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Key: (1) language to be deleted (2) new language


                         Laws of Minnesota 1987 

                        CHAPTER 382-S.F.No. 1232 
           An act relating to public safety; providing an 
          exception from certain regulations for steam turbines 
          which receive steam from remote municipal facilities; 
          amending Minnesota Statutes 1986, section 183.56. 
    Section 1.  Minnesota Statutes 1986, section 183.56, is 
amended to read:  
    183.56 [EXCEPTIONS.] 
    The provisions of sections 183.38 to 183.62, shall not 
apply to: 
    (1) Boilers in buildings occupied solely for residence 
purposes with accommodations for not more than five families;  
    (2) Railroad locomotives operated by railroad companies for 
transportation purposes;  
    (3) Air tanks installed on the right-of-way of railroads 
and used directly in the operation of trains;  
    (4) Boilers and pressure vessels under the direct 
jurisdiction of the United States;  
    (5) Unfired pressure vessels having an internal or external 
working pressure not exceeding 15 p.s.i.g. with no limit on size;
    (6) Pressure vessels used for storage of compressed air not 
exceeding five cubic feet in volume and equipped with an 
American Society of Mechanical Engineers code stamped safety 
valve set at a maximum of 100 p.s.i.g.;  
    (7) Pressure vessels having an inside diameter not 
exceeding six inches or a length not exceeding 36 inches;  
    (8) Pressure vessels with a nominal water containing 
capacity of 120 gallons or less for containing water under 
pressure including those containing air the compression of which 
serves only as a cushion;  
    (9) Boiler or pressure vessels located on farms used solely 
for agricultural or horticultural purposes;  
    (10) Tanks or cylinders used for storage or transfer of 
liquified petroleum gases;  
    (11) Unfired pressure vessels in petroleum refineries;  
    (12) An air tank or pressure vessel which is an integral 
part of a passenger motor bus, truck, or trailer;  
    (13) Hot water heating and other hot liquid boilers not 
exceeding a heat input of 750,000 BTU per hour;  
    (14) Hot water supply boilers (water heaters) not exceeding 
a heat input of 500,000 BTU per hour, a water temperature of 210 
degrees Fahrenheit, a nominal water capacity of 120 gallons, or 
a pressure of 160 p.s.i.g.; and 
    (15) Laundry and dry cleaning presser not exceeding five 
cubic feet of steam volume; and 
     (16) Steam powered turbines at paper-making facilities 
which are powered by steam generated by municipal steam district 
facilities at a remote location.  
    An engineers license is not required for hot water supply 
    An engineers license is not required for boilers, steam 
cookers, steam kettles, steam sterilizers or other steam 
generators not exceeding 100,000 BTU per hour input, 25 
kilowatt, 2-1/2 horsepower or a pressure of 15 p.s.i.g.  
    Electric boilers not exceeding a maximum working pressure 
of 50 p.s.i.g., maximum of 30 kilowatt input or three horsepower 
rating shall be inspected as pressure vessels and shall not 
require an engineer license to operate. 
    Approved June 2, 1987

Official Publication of the State of Minnesota
Revisor of Statutes