1. SISTEM PRODUKSI TEPAT WAKTU (JUST-IN-TIME PRODUCTION SYSTEMS)
Roesfiansjah Rasjidin
Teknik Industri – Fakultas Teknik
Universitas Esa Unggul

2. Penilaian Akhir UAS: 35% UTS: 30% Tugas/Quiz: 15% Kehadiran: 10%
Partisipasi kelas: 10%

3. Rencana Perkuliahan Asal, tujuan & definisi JIT
Keuntungan, perbandingan dgn sistem konvensional, dan skema JIT
Konsep 5S dan persiapan sumberdaya manusia
Sistem Tarik dan Sistem Dorong
Sistem Kanban
Produksi Lot Kecil
Reduksi Waktu Set-up
SMED dan Teknik Reduksi Waktu Set-up
Pemeliharaan dan perbaikan mesin dan peralatan
Teknologi kelompok dan sel manufaktur
Screening, pokayoke & jidoka
Leveling production
Sinkronisasi dan penyeimbangan proses

4. PENGANTAR History and Origins of JIT Definition and Objectives of JIT
JIT Benefits and Success Factors
Comparison: Conventional vs JIT Systems
JIT Scheme

6. Origins of Just-in-Time
JIT originated in Japan, post WWII
Driven by a need survive after the devastation caused by the war
JIT gained worldwide prominence in the 1970s
Japanese firms, particularly Toyota, in 1970's and 1980's
© Wiley 2007

7. Origins of JIT (cont’d)
Taiichi Ohno and Shigeo Shingo
Geographical and cultural roots
Japanese objectives
“catch up with America” (within 3 years of 1945)
small lots of many models
Japanese motivation
Japanese domestic production in 1949 – 25,622 trucks, 1,008 cars
American to Japanese productivity ratio – 9:1
Era of “slow growth” in 1970's

8. Waste: Time, Material & Resources
Bad design
Machine downtime
Unreliable supplier
Poor quality
Inefficient layout

9. Waste Elimination
Ohno devised a new system of production based on the elimination of waste.
Waste was eliminated by:
just-in-time - items only move through the production system as and when they are needed
autonomation - automating the production system so as to include inspection - human attention only being needed when a defect is automatically detected whereupon the system will stop and not proceed until the problem has been solved

10. JIT Objectives Ultimate objectives: Zero Inventory. Zero lead time.
Zero failures.
Flow process.
Flexible manufacture.
Eliminate waste.

11. JIT Definition
Just-in-time (JIT) is defined in the APICS dictionary as “a philosophy of manufacturing based on planned elimination of all waste and on continuous improvement of productivity”.  
It also has been described as an approach with the objective of producing the right part in the right place at the right time (in other words, “just in time”).  

12. JIT Benefit Summary
Improvement Aggregate percentage (3-5 years) Annual percentage Manufacturing cycle time reduction 80-90% 30-40% Inventory reductions: Raw materials Work-in-process Finished goods Labor cost reductions: Direct Indirect Space requirements reduction Quality cost reduction Material cost reduction

13. Just-in-Time Success Factors
Suppliers
Preventive Maintenance
Layout
Inventory
Scheduling
Quality
Employee Empowerment
JIT

14. Three Elements of JIT
© Wiley 2007

15. JIT and Competitive Advantage
JIT Requires:

16. JIT and Competitive Advantage
Which Results In:
Which Yields:

17. Comparison: Conventional vs JIT Systems

18. Just In Time Scheme