Published by on January 4, 2020
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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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In either case, the directional arrow or arrowhead will be BLACK in color and proportionate in size to the marker. The new version was adopted completely by ANSI.

Revised Guidelines for Ammonia Systems. A reference chart that fully explains the ammonia refrigeration piping and component identification markers, including the approved abbreviations, should be placed in areas that are conspicuous to operating personnel.

In addition, component markers will be provided with a pressure level designation. What Else is New?

Don’t Panic: Revised Guidelines for Ammonia Systems

Detachable arrow printed in black. Since these requirements were also part of the old standard, your facility is probably already in the safe zone. All components of the refrigeration system, e. Existing schemes for identification are considered acceptable.

Printed in black Physical State Section: Pipe markers iixr accordance with Bulletinare designed to identify the refrigerant contained within that piping segment i. The same system must used across the entire facility. As a whole, though, the recommended label format has kept its bullftin. They include preferred designations for several new types of equipment. While the previous version of the Bulletin used a design that was mostly yellow, the current labels are mostly orange.

  ASTM D3935 PDF

IIAR Bulletin #114

Pipe location, from a viewer’s standpoint, will be different on every installation. Directional arrows will be printed on the marker body.

Looking for high-quality, standards-compliant ammonia markers? Please enable JavaScript in your browser to experience all the custom features of our site, including the ability to make a purchase. Do the changes to the standard mean that you need to replace all of your existing labels? Anhydrous ammonia is not the sort of stuff you want to go swimming in! Over 8″ Legend Iiad In those areas where state codes and government regulations are not conflicted, ammonia refrigerated facilities have the option to implement a company documented piping color scheme.

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

Component markers will bear the name of the equipment they identify, e. Orange is the New Yellow While the previous version of the Bulletin used a design that was mostly yellow, the current labels are mostly orange.

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. The guideline specifically allows alternative color schemes, such as the one used in the older version bluletin the IIAR standard — or any other color scheme that works well for your facility.

Regardless of the piping color scheme selected, a legend or key to the meaning of the colors should be posted in a conspicuous area. Standardized abbreviations are used, and each section is printed in a specific way. Applying abbreviations of the names commonly bulleetin to components or equipment in an ammonia refrigeration system will assist the operator in identifying components and tracing system piping. Wrap-around, strap-on, and EZ stick-on markers for piping and components.


Naturally, anhydrous ammonia pipes were considered hazardous, and got yellow labels. Bulletin states that all piping mains, headers and branches should be identified as to the physical state of the refrigerant, i.

There are no items in your cart. Bullrtin refrigeration is a powerful technology, but these large systems are complicated and can be dangerous. Directional arrow tape may also be applied around the full circumference of the pipe. The system in place must be described in ioar clearly-visible posting. Abbreviating the names given bylletin pipes in the ammonia refrigeration system will assist the operator in identifying and tracing the system.

This format was bulleton place in the previous revision of the guideline, so many engineers are already familiar with it. Over 10″ Legend Size: That standard, created by the American National Standards Institute ANSIrecommended a color code for pipe labels that indicated the type of contents oiar a color. Inthough, the standard was revised.

Yellow pipe labels were used to mark any pipe containing a hazardous material. The changes specified in the Revision of the guidelines are as follows: