Revised IIAR Bulletin Identification of Ammonia Piping. & System Components Marking Services, Inc. provides turnkey pipe labeling, from. 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. 20 Jan Find the most up-to-date version of BULLETIN at Engineering

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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 bhlletin the distance between the viewer and the pipe.

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. Over 10″ Legend Size: In bukletin case, the directional arrow or arrowhead will be BLACK in color and proportionate in size to the marker.

The reference chart, legend, or key should be made of durable material that will remain legible. 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.

Directional arrow tape may also be applied around the full circumference buletin the pipe.

IIAR Bulletin #114

Regardless of the piping color scheme selected, a legend or key to the meaning of the colors should be posted in a conspicuous area. Visa, Mastercard, American Express, Discover. Abbreviating the names given to pipes in the ammonia refrigeration system will assist the operator in identifying 141 tracing the system.


Inthough, the standard was revised. The revision contains 28 abbreviations versus 17 contained in the Guidelines. All components of the refrigeration system, e. The new version was adopted completely by ANSI.

Naturally, anhydrous ammonia pipes were considered hazardous, and got yellow labels. Reversible arrows for easy placement with any flow direction. See full list below. View Our Full Product Index. Over 8″ Legend Iar Existing schemes for identification bullegin considered acceptable. In addition to the abbreviation, the use of a temperature or a pressure commonly associated with a particular line may further assist the operator.

Please enable 1114 in your browser to experience all the custom features of our site, including the ability to make a purchase. The system in place must be described in a clearly-visible posting. Pipe Markers Valve Tags Nameplates. In addition, component markers will be provided with a pressure level designation.

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. While the previous version of the Bulletin used a design that was mostly yellow, the current labels are mostly orange. Detachable arrow printed in black. Pressure in excess of 70 psig will be considered to be high pressure and printed in black letters on a red band.

Bulletin states that all piping mains, headers and branches should be identified as to the physical state of the refrigerant, i. That standard, created by the American National Standards Institute ANSIrecommended a color code for pipe bullein that indicated the type of contents with a color.


Don’t Panic: Revised Guidelines for Ammonia Systems

In those areas where state codes and government regulations are not conflicted, ammonia billetin facilities have the option to implement a company documented piping color scheme. The changes specified in the Revision of the guidelines are as follows: Why would the IIAR switch from yellow labels to orange ones? Wafer Seals and Mailing Seals. Anhydrous ammonia is not the sort of stuff you want to go swimming in!

They include preferred designations for several new types of equipment. If not, now is a great time to fix it! This format was in place in the previous revision of the guideline, so many engineers are already familiar with it.

Looking for high-quality, standards-compliant ammonia markers?

Yellow pipe labels were used to mark any pipe containing a hazardous ublletin. Therefore, on-site decisions will be necessary to provide the optimum pipe marking system. There are no items in your cart.

Do the changes to the standard mean that you need to replace all of your existing labels? As a whole, though, the recommended label format has kept its shape.