Being able to understanding and identify waste then requires removing that waste. The initial question then is where and how to begin implementing lean supply chain management.
Three points must be recognized. First, lean requires a strategy. It is not just a supply chain program or just a manufacturing program. It is a paradigm that requires a change throughout the organization if it is to be truly successful in removing waste and adding value. Organizations must look at everything differently.
Second, lean goes beyond the four walls of the warehouse or factory. It goes beyond the organizational boundaries of the company and extends to suppliers and to customers. This breadth of scope is why it requires strategy for success.
Third, there are lean principles that must be the basis of the lean supply chain. Namely-
1) Determine value from the view of the customer, not the view of the company.
2) Make the product and information flow.
3) Pull product; do not push it.
4) Manage toward perfection with continuous improvement.
CHALLENGES. Supply chain management, especially developing and implementing lean supply chain management, has challenges that must be acknowledged. These are in addition to the “usual” company issues with lean, such as lack of implementation know-how, resistance to change, lack of a crisis to create urgency, gaining resources and commitment, and back-sliding.
Sometimes these challenges are not addressed or appreciated with lean SCM. These include–
- International sourcing-Procuring finished goods or raw materials in China, India, Germany, Brazil and elsewhere outside of North America creates a significant obstacle to lean. The order-to-delivery time is long. Time is a waste, and it compounds the inventory waste issue by making firms buffer and carry more inventory than is needed to compensate for the time. Being lean with a 20-40 day transit time brings a unique test to developing lean SCM
- Accounting-Standard cost accounting and generally accepted accounting does not recognize waste as lean does. Not having financial support to waste and value identification makes lean difficult to implement and sustain. Inventory and time are not regarded as lean does. Inventory is not an asset for lean. Accounting systems do not recognize time. Rework is not treated the same with accounting.
- Organization silos-Supply chain management and lean are processes that cross organization boundaries. Implementing a process that goes horizontal on a vertical and functionally defined organization creates gaps in both processes. These gaps create areas where waste can develop and where removing it can be difficult.
- Number of firms-There are many suppliers and many logistics service providers in a supply chain. Some of these are visible; some are less visible. Many suppliers or logistics service firms do not practice lean. Taking lean outside the four walls of the company into other firms adds to the time and complexity of implementing and becoming lean.
HOW TO BEGIN. The initial step to implementing lean is to evaluate and to measure the present supply chain. You have to know where you are to begin the long journey of continuous improvement. Value stream mapping (VSM) is a visual tool to define the current state of a company’s supply chain, to identify waste and to lay the foundation in determining the future state flow of the supply chain.
Value stream mapping (VSM) identifies waste in supply chains, especially with regards to time and inventory. Initial VSM efforts include defining the present value stream for product families, those that share common operations or have large volume impact, either units or dollars, or other delineator as determined.
With mapping the current supply chain state, you can then draw on the various lean tools to design the future supply chain flow. This future state should include the infrastructure to support it-training, culture, quality methods, accounting systems, and investment policies.
LEAN TOOLS. There are tools to becoming lean. Each have differences as to ease of use, time to implement, benefits and risk.
There is no “one” tool for lean SCM. Various tools can be used in different areas and in different sequences to add value and reduce waste.
CONCLUSION. Often, there are complementary or supporting processes with lean supply chain management. The additional processes may include Strategic Sourcing to manage supplier performance for critical and important items; Strategic Customer to gain the needed viewpoint of key customers; and Sales and Operations Planning to blend the strategic sourcing and customer with the tactical day-to-day supply chain management.
Getting started with lean and sustaining it with continuous improvement is not easy. Lean takes time, years, to accomplish. There is no quick fix to being lean. Often the waste has become incorporated into the daily operation company-wide and is accepted as part of doing business. In some instances, there may be too much instability in a supply chain to begin lean. The first step is then to increase stability before beginning lean.
But the benefits can be significant from gaining market share, reducing capital tied up in inventory, increasing profitability, improving customer service, increasing capacity and taking time out of the entire company’s way of doing things.
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LTD provides logistics consulting for strategic and tactical needs. The scope of capabilities is broad–supply chain management, outsourcing, transportation, warehousing, inventory management, and more for both domestic and international needs. Clients include retailers, wholesalers/distributors, manufacturers, logistics service providers and 3PLs.
