The following are considered high-pressure-piping systems:
A business must first employ an individual who has a contractor pipefitter license. The business may then apply for a Minnesota high-pressure-piping business license. After the business has met these requirements, it may apply for a permit to install or fabricate high-pressure piping. The business must also employ licensed journeyman pipefitters to install or fabricate the high-pressure piping.
Persons who are not licensed as contracting or journeyman high-pressure-piping pipefitters 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 CCLD as an unlicensed high-pressure-piping pipefitter.
Licensed contracting or journeyman high-pressure-piping pipefitters may directly supervise no more than two unlicensed persons.
An individual must have five years experience in the practical installation or fabrication of high-pressure-piping systems, apply for and be approved to take the contracting pipefitter exam, and receive a minimum score of 70 on the exam.
An individual must have four years of experience in the practical installation or fabrication of high-pressure-piping systems, apply for and be approved to take the journeyman pipefitter exam, and receive a minimum score of 70 on the exam.
Both examinations are drawn from the Department of Labor and Industry's high-pressure piping and code for power-piping systems: Minnesota Statutes Chapter 326B - sections 326B.90 to 326B.925 and Minnesota Rules Chapter 5230. This information is also available for purchase from Minnesota's Bookstore, 660 Olive Street, St. Paul, MN 55155, (651) 297-3000.
Other available study guides:
The a application and affidavit forms are available for download on this Web site or by contacting the Minnesota Department of Labor and Industry at (651) 284-5059
All costs of labor and material for the installation/fabrication of the high-pressure-piping project are to be included. This includes the cost of material supplied by the owner of the facility of the project. There is a worksheet with the permit application form to assist you in the calculation of these fees.