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SECOND CLASS BOILER| LICENSE| 2026| Certificate
of inspection. - ANSWER -means a sticker attached to the boiler or pressure vessel which documents the month and year of the inspection and the employer of the inspector performing the inspection. Certificate of registration - ANSWER -means a document that has been made available on the department's Web site that lists all registered boilers and pressure vessels at a location, including the last inspection date, the certificate expiration date, and the maximum allowable working pressure for each boiler or pressure vessel. High-pressure boiler - ANSWER -means a boiler operating at a steam or other vapor pressure in excess of 15 psig, or a water or other liquid boiler in which the pressure exceeds 160 psig or the temperature exceeds 250 degrees Fahrenheit. Inspection due date - ANSWER -means the last possible date that the inspection can be completed within the time limits in this chapter Insurance company boiler inspector - ANSWER -means a national board-commissioned inspector who holds a current certificate of competency issued by the state. Low-pressure boiler. - ANSWER -means a boiler operating at a steam or other vapor pressure of 15 psig or less, or a water or
other liquid boiler in which the pressure does not exceed 160 psig and the temperature does not exceed 250 degrees Fahrenheit. National board. - ANSWER -means the National Board of Boiler and Pressure Vessel Inspectors, which is an organization comprised of chief Inspectors for the states, cities, and territories of the United States and provinces and territories of Canada. National Board commissioned inspector - ANSWER -means an individual who has been examined and found qualified to inspect in-service boilers and pressure vessels by the national board, and who holds a current commission issued by the national board. National Board Inspection Code; NBIC - ANSWER -means a three- part technical document that is written and published by the national board detailing the installation, inspection, and repair of boilers and pressure vessels. Operation. - ANSWER -means the on-site act of manipulating, monitoring, and testing of boilers and their appurtenances by a properly licensed engineer or an apprentice under the direct supervision of the properly licensed engineer. Psig. - ANSWER -pounds per square inch gauge. Remote monitoring. - ANSWER -the act of viewing or overseeing the boiler or boiler plant operating parameters and conditions from a remote location.
First-class engineer, Grade A - ANSWER -. An individual seeking licensure as a first class engineer, Grade A, shall be at least 18 years of age and have experience which verifies that the individual 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 500 horsepower or to operate as a shift engineer in a plant of unlimited horsepower. First-class engineer, Grade B - ANSWER -. An individual 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 individual is competent to take charge of and be responsible for the safe operation and maintenance of all classes of boilers of not more than 500 horsepower or to operate as a shift engineer in a plant of unlimited horsepower. First-class engineer, Grade C - ANSWER -. An individual 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 individual 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 500 horsepower or to operate as a shift engineer in a low-pressure plant of unlimited horsepower. Second-class engineer, Grade A - ANSWER -. An individual seeking licensure as a secondclass engineer, Grade A, shall be at least 18 years of age and have experience which
verifies that the individual 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 500 horsepower, or to assist the shift engineer, under direct supervision. Second-class engineer, Grade B. - ANSWER -An individual seeking licensure as a secondclass engineer, Grade B, shall be at least 18 years of age and have habits and experience which justify the belief that the individual 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 500 horsepower or to assist the shift engineer, under direct supervision, in a plant of unlimited horsepower. Second-class engineer, Grade C. - ANSWER -An individual seeking licensure as a secondclass engineer, Grade C, shall be at least 18 years of age and have habits and experience which justify the belief that the individual 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 500 horsepower. Scope. - ANSWER -For the purposes of this chapter and Minnesota Statutes, sections 326B.952 to 326B.998, the following terms have the meanings given them.
is employed by an authorized inspection agency or the jurisdiction. Commissioner - ANSWER -means the commissioner of the department. Department. - ANSWER -Department of Labor and Industry.
. Direct supervision - ANSWER -oversight of an apprentice's activities on a boiler including attendance at the boiler plant at all times. Division. - ANSWER -the Division of Boiler Inspection. High pressure boiler. - ANSWER -power boiler as defined in Section I of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code. Operating engineer. - ANSWER -a properly licensed individual who operates and maintains boilers and their appurtenances. Operating experience. - ANSWER -activities in boiler operations and maintenance that include training, observation, and personal participation. Operation. - ANSWER -the act of manipulating and monitoring, except as provided in Minnesota Statutes, section 326B.972,
paragraph (b), boilers or appurtenances to assure safe operation for the intended purpose in accordance with this chapter.
. Repair firm. - ANSWER -a company or organization that holds a current "R" repair certificate of authorization issued by the National Board of Boiler and Pressure Vessel Inspectors and performs welded repairs or alterations on boilers or pressure vessels. . Shift engineer - ANSWER -the operating engineer responsible to the chief operating engineer in charge of and responsible for the safe operation of a boiler plant in the absence of the chief engineer. Compliance requirements - ANSWER -The experience requirements are detailed in this part and documentation requirements are detailed in subpart 9. Applicants with previous experience in a jurisdiction requiring licensure must show proof of compliance with the licensure requirements of that jurisdiction in order to receive credit for the experience. . Special class experience requirements. - ANSWER -A special class license requires only a signed application form. No previous experience is necessary. . Second class experience requirements. - ANSWER -A second class license requires one year of operating experience, documented as described in subpart 9, on a boiler of proper size under Minnesota Statutes, section 326B.978, subdivisions 12 to
continuously monitored by an operating engineer, 24 hours per day, until the division has either sealed the object, verified that the unsafe condition has been corrected, or determined that continuous monitoring is no longer required. plant of 0 to 50 horsepower. - ANSWER -At a minimum, a high pressure boiler plant of 0 to 50 horsepower, when in operation, must be visually observed at least once every 24 hours by an operating engineer. plant of 51 to 500 horsepower. - ANSWER -A high pressure boiler plant of 51 to 500 horsepower may be left in operation unattended by an operating engineer for no more than two consecutive hours, except as permitted by item B or subpart 5. plant over 500 horsepower. - ANSWER -A high pressure boiler plant of more than 500 horsepower, when in operation, requires constant attendance, except as otherwise provided in item B or subpart 5. unoccupied plant. - ANSWER -This subpart applies to plants with individual boilers that are 51 to 500 horsepower located in an unoccupied plant. A high pressure boiler 51 to 500 horsepower may participate in the remote monitoring program if it complies with the requirements in items A to N. MAXIMUM ALLOWABLE WORKING PRESSURE. - ANSWER -The maximum allowable working pressure for boilers and pressure vessels must not exceed that determined for those objects in
Section I for high pressure boilers, Section IV for low pressure boilers, or Section VIII for unfired vessels of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code. STAMPS ON BOILER AND PRESSURE VESSELS. - ANSWER -Each boiler or pressure vessel must be constructed in compliance with and stamped with the respective American Society of Mechanical Engineers Code Symbol Stamp, or international code symbol accepted by the National Board, and the National Board symbol registration number or the Minnesota Special (MINN. SPC). SAFETY VALVES. - ANSWER -Every high pressure or low pressure boiler must have at least one safety valve. A ler of more than 500 square feet of water heating surface must have two or more safety valves. All safety valves must meet the requirements of Section I, IV, Revision 1 24 September 7, 2017 or VIII of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, and be so stamped, and be set no higher than the maximum allowable working pressure on the inspector's certificate for that boiler. WATER GAGE. - ANSWER -When the boiler operating pressure exceeds 100 pounds per square inch, the water gage glass must be fitted with either a gate-type or plug-type valved drain to a safe discharge point. WATER COLUMN SHUTOFFS. - ANSWER -When shutoffs are used in pipe connections between a boiler and water column or between a boiler and the shutoff valves required for the gage glass they must be either outside-screw-and-yoke or lever-lifting type gate valves or stopcocks with levers permanently fastened and marked in line with their passage, or other through-flow
100 pounds per square inch. For pressures up to 200 pounds per square inch cast iron valves may be used if they meet the requirements of Section I of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, which adopts the American National Standards Institute Standard for 250 pounds; and if of steel must be equal to the requirements of Section I of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, which adopts the American National Standards Institute Standard. For pressures over 200 pounds per square inch the valves or cocks must be of steel and at least equal to the requirements of Section I of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code which adopts the American National Standards Institute Standard. BLOWOFF PIPING. - ANSWER -On all stationary boilers, when the allowable working pressure exceeds 100 pounds per square inch, each bottom blowoff pipe must have two slow-opening valves, or one slow-opening valve and a quick-opening valve or a cock complying with Section I of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code. The quick-opening valve, if used, must be located nearest the boiler. FEED PIPING AND CHECK VALVE. - ANSWER -The feed-pipe must be provided with a check valve near the boiler and a valve or cock between the check valve and the boiler. When two or more boilers are fed from a common source, there must be a globe or regulating valve on the branch to each boiler between the check valve and the source of supply. Wherever globe valves are used on feed piping, the inlet must be under the disk. FEEDWATER SUPPLY. - ANSWER -A high pressure boiler having more than 500 square feet of water heating surface (50 BHP)
must have at least two means of feeding. Each source of feeding must be capable of supplying water to the boiler at a pressure of three percent higher than the highest setting of any safety valve on the boiler. For boilers that are fired with solid fuel not in suspension, and for boilers whose setting or heat source can continue to supply sufficient heat to cause damage to the boiler if the feed supply is interrupted, one such means of feeding must not be susceptible to the same interruption as the other, and each source must provide sufficient water to prevent damage to the boiler.
