Chapter 23

Lean Materials

Lean Material Basics

MRP/ERP

We now have very sophisticated material requirement planning (MRP) and enterprise resource planning (ERP) software systems to help manage purchases of goods and services and tie all our plants and suppliers together worldwide. There are internet-based supply chain services, and technology continues to advance offering higher-level planning systems (Figure 23.1). However, drawbacks come with these advanced systems. The systems usually are not capable of planning to the hour, often lack data accuracy, require large investments, both in capital and hours for training and implementation, and require continuous maintenance. Many companies have set up their procurement systems and supply chains ...

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