Identification the Cause of Decreased Main Air Compressor Performance in Relation to the Duration of Air Bottle Filling at MT. Giat Armada 01

Abstract

Damage to the compressor often causes compressed air production to decrease, which can cause greater damage, thus disrupting the smooth operation of the ship. The aim of this research is to determine the causal factors, the impact of the decline in the performance of the Main Air Compressor (MAC) on filling air bottles, as well as efforts that can be made to overcome this problem. The research method is descriptive qualitative with the RCA (Root Cause Analysis) 5 why data analysis technique in order to obtain root cause results from the research conducted. The results of the research show that the decrease in compressor pressure is caused by a broken spring delivery valve low pressure, and the impact of this factor is that the pressure on the low pressure delivery valve is too low so that the pressure on the low pressure pressure delivery valve is too low making filling the air bottle too long resulting in a high pressure delivery valve temperature too high. The effort to overcome the broken spring delivery valve low pressure is by replacing the broken spring delivery valve low pressure. For this reason, it is necessary to replace the spring delivery valve low pressure when its service life approaches 1500 working hours, and also clean the valve set every 500 working hours to ensure the valve is still in good and normal condition.