Boiler Operation Supervisor License Requirements
The required boiler engineer license depends on the boiler’s total heating surface area.
Required license by total heating surface area
For work involving boilers with a total heating surface area of 500 m² or more, a boiler operation supervisor must be appointed from among holders of a special-class boiler engineer license. For work involving boilers with a total heating surface area of 25 m² or more but less than 500 m², the supervisor must be appointed from among holders of either a special-class or first-class boiler engineer license.
Official sources
The following official Tokyo Denki University materials were used to prepare this page.
- 2026 Student Handbook — School of Engineering II (2026 academic year) — PDF page 118