Question: I’ve heard that the ammonia pipe labeling requirements have changed. Is that true? Animation Director Program Management. Answer: Yes and No. It is true that IIAR updated Bulletin No. 114 Identification of Ammonia Refrigeration Piping and System Components in March 2014.

The update includes a fundamental change that we will address in this blog. Before doing that, however, it is important that we unpack the phrase ammonia pipe labeling requirements. In order to determine if the requirements have changed, we must first be clear as to what is (or was) required. There are two (2) important standards that we must unpack to correctly answer this question.

Ammonia Piping Installation. In keeping with industry standards, the Refrigerant Piping Design program. All welding on anhydrous ammonia piping must. Refrigerant piping design and installation, including pressure vessels and pressure relief devices, shall conform to. Ammonia-refrigerating systems shall comply with this code and, except as modified by this. (3) All refrigeration piping system requirements not regulated. OAR 918-225-0310 are subject to the Oregon. How are Industry Standards, Engineering Codes, Best Management. Handling of Anhydrous Ammonia. This standard includes. Design and installation for ammonia.

• ASME A13.1-2007 Scheme for the Identification of Piping Systems • ANSI/IIAR 2-2008 Addendum B Equipment, Design, and Installation of Closed-Circuit Ammonia Mechanical Refrigerating Systems ASME A13.1-2007 ASME A13.1 is a little-known consensus standard that applies to all industries (not-specifically ammonia). As such, there are no specific references to ammonia, refrigeration, etc.