As Chief Engineer of a slow-speed diesel engine vessel equipped with an ALCAP fuel oil purification system. You note a definite increase in the rate at which the purifier sludge tank is rising. One of the first items to check on your system would be which of the following?
⢠ALCAP fuel oil purifier operation ā how water and sludge are discharged and where they go ⢠Role of the water transducer vs. opening water solenoid in maintaining the oil/water interface ⢠What condition would cause more liquid than normal (not just solids) to end up in the sludge tank
⢠Ask yourself: If the sludge TANK level is rising faster, does that suggest more solids only, or extra water/liquid being dumped with the sludge? ⢠Which component, if leaking or malfunctioning, would continuously admit water into the separator, so that it is separated out and sent to the sludge tank? ⢠Which items listed would mainly affect control/monitoring (signals and timing) and which one would cause an actual physical change in flow into the bowl or sludge tank?
⢠Identify which choice directly affects physical water flow into the purifier rather than just electrical control or speed. ⢠Review how the ALCAP interface is controlled: the water transducer tells the system where the interface is, but which valve/solenoid actually lets water in or out? ⢠Eliminate any options that would more likely show up first as alarms, erratic discharge cycles, or poor separation quality rather than a steady, rapid rise in sludge tank level.
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