Dina Natalia Prayogo
Fakultas Teknik Universitas Surabaya

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PERANCANGAN DAN PENERAPAN LEAN MAINTENANCE MANAGEMENT DI PT. HAPETE SURABAYA Stevan Wijaya; Dina Natalia Prayogo; Mochammad Arbi Hadiyat
CALYPTRA Vol. 7 No. 2 (2019): Calyptra : Jurnal Ilmiah Mahasiswa Universitas Surabaya (Maret)
Publisher : Perpustakaan Universitas Surabaya

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Abstract

PT. Hapete is a company engaged in manufacturing yarn and rope. PT. Hapete has three production divisions, namely Doubling, Twisting and Winding. Winding division been the focus of research because it has the largest engine damage frequency in the company. The purpose of this study is to determine the optimal maintenance schedule that takes into age of the components and cost as well as designing lean maintenance systems to minimize waste and improve the efficiency of maintenance activities. The result of the calculation of maintenance value stream map (MVSM) shows the range of maintenance efficiency before and after repairs are respectively 19-35% and 27-42% with an average increase of 7.89%. Increased maintenance efficiency is affected by the implementation of 5S in the workshop and spare parts warehouse. Conditions workshop and warehouse tidy with clear instructions make it easy for workers looking for a tool or component is needed, thus shortening the delay that occurs during engine repairs done. For the calculation of overall equipment effectiveness (OEE) shows the average value of OEE before and after repairs are respectively 77.78% and 84.74% with an average increase of 6.96%. Increasing the value of OEE is affected by the implementation of new work instructions and standards by operators and mechanics, autonomous maintenance by operators, as well as the training undertaken to improve the ability of the operator to operate the machine. Such repair can improve the performance of workers and machines that have an impact on increasing the effectiveness.
PERBAIKAN TATA LETAK PARKIR MOBIL DENGAN SIMULASI DI STASIUN KERETA API GUBENG BARU SURABAYA Aillen Yovita; Indri Hapsari; Dina Natalia Prayogo
CALYPTRA Vol. 7 No. 2 (2019): Calyptra : Jurnal Ilmiah Mahasiswa Universitas Surabaya (Maret)
Publisher : Perpustakaan Universitas Surabaya

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Abstract

The problem of parking space of Gubeng Baru Train Station Surabaya based on observation is the bottle neckat certain point which cause the smooth flow of vehicle become obstructed so that time in the parking become longer. The purpose of this research is to improve the smooth flow of vehicles entering and exiting the parking lot of Gubeng Baru TrainStation Surabaya. To improve the smooth need improvement of vehicle flow and layout. This can be done by drawing the layout and the flow of vehicles in the parking lot of the initial conditions and then takingthe time data of each process. From the data is processed to get the distribution data to be used in the ProModel. After that, make the layout and flow of the proposed vehicle then take the data of each time the fastest process in real conditions so that it can describe the proposed conditions that have been implemented. Results from both simulations, compared to find out which conditions are better. From the simulation results obtained the average time of looking for initial conditions conditions 1,536 minutes and the conditions of proposal 0.737 minutes. While the average results of out-time parking at the beginning of 4,085 minutes and the conditions proposed 3.582 minutes. Such time savings, causing the average vehicle entering the parking lot of 48.96%. This shows the proposed condition is better than the initial conditions.