In-process Inventory Control in a Multi-stage Manufacturing Process Subject to Large Fluctuations in Lost Production PDF Download

Author: Thomas Quinn LeBrun
Publisher:
ISBN:
Category :
Languages : en
Pages : 206

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Author: Syed Zia Abbas Rizvi
Publisher:
ISBN:
Category :
Languages : en
Pages : 111

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The project work presented in this thesis has proposed solutions related to the control of production and work-in-process inventory in a multi-item multi-stage manufacturing system. A suitable base-stock inventory control policy is recommended to ensure that the desired service levels are maintained between production stages and for the final customers. Concept of coupling the production lines though coupling-stock under suitable assumptions is then introduced to reduce the stock levels at certain consecutive production stages. A framework for demand seasonality and characteristic analysis is also established to enable the inventory control policy to respond to seasonal variations. Monte Carlo simulation was performed on a model of chain of production stages controlled under base-stock policy for the verification of results and to study the effects of stock-outs on base-stock levels. The results of simulation study showed that overall system performance is satisfactory and desired service levels were achieved. Simulation work was also carried out to validate the line coupling concept and its performance under certain conditions. A novel Kanban based visual management system design, which is aligned with the requirements of inventory control policy, along with the material transfer batch sizes between production stages is proposed to facilitate the implementation of inventory control policy. Furthermore, capacitated shipment planning approach is proposed and implemented in form of a spreadsheet-based interface to aid planning personnel in shipment planning under the constraints provided by the inventory control policy.

Author: Sven Axsäter
Publisher: Springer Science & Business Media
ISBN: 3642516939
Category : Business & Economics
Languages : en
Pages : 270

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This paper treats a two-echelon inventory system. The higher echelon is a single location reffered to as the depot, which places orders for supply of a single com modity. The lower echelon consists of several points, called the retailers, which are supplied by shipments from the depot, and at which random demands for the item occur. Stocks are reviewed and decisions are made periodically. Orders and/or shipments may each require a fixed lead time before reaching their respective desti nations. Section II gives a short literature review of distribution research. Section III introduces the multi-echelon distribution system together with the underlying as sumptions and gives a description of how this problem can be viewed as a Markovian Decision Process. Section IV discusses the concept of cost modifications in a distribution context. Section V presents the test-examples together with their optimal solutions and also gives the characteristic properties of these optimal solutions. These properties then will be used in section VI to give adapted ver sions of various heuristics which were used in assembly experiments previously and which will be tested against the test-examples.

Author: Karim Kamareddine
Publisher:
ISBN:
Category :
Languages : en
Pages : 47

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Large pharmaceutical companies struggle to find innovative ways to reduce work-in-process inventory in their production facilities. In our research, we focus on the tradeoff between inventory and production capacity through investing in new facilities and equipment. This tradeoff will depend on the company's objectives and what it is willing to give up in return for reducing inventory. We found that increasing capacity to reduce work-in-process inventory by investing in new facilities is not always the most favorable approach in terms of net present value. However, for flexibility or lead-time improvements, it may make sense to proceed with the investment. We developed multiple scenarios considering the company's future plans to reduce inventory or grow. These scenarios provide insights into the factors that improve the attractiveness of the investments and those that do not. Our financial analysis along with the guidelines and procedures that we have developed help the sponsor company most effectively reach its goal to reduce its work in process inventory.

Author: Leroy B. Schwarz
Publisher: North Holland
ISBN:
Category : Business & Economics
Languages : en
Pages : 416

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Author: Mohamad Y. Jaber
Publisher: CRC Press
ISBN: 1420079980
Category : Business & Economics
Languages : en
Pages : 246

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As markets become more dynamic and competitive, companies must reconsider how they view inventory and make changes to their production and inventory systems. They must begin to think outside the classical box and develop a new paradigm of inventory management. Exploring the trend away from classical models based on economic order quantities to depe

Author: Roger B. Brooks
Publisher: John Wiley & Sons
ISBN: 9780470169537
Category : Business & Economics
Languages : en
Pages : 208

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Praise for INVENTORY RECORD ACCURACY "This updated version of Inventory Record Accuracy preserves its humorous and easy-to-read style. Supply chain practitioners, in traditional or lean manufacturing, will find it a helpful guide. Cleverly outlined, the rigorous yet simple process for both on-hand and on-order inventory provides accuracy levels required for real-time data systems." -Maria Teodorovic, Quality Systems Manager Weyerhaeuser Corporation "Inventory Record Accuracy is truly a practitioner's guide. The book's collection of anecdotes provides real-life insight into the potential challenges of achieving IRA, and the combination of an easy-to-read text and simple drawings makes this book an easy road map to follow on the proven path to higher inventory record accuracy." -John Dietz, Director, Manufacturing Resource Planning Lockheed Martin Space Systems "Brooks and Wilson are the experts on inventory record accuracy. Inventory Record Accuracy goes right to the core of the issues without a lot of soft-soaping. Every materials manager, stockroom manager, and cycle counting supervisor should have a copy within arm's reach." -Adrian R. Barrett, 6 Sigma Master Black Belt Caterpillar, Inc. "Excellent coverage of a fundamentally important topic. By far, the best book on the subject I've ever read. The three-phase approach to inventory record accuracy should be required reading for all manufacturing managers." -Edward W. Davis, Professor of Business AdministrationThe Darden School, University of Virginia

Author: R. N. van Hees
Publisher:
ISBN:
Category : Business & Economics
Languages : en
Pages : 396

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Author: Antony Wild
Publisher: Routledge
ISBN: 0750654589
Category : Business & Economics
Languages : en
Pages : 278

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Covering both the principles and practice of stock control, Antony Wild's guide presents practical ideas for businesses that need to improve their control and reduce their excessive inventories.

Author: Robert Hall (professeur).)
Publisher: McGraw-Hill
ISBN: 9780870944611
Category : Business & Economics
Languages : en
Pages : 356

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Book Description
Zero Inventories is the definitive work on JIT! It is written for the key people in industry--managers, engineers, staff professionals and foremen, showing how to solve inventory problems and achieve stockless production. Its wide range of topics include: forecasting and inventory control methods; material requirements planning; systems for scheduling operations in manufacturing, procurement, logistics and project planning; systems for master scheduling and corporate planning; organizational problems of installing and managing new systems.