Simulasi Sistem Persediaan Darah Untuk Meminimasi Total Biaya Menggunakan Metode Simulasi Kejadian Diskrit (Studi Kasus: PMI Kabupaten Tuban)

Adam, Ihsan Brillian (2025) Simulasi Sistem Persediaan Darah Untuk Meminimasi Total Biaya Menggunakan Metode Simulasi Kejadian Diskrit (Studi Kasus: PMI Kabupaten Tuban). Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Persediaan darah menghadapi tantangan unik akibat fluktuasi permintaan dan pasokan yang tidak terduga serta kebutuhan kompatibilitas antara donor dan penerima. Kompleksitas ini semakin meningkat karena jumlah pendonor yang ideal belum mencapai target dan variabilitas yang sulit diprediksi. Penelitian ini menggunakan metode discrete event simulation untuk memodelkan alur pengumpulan, penyimpanan, dan distribusi darah. Model ini mempertimbangkan karakteristik stokastik, seperti fluktuasi permintaan, waktu kedaluwarsa darah, dan ketidakpastian pasokan dari donor internal maupun pasokan eksternal. Berbagai skenario kebijakan dievaluasi, termasuk perubahan suplai internal dan eksternal, untuk menilai dampaknya terhadap total biaya dan pemenuhan permintaan. Biaya yang dianalisis meliputi overstock cost akibat persediaan berlebih, procurement cost dari unit donor lain, holding cost, dan effort cost untuk meningkatkan jumlah pendonor. Risiko tidak terpenuhinya permintaan juga diperhitungkan melalui loss cost yang dirumuskan sebagai bagian dari total biaya. Hasil simulasi menunjukkan bahwa skenario terbaik adalah pengurangan pasokan internal sebesar 5% dan pasokan eksternal sebesar 10%, atau pengurangan 5% untuk kedua pasokan. Skenario ini mengurangi kelebihan persediaan tanpa mengorbankan pemenuhan permintaan. Kebijakan lain yang melibatkan pengurangan kapasitas permintaan dari pihak eksternal hingga maksimal 40–45 kantong per minggu juga terbukti efektif dalam meminimalkan waste. Hasil penelitian ini memberikan rekomendasi kebijakan yang lebih efisien dibandingkan kebijakan yang saat ini berlaku.
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Blood inventory faces unique challenges due to fluctuations in demand and unpredictable supply, as well as the need for compatibility between donors and recipients. This complexity is further heightened by the fact that the ideal number of donors has not yet reached its target, and variability is difficult to predict. This study employs the discrete event simulation method to model the flow of blood collection, storage, and distribution. The model considers stochastic characteristics such as demand fluctuations, blood expiration time, and supply uncertainty from both internal donors and external sources. Various policy scenarios were evaluated, including changes in internal and external supply, to assess their impact on total costs and demand fulfilment. The costs analysed include overstock costs due to excessive inventory, procurement costs from other donor units, holding costs, and effort costs to increase the number of donors. The risk of unmet demand was also considered through loss costs, which were formulated as part of the total cost. Simulation results indicate that the best scenario involves a 5% reduction in internal supply and a 10% reduction in external supply, or a 5% reduction in both supplies. This scenario reduces excessive inventory without compromising demand fulfilment. Another policy involving a reduction in external demand capacity to a maximum of 40–45 blood bags per week also proved effective in minimizing waste. This study provides policy recommendations that are more efficient compared to the current policies.

Item Type:	Thesis (Diploma)
Uncontrolled Keywords:	Kedaluwarsa, Kompatibilitas Darah, Manajemen Persediaan Darah, Simulasi Kejadian Diskrit, Palang Merah Indonesia. Blood Bank, Blood Compatibility, Blood Inventory System, Discrete Event Simulation, Outdated.
Subjects:	T Technology > TS Manufactures
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Industrial Engineering > 26201-(S1) Undergraduate Thesis
Depositing User:	Ihsan Brillian Adam
Date Deposited:	31 Jan 2025 06:54
Last Modified:	31 Jan 2025 06:54
URI:	http://repository.its.ac.id/id/eprint/117299

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