Applying the theory of constraints to the logistics service of medical records of a hospital

Aguilar-Escobar, Víctor G.; Garrido‐Vega, Pedro; González-Zamora, María-del-Mar

doi:10.1016/j.iedee.2015.07.001

Cited by 32 publications

(27 citation statements)

References 26 publications

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“…Various parameters such as cycle time, rework and scrap, Work-in-Process (WIP) are observed and noted down. It helps to plan improvements that make it easier to meet customer demands [16,25]. The Current State Map (CSM) demonstrates the flow of information and material as a product goes through the manufacturing process.…”

Section: Integration Of Vsm and Tocmentioning

confidence: 99%

Hybrid Integrations of Value Stream Mapping, Theory of Constraints and Simulation: Application to Wooden Furniture Industry

et al. 2019

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This paper studies manufacturing processes in a wooden furniture manufacturing company. The company suffers from long manufacturing lead times and an unbalanced production line. To identify sources of waste and delay value stream mapping (VSM) and a discrete event simulation model is implemented. VSM is used to visualize and analyze the major processes of the company and provide quantifiable KPIs; the manufacturing lead-time and then Overall Equipment Effectiveness (OEE) settings. A discrete event simulation model is then built to analyze the company on a wider scale and provide the data required to identify bottlenecks. Building on the data gathered from the production lines and the simulation model, two-bottleneck detection methods are used, the utilization method, and the waiting time method. Then based on the comparison of the two methods a third bottleneck detection is utilized; the scenario-based method, to identify the primary and secondary bottlenecks. After the bottlenecks are identified, changes are then evaluated using the simulation model and radar charts were built based on the improved simulation model, which evaluates the effect of changes in the utilization and OEE results. This work managed to neutralize the effect of one of the main bottlenecks and minimize the effect of the other. The manufacturing utilization was increased by 15.8% for the main bottleneck resources followed by 2.4% for the second one. However, it is hard to convince the traditional administration of this small size manufacturing plant to adopt a completely revolutionizing, costly, and risky (at such level) lean manufacturing approach. This paper studies and provides a much lower in cost and verified scheme of enhancement.

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Section: Integration Of Vsm and Tocmentioning

confidence: 99%

Hybrid Integrations of Value Stream Mapping, Theory of Constraints and Simulation: Application to Wooden Furniture Industry

et al. 2019

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“…Perencanaan produksi dilakukan untuk menjamin kelancaran proses produksi guna pemenuhan tujuan yang ingin dicapai. Tantangan yang dihadapi dalam kegiatan produksi sama seperti yang dihadapi dalam kegiatan ekonomi, begitu juga dengan tujuan yang ingin dicapai, yakni peningkatanan layanan, penurunan biaya (the reduction of cost), dan meningkatkan kepuasan pelanggan [3]. Theory of constraints (TOC) memiliki prespektif bahwa semua organisasi memiliki tujuan akhir yang ingin dicapai, goal yang terukur, dari setiap elemen organisasi yang terhubung, dan dalam proses pencapaiannya terdapat keterbatasan (constraints) dari sejumlah faktor yang dapat menyebabkan penundaan atau kemacetan yang dikenal dengan istilah bottleneck [3].…”

Section: Pendahuluanunclassified

Aplikasi Pendekatan Theory of Constraints pada Maksimasi Throughput Produksi

Kristiana

Sunarni²

2018

JMTSI

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PT XYZ is a manufacturing company that produces various furniture products. The company has two product categories, first category A (as standard products) with production system is make to stock the second is category B (custom products) with production system is make to order. Production time products category B is more than longer than production time product category B. Production department’s PT XYZ arise problem when face high demand. Limitations of production’s resources cause bottleneck in lines production and inability to meet demand. In addition, inaccuracies in allocating limited resources will causing descent of throughput. Optimization of limited resources needs to be done to reach the maximum throughput. This research was conducted to find out the production resources that become constraintss in fulfilling demand, the number of each type of product must be produced at the existing capacity to achieve optimal throughput and identify and analyze solutions to problems of limited production resources. The results of the study conclude that the production resources that become constraintss are man power and man hours. The maximum throughput that can be achieved by PT XYZ by optimizing the existing available resources is Rp. 819,148,490, and there are two types of products that cannot be fulfilled. Increased production capacity can be done with several alternatives, such as over time hours, out sourcing operators (freelancers), subcontracting of production, adding man power with recruitment of new operator and their combinations. The optimal throughput is Rp 1,056. 763,100 could be obtained from using alternative resource from recruiting new operator and combination with over time capacities.

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“…In a previous study it was mentioned that analyzing whether the Theory of Constraints (TOC) could be beneficial to hospital record logistics, the study proves that this method can be applied anywhere [7]. In another study stated that the method is also very good in its use in project management, where the study discusses the system of supervision and monitoring in project management [8].…”

Section: Introductionmentioning

confidence: 97%

The Balance Improvement of Final Assembly Water Pump Business Unit Tracks Section : Case Study

et al. 2017

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Abstract. This research was conducted at an electronic field assembly company. The company implements a production system that starts from semi-finished goods to finished products. The problem of the company is the imbalance of the production trajectory. The track balance in the final assembly will affect the amount of product that can be produced. The unbalanced track conditions resulted a bottleneck condition in the material flow from one work center to the other, resulting in delay time on the production floor. The problems are caused by large cycle times, thus resulting in different production capacities for each workcenter. The implementation of the theory of constraints is to identify the existing constraints and to obtain the optimum amount of workcenter as well as to allocate elements of activity in the workcenter, thereby improving the efficiency of the production line.. In actual trajectory there are 7 work centers with track path efficiency 59,80%, balance delay 40,20%, and smoothing index 74,47. The result of balancing in the production line using theory of constraint method obtained the repair solution by number of work center as many as 5 work centers with track efficiency value 88,65%, balance delay 11,35% and smoothing index 17,07.

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Applying the theory of constraints to the logistics service of medical records of a hospital

Cited by 32 publications

References 26 publications

Hybrid Integrations of Value Stream Mapping, Theory of Constraints and Simulation: Application to Wooden Furniture Industry

Hybrid Integrations of Value Stream Mapping, Theory of Constraints and Simulation: Application to Wooden Furniture Industry

Aplikasi Pendekatan Theory of Constraints pada Maksimasi Throughput Produksi

The Balance Improvement of Final Assembly Water Pump Business Unit Tracks Section : Case Study

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