Becoming lean without reducing mura

In the last post we covered the importance of balancing muri and mura to remove muda (waste) in the process. But what do you do when mura or unevenness in production cannot be controlled?

We often hear manufacturers say that production volumes change everyday sometimes every hour as the customer demand is constantly changing. In today's world the business has to do what the customer wants or be prepared to face consequences of lost sales, lost customer etc.
Most customers today demand what they need when they need it. Businesses that can cater to this need survive.
So how does the business remain lean inspite of these flucutations in production volume?

The business can be ready for such fluctuations by accounting for it beforehand. The manufacturer can plan for this by taking 3 simple steps...
1. Carry a small finished goods inventory to satisfy the customer demand in case the demand suddenly rises. The question becomes how much? Carry enough inventory to allow production to run smoothly without stressing the plant people and equipment. Carrying too much inventory is a form of waste and not recommended in a lean system. Too much inventory will hide problems and tie up cash in form of product cost, floor space occupied to store the product etc.

2. Plan for producing quantities that do not push the plant over limits. This will allow the plant to pace production so that the total cycle time is met. Process steps can be run below takt time to meet customer demand.

3. Leadership should think ahead with the foresightedness of planning for leveling the production load so that customer demand is met.

Do you experience irregularities in production? How do you manage such production irregularities and being lean at the same time?
Write to us at info@sybeq.com about your experiences and challenges in your lean journey.

Lean System requires eliminating Muda, Muri, Mura

We all have heard that lean is all about waste (or muda) elimination. Muda is any activity that does not add value. Lean methodology requires eliminating all such wasteful activities. Almost every organization that implements Lean talks about waste elimination.
Yes, removing waste (muda) is the most important aspect of Lean implementation. However, equally important are Muri and Mura. Actually Muda, Muri and Mura work together in a Lean enterprise.

So what is Muri and Mura?
Muri is pushing people or machines over the limit causing breakdown or defects.
Mura is unevenness in production due to fluctuations causing irregularities in production volumes. Fluctuations could be external or internal to the enterprise. External fluctuation is due to variation in customer demand whereas internal fluctuation is due to machine downtime, missing parts or people required to operate machines or defects.

Lean implementation requires a balance between Muri and Mura to remove Muda.

Have you thought about Muri and Mura in your lean implementation? How do you balance overburdening people/equipment and production irregularities to remove waste?
Write to us at info@sybeq.com about your lean journey.