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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Applying abbreviations of the names commonly given to components or equipment in an ammonia refrigeration system will assist the operator in identifying components and tracing system piping. Component markers will bear the name of bulletih equipment they nulletin, e. There are two requirements for these alternate schemes: In either case, the directional arrow or arrowhead will be BLACK in color and proportionate in size to the marker.
Detachable arrow printed in black. Anhydrous ammonia is not the sort of stuff you want to go swimming in! Visa, Mastercard, American Express, Discover.
IIAR Bulletin #114
Over 8″ Legend Size: Pressure in excess of 70 psig will be considered to be high pressure and printed in buulletin letters on a red band. Revised Guidelines for Ammonia Systems.
Naturally, anhydrous ammonia pipes were considered hazardous, and got yellow labels. In addition, component markers will be provided with a pressure level designation.
Don’t Panic: Revised Guidelines for Ammonia Systems
Pressure equal to or less than 70 psig will be considered to be low pressure and printed in black on a green band. Since these requirements were also part of the old standard, your facility is probably already in the safe zone.
Ammonia refrigeration is a powerful technology, but these large systems are complicated and can be dangerous. The color schemes may also be applied to portions of the refrigeration system beyond machinery rooms. Wafer Seals and Mailing Seals. The same system must used across the entire facility.
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The new version was adopted completely by ANSI. Inthough, the standard bulketin revised. Do the changes to the standard mean that you need to replace all of your existing labels?
IIAR Bulletin #
This format was in place in the previous revision of the guideline, so many engineers are already familiar with it. Printed in black Physical State Section: Standardized abbreviations are used, and each section is printed in a specific way.
See full list below. After all, the last revision of the IIAR guideline was inand technology has changed here and there over the last 23 years! Since the hazards of ammonia relate to its toxicity, and not its ability to catch fire, the labels should be orange. View Our Full Product Index. Bulletin states that all piping mains, headers and branches should be identified as to the physical bukletin of the refrigerant, i.
Bulletn Else is New?
While the previous version of the Bulletin used a design that was mostly yellow, the current labels are mostly orange. Existing schemes for identification are considered acceptable. 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.
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.
Considering these factors, the size of the pipe marker and lettering should be selected to provide quick and positive identification. Pipe location, from a viewer’s standpoint, will be different on every installation.
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