IACS UR M43 - Turbocharger Certification
Turbocharger certification category (A, B or C) per IACS UR M43 based on engine power served - drives the scope of type-test and containment requirements.
UR M43 category
A - Full type-test, containment test mandatory
Formula, assumptions, and limits
Category A ≥ 3 000 kW; B 1 000–3 000 kW; C < 1 000 kW. Containment test demonstrates that a burst rotor does not escape the casing and strike surrounding equipment.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Main-engine rated power | kW | nameplate |