Operations optimisation in a batch job shop
Posted: Thu Aug 29, 2002 1:28 am
Hello,
I am currently performing a simulation analysis with regard to operations
research and manufacturing optimisation. The subject company in the study
manufactures and screens high reliability discrete semiconductors to
military standards.
Processing within the company can be described as a batch job-shop with
batch sizes ranging from 500 to 15K devices. Operation re-entry is very
prevalent and relatively high levels of rework also add to the sometimes
unpredictable processing times and steps. I have modeled the company from
initial parts receiving through to shipping. Due to the processing methods,
i.e. batch job-shop, planners and supervisors have great autonomy when it
comes to sequencing work orders through the work floor. I believe, from
examining some System Dynamics studies and literature, that this method may
be very beneficial, and possibly necessary, in achieving a very accurate and
representative model of the company.
I am writing this email in the hope that you may be able to give me some
further information, or point me in a direction where this area, or similar,
has been examined using System Dynamics methodologies. I would appreciate
any comments or suggestions that may help me determine the correct approach
to resolve and represent this situation using this method.
Thanking you in advance for your help.
Yours sincerely,
Lar OShea
From: "OShea, Laurence" <loshea@microsemi.com>
I am currently performing a simulation analysis with regard to operations
research and manufacturing optimisation. The subject company in the study
manufactures and screens high reliability discrete semiconductors to
military standards.
Processing within the company can be described as a batch job-shop with
batch sizes ranging from 500 to 15K devices. Operation re-entry is very
prevalent and relatively high levels of rework also add to the sometimes
unpredictable processing times and steps. I have modeled the company from
initial parts receiving through to shipping. Due to the processing methods,
i.e. batch job-shop, planners and supervisors have great autonomy when it
comes to sequencing work orders through the work floor. I believe, from
examining some System Dynamics studies and literature, that this method may
be very beneficial, and possibly necessary, in achieving a very accurate and
representative model of the company.
I am writing this email in the hope that you may be able to give me some
further information, or point me in a direction where this area, or similar,
has been examined using System Dynamics methodologies. I would appreciate
any comments or suggestions that may help me determine the correct approach
to resolve and represent this situation using this method.
Thanking you in advance for your help.
Yours sincerely,
Lar OShea
From: "OShea, Laurence" <loshea@microsemi.com>