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Wednesday, July 28, 2010

A Picture is Worth a 1000 Words

Kevin Meyer, president of Factory Strategies Group and well known blogger of Evolving Excellence, has started a new initiative in his pursuit of educating the world in Lean Thinking.  In this digital age in which virtually every cell phone has a camera Kevin has taken the opportunity to illustrate Lean through pictures.  He started photolog called Lean Pics which is a collection of photos of lean enterprise examples, concepts, ideas, and critiques. 

Some examples:

5S in Space
Lean Manufacturing Work Cells
See more examples at LeanPics.com

Mark Graban of a leanblog.org also created a photolog in April of this year called BeMoreCareful.com.  This is a collection of workplace signs and posters that don't quite get to the root cause. The site intended to show pictures of workplace signs that say things like:

Caution! 
Warning!
Be Careful!
LOOK OUT!
Don’t Forget!

These signs usually have an exclamation point and often say “Please.” Signs and warnings are about the weakest form of “error proofing,” if you can even call it that. Some find it easier to just slap up a sign, thinking the problem is solved, instead of looking for a more systemic fix.  Lean thinking recognizes that people are human and that human error is inevitable.  Instead of posting a sign Lean focuses on the process so that it’s more difficult for people to make mistakes or forget things.


Here is an example of such a sign:

Maybe the Pit Fell Into the Void After Catching Fire?
 See more examples at BeMoreCareful.com.

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Tuesday, July 27, 2010

Book Review: Clinical 5S for Healthcare

Clinical 5S For HealthcareI recently had the opportunity to review the latest publication by ENNA called “Clinical 5S for Healthcare.” This book is authored by Akio Takahara, a leading expert on Lean Healthcare and 5S for the medical field.


The book opens by explaining one of the critical challenges that face hospitals is the chronic occurrence of accidents. Medical accidents are strongly related to the overall workplace environment of the hospital and misunderstandings by humans. The author defines “human error” as follows:
“Human error is essentially a human malfunction that occurs in the process of understanding, decision-making, and carrying out an action. Humans continue to suffer from such failures no matter how much attention is given to trying to not make any mistakes.”
Clinical 5S is the foundation for promoting medical safety and improving operational effectiveness. Implementing 5S allows you to:
Reduce human errors
Prevent patient accidents
Eliminate the waste of searching
Better utilize available work space
Increase patient and colleague satisfaction
The first half of the book explains the true meaning of, and practical methodologies for, 5S implementation. There are several chapters on the procedures and key points to implement 5S in a healthcare setting. Visual management is highlighted in the section on standardize as an effective way to maintain the previous S’s. I certainly agree with this assessment. Four important aspects of visual management are:
“Visualization” allows you to see the condition of work
“Clarification” helps us draw appropriate judgments
“Marking” allows us to identify items
“Sharing Rules” creates a sharing environment
The author claims that the rationale for failing to sustain can be classified by these four causes:
No rules to follow – Manager’s responsibility
Rules not understood – Frontline leader’s responsibility
Unreasonable rules – Manager’s responsibility
Unwillingness to follow rules – Your responsibility
I believe there is more to sustaining than rules but the author is right by saying sustaining is everyone’s responsibility. In my experience people will commit themselves when the reward to do it is greater than that of departing from it.

The second half of the book illustrates a series of case studies of actual 5S implementations that have taken place at Takeda General Hospital under Mr. Takahara’s direction. The best part of this section is the lessons learned from the experience of implementing 5S.

The book has nearly 100 illustrations and photos to help you understand Clinical 5S. However I found a number of the photographs to be hard to see in the black and white format. There are also a several templates in the back of the book used at Takeda General Hospital.

Clinical 5S provides a great introduction and overview of implementing 5S. Unfortunately, it misses the opportunity to present a comprehensive system of maintaining 5S after the initial year. Commitment doesn’t happen on its own. You must create the conditions to make sustaining possible. This generally includes: awareness, enough time, structured activities, management support, rewards and recognition, and employee excitement and satisfaction.

The element of continuously improvement seems to be lost in sustaining 5S. The process of sustaining is in part a review of the ideal state and the current state. This gap in the two states provides for more improvement. It is from this improvement that we convert from reactionary thinking to preventative thinking. Given the premise of the book is to use 5S as a philosophy to reduce errors it would have been beneficial to make this link.

Ultimately, I enjoyed this book and found it to be a practical guide to implementing 5S. Clinical 5S is obviously written for healthcare but certainly could apply to similar institutions. This book is a good place to start for healthcare professionals looking to reduce errors by making their workplace less susceptible to causing mistakes and confusion.

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Monday, July 26, 2010

Reducing Wasted Motion Really Pays Off

Eliminating wasted motion is an essential element of Lean manufacturing.  Wasted motion is one of the seven (or eight, depending your school of thought) dealy wastes.  It refers to any unnecessary time and effort required to assemble a product.  Excessive twists or turns, uncomfortable reaches or pickups, and unnecessary walking all contribute to wasted motion and may put error inducing stress upon the operator.

In manufacturing processes small amounts of wasted motion can add up quickly over the course of an entire production run. This video from Assembly Services and Packaging illustrates how optimizing your production line can affect the bottom line.



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Sunday, July 25, 2010

The Characteristics of a Lean Enterprise

While Lean can be beneficially applied to any process within an organization, its greatest benefit comes when it is applied across the enterprise.  In The Machine That Changed the World in 1990, Jim Womack, et al., emphasized "that Lean thinking can be applied by any company anywhere in the world but that the full power of the system is only realized when it is applied to all elements of the enterprise." 

Over time, it can be said that an organization that implements Lean becomes a Lean Enterprise.  While there is no precise definition of a Lean Enterprise, I believe those organizations share common characteristics.  A Lean Enterprise can be defined by these 15 characteristics:

  1. Customer Focus - The external customer is both the starting point and ending point.  Maximize value to the customer.  Optimize not around internal operations, but around the customer.  Seek to understand not only the customer's requirements but also their expectations of quality, delivery, and price.
  2. Purpose - The purpose of an organization encompasses your vision (where you want to go), your mission (what you do), and your strategies (how you do it).  Focus on purpose, not tools.
  3. Organizational Alignment - You want people to understand their purpose, not just their job description or the tasks that are assigned to them.  All the people involved need to have a common understanding of the organization's purpose, and practical understanding of the consequences of failure and the benefits of success.
  4. Knowledge – People are the engine of the company, so it is vital to build knowledge and share it.  This includes explicit knowledge (like that from books) as well as tacit knowledge, involving soft skills.  Knowledge is built through the scientific method of PDCA.
  5. Questioning - Encourage a questioning culture.  Ask why several times to try to get to the root cause.  Encourage everyone to question.  "Seek first to understand, then to be understood," said Stephen Covey.
  6. Humility - The more you strive for Lean, the more you realize how little you know, and how much there is yet to learn.  Learning begins with humility
  7. Trust – Build confidence in your promises and commitments.  Building trust takes time.
  8. Empowered employees - Give frontline employees the first opportunity to solve problems.  All employees should share in the responsibility for success and failure. 
  9. Flexible workforce - As the Greek philosopher Heraclitus once said "The only constant is change."   Flexibility is the ability to react to changes in customer demand.  The key to success is to maintain redundancy and hence flexibility within the core competency.
  10. Partnership - Use teams, not individuals, internally between functions and externally with suppliers.  Employees are partners too.  As Covey says, "You must find a win-win, never win-loose, solution and if you can't you should walk away."
  11. Simplicity - Lean is not simple, but simplicity pervades.  Simplicity is best achieved through the avoidance of complexity, than by 'rationalization' exercises.
  12. Process - Organize and think by end-to-end process.  Think horizontal, not vertical.  Concentrate on the way the product moves, not on the way the machines, people, or customers move.
  13. Improvement - Continuous improvement is everyone's concern.  Improvement should go beyond incremental waste reduction to include innovation breakthrough.
  14. Prevention - Seek to prevent problems and waste, rather than to inspect and fix.  Shift the emphasis from failure and appraisal to prevention.  Inspecting the process, not the product, is prevention.  Use poka yoke to mistake proof process errors.
  15. Visualization – Visuals translate performance of every process into expected versus actual, throughout the management systems.  It is regular, frequent, and factual data driven.  Visuals provide the opportunity to quickly spot and take action at the earliest point that performance has not met what was expected.
A Lean Enterprise is not created quickly.  When a business applies lean thinking, culture, and methods throughout the entire organization and beyond its four walls to customers and suppliers a Lean Enterprise is formed.

How do you define a Lean Enterprise and what characteristics embody that concept?

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Friday, July 23, 2010

Lean Quote; July 23, 2010; Change: Isn't It Obvious

On Fridays I will post a Lean related Quote. Throughout our lifetimes many people touch our lives and leave us with words of wisdom. These can both be a source of new learning and also a point to pause and reflect upon lessons we have learned. Within Lean active learning is an important aspect on this journey because without learning we can not improve.

Feel free to share some of your favorites here as well.

"The greatest force FOR improvement is resistance to change." ~Eli Goldratt

Isn't It Obvious?Do people really resist change?  Or must we show people why this change is necessary.  Make the change effortless and riskless and they will see the positive in it.  Here is a video explaining that written by Eliyahu M Goldratt, author of The Goal to promote his NEW edition of his still relatively new book, Isn't It Obvious.




Now get working on your video to share your experience with overcoming the resistance to change.  The most popular video will get a cash prize.



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Wednesday, July 21, 2010

Organize with A Thing A Day Challenge

When it comes to organizing, starting can be the most difficult.  For most of us looking at a cluttered area can be a daunting task from the shear magnitude of the effort.

Unclutter Your Life in One Week

Over at the organization blog Unclutterer an ambitious reader is challenging people to get rid of one item a day.  In less than two months, there are more than 400 posts in the discussion with 59 people already participating in the ATAD Challenge.

The rules are simple and provide immediate rewards.  An explanation about the challenge from the creater:

The challenge is about getting rid of one object a day, for … a month? A year? It’s up to you how long you want your challenge to last.

Whether you give away, trash or donate the object is immaterial, but it must be gone from your life and space. Putting it into storage doesn’t count; though you are allowed to, say, collect the things in a box to donate them at the end of the month.

Oh, and you’re also allowed to cheat and fill your quota ahead of time, like throwing out 7 things on Monday, making that a week’s worth of ATAD.

By telling us on here what you got rid of today will not only help with the accountability issues, you’ll also help others rethink their possessions (He got rid of his xyz? Come to think of it, do I really need mine?)

There are several Lean Lessons to be learned here.  First, when confronted with a large task you should look for ways to break the tasks down into smaller more managable activities.  Second, change is difficult and requires a new habit.  Doing activities frequently (like daily) supports establishing a new habit and routine.  Overtime this becomes the new norm and part of daily life. Lastly, friendly competition can be effective in motivating individuals and teams to change their mindset.

Learning is doing so how can you use this approach in your organization or at home to make a change that you have been putting off.

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Tuesday, July 20, 2010

Common Myths of Bottlenecks

The complexity of operations has increased tremendously since the days of Henry Ford and therefore requiress more thinking.

The identification of the bottleneck becomes much more difficult as we move from the high volume low variety repetitive manufacturing scenario towards low volume high variety job shops and finally to the project environment.

In a recent post I talked about how to identify a bottleneck and leverage a constraint to your advantage.  However, there are several misconceptions or myths about bottlenecks that we need to debunk.

Consider a 6 step process for which the market demand is 13 pieces/hr.  Process "A" can produce 17 pieces/hr, "B" 14 pieces/hr, etc.

 A    Ã     B   Ã    C   Ã    D   Ã    E   Ã    F
(17)      (14)      (13)      (12)      (10)      (12)

Myth 1: Any resource whose capacity is less than the demand placed on it is necessarily a bottleneck.

Reality: A resource can be a non-bottleneck even if its capacity is less than the demand placed on it.  In the above example consider operation "B" which can produce only14 pieces/hr, 3 pieces/hr short of the demand from "A".  This is a non-bottleneck operation since it has higher capacity than the market demand.

Myth 2: The resource having highest workload is necessarily the bottleneck.

Reality: A resource can be a non-bottleneck even if its workload is highest.  Process "A" has the highest workload in the sequence.  It is a non-bottleneck operation since the next operation "B" has a lower capacity than "A".

Myth 3: Any resource with a queue before it is necessarily a bottleneck.

Reality: A resource can be a non-bottleneck even if an infinite queue forms before it.  Process "C" will have a queue before it since process "B" has a larger production rate.  However "C" is not a bottleneck since it produces at the market demand of 13 pieces/hr.

Myth 4: The resource having the biggest queue before it is necessarily the bottleneck.

Reality: A resource can be a non-bottleneck even if the queue before it is bigger than all other queues.  Operation "B" will have the largest queue in front of it but again operation "B" produces at a rate more than the demand.

Myth 5: A bottleneck resource is necessarily a critical resource.

Reality: A resource can be a bottleneck even if it is non-critical.  Process "D" is a bottleneck operation since it is lower than the market demand.  This does not mean "D" is critical or not.

The constraint in this system is the bottleneck operation "E".  Increasing the capacity at any operation other than "E" will not change the output of the system.  Understanding reality will help you define a bottleneck so that it can be easily identified in your processes.  Then you can use the 10 principles to manage a constraint to improve your system.


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