Lean vs MRP o MRP vs Lean
29 dicembre 2011 § Lascia un commento
Ci tengo a segnalare questo articolo trovato tra i diversi blog che seguo, in quanto tratta un argomento su cui mi trovo spesso a fronteggiare e cioè, MRP si o MRP No?
Annoso dilemma che pero in questo articolo trova una sensata e corretta spiegazione su come integrare il software alla lean.
Ci tengo a sottolineare che personalmente non ritengo che il sistema MRP sia da gettare, ma ritengo che debba essere intelligentemente integrato per politiche di approvvigionamento che necessitino di lunghi lead time, allorché può risultare efficace; fondamentale e’ sempre pero il lavoro dell’uomo e di chi controlla il sistema
I attend many Lean conferences throughout the year that focus on different areas of the supply chain. Presenters there often state how the concept of material requirements planning (MRP) is outdated and works as a detriment to Lean thinking. In addition, there have been many articles published that discuss the “Lean versus MRP” debate. I recently had an email conversation with Derek Singleton about this very topic. Derek is an enterprise resource planning (ERP) market analyst and writes for the Software Advice website. He has some interesting ideas about the use of software during the planning process, and I’d like to share his thoughts here:
Three Ways Manufacturing Software Can Adjust to Lean Principles
There’s a long-standing debate between manufacturing planning strategies. The debate is between proponents of material requirements planning software — better known as MRP software — and lean manufacturing advocates.
The crux of the dispute boils down to whether sophisticated software tools are needed to adequately plan production. Proponents of MRP software believe that today’s complex manufacturing challenges require formal planning tools to get an accurate picture of the production requirements. Lean advocates, on the other hand, argue that these planning tools actually get in the way of accurate planning because they’re too slow and transaction-intensive to pace to actual consumption, or adjust to demand fluctuations.
Three Components to Incorporate in Manufacturing Software
I see three main ways that manufacturing software can evolve to adapt to the demands of lean manufacturing. Each way focuses on bringing lean principles front and center of manufacturing software packages.
1. Make Value Stream Mapping a Core Software Component – One of the most important tools in lean manufacturing is create a value stream map to outline the flow of information and materials in the manufacturing plant. Modeling how information and materials flow through a shop floor will allow manufacturers to more easily identify production bottlenecks.
2. Monitor Cycle Times Intensely – The most important metric to know in manufacturing is how long it takes for materials to arrive on the dock and to leave in a completed product. In order to improve cycle times, these times need to be monitored and tracked. A subset of monitoring and tracking cycle times is keeping track of production status.
3. Locate Key Places to Add or Remove Inventory – While there’s ample functionality in manufacturing software for determining what to stock and how much to stock, there is little functionality to help manufacturers figure out where to stock. Functionality that can tell a manufacturer where to stock will help them figure identify the best places to protect against volatility, which will ultimately help avoid product shortages.
These are a few ways that I can see manufacturing software changing to adapt to the requirements of lean manufacturing. However, I’d like to hear your thoughts. What needs to change in manufacturing software to adapt it to lean manufacturing principles?
Wtco 
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