Judul: Pemeliharaan pencegahan dan persediaan suku cadang untuk peralatan produksi di pabrik pengolahan kelapa sawit kertajaya
Abstrak: Plant maintenance undertaken at PKS Kertajaya is a system breakdown maintenance and preventive maintenance. Preventive maintenance is not carried out when the fresh fruit bunches processed a lot, so there will be breakdown maintenance. PKS Kertajaya does not have its own inventory concept in determining the amount of spare parts inventory. Reservation made based on estimates only based on the demand that has happened. The purpose of this study is to formulate the scheduling preventive maintenance on production equipment maintenance scheduling in a palm oil mill with an optimal cost of maintenance, to determine spare parts inventory by the number of low demand. This study conducted to get performance of production equipment maintenance using Overall Equipment Effectiveness, identifying and prioritizing equipment factory production by using Failure Mode and Effect Analysis, schedule preventive maintenance of production equipment with a total cost of optimal maintenance and spares inventory planning using the model of Economic order Quantity where demand assumed poisson distribution. Results of performance of equipment maintenance using Overall Equipment Effectiveness indicates that maintenance scheduled at a palm oil mill. Results of the Failure Mode and Effect Analysis is the ranking value Risk Priority Number to 30 components scheduled. Results of factory production equipment maintenance scheduling of oil palm is scheduling maintenance for 30 components with optimal charge at 51% level of reliability and can save as much as 17,5% of the cost without doing preventive maintenance. Results of spare parts planning is optimal total inventory cost.
Keyword: breakdown maintenance, scheduling, maintenance, planning, inventory, total cost

Judul: Penjadwalan Transportasi Tandan Buah Segar dan Tandan Kosong Kelapa Sawit (Studi Kasus di PTPN VIII Kertajaya Banten)
Abstrak: Transportation scheduling nowadays has been considered as one of important factor in efficiency of an industry production system. In a context of oil palm industry, transportation scheduling is in charge of implementation of fresh fruit bunch transportation from the field to the factory, and empty fruit bunch, as by product of fresh fruit bunch processing in factory, to the field. Research in PTPN VIII Kertajaya was done in order to meet optimization of transportation resource allocation. Transportation scheduling was implemented by considering crop scheduling and factory process scheduling. This transportation model scheduling consists of three sub models: production forecasting, crop route, and vehicle number. Data of daily production in January and February 2011 was simulated in a fit distribution and used as the basic of daily production forecasting in March 2011. Fresh fruit bunch production forecasting was used to decide the crop route, which was trip number needed to collect all fresh fruit bunches in all filed divisions. All trips needed and production time provided were input of vehicle number calculation, then these trips were scheduled in each time unit. Model validation used sMAPE and MAPE tests. Fresh fruit bunch forecasting resulted 159%, 95%, 67%, and 51% of sMAPE value for each Division 1, Division 2, Division 3, and Divison 4. It is better than current one used in the company which results 161%, 138%, 77%, and 65%. MAPE value for empty fruit bunch production forecasting is 23.41% and vehicle number forecasting is 12.43%.
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Judul: Embriogenesis ikan buta (Astyanax fasciatus)
Abstrak: Ikan buta Astyanax fasciatus adalah spesies ikan unik dari famili Characidae yang menempati perairan dalam gua di Wilayah La Cueva Chica-San Luis Potasi-Mexico. Ikan ini memiliki mata yang tereduksi (Blind Cavefish) dan warna kulit merah muda, pucat serta mengkilap.
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