Just in Time, what it means? how it developed? steps in implementing it, waste according to it.

1. Manoj Lawate

3. Introduction
• “a philosophy of manufacturing based on
planned elimination of all waste & on
continuous improvement of productivity”
• a production strategy that strives to improve a
business return on investment by reducing
1. in-process inventory
2. associated carrying costs

4. Just In Time!!! Air Traffic Control

5. Founder of JIT
• Founded by Taiichi Ohno
• A vice president of
Toyota
• Basically implemented
in Toyota plant 1950,
well established after
1970
• Well known as Toyota
Production System

6. Followers of JIT
• Adopted by General Electrical in the USA in the 1980
• Some companies referred JIT with different names;
– TOYOTA = ‘Toyota System’
– IBM = ‘continuous flow manufacturing’
– HEWLETT-PACKARD = ‘stockless production & repetitive
manufacturing system’
– GE = ‘management by sight’

7. Some Statistics …
Comparison GM TOYOTA
Assembly Hours 40.7 Hours 16 Hours
Defects per 100 Hours 130 Defects 45 Defects
Average inventory level 2 Weeks 2 Hours

8. JIT Goals…
• Eliminate disruptions
• Make the system flexible
• Reduce set up times & lead time
• Minimize inventory
• Eliminate waste
• Increase productivity
• Give the customer the products they want, when
and where they want them at the minimum cost

9. Steps in JIT
• Introduce the speed
design of process, target, use of recourses
– 1000 cars in a month, 500 workers
– 1000 cars in a week, 1500 workers
• Eliminate or Reduce Stock
zero inventory level is ideal
• Examples of KANBAN
involves a customer & a supplier
aim = to satisfy the customer’s needs

10. Steps in JIT
• Design of Plant
arranging machinery, people & activities
• Reducing & Avoiding set ups & Preventive
Maintenance
so that activity should not stopped
• Simplifying the planning
so that replacement can be possible

11. Tools of JIT
• The 7 wastes
• The 5 Ss
• Kanban Inventory
• Visual Control
• Pokayoke
• Kaizen
• Cellular Work Flow
• Standard Work Concept
• Make it Ugly
• Just Do It

12. The 7 Wastes

20. Waste according to JIT

21. Concluding JIT
• Advantage of JIT
- reduces cost of production
• Disadvantage of JIT
- it takes time to establish

22. Thank You!