Ammonia pipe marking mistakes can kill. The accidental release of ammonia can pose serious risk to human life so it's vital that pipes are correctly marked. The International Institute of Ammonia Refrigeration (IIAR) – requires thorough and specific labeling of all pipes and ducts that contain ammonia-based refrigerants. Ammonia presents unique workplace hazards and having additional information about the pressure and liquid/vapor state of the ammonia is important.
Each label is required to include the following components:
Abbreviation for ammonia system components
The physical state – either liquid, vapor, or both
The marker body containing the word “ammonia”
The pressure level – high or low
The flow direction
Ammonia is considered a high health hazard because it is corrosive to the skin, eyes, and lungs. Exposure to just 300 parts per million (ppm) in the air is immediately dangerous to life and health. Ammonia is also flammable at concentrations of approximately 15% to 28% by volume in air. When mixed with lubricating oils, its flammable concentration range is increased. It can explode if released in an enclosed space with a source of ignition present, or if a vessel containing anhydrous ammonia is exposed to fire.
Graphic Products has created an Ammonia Pipe Marking Guide, a handy wall chart which provides a quick reference when and where workers need it. Ammonia pipe marking has many aspects to learn and remember, but this full-color guide puts the essentials in one place. Find abbreviations, IIAR color schemes, size and location of markers, and much more. Make copies to hand out as a training resource.
Graphic Products is an innovative leader, providing solutions for safety and visual communication since 1970. The company's full line of safety products, services, and DuraLabel line of industrial label and sign printers are designed for the modern workforce. Graphic Products leads the industry with safety training materials, educational resources, and up-to-date news and compliance information on topics like arc flash, chemical labeling, and pipe marking.