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183.51 Examinations; classifications; qualifications.

Subdivision 1. Engineers, classes. Engineers shall be divided into four classes:

(1) Chief engineers; Grade A, Grade B, and Grade C. (2) first class engineers; Grade A, Grade B, and Grade C. (3) second class engineers; Grade A, Grade B, and Grade C. (4) Special engineers.

Subd. 2. Applications. Any person who desires an engineer's license shall make a written application, on blanks furnished by the inspector. The person shall also successfully pass a written examination for such grade of license applied for.

Subd. 3. High and low pressure boilers. For the purposes of this section and section 183.50, high pressure boilers shall mean boilers operating at a steam or other vapor pressure in excess of 15 p.s.i.g., or a water or other liquid boiler in which the pressure exceeds 160 p.s.i.g. or a temperature of 250 degrees Fahrenheit.

Low pressure boilers shall mean boilers operating at a steam or other vapor pressure of 15 p.s.i.g. or less, or a water or other liquid boiler in which the pressure does not exceed 160 p.s.i.g. or a temperature of 250 degrees Fahrenheit.

Subd. 4. Chief engineer, Grade A. A person seeking licensure as a chief engineer, Grade A, shall be at least 18 years of age and have experience which verifies that the person is competent to take charge of and be responsible for the safe operation and maintenance of all classes of boilers, steam engines, and turbines and their appurtenances; and, before receiving a license, the applicant shall take and subscribe an oath attesting to at least five years actual experience in operating such boilers, including at least two years experience in operating such engines or turbines.

Subd. 5. Chief engineer, Grade B. A person seeking licensure as a chief engineer, Grade B, shall be at least 18 years of age and have habits and experience which justify the belief that the person is competent to take charge of and be responsible for the safe operation and maintenance of all classes of boilers and their appurtenances; and, before receiving a license, the applicant shall take and subscribe an oath attesting to at least five years actual experience in operating those boilers.

Subd. 6. Chief engineer, Grade C. A person seeking licensure as a chief engineer, Grade C, shall be at least 18 years of age and have habits and experience which justify the belief that the person is competent to take charge of and be responsible for the safe operation and maintenance of all classes of low pressure boilers and their appurtenances, and before receiving a license, the applicant shall take and subscribe an oath attesting to at least five years of actual experience in operating such boilers.

Subd. 7. First-class engineer, Grade A. A person seeking licensure as a first-class engineer, Grade A, shall be at least 18 years of age and have experience which verifies that the person is competent to take charge of and be responsible for the safe operation and maintenance of all classes of boilers, engines, and turbines and their appurtenances of not more than 300 horsepower or to operate as a shift engineer in a plant of unlimited horsepower. Before receiving a license, the applicant shall take and subscribe an oath attesting to at least three years actual experience in operating such boilers, including at least two years experience in operating such engines or turbines.

Subd. 8. First-class engineer, Grade B. A person seeking licensure as a first-class engineer, Grade B, shall be at least 18 years of age and have habits and experience which justify the belief that the person is competent to take charge of and be responsible for the safe operation and maintenance of all classes of boilers of not more than 300 horsepower or to operate as a shift engineer in a plant of unlimited horsepower. Before receiving a license the applicant shall take and subscribe an oath attesting to at least three years actual experience in operating such boilers.

Subd. 9. First-class engineer, Grade C. A person seeking licensure as a first-class engineer, Grade C, shall be at least 18 years of age and have habits and experience which justify the belief that the person is competent to take charge of and be responsible for the safe operation and maintenance of all classes of low pressure boilers and their appurtenances of not more than 300 horsepower or to operate as a shift engineer in a low pressure plant of unlimited horsepower. Before receiving a license, the applicant shall take and subscribe an oath attesting to at least three years actual experience in operating such boilers.

Subd. 10. Second-class engineer, Grade A. A person seeking licensure as a second-class engineer, Grade A, shall be at least 18 years of age and have experience which verifies that the person is competent to take charge of and be responsible for the safe operation and maintenance of all classes of boilers, engines, and turbines and their appurtenances of not more than 100 horsepower or to operate as a shift engineer in a plant of not more than 300 horsepower, or to assist the shift engineer, under direct supervision, in a plant of unlimited horsepower. Before receiving a license the applicant shall take and subscribe an oath attesting to at least one year of actual experience in operating such boilers, including at least one year of experience in operating such engines or turbines.

Subd. 11. Second-class engineer, Grade B. A person seeking licensure as a second-class engineer, Grade B, shall be at least 18 years of age and have habits and experience which justify the belief that the person is competent to take charge of and be responsible for the safe operation and maintenance of all classes of boilers of not more than 100 horsepower or to operate as a shift engineer in a plant of not more than 300 horsepower or to assist the shift engineer, under direct supervision, in a plant of unlimited horsepower. Before receiving a license the applicant shall take and subscribe an oath attesting to at least one year of actual experience in operating such boilers.

Subd. 12. Second-class engineer, Grade C. A person seeking licensure as a second-class engineer, Grade C, shall be at least 18 years of age and have habits and experience which justify the belief that the person is competent to take charge of and be responsible for the safe operation and maintenance of all classes of low pressure boilers and their appurtenances of not more than 100 horsepower or to operate as a shift engineer in a low pressure plant of not more than 300 horsepower, or to assist the shift engineer, under direct supervision, in a low pressure plant of unlimited horsepower. Before receiving a license, the applicant shall take and subscribe an oath attesting to at least one year of actual experience in operating such boilers.

Subd. 13. Special engineer. A person seeking licensure as a special engineer shall be at least 18 years of age and have habits and experience which justify the belief that the person is competent to take charge of and be responsible for the safe operation and maintenance of all classes of boilers and their appurtenances of not more than 30 horsepower or to operate as a shift engineer in a plant of not more than 100 horsepower, or to serve as an apprentice in any plant under the direct supervision of the properly licensed engineer.

Subd. 14. Current boiler operators. Any person operating a boiler other than a steam boiler on April 15, 1982 shall be qualified for application for the applicable class license upon presentation of an affidavit furnished by an inspector and sworn to by the person's employer or a chief engineer. The applicant must have at least the number of years of actual experience specified for the class of license requested and pass the appropriate examination.

Subd. 15. Rating horsepower. For the purpose of rating boiler horsepower for engineer license classifications only: ten square feet of heating surface shall be considered equivalent to one boiler horsepower for conventional boilers and five square feet of heating surface equivalent to one boiler horsepower for steam coil type generators.

HIST: (5487) RL s 2181; 1919 c 113 s 1; 1919 c 240 s 4; 1947 c 563 s 2; 1957 c 503 s 13; 1957 c 876 s 2; 1965 c 49 s 1; 1973 c 725 s 28-35; 1974 c 406 s 41; 1982 c 379 s 15; 1986 c 444; 1988 c 719 art 19 s 6-8