What are the Commerce rules governing the installation of mechanical refrigeration equipment?
Commerce’s administrative rules for refrigeration are found in Comm. 45. The rules are enforced by S&B inspectors and the department’s authorized agents. 3. What type of refrigeration systems require inspection and how is S&B notified of refrigeration systems requiring inspection? Answer: Systems using an A1/B1 refrigerant 50 ton above and A2/B2 and A3/B3 refrigerants 10 ton and above are required to be inspected. A contractor must submit the SBD-34 refrigeration registration form prior to installation of the system. The form is online as a PDF file. 4. What are the inspection requirements for installation of welded steel piping for refrigeration systems? Answer: For any system installed, modified or repaired using welded steel piping, a contractor must complete a SBD-5204 registration form, PDF file, and arrange an inspection at least five business days prior to the start of fabrication (all welded steel piping shall be fabricated to ANSI B31.5, 2001 std. pipe welders need welder qual
