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Seven Wastes of Lean

 

Seven Wastes of Lean - in the lean philosophy all unproductive activities in a process / system can be clubbed under 7 categories. These are Transportation, Inventory, Motion, Waiting, Over Production, Over Processing and Defect. These can be easily remembered by using the acronym - TIMWOOD.

Alternately, these 7 can also be remembered using WORMPIT (Waiting, Over Production, Rework, Motion, Over Processing, Inventory and Transportation).

 

 

An application oriented question on the topic along with responses can be seen below. The best answer was provided by Mohan PB on 3rd November 2017. 

 

 

Seven Wastes of Lean

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THE SEVEN WASTES OF LEAN

What is Waste in a process:

Waste is any step or action in a process that is not required to complete a process (called “Non-Value-Adding”) successfully. When Waste is removed, only the steps that are required (called “Value-Adding”) to deliver a satisfactory product or service to the customer remain in the process.

Type of waste in the process as per Lean methodology:

Waste related to Quantity:

  • Transport

  • Inventory

  • Over production

     

    Waste related to People

  • Motion

  • Waiting

  • Over processing

  • Skill underutilization

     

    Waste related to Quality

  • Defect

 

Based on my experience, I am giving the examples for each type of waste and solution recommended

1. Transport: waste is material or process movement that is not directly associated with a value adding process.

As Is process: In one of the engagement, to perform the monthly reward and recognition (R&R); team use to get the R&R certificate printed in Pune location (as per operation, having better control by maintaining the centralized process) and use to send the certificate Bangalore over office courier. Process owner use to sign it and send back the Pune certificate again using office courier.

Waste in the process: This is a clear example of Transport waste where Movement of certificate from Pune to Bangalore and back to Pune

Solution implemented: Get the Bangalore certificate printed over here in Bangalore and Pune certificate printed in Pune and get the digital signature of process owner.

 

2. Over production: Waste is producing more than needed

3. Inventory: waste is stock and ‘work in process’ more than the requirements

As Is process: in P2P process, Invoice clearing team use process job and logout at 03:00 AM IST, however the Indexing team uses to process till 5:00 AM IST. This job use to be in the Invoice clearing team queue next day.

Waste in the process: This is a clear example of Over production and Inventory waste where Indexing team is processing the more job and making it wait in Invoice processing team’s queue

Solution implemented: Performed analysis on volume flow from client and suggested multiple shift in Invoice processing team. By this, eliminated both Over production and Inventory waste.

 

4. Motion: Waste of motion is any motion of man or equipment that does not add value to product or service

5. Waiting: Waste of waiting is any idle time produced when 2 interdependent processes are not completely synchronized

As Is process: In P2P process, it was asked Indexing team to push the duplicate invoices to Invoice hold queue. And in SOP of team whore are handling Invoice hold queue were asked to trash the duplicate invoices.

Waste in the process: This is a clear example of both Motion and Waiting where unnecessarily duplicate invoice use to go to Invoice hold queue and wait there to get trashed

Solution implemented: Change the SOP of Indexing team where, if they see the duplicate invoice then trash the invoice immediately.

 

6. Over processing: Over Processing is putting more into the product than is valued by the customer.

As Is process: In segregation of duty (SOD) process, it was required to get the 5 layers of approval, before giving the application access to new joiners

Waste in the process: This is a clear example of Over processing waste where unnecessary approvals are placed and each approval had a TAT of 5 WD.

Solution implemented: Discussed with the clients and ensure that there is no business reasons for this multiple approval and removed the 3 layers of approval for new joiners.

 

7. Skill underutilization: Not using the full potential of individual

As Is process: In one of the engagement, client agreed for higher billing rate and demanded for experienced resource for there job. Due to this, company hired all the team members are SME level (by designation); however, they were required to do the processing of the job (analyst level job)

Waste in the process: This is a clear example of skill underutilization waste where experienced resources were asked to do the analyst level job i.e. processing the job with daily target.

Solution implemented: There was no solution deployed by me, however team suffered huge attrition within 6 months as team member were not exited with the job they were doing.

 

8. Defect: additional work performed on a product or service due to not processing job correctly first time

Most of my projects are around mitigating Defect and due to this, I am not giving any specific example for the same.

 

Conclusion: AS per me, in service industry, there is lot of scope for Lean improvements then pure Six Sigma projects. And also in Lean improvements elimination of 8 Waste in the process will be definitely low hanging fruits.

 

Seven Wastes of Lean are as follows:

 

WORMPIT - Waiting  / Over Production / Rework / Motion / Over Processing / Inventory / Transportation

 

1.Waiting : It is the Non Productive Time due to lack of Material, Manpower, Machine etc. This may be due to the Machine Break down, material unavailability etc.

 

2.Over Production: Producing more than Needed & Producing Faster than what is needed

 

3.Rework : Waste of Correction includes the Waste of handling & Fixing mistakes

 

4.Motion: Unnecessary movement of People & Equipment inside the Work area

 

5.Over Processing: These are the Process that doesnt add value. it may be due to Poor Product / process design

 

6.Inventory: Materials which are bought & invested, but not used or Sold

 

7.Transportation: Unnecessary movement of Material & information

 

Some of the Ways we can put this in good use are as follows:

- Over production helps us when there is an uninformed break down of the machine

- Rework helps us to correct our faults before it reaches to the customer. Once the small rework is not done in a part & if it reaches the Customer it creates big effects

-Inventory sometimes helps us when there is shortage in the outside market, so that we have ready stock in our hand

Thanks,

M.KARTHIK

 

Removing wastes always help to improve process.

few examples:

1. Cross utilization of skills always help to reduce wait time where dependency of different departments are high.

2. Setting some alert like less digit while entering mobile no etc, always help to reduce rework.

3. Keeping a track on product and based on the requirements develop product always help to reduce over production.

The Question was regarding the approach to leverage the concept of 7 wastes & put it to use in an organization. This Q was somewhat open-ended and hence I was expecting the answers to range from an elevator pitch to a comprehensive governance approach. Let me say I was really happy with the responses as many of you inked your answers with your experience.

 

The three selected answers are by Mohan PB, Rajesh Chakrabarty, and Anirudh Kund. 

 

Rajesh has provided his answer in a simple and business understandable language and touched upon the important aspects of an implementation approach for an organization. 

 

Mohan has presented a complete Lean transformation program with 15 elements and detailing around what each one of them entails. 

 

Anirudh has stated definitions of each of the wastes, provided specific examples and also ways to improve or reduce waste in these scenarios. This could be very useful in convincing a hands-on leader

 

While there are several other noteworthy responses, in my view these three are the better ones and the one by Mohan is the best as it is focused on the approach which was the core question. Congrats Mohan and all the best to everyone for the Excellence journey!

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