Ali Musyafa, Rony Dwi Noriyati : Evaluation of the Reliability and Prediction Maintenance on the Air Compressor System in Ammonia Plant PT. Petrokimia Gresik

Dr.Ir. Ali Musyafa M.Sc.
Ir. Rony Dwi Noriyati M.Kes



Published in

Australian Journal of Basic and Applied Sciences

External link


Jurnal Internasional




The air compressor in ammonia plant 101J has pressure of 7 kg/cm². The type of Air Compressor is centrifugal. It is very important role in the supply of air, so necessary to evaluate the value of reliability in the performance. Evaluation relating to the time-frequency component failure or functions. Components of air compressor evaluated is components often run into failure, it is rotor, air filter, journal bearing, thrust bearing, oil lubricant, pressure indicator, and temperature indicator. Overall reliability of the values obtained in air compressor system over 500 hours of operational is 0, 71. Over 1000 hours of operational is 0, 61 and over 1500 hours of operational is 0, 52. The rotor component is the component most often occurs due to unstable due to the impeller, causing unstable centrifugal force. This impact can cause the air compressor trip. In financing of preventive maintenance on reliability get up to 70%, 60% and 50% on components. Rotor obtainable USD 4654; USD 3750 and USD 3433