<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This paper presents a method of adjusting and designing the maintenance scheme for the high-pressure fuel pumps of a slow-speed two-stroke marine engine, MAN 6S70MC-C. The maintenance database for the marine fuel system was obtained from the planned maintenance software, and covered a period of 11 years. During this period, 29 failures occurred that required corrective actions. Our methodology includes failure mode analysis, risk analysis, reliability calculation and maintenance interval adjustment. Each failure is described using a failure mode analysis, based on a combination of the mode and cause of failure. The objective of this study is to recommend a new preventive maintenance interval based on the exponential reliability results and the analysed maintenance data. The initial maintenance plan for each fuel pump was set to 8,000 running hours, whereas in the modified plan, it is recommended to set this to 4,000 hours. Our results show an increase in the system reliability from 60% to 95% when the new modified maintenance plan is applied. In addition, the results and the recommended initial maintenance schedule are validated based on three similar types of engine with the same fuel pump system. The new maintenance approach can reduce the risk of component failure, which will lead to increased reliability of the fuel pump system and the optimisation of maintenance costs.</p>
</abstract>

This paper presents a method of adjusting and designing the maintenance scheme for the high-pressure fuel pumps of a slow-speed two-stroke marine engine, MAN 6S70MC-C. The maintenance database for the marine fuel system was obtained from the planned maintenance software, and covered a period of 11 years. During this period, 29 failures occurred that required corrective actions. Our methodology includes failure mode analysis, risk analysis, reliability calculation and maintenance interval adjustment. Each failure is described using a failure mode analysis, based on a combination of the mode and cause of failure. The objective of this study is to recommend a new preventive maintenance interval based on the exponential reliability results and the analysed maintenance data. The initial maintenance plan for each fuel pump was set to 8,000 running hours, whereas in the modified plan, it is recommended to set this to 4,000 hours. Our results show an increase in the system reliability from 60% to 95% when the new modified maintenance plan is applied. In addition, the results and the recommended initial maintenance schedule are validated based on three similar types of engine with the same fuel pump system. The new maintenance approach can reduce the risk of component failure, which will lead to increased reliability of the fuel pump system and the optimisation of maintenance costs.

Optimisation of Reliability and Maintenance Plan of the High-Pressure Fuel Pump System on Marine Engine

Polish Maritime Research

This work is licensed under the Creative Commons Attribution 4.0 International License.

This paper presents a method of adjusting and designing the maintenance scheme for the high-pressure fuel pumps of a slow-speed two-stroke marine engine, MAN...

Optimisation of Reliability and Maintenance Plan of the High-Pressure Fuel Pump System on Marine Engine

Pubblicato online: 21 dic 2022

Pagine: 97 - 104

DOI: https://doi.org/10.2478/pomr-2022-0047

Parole chiave
reliability, maintenance modification, high-pressure fuel pump, risk analysis

© 2022 Vlatko Knežević et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Optimisation of Reliability and Maintenance Plan of the High-Pressure Fuel Pump System on Marine Engine

Pubblicato online: 21 dic 2022

Pagine: 97 - 104

DOI: https://doi.org/10.2478/pomr-2022-0047

Parole chiavereliability, maintenance modification, high-pressure fuel pump, risk analysis

© 2022 Vlatko Knežević et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Parole chiave
reliability, maintenance modification, high-pressure fuel pump, risk analysis