Aggregates Manager Digital Magazine
Issue link: https://read.dmtmag.com/i/107584
EQUIPMENT MANAGEMENT Performance-based testing generates information on the condition of dredge systems and provides important information on the efficiency and energy consumption of the wearing components. Proper Dredge Maintenance Yields Higher Proļ¬ts Four key tasks should be part of a dredge maintenance plan to help ensure long-term operation. by William J. Wetta II P roper equipment maintenance is the key to long-term success, since it reduces production uncertainty by increasing availability, reducing energy consumption, decreasing or eliminating environmental and safety penalties, and allowing major repair scheduling and procurement. Dredges deviate from the typical maintenance model, as they encompass additional challenges because many of the wear items are below the water's surface and are not visible for frequent inspection. Original equipment manufacturer (OEM) literature is often the single best source for creating a written maintenance program. Since all dredge manufacturers use other OEM equipment in their products, they must rely on their recommendations to support the dredge. The supplemental manuals provided for the individual components of the dredge should be read and understood. Due to this fact, adherence to a written maintenance plan can be the starting point for successful dredge operation and production. This plan should include sections that identify what systems need to be inspected, the frequency of equipment inspection/ maintenance, and the tools required to perform the inspection/maintenance services. Whether the machine is a pipeline dredge (hydraulic), a dragline (mechanical), or a clamshell dredge (mechanical), its maintenance requirements can be broken down into several key tasks: visual inspection and lubrication, routine sampling and analysis, performance-based testing, and scheduled replacement. 1. Visual inspection and lubrication Of the four tasks, only visual inspection and lubrication is commonly practiced in the aggregate industry. While this component of dredge maintenance is critical for safety, environmental, and immediate operation concerns, it does not provide enough insight to management to reduce energy costs due to wearing components or to efficiently procure expensive parts on a timely basis. Inspection and lubrication schedules, while commonly provided by the equipment manufacturer, can be created or modified by the dredge operator, plant AGGREGATES MANAGER February 2013 15