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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Pipe Markers Valve Tags Nameplates.
The system in place must be described in a clearly-visible posting. Existing schemes for identification are considered acceptable. The following chart shows the recommended pipe marker letter height and bulpetin size based on the outside pipe diameter of the pipe to be identified and the distance between the viewer and the pipe.
Printed in black Physical State Section: See full list below. Ammonia refrigeration is a powerful technology, but these large systems are complicated and can be dangerous. 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.
Pressure equal to or less than 70 psig will be jiar to be low pressure and printed in black on a green band. In either case, the directional arrow or arrowhead will be BLACK in color and proportionate in size to the marker.
Bulletin states that all piping mains, headers and branches should be identified as to the physical state of the refrigerant, i. There are two requirements for these alternate schemes: Regardless of the piping color scheme selected, a legend or key to the meaning of the colors should be posted in a conspicuous area.
What Else is New? Pipe location, from a viewer’s standpoint, will be different on every installation. Revised Guidelines for Ammonia Systems.
Don’t Panic: Revised Guidelines for Ammonia Systems
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. Naturally, anhydrous ammonia pipes were considered hazardous, and got yellow labels. While the previous version of the Bulletin used a design that was mostly yellow, the current labels are mostly orange. The reference chart, legend, or key should be made of durable material that will remain legible.
Why would the IIAR switch from yellow labels to orange ones? All Brimar products are manufactured in the USA.
Abbreviating the names given to pipes in the ammonia bulleyin system will assist the operator in identifying and tracing the system. 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.
IIAR Bulletin #
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.
Directional arrows will be printed on the marker body. The “self-adhesive” type of marker will be printed with one directional detachable arrows. The color schemes may also be applied to portions of the refrigeration system beyond machinery rooms.
IIAR Bulletin #114
Wrap-around, strap-on, and EZ stick-on markers for piping and components. Anhydrous ammonia is not the sort of bullletin you want to go swimming in!
There are two requirements for these alternate schemes:.