This is the thirteenth edition of CSA B52, Mechanical refrigeration code. It supersedes the previous editions published in 2018, 2013, 2005, 1999, 1995, 1992, 1991, 1983, 1977, 1965, 1951, and 1939.
The thirteenth edition of this Standard provides the minimum requirements for the design, construction, installation, inspection, and maintenance of mechanical refrigeration systems, and is complemented by the practical implementation guidance CSA B52 Handbook, helping to minimize the risk of personal injury. This Standard applies to all refrigeration systems installed, whether in new or existing premises, to systems that undergo a substitution of refrigerant, and to parts that are replaced in or added to the system.