IIAR BULLETIN 114 PDF

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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IIAR Bulletin #

In addition to the abbreviation, the use of a temperature or a pressure commonly associated with a particular line may further assist the operator. Naturally, anhydrous ammonia pipes were considered hazardous, and got yellow labels. After all, iixr last revision of the IIAR guideline was inand technology has changed here and there over the last 23 years! If not, now is a great time to fix bulleyin 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.

Wafer Seals and Mailing Seals. As a whole, though, the recommended label format has kept its shape.

All components of the refrigeration system, e. Standardized abbreviations are used, and each section is printed in a specific way.

Don’t Panic: Revised Guidelines for Ammonia Systems

Yellow pipe labels were used to mark any pipe containing a hazardous material. Therefore, on-site decisions will be necessary to provide the optimum pipe marking system.

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What Else is New? 141 states that all piping mains, headers and branches should be identified as to the physical state of the refrigerant, i. Over 10″ Legend Size: Over 8″ Legend Size: Revised Guidelines for Ammonia Systems. 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.

Directional arrow tape may also be applied around the full circumference of the pipe. Pressure in excess of 70 psig will be considered to be high pressure and printed in black letters on a red band. Reversible arrows for easy placement with any flow direction. The guideline specifically allows alternative color schemes, such as bulketin one used in the older version of the IIAR standard — or bulldtin other color scheme that works well for your facility.

Don’t Panic: Revised Guidelines for Ammonia Systems

Please bulletln JavaScript 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.

See full list below. Detachable arrow printed in black. The changes specified in the Revision of the guidelines are as follows: 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. Applying abbreviations of the names bukletin given to components or equipment in an ammonia refrigeration system will assist the operator in identifying components and tracing system piping.

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Why would the IIAR switch from yellow labels to orange ones? Abbreviating the names given to pipes in the ammonia refrigeration system will assist the operator in identifying and tracing the system.

The revision contains 28 abbreviations versus 17 contained in the Guidelines. Printed in black Physical State Section: This format was in place in the previous revision of the guideline, so many engineers are already familiar with it. Ammonia refrigeration is a powerful technology, but these large systems are complicated and can be dangerous. Since these requirements were also part of the old standard, your facility is probably already in the safe zone.