Section 11 Turbochargers
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Inland Waterways Ships, July 2022 - Part 5 Main and Auxiliary Machinery - Chapter 2 Engines - Section 11 Turbochargers

Section 11 Turbochargers

Parent topic: Chapter 2 Engines

11.1 Type test

11.1.1 A type test is to consist of a hot gas running test of at least one hour duration at the maximum permissible speed and maximum permissible temperature. Following the test the turbocharger is to be completely dismantled for examination of all parts.

11.1.2 Alternative arrangements will be specially considered.

11.2 Dynamic balancing

11.2.1 All rotors are to be dynamically balanced on final assembly to the Surveyor’s satisfaction.

11.3 Overspeed test

11.3.1 All fully bladed rotor sections and impeller/inducer wheels are to be overspeed tested for three minutes at either 20 per cent above the maximum permissible speed at room temperature or 10 per cent above the maximum permissible speed at the normal working temperature.

11.4 Mechanical running test

11.4.1 Turbochargers are to be given a mechanical running test of 20 minutes duration at the maximum permissible speed.

11.4.2 Upon application, with details of an historical audit covering previous testing of turbochargers manufactured under an approved quality assurance scheme, consideration will be given to confining the test outlined in Pt 5, Ch 2, 11.4 Mechanical running test 11.4.1 to a representative sample of turbochargers.

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