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Jeff Kidner asked:

 I completed my 12th JI course last week which took place in our Edinburgh plant so I am officially training nationally now!   I am currently running a course here at Llantarnam and a question has been raised which I would like your advice on.

 The breakdowns we have prepared so far are to enable a person to quickly remember to do a job correctly, safely and conscientiously-when all is well and running. Where you have corrective actions to take when something goes wrong with the operation or machinery used for that operation-would these be covered with a separate troubleshooting breakdown or included in the breakdown for the job being taught as important steps?

Thinking about it some of these failure modes would be captured by identifying them as key points by making or breaking the job, but probably not all of the potential failure modes.


Pat Graupp answered:  

This is a great question which I haven’t gotten before. I’m copying my colleague Richard Abercrombie because he is a Lean consultant and does a lot of work like what you’re referring to. I’m sure he has more insight on this than I do.

For my part, I think you can have both: (1) a breakdown which teaches how to troubleshoot and the procedure for finding what has gone wrong, and then (2) the UPDATED breakdown of the job which needs to be RETAUGHT to include the information (Key Points) for what we learned when resolving the problem. Correcting the problem, so it doesn’t happen again, means that we have found the root cause of the problem and added countermeasures (in this case retraining) to prevent it reoccurrence.

Richard Abercrombien answered:

 The two points Pat makes are very useful.  As a problem solving reference, failure modes and the appropriate responses can be formatted as a breakdown.  Of course, the challenges is touched on by Pat’s second point; is there a countermeasure that will control or eliminate the root cause so the “trouble shooting” isn’t necessary? 

Having said that, here is what we did at a steel plant I worked at once, and you may find this example helpful.  

In a rolling mill, delays are a key performance indicator.  The operation runs 24/7 so delays drop capacity and yield, and since the furnace keeps going, costs per unit of yield go up, too.  Keeping the rolling mill running smoothly is a daily objective.  But sometimes things go wrong.  We were working a lot on improving work processes to eliminate causes of delay as much as possible.

But what do you do when a delay occurs?  Some operators were better at it than others.  So they selected the best operator and asked him to explain how he kept everything coordinated so the mill could be started quickly after the delay was resolved.  After he wrote it down it seemed a little confusing.  So I put it into a breakdown to make it more understandable.  (To see the breakdown email Steve at )  


Jeff Kidner is a Continuous Improvement Facilitator and TWI Institute JI Certified Trainer at Burton Foods in the UK.

Comments on: "TWI JI: What do you do when a delay occurs?" (1)

  1. my comment is related to the question about addressing a machine breakdown properly with a “Job breakdown”.
    I like both answers posted, especially the JR-style answer of finding the root cause (similar to the Foundations) to eliminate further problems
    The example used on page 14 of the JI participants’ guide adapts nicely to this question, and that is the mechanism I have used in the past to answer this question.

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