Abstract
The problem faced is damage, especially to the screw conveyor from the Continuous Ship Unloader (CSU) as a dry bulk material transfer equipment (phosphate rock) which is taken from the ship's hold which is flowed by a screw conveyor followed by the belt conveyor to the material warehouse to be processed into a type of fertilizer. The purpose of planning is to obtain a schedule and estimated cost of maintenance and repair of CSU for the period 2022 to 2025, and to obtain the ratio of maintenance-repair costs to the profit of the machine. Planning methods uses the IRRO (Inspection, Replace, Repair, and Overhoul) method include data collection of machine maintenance history and component breakdowns, checking CSU specifications, making a list of component life predictions and component prices, predicting costs and duration of component dissasembly, screw conveyor repair, maintenance and repair scheduling, and maintenance and repair cost estimates. The real results of planning in the form of a maintenance and repair schedule for the period of 2022 to 2025; maintenance and repair costs respectively for the years 2022 to 2025 are IDR 136,873,000; IDR 335,986,000; IDR 160,687,000; and IDR 464,733,000; and the ratio between maintenance costs to profit for the years 2022 to 2025 is 0.51, 1.22, 0.57, and 1.63 which means the machine is still fit for use without the need for refurbishment because it is still prospective.
Highlights
INTRODUCTIONIndustrial development in Indonesia, especially the chemical industry has increased from year to year
Industrial development in Indonesia, especially the chemical industry has increased from year to year.Progress in the industrial sector has a very important role in national development in all fields in order to improve people's welfare
One of the fertilizer industries in Gresik, east Java, Indonesia is the port of Terminal for Own Activities for loading and unloading activities, one of the equipment used in the loading and unloading process is the CSU (Continuous Ship Unloader)
Summary
Industrial development in Indonesia, especially the chemical industry has increased from year to year. Due to the important role of CSU at Terminal for Own Activities, an effective maintenance and repair plan must be made to avoid damage that causes breakdown. Maintenance is an attempt to eliminate the causes of the breakdown, if possible before the congestion occurs These efforts can take the form of cleaning, lubrication, periodic inspections, servicing, and tune-ups so that their performance remains within the expected performance range. Preventive maintenance and predictive maintenance are based on a history of maintenance which gives an indication of the degree of damage periodically with possible shifting of component life due to the possible variation in the operating conditions of an equipment. Maintenance and repair costs can increase sharply if good planning is not done, because early symptoms of deterioration are not immediately stopped or reduced through scheduled treatment planning.
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