardous. Green (with white text) identifies a pipe as carrying a liquid, or liquid mixture, that is a low hazard material. Blue (with white text) identifies a pipe carrying a low hazard gas or gaseous mixture. Red (with white text) identifies the pipe as being used for materials for fire suppression. This includes materials such as carbon dioxide, Halon, foam and sprinkler water. If you are using a label printer to make your pipe markers, you need to load the printer with the proper color tape for the type of pipe label you'll be printing. Preprinted pipe markers may be purchased with the appropriate background color. If you do not have the correct color label available when it is needed, DO NOT substitute a label with a different color. Always use the correct color label. Pipe Marking Online Tutorial - Other Topics Pipe Marker Color |
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