Reliability Analysis and Lifetime Prediction Using Weibull Method on Critical Components of Railway Braking System with Air Brake System

Train is the main means of land transportation used almost all over the world, including Indonesia. This means of transportation has multiple comparative advantages, is low in pollution, saves land and energy, and is mass in nature. The train is currently a means of transportation that is in great demand by the public. When compared to other means of transportation, trains are considered to be more economical, orderly and safe. One of the most important factors in driving safety is the need for effective brakes. Namely brakes that can be operated to slow down or stop a vehicle with the shortest possible braking distance under various travel conditions for a short period of time without compromising the stability of the vehicle. Most of the trains in the world are equipped with a braking system that uses compressed air as a force to push the blocks to the wheels or the bearings to the discs, also known as an air brake system. The braking system on the train is very important, therefore proper maintenance is needed. With the aim of increasing reliability, proper maintenance systems are needed to minimize downtime. Weibull is an appropriate method to determine which includes critical and non-critical parts and is often used in determining the level of failure or damage from the data pattern formed. The results obtained from testing 1 unit of the Air Brake System using the Weibull Method have the same 4 critical components, namely the Brake Cylinder, Brake Coupling, Isolating Cock, Distributor Valve. MTTF values of Brake Cylinder, Brake Coupling, Isolating Cock, Distributor Valve are 285 hours, 405 hours, 589 hours, 835 hours. The reliability values of Brake Cylinder, Brake Coupling, Isolating Cock, Distributor Valve are 43%, 41%, 49%, and 46%, respectively. Periodic Maintenance obtained based on the hour meter (HM) of each Air Brake System.