Refining a Workload Control (WLC) concept: a case study

The paper focuses on refining a Workload Control (WLC) concept to improve the applicability of the approach to the shop characteristics found in practice. This is a two-stage process leading to significant conceptual refinements to a key WLC methodology. The first stage focuses on the development of a Decision Support System (DSS) based on a WLC concept designed for Make-To-Order (MTO) companies. Refinements made include changes to the backwards scheduling procedure and the way in which jobs are released onto the shop floor. The second stage focuses on the process of implementation. Using a case study of a MTO company, the paper describes the strategy taken to overcome a number of prerequisites to the successful implementation of a Production Planning and Control (PPC) concept. Issues addressed include grouping machines and determining capacities. This case study adds to the available literature by looking specifically at implementing WLC from the customer enquiry stage, while the case study experience also provides further refinements to the WLC concept.

[1]  Hans-Peter Wiendahl,et al.  Load-Oriented Manufacturing Control , 1994 .

[2]  Gerard Gaalman,et al.  Grouping machines for effective workload control , 2006 .

[3]  Martin Land,et al.  Workload control concepts in job shops A critical assessment , 1995 .

[4]  S. T Enns,et al.  The effectiveness of input control based on aggregate versus bottleneck work loads , 2002 .

[5]  Brian G. Kingsman,et al.  A Decision Support System for Job Release in Make‐to‐order Companies , 1991 .

[6]  Linda Hendry,et al.  Alternative order release mechanisms: a comparison by simulation , 1994 .

[7]  Gerard Gaalman,et al.  The effect of information on workload control , 2003 .

[8]  Brian G. Kingsman,et al.  Modelling input-output workload control for dynamic capacity planning in production planning systems , 2000 .

[9]  Brian G. Kingsman,et al.  The relative contributions of input and output controls on the performance of a workload control system in Make-To-Order companies , 2002 .

[10]  I. Tatsiopoulos.  A microcomputer-based interactive system for managing production and marketing in small component-manufacturing firms using a hierarchical backlog control and lead time management methodology , 1983 .

[11]  Linda Hendry,et al.  Production planning for an artists studio -- A case study , 1993 .

[12]  Brian G. Kingsman,et al.  Customer Enquiry Management: Part of a Hierarchical System to Control Lead Times in Make-to-Order Companies , 1993 .

[13]  Mark Stevenson,et al.  Aggregate load-oriented workload control: A review and a re-classification of a key approach , 2006 .

[14]  Wolfgang Bechte.  Theory and practice of load-oriented manufacturing control , 1988 .

[15]  Mark Stevenson,et al.  A review of production planning and control: the applicability of key concepts to the make-to-order industry , 2005 .

[16]  A. Mercer,et al.  Integrating marketing and production planning in Make-To-Order companies , 1993 .

[17]  G. Gaalman,et al.  The influence of shop characteristics on workload control , 2000 .

[18]  B. Kingsman,et al.  Production planning systems and their applicability to make-to-order companies , 1989 .

[19]  Roberto Cigolini,et al.  Order review and release strategies ina job shop environment: A review and a classification , 1997 .

[20]  Alberto Portioli,et al.  The impact of parameters setting in load oriented manufacturing control , 1998 .

[21]  Wolfgang Bechte.  Load-oriented manufacturing control just-in-time production for job shops , 1994 .

[22]  Gary L. Hogg,et al.  Workload control in the semiconductor industry , 2002 .

[23]  Brian G. Kingsman,et al.  The effect of workload control (WLC) on performance in make-to-order companies , 1998 .

[24]  Jwm Will Bertrand,et al.  Production control and information systems for component-manufacturing shops , 1981 .

[25]  R. Cigolini,et al.  An experimental investigation on workload limiting methods within ORR policies in a job shop environment , 2002 .

[26]  J. W. M Bertrand,et al.  Workload based order release and productivity: a missing link , 2002 .

[27]  Jung-Su Song,et al.  Delivery Date Decision Support System for the Large Scale Make-to-Order Manufacturing Companies: An Electric Motor Company Case , 1998 .