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    Subdivision 1. Scope. For the purpose of sections 326.46 to 326.521, the following terms
have the meanings given them.
    Subd. 2. High pressure piping. "High pressure piping" means all high pressure piping used
in the installation of hot water or steam heating boilers, any systems of piping hot water or other
medium used for heating that exceed 30 p.s.i. gauge and 250 degrees Fahrenheit, or any system
of high pressure steam, ammonia piping, or bioprocess piping, but shall not include any high
pressure piping under the direct jurisdiction of the United States.
    Subd. 3. Municipality. "Municipality" means a statutory or home rule charter city.
History: 1984 c 481 s 2; 1987 c 132 s 1; 1989 c 22 s 1; 1994 c 465 art 1 s 42; 2006 c 241 s 4