MN Boiler License Exam Questions and
Verified Correct Answers
Unlimited - correct answer ✔✔What is the maximum boiler horsepower you may take charge of
on a chief engineer's license?
500 Boiler HorsePower - correct answer ✔✔A 1st class engineer may take charge of a boiler
plant not to exceed
30 Days - correct answer ✔✔If you were to fail a chief engineer's exam, how long must you wait
before you would be allowed to take the test again
Engineer's License and Exemption or inspection certificates - correct answer ✔✔What should
be displayed in the boiler room?
100 Boiler Horse Power - correct answer ✔✔A 2nd class engineer may take complete charge of
a boiler plant not to exceed...?
True - correct answer ✔✔T/F When determining what engineers license will be needed, the
total horsepower connected to the common header is used
1st Class Engineer - correct answer ✔✔In a boiler plant where there are two 250 horsepower
boilers using heating surface connected to the same common header, what engineer's license
would be required?
1st Class - correct answer ✔✔What shift engineer's license would be required for two 250 HP
boilers using heating surface connected to the same common header
,True - correct answer ✔✔T/F A special engineer license is for high or low pressure boilers not to
exceed 50 boiler HP
Boiler Inspector - correct answer ✔✔To whom would you report a boiler condition you thought
not safe
2nd Class - correct answer ✔✔What grade license must the shift operator have where a chief
engineer has charge of a plant of 500 BHP?
2nd Class - correct answer ✔✔An engineer with one year of actual boiler operating experience
verified by affidavit would be allowed to take an exam for
1st Class - correct answer ✔✔An engineer having an engineer license, with 3 years actual boiler
operating experience verified by one or more affidavits would be allowed to take an exam for?
Steam or other vapor in excess of 15 PSIG or a water or other liquid boiler in which the pressure
exceeds 160 PSIG or a temperature of 250 F - correct answer ✔✔What is meant by high
pressure boiler?
High and Low pressure boilers and their appurtenances of not more than 50 HP - correct answer
✔✔What would a special engineer's license allow you to operate?
2nd class Grade A or B - correct answer ✔✔A shift engineer in a high-pressure, high-
temperature hot water plant of 500 BHP must have a?
True - correct answer ✔✔T/F The Division of Boiler Inspection may suspend or revoke the
license of any master, pilot or engineer found under the influence of drugs or alcohol when on
duty
, True - correct answer ✔✔T/F Boilers found to be operated by unlicensed or improperly licensed
persons shall not be used until the operators are properly licensed
Once every two years - correct answer ✔✔How often must you renew your high or low
pressure boiler engineer's license
No, see Section 13.183.501 - correct answer ✔✔A company is monitoring boilers by remote
electronic surveillance; do they need a licensed engineer for monitoring
Total bhp not to exceed 500 hp liquid or vapor boilers and their appurtences - correct answer
✔✔What equipment would you be allowed operating responsibility with a 1st Class Engineer's
license Grade B
Chief A, B, or C license - correct answer ✔✔Four, 20 million BTU input hot water boilers are
connected to the same common header. What license would be needed to be in charge of this
plant? (temp of hot water is less than 250 F and pressure is less than 160 psi)
A 2nd Class Grade A, B, or C license - correct answer ✔✔What class and grade of license MUST
the shift engineer have where a chief engineer has charge of a hot water plant operating below
250 F and 160 psig total bhp of 500
10 sq ft of heating surface - correct answer ✔✔For the purpose of the rating bhp for engineer's
license classification only, how many sq ft of heating surface shall be equivalent to one bhp
Boilers operating at a steam or other vapor pressure of 15 psig lr less; or a water or other liquid
boiler in which the pressure does not exceed 160 psig or a temperature of 250 F - correct
answer ✔✔What is meant by the term Low Pressure Boiler
In any plant under the direct supervision of the properly licensed engineer - correct answer
✔✔A special engineer may serve as an apprentice in what size maximum vapor boiler plant
Verified Correct Answers
Unlimited - correct answer ✔✔What is the maximum boiler horsepower you may take charge of
on a chief engineer's license?
500 Boiler HorsePower - correct answer ✔✔A 1st class engineer may take charge of a boiler
plant not to exceed
30 Days - correct answer ✔✔If you were to fail a chief engineer's exam, how long must you wait
before you would be allowed to take the test again
Engineer's License and Exemption or inspection certificates - correct answer ✔✔What should
be displayed in the boiler room?
100 Boiler Horse Power - correct answer ✔✔A 2nd class engineer may take complete charge of
a boiler plant not to exceed...?
True - correct answer ✔✔T/F When determining what engineers license will be needed, the
total horsepower connected to the common header is used
1st Class Engineer - correct answer ✔✔In a boiler plant where there are two 250 horsepower
boilers using heating surface connected to the same common header, what engineer's license
would be required?
1st Class - correct answer ✔✔What shift engineer's license would be required for two 250 HP
boilers using heating surface connected to the same common header
,True - correct answer ✔✔T/F A special engineer license is for high or low pressure boilers not to
exceed 50 boiler HP
Boiler Inspector - correct answer ✔✔To whom would you report a boiler condition you thought
not safe
2nd Class - correct answer ✔✔What grade license must the shift operator have where a chief
engineer has charge of a plant of 500 BHP?
2nd Class - correct answer ✔✔An engineer with one year of actual boiler operating experience
verified by affidavit would be allowed to take an exam for
1st Class - correct answer ✔✔An engineer having an engineer license, with 3 years actual boiler
operating experience verified by one or more affidavits would be allowed to take an exam for?
Steam or other vapor in excess of 15 PSIG or a water or other liquid boiler in which the pressure
exceeds 160 PSIG or a temperature of 250 F - correct answer ✔✔What is meant by high
pressure boiler?
High and Low pressure boilers and their appurtenances of not more than 50 HP - correct answer
✔✔What would a special engineer's license allow you to operate?
2nd class Grade A or B - correct answer ✔✔A shift engineer in a high-pressure, high-
temperature hot water plant of 500 BHP must have a?
True - correct answer ✔✔T/F The Division of Boiler Inspection may suspend or revoke the
license of any master, pilot or engineer found under the influence of drugs or alcohol when on
duty
, True - correct answer ✔✔T/F Boilers found to be operated by unlicensed or improperly licensed
persons shall not be used until the operators are properly licensed
Once every two years - correct answer ✔✔How often must you renew your high or low
pressure boiler engineer's license
No, see Section 13.183.501 - correct answer ✔✔A company is monitoring boilers by remote
electronic surveillance; do they need a licensed engineer for monitoring
Total bhp not to exceed 500 hp liquid or vapor boilers and their appurtences - correct answer
✔✔What equipment would you be allowed operating responsibility with a 1st Class Engineer's
license Grade B
Chief A, B, or C license - correct answer ✔✔Four, 20 million BTU input hot water boilers are
connected to the same common header. What license would be needed to be in charge of this
plant? (temp of hot water is less than 250 F and pressure is less than 160 psi)
A 2nd Class Grade A, B, or C license - correct answer ✔✔What class and grade of license MUST
the shift engineer have where a chief engineer has charge of a hot water plant operating below
250 F and 160 psig total bhp of 500
10 sq ft of heating surface - correct answer ✔✔For the purpose of the rating bhp for engineer's
license classification only, how many sq ft of heating surface shall be equivalent to one bhp
Boilers operating at a steam or other vapor pressure of 15 psig lr less; or a water or other liquid
boiler in which the pressure does not exceed 160 psig or a temperature of 250 F - correct
answer ✔✔What is meant by the term Low Pressure Boiler
In any plant under the direct supervision of the properly licensed engineer - correct answer
✔✔A special engineer may serve as an apprentice in what size maximum vapor boiler plant
