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Six Sigma Essay

358 words - 2 pages

Six sigma diperkenalkan oleh Dr. Mikel Harry, seorang insinyur di Motorola pada tahun 1986. Six sigma adalah suatu metodologi sistematis yang berfokus pada faktor kunci yang mengendalikan kinerja suatu proses, mengaturnya pada tingkat yang paling baik dan menjaganya agar tetap pada level tersebut. Six sigma dapat dijelaskan dalam 2 perspektif yaitu perspektif statistik dan perspektif metodologi. Dalam perspektif statistik, six sigma adalah proses yang hanya menghasilkan 3,4 DPMO (defect permillion opportunity). Sedangkan dalam perspektif metodologi, six sigma merupakan pendekatan menyeluruh untuk menyelesaikan masalah dan peningkatan proses melalui fase DMAIC (Define, ...view middle of the document...

- Measure adalah fase pengukuran dan pengumpulan data dari proses saat ini, yang bertujuan untuk melakukan evaluasi berdasarkan goals yang telah ada. Tools yang digunakan adalah control charts, flow diagrams, diagram pareto, dan scatter diagram.
- Analyse adalah fase identifikasi akar penyebab masalah berdasarkan pada analisa data yang diperoleh dari Measure. Hasil dari analisa tersebut dapat digunakan untuk membuat solusi dalam melakukan improvement terhadap proses yang diamati. Tools yang digunakan adalah diagram sebab akibat, diagram pareto, flow diagram, control chart.
- Improve adalah fase pengembangan, pengujian dan implementasi solusi atas masalah yang telah didefinisikan. Tools yang digunakan adalah brainstorming, control diagram, flow diagram.
- Control adalah fase terakhir yang bertujuan untuk memastikan bahwa permasalahan selalu teratasi (cacat tidak muncul kembali) termasuk dengan mencari cara baru dalam mengatasi masalah yang timbul dikemudian hari. Tools yang umum digunakan adalah control chart.
Beberapa faktor penting dalam implementasi six sigma adalah sbb:
- Dukungan dari top level management.
- Tim yang hebat.
- Training yang berbeda dengan yang pernah ada.
- Alat ukur yang baru, dengan menggunakan DPMO (Defects Per Million Opportunities) yang berhubungan erat dengan Critical to Quality (CTC) yg diukur berdasarkan persepsi customer, yang bisa dibandingkan antar departemen atau divisi dalam satu perusahaan.
- Tradisi perusahaan yang baru, yaitu mempromosikan usaha untuk melakukan peningkatan kualitas secara terus menerus.

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