References >> IIAR Bulletin No. Guidelines for Identification of Ammonia Refrigeration Piping and System Components. Most of the other changes to IIAR Bulletin No. are fairly minor, fitting into the existing framework. They include preferred designations for several new types. Find the most up-to-date version of BULLETIN at Engineering

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As a whole, though, the recommended label format has kept its shape. Pipe Markers Valve Tags Nameplates. Since the hazards of ammonia relate to its toxicity, and 1144 its ability to catch fire, the labels should be orange. Yellow pipe labels were used to mark any pipe containing a hazardous material.

Visa, Mastercard, American Express, Discover. See full list below. Directional arrow tape may also be applied around the full circumference of the pipe.

Since these requirements were also part of the old standard, your facility is probably already in the safe zone. Naturally, anhydrous ammonia pipes were considered hazardous, and got yellow labels.

The system in place must be described in a clearly-visible posting. Do the changes to the standard mean that you need to replace all of your existing labels?

Pressure in excess of 70 psig will be considered to be high pressure and printed in black letters on a red band. Pressure equal to or less than 70 psig will be considered to be low pressure and printed in black on a green band.


Don’t Panic: Revised Guidelines for Ammonia Systems

They include preferred designations for several new types of equipment. Wrap-around, strap-on, and Bullletin stick-on markers for piping and components. In addition, component markers will be provided with a pressure level designation.

Detachable arrow printed in black.

IIAR Bulletin 114

The guideline specifically allows alternative color schemes, such as the one used in the older version of the IIAR standard — or any other color scheme that works well for your facility. Therefore, on-site decisions will be necessary to provide the optimum pipe marking system.

Component markers will bear the name of the equipment they identify, e. All Brimar products are manufactured in the USA. Directional arrows will be printed on the marker body.

Regardless of the piping color scheme selected, a legend or key to the meaning of the colors should be posted in a conspicuous area. The bullerin contains 28 abbreviations versus 17 contained in the Guidelines.

Revised Guidelines for Ammonia Systems. Over 10″ Legend Size: Considering these factors, the size of the pipe marker and lettering should be selected to provide quick and positive identification. Bulletin states that all piping mains, headers and branches should be identified as to the physical state of the refrigerant, i.


After all, the last revision of the IIAR guideline was inbulldtin technology has changed here and there over the last 23 years! Printed in black Physical State Section: There are two requirements for these alternate schemes: Why would the IIAR switch from buletin labels to orange ones?

All components of the refrigeration system, e. Inthough, the standard was revised.

IIAR Bulletin #

Pipe location, from a viewer’s standpoint, will be different on every installation. The following chart shows the recommended pipe marker letter height and marker size based on the outside pipe diameter of the pipe to be identified and the distance between the viewer and the pipe.

That standard, created by the American National Standards Institute ANSIrecommended a color code for pipe labels that indicated the type of contents with a color. What Else is New? The reference chart, legend, or key should be made of durable material that will remain legible. The “self-adhesive” type of marker will be printed with one directional detachable arrows. If not, now is a great time to fix it!