What type of pipe is used for ammonia?

Steel piping, fittings, and valves of the proper pressure rating are suitable for ammonia gas and liquid. Ammonia piping should conform to ASME Standard B31.

What color should ammonia pipes be painted?

Safety Orange
See full list below. Color changes: The background color for Ammonia pipe markers shall be Safety Orange, following the color guidelines by ANSI Z535. 1 Safety Color Code. Color Changes: The color for the LIQUID physical state has also changed, it used to be Orange and is now Yellow.

What is PSM ammonia?

Process Safety Management (PSM) is a program that was created by OSHA, then adopted by the EPA, for facilities that contain more than 10,000 pounds of ammonia on site. OSHA mandated facilities put in place the processes and procedures regarding how to “Manage the Process Safely”.

What does Iiar stand for?


Acronym Definition
IIAR International Institute of Ammonia Refrigeration
IIAR Institute of Industry Analyst Relations (est. 2006; MIddlesex, UK)
IIAR Illinois Institute for Addiction Recovery (est. 1979)
IIAR International, Intergovernmental and Aboriginal Relations (Edmonton, Alberta, Canada)

Is ammonia a good refrigerant?

Ammonia is an efficient and popular refrigerant due to its superior thermodynamic properties and low cost. Ammonia is environmentally benign, having zero GWP and zero ODP. However, ammonia does exhibit a unique refrigerant characteristic due to its irritating odor.

What color is ammonia liquid?

Ammonia is a colourless gas with a characteristically pungent smell. It is lighter than air, its density being 0.589 times that of air. It is easily liquefied due to the strong hydrogen bonding between molecules; the liquid boils at −33.3 °C (−27.94 °F), and freezes to white crystals at −77.7 °C (−107.86 °F).

What happens in an ammonia leak?

Ammonia is corrosive and exposure will result in a chemical-type burn. Since ammonia is extremely hygroscopic, it readily migrates to moist areas of the body such as eyes, nose, throat, and moist skin areas. Exposure to liquid ammonia will also result in frostbite since its temperature at atmospheric pressure is –28ºF.

How do I get certified in ammonia?

Qualifications needed to become an ammonia refrigeration technician include at least three years of experience in industrial maintenance and experience with ammonia refrigeration best practices, including policies required by OSHA and the EPA.

How many designation sections are there to an ammonia pipe label?

In addition to five-part labels, each piece of equipment in an ammonia refrigeration system may also be labeled. This label consists of two sections: Name of the system component: Identify the equipment name with its abbreviation.

What are the requirements for anhydrous ammonia piping in Minnesota?

Minnesota Rules, Part 1513.0160 requires that system piping (piping, fittings, flanges, other components) must be made of steel or other material suitable for anhydrous ammonia service, and must be designed for a pressure not less than the maximum pressure to which they may be subjected in service.

How much does a ton of ammonia cost?

This P&ID is intended for systems which have the low side operating at positive pressures. If the low side pressure is less than about 4 -5 psig then an oil pot must be added to the low temperature accumulator to safely drain oil. Expected charge for this type of system is in the range of 6.5 to 7 lbs of ammonia per ton of refrigeration.

Who is responsible for compliance with ammonia regulations?

The owner of an ammonia refrigeration system is responsible for compliance with all regulations and must not depend on these guidelines as an all-inclusive reference for regulatory requirements applicable to ammonia refrigeration plants. 3 Scope These guidelines apply to vapor compression refrigeration systems using ammonia as a refrigerant.

What is the scope of the ammonia standard?

Scope . This standard is intended to apply to the design, construction, location, installation, and operation of anhydrous ammonia systems including refrigerated ammonia storage systems. Ammonia manufacturing plants. Refrigeration plants where ammonia is used solely as a refrigerant. Definitions. As used in this section. Appurtenances.