SL2019-681/SRJ Guiding overhaul intervals Updated tables Replaces

Based on the latest service experience and engine development we are pleased to issue a revised version of the guiding overhaul inter-vals tables. The guiding overhaul intervals apply to electronically con-trolled ME and dual fuel type engines.

Longer overhaul intervals can be obtained with a condition-based overhaul strategy. The means to obtain and document this are de-scribed in SL07-483/HRR.In addition, it must be noted that the application of, for example, WHR, EGB, EGR and SCR will affect the heat load on the combus-tion chamber components.

Similarly, a more frequent heavy propeller running, caused by the Energy Efficiency Design Index (EEDI) condi-tion, and the Adverse Weather Condition (AWC) software can have an influence. The above factors as well as fuel qualities and slow steaming may have an impact on the overhaul intervals of especially, but not exclusively, components affected by the cylinder condition and combustion chamber parts.All stated overhaul intervals are total engine running hours regardless of fuel type (HFO, MGO or gas).