04-10-2010, 11:06 AM
MRP & JIT integartion (09cad14).ppt (Size: 783 KB / Downloads: 199)
This article is presented by:
Ankit P. Sarvaiya
Manufacturing planning & control :Integration of MRP & JIT
INTRODUCTION
+In simplest form, 'the manufacturing process' is a composition of the material flows.
+Both Material requirements Planning (MRP) and Just-in-Time (JIT) are designed to manage the flow of materials, components, tools, and associated information.
+The entire manufacturing systems from purchasing to shop floor management can be controlled based on either MRP or JIT systems. Therefore, MRP and JIT systems are powerful management tools to determine success or failure of the manufacturing system.
+Considers general, discrete, multi-stage, production inventory system (MS-PIS) with multiple machines at each stage that manufacture multiple products. The MS-PIS is very important because it is by far the most common type of manufacturing systems.
+In the MS-PIS, each product or part requires one or more operations to be processed at some designated machines or work centers. Different machines can be used to perform the same operation; however, they may possess different setup times and per unit processing times, as well as different per unit time costs.
MRP vs. JIT
+'MRP' is used interchangeably for either Material requirement Planning (MRP) or Manufacturing Resource Planning (MRP II). the basic mechanism of the MRP and MRP II systems, the time-phased closed-loop material or resource preparation process, remains the same.
+'JIT' is defined as 'the basis of Toyota production system on which the right parts are needed in assembly line at the time they are needed and only in the amount needed' to achieve 'the absolute elimination of waste’.
+The scope of JIT system reaches every function such as product and process design, human resource management, MPC, and physical distribution