How to Implement Just-in-Time (JIT) Methodology

This is a philosophy of eliminating everything that involves waste or waste in the production process from purchases to distribution (by waste I mean: "everything that does not add value to the product"). It is a methodology to achieve excellence in a manufacturing company, based on the continuous elimination of waste such as inspectors, transports between machines, storage or preparation. Precisely the name of this production method indicates its work philosophy. Raw materials and products arrive JUST IN TIME, either for manufacturing or for customer service.

In the application of just-in-time, production times are considerably reduced, since by producing in small batches, defective parts are easily detected in each of the departments that enter the production process, thus keeping a control that allows at any time to modify the process that is causing the deviation.

Benefits of just-in-time

• Investments to maintain inventory decrease.
• Increases inventory turnover.
• They reduce material losses.
• Improves overall productivity.
• Financial costs are lowering.
• Savings in production costs.
• Less storage space.
• Quality problems, bottlenecks, coordination problems, unreliable suppliers, etc. are avoided.
• Rationalization of production costs.
• Obtaining little waste.
• Effective awareness of deviations.
• Decision-making at the right time.
• Each operation produces only what is necessary to meet demand.
• There are no random or disorderly processes.
• The components involved in production arrive at the time of use.

The just-in-time system is not free, that is, certain changes must occur in the factory and in the way it is managed, before the benefits can be reaped, among these changes are:

1. Stabilize production schedules.
2. Make factories more focused.
3. Increase the production capacity of manufacturing workplaces.
4. Improve product quality.
5. Cross-train workers, so that they acquire multiple skills and are competent in various positions.
6. Reduce equipment breakdowns through preventative maintenance.
7. Develop long-term relationships with suppliers to avoid disruptions in material flows.

The Just-in-Time system has four essential objectives, which are:

	Eliminate waste: In this context, it means eliminating everything that does not add value to the product. Examples of value-adding operations are processes such as cutting metal, welding, inserting electronic components, etc. Examples of operations that do not add value are inspection, transport, storage, preparation, among others.
	Seek simplicity: JIT places emphasis on the pursuit of simplicity, based on the principle that simple approaches will lead to more effective management. The first section of the path to simplicity covers two areas: – Material flow – Control
	Design systems to identify problems: The Kanban drag system brings problems to light, with JIT, any system that identifies problems is considered beneficial and any system that masks them, harmful. If we really want to apply JIT seriously we have to do two things: – Establish mechanisms to identify problems. – Be willing to accept a short-term reduction in efficiency in order to gain a long-term advantage.

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