I search the way to make one complex parameter for significant impact of new production equipment: investment cost of machines and tools, quality, throughput, capacity scalability, number of product types, system conversion time, stability, maintenance, ...
I would be glad to find out other existing Procedure or Ideas.
Are there any references for this topic.
Dear Edin,
your question in interesting, but I personally need a few clarifications.
What do you mean for "complex parameter"?
Do you mean a parameter or an indicator summarizing all the parameters (or variables, it depends on the analysis I guess) of quality, throughput, maintenance, etc?
What is the angle of these impacts? Operational one ? Economic one? Both?
Moreover, does "significant" have a particular context within your question? Does it suggest changes of performances in a middle or long term horizon?
Hope these questions might be valuable and helpful.
Regards
Ilaria
Dear Ilaria,
yes it should be a parameter (one-dimensional or multi-dimensional) as a summary of all the parameters.
"Significant impacts" refers the possibility that individual criteria (investment cost of machines and tools, quality, throughput, capacity scalability, number of product types ...) be evaluated differently in terms of cost-effectiveness, capacity ... .
I have developed my own parameters and I test it currently in practice. But I was like to see if there are other methods or Idea.
Regards,
Edin
Dear Edin,
I think that all your criteria should be included in a feasibility study!
Within this toolbox you can put all your data and conclusions.
Regards,
Jacobus
You need to use a multi-criteria decision making method to get a single figure. The problem with these methods is that you need a number of machines to conduct a comparison between them, rather than using a single machines; otherwise, OEE is good.
Hello again Edin,
thank you for providing me with your clarification.
I can tackle your question from two levels.
The first one, more specific, pertains a suggestion of a single indicator already existing in common practices.
The second one, on a general level, sees suggestions of methodologies to come up with a single indicator which may suit your need.
When it comes to the first level, I do also agree on the use of OEE, provided that understanding the impact of equipment availability (maintenance), efficiency and production quality on the overall equipment effectiveness is interesting to you.
I have also developed an "energy version" of the OEE which assesses the impact that these three factors have on the total energy consumption of the equipment. You may find the paper on this in my publication list on RG (Winter Simulation Conference 2014).
When it comes to the second level of my suggestion, I also agree on the use of methods for Multi Criteria Decision Making (MCDM). I have attached a file explaining the methods of it, done by the Department of Communities and Local Government in London. It addresses a policy maker audience, but I do believe that it did its job well even for other types of users.
Hope this may help you out!
BR
Ilaria
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