CLASS 1 — TRAINEE/HELPER — OAR 918-225-0691(3)
Scope:
May install, alter, or repair boilers, pressure vessels or pressure piping by any non-welded method of attachment. This
work can be done only under the direct supervision of an appropriately qualified license holder. The direct supervision
must be a ratio of one qualified license holder to one trainee. No code welding can be done under this license.
Qualifications:
• Complete application
• Pay fee
• Experience is not required
CLASS 2 — PRESSURE-VESSEL INSTALLER — OAR 918-225-0691 (4)
Scope:
May install or repair unfired pressure vessels by any non-welded method of attachment.
Qualifications:
• Complete application
• Pay fee
• Pass an examination
• Experience is not required
CLASS 3 — BUILDING-SERVICE MECHANIC — OAR 918-225-0691 (5)
Scope:
May install or repair boilers (including boiler and non-boiler external piping) and unfired pressure vessels by a
non-welded method of attachment.
Qualifications:
• Complete application
• Pay fee
• Pass an examination
• Provide 2,000 hours of verified work experience installing and repairing boilers
CLASS 4 — BOILERMAKER — OAR 918-225-0691 (6)
Scope:
May install, alter, or repair boilers and pressure vessels (excluding non-boiler external piping) by welding or other
methods of attachment.
Qualifications:
•
Complete application
•
Pay fee
•
Pass an examination
•
Provide 2,000 hours of verified work experience welding and 2,000 hours work experience doing non-
welding applications involving boiler or pressure vessels
CLASS 5 — PRESSURE-PIPING MECHANIC — OAR 918-225-0691 (7)
Scope:
May fabricate, install, alter, and repair pressure piping; install boilers and pressure vessels by attachment of piping
connections; and install, assemble and repair cast iron sectional boilers.
Qualifications:
• Complete application
• Pay fee
• Pass an examination
• Provide 2,000 hours of verified work experience performing pipe-welding or brazing on ASME B31 pressure
piping and 2,000 hours of experience performing work on pressure piping and boilers