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These chapters of Minnesota Rules govern the design, installation, alteration, repair, removal, operation, and maintenance of various types of boilers and high pressure piping equipment. Minnesota's boiler code consists of the following: American Society of Mechanical Engineers Boiler and Pressure Vessel Code, National Board Inspection Code, various standards from the American Society of Mechanical Engineers (ASME), and the amendments in Chapter 5225 in parts or Entire Chapter 5225 . The documents are published by the American Society of Mechanical Engineers and the National Board Inspection Code is published by the National Board of Boiler and Pressure Vessel Inspectors.

First inspections and permits

Online boiler installation permits are on-the-way

March 2014 -- DLI’s Boiler Inspection Division is creating an online permit and notification system for new boiler installations. As part of the new system, installing contractors will visit DLI’s website and input information about the boiler and its location. Once completed, the installer and state boiler inspector will receive email notice about the installation allowing the contractor to contact the boiler inspector to set up the first inspection.

Will I need a permit?
Installation permits will be required for individual boilers or a boiler connected to a common circulation manifold if the individual or combined BTU input exceeds: 100,000 BTUs for steam boilers, 500,000 BTUs for hot water supply boilers or 750,000 BTUs for hot water heating boilers. More information will be available here as the new system is created.


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