Today, for any large seagoing vessel, sailing e. g. continuously around the world, availability and therefore reliability is absolutely necessary. Emerging failures must be recognized as early as possible, which is a strong motivation for a shipping company to invest in condition monitoring (CM). After installation of a CM tool the next consequent step is to change the maintenance strategy from timebased maintenance to condition-based maintenance with the main objective to avoid unnecessary openup inspections with the risk of introducing failures into a well-functioning system. Further, unplanned maintenance disturbing operation should also be avoided. The resulting benefit can be only achieved, if the responsible classification society adapt their survey procedure to this maintenance concept. Since 2005, the main engine of C/V NORASIA ALYA (7 K 80 MC-C) is equipped with a bearing wear condition monitoring device and with tools to monitor the load balance between the cylinders, and to assess the condition of piston rings and liners. In a joined industry project, the shipping company, the engine maker, the manufacturer of the CM tools and the responsible classification society are working together, to gather experience with these tools and to prepare the way to condition-based survey procedures. The paper will present details of the respective condition monitoring tools, and some selected measurement results will illustrate the condition monitoring procedure in practice.
From condition monitoring via condition based maintenance to condition based survey
2007
11 Seiten, 26 Bilder
Aufsatz (Konferenz)
Datenträger
Englisch
From condition monitoring via condition based maintenance to condition based survey
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