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Title: Unlicensed High Pressure Pipefitter (HPP) Registration
Alternate Title:
Description: Those who are not licensed as a master pipefitter or journeyworker pipefitter may assist in the installation of high pressure piping systems under the direct supervision of a licensed pipefitter, if they are registered in an approved pipefitter apprenticeship program, or registered with the Minnesota Department of Labor and Industry (DLI) us as an unlicensed high pressure piping pipefitter.
Subject: High Pressure Piping
Pipefitters
Creation Date: 4/8/2010 1:35:20 PM
Modification Date: 9/3/2026 4:58:23 PM
Agency Name: Labor and Industry (DLI), Minnesota Department of
Agency URL: http://www.dli.mn.gov
Agency Description: The agency ensures Minnesota’s work and living environments are equitable, healthy and safe. The agency oversees the state's programs for apprenticeship, construction codes and licensing, dual-training pipeline, occupational safety and health, wage and hour standards, workers' compensation and youth skills training programs. The Office of Combative Sports, within the Department of Labor & Industry, ensures Minnesota's combative sporting events are conducted in a manner that minimizes injuries and ensures fair competition.
Agency Phone: 651-284-5005
Agency Fax: Agency URL: http://www.dli.mn.gov
Agency Address:
443 Lafayette Road N.

St. Paul
MN 55155

Division Name: Construction Codes and Licensing Division (CCLD)
Division URL: http://www.dli.mn.gov/about-department/our-areas-service/construction-codes-and-licensing
Division Description:
Division Phone: Division Fax: Division URL: http://www.dli.mn.gov/about-department/our-areas-service/construction-codes-and-licensing
Unit Name: Licensing and Certification Services
Unit URL:
Unit Description:
Unit Phone: 651-284-5034
Unit Fax: Contact person(s): dli.license@state.mn.us
Unit URL:
Audience: Hold Application URL: https://www.dli.mn.gov/ims
Renewal URL: https://www.dli.mn.gov/ims
Versa URL:
Requirements: Review:

Pipefitters

Pipefitter Licensing

Who can perform high pressure piping work in Minnesota

You can perform high pressure piping work* if you are:
  • At least 18 years old,

  • Licensed by the Minnesota Department of Labor and Industry (DLI) or registered with DLI as a registered unlicensed pipefitter or registered pipefitter apprentice,

  • A W-2 employee or owner of a licensed high pressure piping contractor.

You can perform high pressure piping work without license only if:
  • You are registered with DLI as an unlicensed pipefitter or employed in the trade of pipefitting under an apprenticeship approved by the department.

  • Your work is directly supervised at all times by a licensed journeyworker or master pipefitter.

  • You and the licensed pipefitter supervising you must be employed by the same licensed high pressure piping contractor. A licensed employee of one company cannot supervise the unlicensed employees of another company. A licensed pipefitter may not supervise more than two unlicensed individuals.


How to become a registered unlicensed pipefitter in Minnesota

  • Apply online through iMS and pay the $14 application fee.

  • You will be assigned a registration number and a card will come in the mail.

  • Your registration will be valid for one year from the end of the month in which you become registered.


Rules: 5230

Statutes: 326B.91

Forms:
Fees:

$14 - new or renew registration

$19 - renew or reinstate an expired pipefitter registration


Period of Issuance:

One year. Registration expires on the last day of the month of the new registration.


Length of Determination: Properly completed applications are processed in a timely manner. All required applicant information must be provided for the application to be processed.
Other Info:
Activity: High Pressure Pipefitter
High Pressure Piping
License Detail URL:

Pipefitter Licensing

Pipefitters

License and Registration Lookup

Minnesota Department of Labor & Industry (DLI)

     


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