TWO-DIMENSIONAL LEASE CONTRACT WITH PREVENTIVE MAINTENANCE POLICY

• Main Author: ATMAN MAULANA (NIM: 20814010), HUTOMO
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/27898
• Institution: Institut Teknologi Bandung

The latest financial crisis raised price of some industrial and mining equipment. In the other hand, the price of mining material particularly coal and petroleum recently have fallen. As a result, some of mining companies tend to reduce capital expense. They prefer to hire the equipment from an external agent or Original Equipment Manufacture (OEM) that is commonly known as the term leasing. A two-dimensional lease contract will be ended when the age or usage have reached a specified limit. During the lease period, all of the maintenance are performed by the lessor. A corrective maintenance (CM) will <br /> <br /> be conducted when a failure occur with level minimal repair. A preventive maintenance (PM) will be carried out when the age or usage have reached a certain limit. This research proposed a stochastic lease contract which is <br /> <br /> modeled by using bivariate Weibull and copula approach. The number of failure during the contract period is calculated by using non-homogeneous Poisson process (NHPP). Corrective maintenance (CM) will be conducted <br /> <br /> when a failure occur with level minimal repair. This research uses a case study of 64 truck Kerax 440 which are bought by PT. AKT in 2010 and 2011. A simulation is performed to calculate the expected lease contract <br /> <br /> cost and optimal PM with contract period [0; 12 months) x [0; 120000 miles). Based on the simulation obtained the minimum expected maintenance cost is 1,939,215.77 and the optimal PM levels are 0.7 and 0.9 every 4 months or <br /> <br /> 60,000 miles.