Integration of a Multi-Stage Bulk Materials Acquisition System from the Viewpoint of Dock Operations

Lee, Hong Tau

doi:10.1080/10641190109353814

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…Chen and Kim (2007) suggested considering the timing of both information (when to produce and deliver) and capacity (how much to produce and deliver) simultaneously in manufacturing and supply chain activities. Timing and capacity decisions have been integrated in process industries (Lee 2001, Matthews 2006, Brandenburg and Tolle 2009). All of these authors have suggested that the scheduling of material delivery and inventory management should be modelled simultaneously, to simultaneously increase the utilisation of product capacity and service level.…”

Section: Previous Researchmentioning

confidence: 99%

An integrated modelling approach for raw material management in a steel mill

Seong

Suh

2011

Production Planning & Control

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An integrated modelling approach combining optimisation models with simulation is proposed for coordinated raw material management at steel works throughout the whole supply chain management process. The integrated model is composed of three components: ship scheduling, yard operation simulation and material blending models. The ship scheduling model determines which brands, how much and when they should be arrived, and the problem is modelled as mixed integer linear programming. The simulation model is used to simulate the whole processes from ships' arrivals to the retrieval of the materials through the berthing and unloading the raw materials. Finally, the raw material blending model is developed for determining the brand and quantity of raw materials to be used. The proposed integrated modelling approach for raw material management has been successfully implemented and applied at steelwork to provide shipping schedules and predict future inventory levels at stock yards. By coordinating all the activities throughout the entire raw material supply chain management process, this article proposes an integrated approach to the problem and suggests a guideline by the appropriate simplification. The quantitative nature of the optimisation model and simulation facilitates an assessment of the risk factors in the supply chain, leading to an evaluation of a wide variety of scenarios and the development of multiple contingency plans. Further research is expected to supplement the ship scheduling models with heuristics for the idiosyncratic constraints of maritime transportation.

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Section: Previous Researchmentioning

confidence: 99%

An integrated modelling approach for raw material management in a steel mill

Seong

Suh

2011

Production Planning & Control

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A Ship Scheduling Model for Raw Material Transportation with Yard Storage Constraints in a Steel Mill

Seong¹,

Suh²,

Kim³

et al. 2011

Journal of the Korea society of IT services

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논문투고일：2011년 04월 21일논문수정완료일：2011년 06월 11일 논문게재확정일：2011년 06월 11일 * 이 논문은 2008학년도 부경대학교 연구년 교수 지원사업에 의하여 연구되었음 (PS-2008-018). ** 부경대학교 경영학부 교수, 교신저자 *** 현대제철(주) 원료관리담당 **** 현대제철(주) 원료기획팀 A ship scheduling model is presented for the raw material transportation problem with yard storage constraints in a steel mill. The problem is formulated as 0, 1 mixed integer programming considering such constraints as loading port conditions, ship size and hold capacity, unloading conditions, and yard storage space. In addition, inventory related constraints including safety stock are taken into consideration to support the continuous operations of steel making process. The proposed model has been implemented and applied successfully to a real world problem, and its results show the improvement of performance compared to the traditional method. For example, the arrival dates of ships are determined satisfying the constraints. The total inventory level is minimized at the stock yard as a result. Also, the safety inventory level is always kept at the planning stage, and the standard deviation of total inventory level is reduced significantly. Further research is expected to develop efficient heuristics to have a better response time for even larger scale problems.

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Integration of a Multi-Stage Bulk Materials Acquisition System from the Viewpoint of Dock Operations

Cited by 2 publications

References 11 publications

An integrated modelling approach for raw material management in a steel mill

An integrated modelling approach for raw material management in a steel mill

A Ship Scheduling Model for Raw Material Transportation with Yard Storage Constraints in a Steel Mill

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