A multiple-criteria approach to dynamic cold-ingot substitution

A multiple-criteria approach to dynamic cold-ingot substitution

0.00 Avg rating0 Votes
Article ID: iaor1988584
Country: United Kingdom
Volume: 40
Issue: 4
Start Page Number: 361
End Page Number: 366
Publication Date: Apr 1989
Journal: Journal of the Operational Research Society
Authors: , ,
Keywords: scheduling
Abstract:

Bethlehem Steel’s plant at Bethlehem, Pennsylvania uses a computer-based mill-providing procedure to plan ingot requirements for the production of structural shapes and pilings. When not enough hot steel is available to meet all the ingot requirements, cold steel ingots from inventory must be substituted in order to meet the production plan. A computer system was developed that dynamically selects cold ingots to use when hot steel is not available. This system selects cold ingots based first on ingot-selection priorities, and secondly, within priorities, on several criteria. An approach was developed that assigns a penalty to each feasible cold ingot such that the priorities and multiple criteria are addressed by simply ranking the ingots based on their penalty values. Ingots are selected from the top of the ranked list, and the results are consistently acceptable to the steel-providers at the Bethlehem plant. The system improves yield and reduces material-handling costs.

Reviews

Required fields are marked *. Your email address will not be published.