How often do I need to renew my Boiler Operator License in Montana?

The Boiler Operator License in Montana must be renewed every 12 months.

How much does it cost to renew a Boiler Operator License in Montana?

The renewal cost for a Boiler Operator License in Montana is $35.00.

What happens if my Boiler Operator License expires in Montana?

Operating a boiler without a valid operator license in Montana is a violation subject to penalties under Title 50 of the Montana Code Annotated. Unlicensed operation may result in shutdown orders and civil penalties.

Montana renewal guide

Boiler Operator License

If this license is up for renewal, this page gives you the fee, the timeline, and the items that usually hold the filing up.

Start here

What matters before you file.

Check the fee, the renewal window, and the documents or insurance records that can slow approval down.

Issuing authority

Montana Boiler Operator Program (DLI)

Renewal period

Every 12 months

Renewal fee

$35.00

Bond requirement

Insurance requirement

Before you renew

Get the filing straight.

1
File with the board

File through Montana Boiler Operator Program (DLI) and pay the $35.00 renewal fee once the supporting proof is ready.
Renew online
2
Leave room for processing

Typical processing time is 21 days, so do not wait until the last minute.

Detailed notes

The fine print is here.

Montana Boiler Operator License

The Montana Boiler Operator Program, under the Department of Labor & Industry, issues operator licenses for individuals who operate boilers and pressure vessels in Montana. Examination is required for all license classifications.

License Classifications

Montana issues seven boiler engineer classifications:

1. Low Pressure — Steam boilers ≤15 psi; hot water ≤50 psi/250°F

2. Limited Low Pressure — Hot water heating ≤30 psi/210°F; hot water supply ≤160 psi/210°F

3. Third Class — Steam ≤150 psi; water ≤160 psi/350°F; boilers ≤150 hp

4. Second Class — Steam ≤250 psi; water ≤375 psi/450°F; steam machinery ≤100 hp

5. First Class — All classes, pressures, and temperatures of steam and water boilers

6. Agricultural — Seasonal steam boilers ≤150 psi for agricultural processing

7. Traction — Traction engines or boilers mounted on wheels

Requirements

Must pass the written examination for the desired classification (administered at local Job Services)
Pre-approval from the Program required before scheduling examination
Application Fee: $70 (uniform across all classifications)

Renewal Process

Renewal Period: Annual (renews February 1 through April 1)
Renewal Fee: $35
No continuing education required
Renew online through the DLI licensing portal

Consequences of Operating Without a License

Operating a boiler without a valid operator license is a violation of Montana law subject to penalties including shutdown orders and civil penalties.

*Disclaimer: This information is provided for general reference only and does not constitute legal advice. Always verify current requirements directly with the Montana Boiler Operator Program.*

Official links