Determining Waste Transportation Route by Considering Operational Schedule of Collecting Points and Depot (Case Study: Nabuang Sarok Program in PT Semen Padang)

Friska, Rahma Ariqah (2023) Determining Waste Transportation Route by Considering Operational Schedule of Collecting Points and Depot (Case Study: Nabuang Sarok Program in PT Semen Padang). Diploma thesis, Universitas Andalas.

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Abstract

PT Semen Padang proposed a program called “Nabuang Sarok” for environmental sustainability to optimize the use of waste as an alternative fuel. Current system of this program is the waste are deposited by individual partners themselves to collecting point at PT Semen Padang. This system is inefficient because of direct transportation by each individual impact high in cost and low in capacity. Therefore, PT Semen Padang coordinates a pilot project to spread the collecting points at 15 elementary schools and 7 village offices of Lubuk Kilangan district. it is anticipated that the new transportation route will provide the optimal route with the lowest transportation cost and total distance. This research is conducted to determine the optimal route of waste transportation for Nabuang Sarok Program in Lubuk Kilangan District Calculations will be carried out with an exact approach (Software LINGO 19.0) and Metaheuristics (Nearest Neighbor and Tabu Search). The total route obtained through the exact solution is 18 routes with a total of Rp61,799.00 and is able to save 37%. Completion with a metaheuristic solution provides a 22% higher difference in results compared to the exact approach.

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