JIT – Just in Time is a part of Toyota Production System, yes its originated in Japan.
In an overall it looks like more focusing on Inventory Management, but in practical the approach will make other issues visible and also towards solving the same.
Any approach or a concept needs a foundation, same way JIT also requires following Pre requisites to make it efficient.
Pre requisites:
1) Awareness about JIT
2) 5S
3) Flow Manufacturing
4) Levelling
5) Standardized Operations
In another view all above are Primary Prerequisites and to support the primary prerequisites, secondary prerequisites are as follows:
1) Visual Management
2) Optimized Man power
3) Multiskilled Operator
4) Kanban System
5) SMED / Quick Changeover
6) Zero Defect / Quality Awareness
7) Human Autonomation / JIDOKA
8) Maintenance – PM & AM
9) Safety / Zero Risk
For ease understanding, summarized as below:
In Brief, take care all the anomalies related to "reducing the phase of process flow and also the reverse flow".