SECOND CLASS BOILER LICENSES
MINNESOTA || 2025 LATEST UPDATE||
VERIFIED A+
Certificate of inspection - ANSWERmeans 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 - ANSWERmeans 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 - ANSWERmeans 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 - ANSWERmeans the last possible date that the inspection can be completed within
the time limits in this chapter
Insurance company boiler inspector - ANSWERmeans a national board-commissioned inspector who
holds a current certificate of competency issued by the state.
Low-pressure boiler - ANSWERmeans 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 - ANSWERmeans 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 Inspection Code; NBIC - ANSWERmeans 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 - ANSWERmeans 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 - ANSWERpounds per square inch gauge
Remote monitoring - ANSWERmeans the act of viewing or overseeing the boiler or boiler plant operating
parameters and conditions from a remote location.
Repair. - ANSWERmeans the work necessary to restore a boiler or pressure vessel to a safe and
satisfactory operating condition, as defined in National Board Inspection Code, part 3, section 9.
State boiler inspector - ANSWERmeans a national board commissioned boiler inspector who holds a
current certificate of competency and a current chief grade A boiler operator's license.
Inspection - ANSWERInspectors shall subject all boilers to a thorough internal and external examination
according to the standards in sections 326B.964 and 326B.966
Chief engineer, Grade B. - ANSWER. An individual 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 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, and before receiving a license, the applicant shall take and
subscribe an oath attesting to at least five years of actual experience in operating the boilers except as
provided in subdivision 18
First-class engineer, Grade A. - ANSWERAn 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. Before receiving a license, the applicant shall take and
MINNESOTA || 2025 LATEST UPDATE||
VERIFIED A+
Certificate of inspection - ANSWERmeans 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 - ANSWERmeans 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 - ANSWERmeans 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 - ANSWERmeans the last possible date that the inspection can be completed within
the time limits in this chapter
Insurance company boiler inspector - ANSWERmeans a national board-commissioned inspector who
holds a current certificate of competency issued by the state.
Low-pressure boiler - ANSWERmeans 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 - ANSWERmeans 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 Inspection Code; NBIC - ANSWERmeans 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 - ANSWERmeans 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 - ANSWERpounds per square inch gauge
Remote monitoring - ANSWERmeans the act of viewing or overseeing the boiler or boiler plant operating
parameters and conditions from a remote location.
Repair. - ANSWERmeans the work necessary to restore a boiler or pressure vessel to a safe and
satisfactory operating condition, as defined in National Board Inspection Code, part 3, section 9.
State boiler inspector - ANSWERmeans a national board commissioned boiler inspector who holds a
current certificate of competency and a current chief grade A boiler operator's license.
Inspection - ANSWERInspectors shall subject all boilers to a thorough internal and external examination
according to the standards in sections 326B.964 and 326B.966
Chief engineer, Grade B. - ANSWER. An individual 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 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, and before receiving a license, the applicant shall take and
subscribe an oath attesting to at least five years of actual experience in operating the boilers except as
provided in subdivision 18
First-class engineer, Grade A. - ANSWERAn 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. Before receiving a license, the applicant shall take and
