Boiler Examination, Licensing Information and Applications

Boiler licensing is not part of the Veteran Exemption's that were passed in 2012. This information was included on the Boiler Renewal notice in error. We apologize for this error.

NOTICE: Boiler Installer and Repairer Examinations will be conducted through PSI Starting June 1, 2016.

Once your application is approved for an examination you will be notified by a third party testing agency (PSI) with instructions on how to schedule your examination. All examination fees will be paid to PSI at that time. Please do not send in payment with your application.

Boiler Operator and Stationary Engineer Examinations 

  • High- and low- pressure boiler operator examinations shall be written.
  • Stationary engineer exams shall be both written and oral.
  • The written examination for all classifications of boiler operator and stationary engineer shall be delivered and administered by NIUPLE, National Institute for Uniform Licensing of Power Engineers.
  • The oral examination for all classifications of stationary engineer shall be administered a Boiler Board approved review panel when the applicant has successfully passed the written examination.
  • All examinations require an original application be submitted to the Boiler Division.


Application for Boiler Operator or Stationary Engineer Examination 


Boiler Installer's License 

  • A class 1B installer's license qualifies a person to install a low-pressure boiler that does not exceed a firing rate of 1,000,000 BTU per hour as certified by the boiler manufacturer. For a class 1B license, the sum of all modules in a modular boiler shall not exceed a firing rate of 1,000,000 BTU per hour as certified by the boiler manufacturer.
  • A class 2B installer's license qualifies a person to do all of the following:
    (a) Install a low-pressure boiler of any capacity or firing rate.
    (b) To perform work covered by a class 1B license.
  • A class 3B installer's license qualifies a person to do all of the following:
    (a) Install a power boiler that has a capacity of not more than 5,000 pounds of steam per hour.
    (b) Install or replace non-boiler external piping as defined by ASME code B31.1 and R 408.4032.
    (c) Perform work covered by a class 2B license.
  • A class 4B installer's license qualifies a person to do all of the following:
    (a) Install a boiler that has a capacity of not more than 300,000 pounds of steam per hour.
    (b) Install or replace non-boiler external piping as defined by ASME code B31.1 and R 408.4032.
    (c) Perform work covered by a class 3B license.
  • A class 5B installer's license qualifies a person to do all of the following:
    (a) Install a boiler of any capacity or firing rate. Exception: a nuclear heat source boiler.
    (b) Install or replace non-boiler external piping as defined by ASME code B31.1 and R 408.4032.
    (c) Perform work covered by a class 4B license.
  • A class 6B installer's license qualifies a person to install a boiler that utilizes a nuclear heat source or its parts, appurtenances, or system components. Before a license is issued, an applicant for a class 6B license shall submit evidence of both of the following:
    (a) Familiarity with and knowledge of all federal rules and regulations regarding the installation of a boiler that has a nuclear heat source.
    (b) Employment by a company in possession of a valid ASME nuclear code symbol applicable to the portions of any nuclear boiler system that the company proposes to install.
  • A class P license qualifies a person to install or replace non-boiler external piping or repair non-boiler external piping as defined by ASME code B31.1 and R 408.4032.


Boiler Installer's Examination Instructions
Application for Boiler Installer's or Repairer's Examination


Boiler Repairer's License

  • A class I license allows a licensee to repair a boiler by means other than welding, riveting, or other fabrication process.
  • A class II license allows a licensee to do both of the following:
    (a) Repair a low-pressure boiler, a hot water supply boiler, and a fire tube boiler of any pressure.
    (b) Perform work covered by a class I license.
  • A class III license allows a licensee to do all of the following:
    (a) Repair a high-pressure boiler.
    (b) Repair or replace non-boiler external piping, as defined by ASME code B31.1 and R 408.4032.
    (c) Perform work covered by a class II license.
  • A class IV license allows a licensee to do all of the following:
    (a) Repair or field-erect a boiler of any pressure. Exception: a boiler that has a nuclear heat source.
    (b) Repair or replace non-boiler external piping as defined by ASME code B31.1 and R 408.4032.
  • A class V license allows a licensee to erect and repair a boiler that has a nuclear heat source or its parts, appurtenances, or system components, and also provides the following:
    (a) The licensee may repair or replace non-boiler external piping, as defined by ASME code B31.1 and R 408.4032.
    (b) Before a license is issued, an applicant for a class V license shall submit evidence of the following:
    (i) Familiarity with and knowledge of all federal rules and regulations regarding the construction of a boiler that has a nuclear heat source.
    (ii) Employment by a company in possession of a valid ASME N-type symbol stamp applicable to the portions of any nuclear boiler system he or she proposes to repair.
  • A class P license qualifies a person to install or repair non-boiler external piping as defined by ASME code B31.1 and R 408.4032.


Boiler Repairer's Examination Instructions
Application for Boiler Installer's or Repairer's Examination


National Board 
Please contact the National Board of Boiler and Pressure Vessel Inspectors at http://www.nationalboard.org/default.aspx .

The exam site and parking are accessible. Individuals attending the exam are requested to refrain from using heavily scented personal care products, in order to enhance accessibility for everyone. Please make sure all cell phones, pagers and other personal electronic devices are turned off or set to vibrate. People with disabilities requiring additional services (such as materials in alternative format) should contact the Boiler Division at 517-241-9334 at least 10 work days before the event. LARA is an equal opportunity employer/program.

Dates, time and locations are subject to change. Questions regarding board meetings should be directed to the Boiler Division at 517-241-9334.