ABSTRACT Tamanara Corporation is one of the shoemaker company. The kind of shoe they make are wedges , high heels , and flat. They only produce the shoe based on order, it means the schedule of the shoe making process is not on a regular basis. The process were sorted out based on a production schedule as well known as the FCFS priority (First Come First Serve). The timing result of the production process with FCFS is 4982.01 minutes. The scheduling production process proposed by the method of this research is CDS (cambell cds , dudek , and smith). If the CDS method were implemented in Tamanara corp, the order should be, flat, wedges , wedges , wedges , wedges , high heels , high heels , high heels , high heels , high heels , high heels , high heels , high heels , high heels , high heels , high heels , high heels. Based on the order of the production process shows the time of as much as 4912.28 minutes. The using of CDS method on the scheduled production process in Tamanara corp shows a quicker significant result of time (69.73 minutes) Keywords: Scheduling, CDS method, FCFS method.
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ABSTRAK Perusahaan Tamanara adalah perusahaan yang menghasilkan sepatu. Jenis sepatu yang dihasilkan adalah Wedges, High heels, dan flat. Proses pembuatan sepatu yang dilakukan perusahaan Tamanara di dasarkan pada pesanan, sehingga penjadwalan proses produksinya tidak menentu (berdasarkan urutan kedatangan pesanan). Pengerjaan berdasarkan urutan pesanan lebih dikenal dengan istilah penjadwalan proses produksi berdasarkan aturan prioritas FCFS (First Come First Serve). Hasil perhitungan waktu proses produksi dengan FCFS sebesar 4982.01 menit. Penjadwalan proses produksi yang diusulkan dari penelitian ini adalah dengan metode CDS (Cambell, dudek, and smith). Apabila metode CDS dilaksanakan perusahaan Tamanara maka urutan pengerjaan yang harus dilakukan adalah Flat, Wedges, Wedges, Wedges, Wedges, High heels, High heels, High heels, High heels, High heels, High heels, High heels, High heels, High heels, High heels, High heels, High heels. Berdasarkan urutan proses produksi menunjukkan waktu sebesar 4912.28 menit. Metode CDS pada penjadwalan proses produksi di perusahaan Tamanara menunjukkan waktu proses produksi yang lebih singkat (69.73 menit) Kata-kata kunci: Penjadwalan, Metode CDS, Metode FCFS
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DAFTAR ISI
HALAMAN JUDUL............................................................................................... i HALAMAN PENGESAHAN................................................................................. ii SURAT PERNYATAAN KEASLIAN SKRIPSI................................................... iii KATA PENGANTAR ............................................................................................ iv ABSTRACT .............................................................................................................. vii ABSTRAK .............................................................................................................. viii DAFTAR ISI ........................................................................................................... ix DAFTAR GAMBAR .............................................................................................. xii DAFTAR TABEL ................................................................................................... xiii DAFTAR ISTILAH ................................................................................................ xiv
BAB I PENDAHULUAN 1.1 Latar Belakang Penelitian ................................................................................. 1 1.2 Identifikasi Masalah .......................................................................................... 3 1.3 Tujuan Penelitian .............................................................................................. 4 1.4 Kegunaan Penelitian.......................................................................................... 4 1.5 Sistematika Penulisan ....................................................................................... 5
BAB II KAJIAN PUSTAKA DAN KERANGKA PEMIKIRAN 2.1 Manajemen Operasi .......................................................................................... 7 2.2 Sepuluh Keputusan Strategis Manajemen Operasional .................................... 8 2.3 Penjadwalan ...................................................................................................... 10 2.4 Tujuan Penjadwalan .......................................................................................... 12
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2.5 Fungsi Penjadwalan .......................................................................................... 14 2.6 Metode Penjadwalan ......................................................................................... 15 2.6.1 Penjadwalan Pada 1 Mesin ...................................................................... 15 2.6.2 Penjadwalan Pada Mesin Seri .................................................................. 16 2.6.2.1 Johnson's Rule .............................................................................. 16 2.6.2.2 Cambell, Dudek, and Smith (CDS) .............................................. 17 2.6.3 Penjadwalan Pada Mesin Pararel ............................................................. 20 2.7 Pendekatan Penjadwalan ................................................................................... 20 2.8 Gantt Chart ....................................................................................................... 23 2.8.1 Karakteristik Gantt Chart ........................................................................ 24 2.8.2 Keuntungan Menggunakan Gantt Chart .................................................. 24 2.8.3 Kelemahan Menggunakan Gantt Chart ................................................... 25 2.8.4 Langkah-langkah Menyusun Diagram Gantt Chart ................................ 25 2.9 Pengukuran Waktu Kerja .................................................................................. 26 2.9.1 Performance Rating ................................................................................. 27 2.9.2 Waktu Normal .......................................................................................... 29 2.9.3 Allowance Factor ..................................................................................... 30 2.10 Penelitian Terdahulu ....................................................................................... 30 2.11 Kerangka Pemikiran ........................................................................................ 32
BAB III OBYEK DAN METODE PENELITIAN 3.1 Profil Perusahaan Tamanara ............................................................................. 36 3.1.1 Struktur Organisasi dan Uraian Tugas ..................................................... 38 3.1.2 Lokasi dan Tata Letak Fasilitas Perusahaan ............................................ 42 3.1.3 Kegiatan Produksi .................................................................................... 42 3.1.3.1 Bahan Baku .................................................................................. 44 3.1.3.2 Proses Produksi ............................................................................ 46 3.2 Metode Penelitian.............................................................................................. 50 3.2.1 Pengertian Penelitian ................................................................................ 50 3.2.2 Jenis Penelitian ......................................................................................... 51 3.2.3 Teknik Pengumpulan Data ....................................................................... 54 3.2.4 Pengolahan Data ...................................................................................... 56
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3.2.5 Langkah-langkah Penelitian ..................................................................... 58
BAB IV HASIL PENELITIAN DAN PEMBAHASAN 4.1 Data Yang Terkumpul ....................................................................................... 60 4.2 Penjadwalan Produksi Yang Dilakukan Perusahaan Tamanara........................ 62 4.3 Penjadwalan Produksi Menggunakan Metode CDS ......................................... 64 4.4 Perbandingan Penjadwalan Perusahaan Dengan Metode CDS......................... 75
BAB V SIMPULAN DAN SARAN 5.1 Simpulan ........................................................................................................... 77 5.2 Saran.................................................................................................................. 77
DAFTAR PUSTAKA ............................................................................................. 79 LAMPIRAN ............................................................................................................ 81
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DAFTAR GAMBAR Gambar 2.1 Skema Algoritma CDS ........................................................................ 19 Gambar 2.2 Gantt Chart ......................................................................................... 23 Gambar 2.3 Kerangka Pemikiran ............................................................................ 35 Gambar 3.1 Struktur Organisasi Tamanara ............................................................. 39 Gambar 3.2 Tata Letak Fasilitas Perusahaan .......................................................... 42 Gambar 3.3 Flowchart Proses Produksi.................................................................. 49 Gambar 3.4 Langkah-langkah Penelitian ................................................................ 57
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DAFTAR TABEL Tabel 2.1 Performance Rating Wastinghouse........................................................ 28 Tabel 2.2 Penelitian Terdahulu .............................................................................. 31 Tabel 4.1 Data Produksi Perusahaan Tamanara ...................................................... 60 Tabel 4.2 Waktu Pengerjaan Sepatu Masing-masing Stasiun Perusahaan Tamanara ................................................................................................ 63 Tabel 4.3 Data Proses Waktu Produksi ................................................................... 64 Tabel 4.4 Rata-rata Waktu Kerja Di Stasiun 1 Perusahaan Tamanara ................... 65 Tabel 4.5 Rata-rata Waktu Kerja Di Stasiun 2 Perusahaan Tamanara ................... 66 Tabel 4.6 Rata-rata Waktu Kerja Di Stasiun 3 Perusahaan Tamanara ................... 66 Tabel 4.7 Rata-rata Waktu Kerja Di Stasiun 4 Perusahaan Tamanara ................... 66 Tabel 4.8 Rating Factor Dan Allowance factor ...................................................... 67 Tabel 4.9 Rekapitulasi Waktu Standar Masing-masing Jenis Sepatu Di Setiap Stasiun Kerja ............................................................................. 70 Tabel 4.10 Waktu Pemprosesan Untuk K=1 ........................................................... 71 Tabel 4.11 Waktu Pemprosesan Untuk K=2 ........................................................... 72 Tabel 4.12 Waktu Pemprosesan Untuk K=3 ........................................................... 73 Tabel 4.13 Perbandingan Metode Penjadwalan Dengan Metode CDS................... 76
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DAFTAR ISTILAH CDS
= Cambell, Dudek, and Smith
FCFS
= First Come First Serve
SC
= Slack Time
SPT
= Short Proccesing Time
EDD
= Earlist Due Date
LPT
= Long Proccesing Time
CPM
= Critical Path Method
PPC
= Production Planning and Control
PERT
= Program Evaluation and Review Technique
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