x Continuous Improvement in Daily Work

Q: How to make Continuous Improvement Activities a part of daily work?

This question regularly is being asked when companies join a Lean– or TPM journey.

Arno Koch •  Continuous Improvement indeed should not be a project, an incidental activity or a staff-member job. So how to engage everybody in the factory to get involved in improvement activities on a daily basis?

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x How to set Availability Definitions (1)

Q: What are the time effects of the situations below to the availability and OEE calculation?

  1. Excise tax checking time (60 per shipment)
  2. Machine cleaning time for the quality of product. (10 min every hr.)
  3. External factory Electrical failure time. (uncontrollable)

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x How high should the OEE be?

Q: I have been reading in different sources about the OEE measurement and I have not been able to find any concrete agreement about what the value for OEE should be. Could you please give me any references? How high should OEE be?

Is 85% OEE world class?

I several places I read that there is no common agreement but that it is generally suggested that:

  • bellow 65% OEE should be considered unacceptable, since it represents a very low competitiveness and a great number of economic losses.
  • A value between 65 and 75% is considered as regular, only acceptable if it is being improved.
  • An OEE between 75 and 85 % means an acceptable level with slight economic losses and which can be easily improved to World Class levels.
  • A high OEE value between 85 and 95 percent is considered as good and equals World Class values; it represents a high level of competitiveness.
  • And finally, a value above 95% is considered as excellence; an excellent competitiveness and World Class values.

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x Should we calculate OEE when there is no demand?

Q: Some of our machines are not being used every day: We lack the demand of the product. So, I don’t evaluate those machines when they remain idle. But, as per my boss, those idle machines should also be evaluated (i.e. OEE =0) and should be presented in monthly graphical reports. Is it correct to calculate OEE of those machines while they are not running?

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x How to treat machines when there is no demand?

Q: Some of our machines are not being used every day on the demand of the product. So, I don’t evaluate those machines when they remain idle. But, as per my boss, those idle machines should also be evaluated (i.e. OEE =0) and should be presented in monthly graphical reports. Is it correct to calculate OEE of those machines while they are not running?

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