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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What Else is New? Reversible arrows for easy placement with any flow direction. A reference chart that fully explains the ammonia refrigeration piping and component identification bupletin, including the approved abbreviations, should be placed in areas that are conspicuous to operating personnel.

Detachable arrow printed in black.

Don’t Panic: Revised Guidelines for Ammonia Systems

There are two requirements for these alternate schemes: See full list below. The “self-adhesive” type of marker will be printed with one directional detachable arrows. Bulletin states that all piping mains, headers and branches should be identified as to the physical state of the refrigerant, i. They include preferred designations for several new types of equipment.

Revised Guidelines for Ammonia Systems. Component markers will bear the name of the equipment they identify, e. 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.


IIAR Bulletin 114

There are no items in your cart. Orange is the New Yellow Iizr the previous version of the Bulletin used a design that was mostly yellow, the current labels are mostly orange.

Over 10″ Legend Size: Do the changes to the standard mean that you need to replace all of your existing labels? The new version was adopted completely by ANSI.

Pressure equal to or less than 70 psig will be considered to be low pressure and printed in black on a green band. Pressure in excess of 70 psig will be considered to be high pressure and printed in black letters on a red band. Yellow pipe labels were used to mark any pipe containing a hazardous material. The same system must used across the entire facility.

Therefore, on-site decisions will be necessary to provide the optimum pipe marking system. 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.

The reference chart, legend, or key should be made of durable material bullletin will remain legible. Abbreviating the names given to pipes in the ammonia refrigeration system will assist the operator in identifying and tracing the system.

Don’t Panic: Revised Guidelines for Ammonia Systems

The following chart shows the recommended pipe marker letter height and marker size based on the outside pipe buloetin of the pipe to be identified and the distance between the viewer bullletin the pipe. Standardized abbreviations are used, and each section is printed in a specific way. Pipe location, from a viewer’s standpoint, will be different on every installation. Since these requirements were also part of the old standard, your facility is probably already in the safe zone.


The revision contains 28 abbreviations versus 17 contained in the Guidelines.

IIAR Bulletin #

Since the hazards of ammonia relate to its toxicity, and not its ability to catch fire, the labels should be orange. Why would the IIAR switch from yellow labels to orange ones? There are two requirements for these alternate schemes:. 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.

All components of the refrigeration system, e. View Our Full Product Index.

After all, the last revision of the IIAR guideline was inand technology has changed here and there over the last 23 years!