However, CSA B52 requires that refrigerant piping installations comply with a different code, ASME B31.5. In Canada, CSA B52 is usually the code that is used for mechanical refrigeration installations. One of the ways that we make sure piping is safe is by following engineering and design standards and codes. As CO2 systems become more popular and as our industry continues to acknowledge the seriousness of leaks, from an environmental perspective with Halocarbons and from a safety perspective with ammonia, reducing failures is becoming more important. Industrial and ammonia mechanics are familiar with carbon and stainless steel since ammonia reacts with copper, making it an unsuitable material to use. We have discussed some of the issues and challenges regarding piping in previous articles and will drill into a few more topics here.įor most refrigeration mechanics and technicians, ACR copper tubing is the only piping material encountered. Refrigerant piping is obviously a very important component of refrigeration systems.

Failed insulation is indicated by significant frost build-up on the freezer piping.

Csa b52