Case: Circuit Board Fabricators, Inc.

Case: Circuit Board Fabricators, Inc.

1.   What type of process flow structure is CBF using?
The   company   is   using   a   batch   shop   process   flow   structure.     CBF,   Inc.   bases   its   board
fabrication   process   on   the   average   job   size   or   on   its   typical   order.   This   means   that   the
company   proceeds with   the manufacturing   process   in   batches   so   as   to meet   the   specific
requirements per order. The   typical contract   that   the company currently gets   is 60 boards
per order.   However, due to persisting factory defects, they manufacture a total of 75 boards
per batch in order to compensate for 20% of the boards that they typically reject during the
process.

2.   Diagram the process in a manner similar to Exhibit 6.7
We don’t have this Exhibit in our Handouts

3.   Analyze the capacity of the process
The capacity of the flow process is at an imbalance. There is a significant amount of manual
labor in this flow process in which human error must be taken into consideration.   It appears
that some of the stations may be run by an   inefficient amount of operators.   Lastly, with 6
employees on 6 machines for the final inspection, the end of the process should not take as
long as it does.    

4.   What   is   the   impact   of   losses   in   the   process   in   Inspection   and   Final
Test?
The impact of the losses in the system is quite extensive.   It is stated that 15% of the board
are   typically   rejected   during   an   early   processing   inspection   along   with   an   additional   5%
rejected   during   the   final   testing.     This   results   in   a   production   order   increase   of   25%.  
Ultimately, the   first   inspection should not be a bottleneck of   this process and there should
not be any rejected boards in the final inspection.      

5.   What recommendations would you make for a short-term solution to
CBF’s problems?
A   short-term   solution   may   be   to   extend   the   work   day   so   that   8   production   hours   are
optimized during a 5 working...

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