The Real Meaning of Lean
Waste is everywhere at your in-plant, impeding your quest for efficiency. Lean manufacturing can help you eliminate that waste, improve your productivity and stay alive in these tough economic times.June 2009 By David Jones
Many credit Henry Ford for inventing the Lean concepts. Others say you have to go back to the Greek or Roman Empires. Wherever it started is interesting, but somewhat academic. What is important is how to use this powerful methodology and philosophy to improve any organization. Whether it's an in-plant, a hospital or a government agency, all can use Lean to give a better quality product or service at a low cost with on-time delivery.
The most famous organization utilizing Lean is The Toyota Motor Manufacturing Co. Toyota has been practicing and perfecting the concepts for more than 50 years and still maintains the continued improvement process. So if you are looking for a quick fix solution, Lean is not for you. But then again, we have seen what quick fixes and short-term thinking have done to our economy lately. Maybe we all need to have the long-term, mutual benefit mentality that is prevalent at Toyota.
There are many facets to Lean, but for simplicity let's take a look at some fundamentals. First, let's talk about the concept of non-value added (NVA). In Lean this means an activity that does not change the fit, form or function of a product or service but utilizes resources and therefore increases costs to the customer. These NVA are all classified as waste.
An example in the printing world might be an operator searching to find the correct wrench to complete a changeover or make–ready. This time spent searching for things is classified as NVA or "Waste." (Toyota uses the Japanese term "muda.")
Other examples might be running excessively large batches through a process, creating situations where material or work in process (WIP) has to be constantly moved around and/or held in storage prior to completion. Meanwhile downstream processes are waiting for completed products to work on.