Value stream mapping tools

The article speaks about the seven value stream mapping tools. I would start by saying Value Stream Mapping is a tool that can be used in minimising waste in manufacturing. Wastes in manufacturing have been grouped into seven and they are overproduction, waiting, transport, inappropriate processing, unnecessary inventory, unnecessary motion and defects. It is common practice to reword these wastes so they become relevant to the type of industry seeking to define and eliminate waste. In the implementation of lean, value stream mapping is suited to start the process; it very quickly yields benefits such as improved quality, reduction in lead times, reduced inventory and better use of resources. Through the identification, separation of Value adding and non-value adding activities, users are empowered to make the necessary improvements needed to create value in the eyes of the customer
The Seven Value stream mapping tools are
Process Activity Mapping
This tool originates from industrial engineering, it studies the flow of processes, identifies wastes, and considers if the processes involved can be arranged in more efficient /simple sequence. It also considers using a better flow pattern or route and ensures that all activities involved is absolutely necessary.

Supply Chain Response Matrix
This tool originates from time compression logistics. It shows critical lead-time constraints for a process. Its Horizontal axis shows lead time for product internally and the vertical axis shows average amount of standing inventory at specific points in the supply chain thus targeting both inventory and lead time improvements. It also shows the cumulative lead time in a distribution company. It could be used in the textile, electronics, food, clothing and automotive industries.

Production Variety Funnel
This tool originates from Operations Management; it illustrates how company/supply chain operates and how the complexities can be managed. It gives an overview of a