PENGENDALIAN PERSEDIAAN DENGAN

CONTINUOUS AND PERIODIC REVIEW POLICY

BERDASARKAN KLASIFIKASI PRODUK ABC-VED (Studi Kasus : PT. Natura Laboratoria Prima)

Skripsi

Diajukan Kepada Universitas Muhammadiyah Malang

Untuk Memenuhi Salah Satu Persyaratan Akademik

Dalam Menyelesaikan Program Sarjana Teknik

Disusun Oleh :

AIDA ALMIRA IMANI

201410140311084

JURUSAN TEKNIK INDUSTRI

FAKULTAS TEKNIK

UNIVERSITAS MUHAMMADIYAH MALANG

2019

LEMBAR PENGESAHAN SKRIPSI

PENGENDALIAN PERSEDIAAN DENGAN CONTINUOUS AND

PERIODIC REVIEW POLICYBERDASARKAN KLASIFIKASI

PRODUK ABC-VED

(Studi Kasus: PT. Natura Laboratoria Prima)

Disusun Oleh:

AIDA ALMIRA IMANI

201410140311084

Menyetujui dan Mengesahkan

Malang, 23 April 2019

Dosen Pembimbing II

Dana Marsetiya, S.T., M.T.

dustri

i

KATA PENGANTAR

Puji syukur kehadirat Allah SWT, atas limpahan Rahmat dan Karunia-Nya,

sehingga penulis dapat merampungkan skripsi ini untuk memenuhi salah satu

syarat menyelesaikan studi serta dalam rangka memperoleh gelar Sarjana

Teknik.

Penghargaan dan terima kasih yang setulus-tulusnya saya sampaikan kepada

Ayah dan Ibu yang yang telah mencurahkan segenap cinta dan kasih sayang

serta perhatian moril maupun materil sehingga sampai pada titik ini. Semoga

Allah SWT selalu melimpahkan Rahmat, Kesehatan, Karunia dan keberkahan

di dunia dan di akhirat atas budi baik yang telah diberikan kepada penulis.

Penghargaan dan terima kasih penulis berikan kepada Bapak Ilyas Masudin, Ph.

D selaku Pembimbing I dan Bapak Dana Marsetya, S.T., M.T., selaku

Pembimbing II yang telah membantu penulisan skripsi ini. Serta ucapan terima

kasih kepada :

1. Seluruh dosen jurusan teknik industri yang telah memberikan ilmu

selama dibangku perkuliahan

2. Seluruh narasumber di PT. Natura yang telah membantu proses

pengumpulan data

3. Vita, Khanza dan Bayu yang selalu menjadi penyemangat saat proses

pengerjaan skripsi

4. Dian HP yang memberikan saran dan solusi dalam proses pengerjaan

skripsi

5. Teman-teman lainnya yang menjadi penyemangat dalam pengerjaan

skripsi yang tidak bisa saya sebutkan satu persatu

iv

DAFTAR ISI

HALAMAN JUDUL ............................................................................................

LEMBAR PENGESAHAN SKRIPSI .................................................................

LEMBAR ASISTENSI SKRIPSI ........................................................................

BERITA ACARA UJIAN ....................................................................................

SURAT PERNYATAAN KEASLIAN................................................................

SURAT KETERANGAN PENGAMBILAN DATA PERUSAHAAN ..............

KATA PENGANTAR ........................................................................................ i

ABSTRAK ......................................................................................................... ii

ABSTRACT ........................................................................................................ iii

DAFTAR ISI ..................................................................................................... iv

DAFTAR TABEL ............................................................................................ vii

DAFTAR GAMBAR ...................................................................................... viii

DAFTAR LAMPIRAN ..................................................................................... ix

BAB I ................................................................................................................. 1

PENDAHULUAN ............................................................................................. 1

1.1 Latar Belakang .................................................................................... 1

1.2 Rumusan Masalah ............................................................................... 2

1.3 Tujuan Penelitian ................................................................................. 2

1.4 Manfaat Penelitian ............................................................................... 3

1.5 Batasan Masalah dan Asumsi .............................................................. 3

BAB II ................................................................................................................ 4

LANDASAN TEORI ......................................................................................... 4

2.1 Persediaan ............................................................................................ 4

2.2 Fungsi Persediaan ................................................................................ 4

2.3 Klafikasi Persediaan ............................................................................ 5

2.3.1 Metode ABC ............................................................................................. 7

2.3.2 Metode VED (Vital, Essential, Desirable) ................................................ 8

2.3.3 Matriks ABC-VED ................................................................................... 9

2.4 Simulasi ............................................................................................. 10

2.5 Biaya Persediaan ............................................................................... 10

2.6 Safety Stock dan Service Level .......................................................... 11

2.7 Kebijakan Persediaan ........................................................................ 12

v

2.7.1 Continous Review Policy......................................................................... 14

2.7.2 Periodic Review Policy ........................................................................... 18

2.8 Penelitian Terdahulu .......................................................................... 23

BAB III ............................................................................................................ 25

METODOLOGI PENELITIAN ....................................................................... 25

3.1 Tahap Studi Pustaka dan Studi Lapangan ......................................... 25

3.2 Tahap Pengumpulan Data.................................................................. 25

3.3 Tahap pengolahan Data ..................................................................... 26

3.4 Tahap Analisis ................................................................................... 29

3.5 Tahap Kesimpulan dan Saran ............................................................ 29

BAB IV ............................................................................................................ 31

PENGUMPULAN DATA DAN PENGOLAHAN DATA ............................. 31

4.1 Tinjauan Perusahaan .......................................................................... 31

4.1.1 Gambaran Umum Perusahaan ................................................................. 31

4.1.2 Visi dan Misi Perusahaan ........................................................................ 32

4.1.3 Alur Pemesanan ...................................................................................... 32

4.2 Pengumpulan Data ............................................................................ 33

4.2.1 Data Permintaan dan Data Persediaan Produk Tahun 2017 ................... 34

4.2.3 Biaya Simpan .......................................................................................... 37

4.2.4 Biaya Pesan dan Backorder ..................................................................... 39

4.3 Pengolahan Data ................................................................................ 41

4.3.1 Klasifikasi ABC ...................................................................................... 41

4.3.2 Klasifikasi Vital, Essential, Desirable (VED) ......................................... 43

4.3.3 Matriks Produk ABC-VED ..................................................................... 44

4.3.4 Kebijakan Persediaan untuk Kelas I ....................................................... 45

4.3.5 Simulasi Persediaan ................................................................................ 51

BAB V .............................................................................................................. 60

ANALISA DAN PEMBAHASAN .................................................................. 60

5.1 Analisa Hasil Klasifikasi Produk ...................................................... 60

5.2 Analisa Hasil Simulasi dengan Metode Usulan ................................ 61

5.3 Analisa Hasil Simulasi Persediaan Kondisi Perusahaan dan Metode

Usulan 69

BAB VI ............................................................................................................ 71

PENUTUP ........................................................................................................ 71

6.1 Kesimpulan ........................................................................................ 71

6.2 Saran .................................................................................................. 72

vi

DAFTAR LAMPIRAN .................................................................................... 73

DAFTAR PUSTAKA .................................................................................... 110

vii

DAFTAR TABEL

Tabel 2.1 Klasifikasi VED ................................................................................. 9

Tabel 2.2 Matriks ABC-VED ......................................................................... 10

Tabel 2.3 Penelitian Terdahulu ........................................................................ 23

Tabel 4.1 Data Permintaan Produk A sampai J Tahun 2017 .......................... 34

Tabel 4.2 Data Permintaan Produk K sampai T Tahun 2017 ......................... 35

Tabel 4.3 Data Permintaan Produk A sampai T Tahun 2016 ......................... 36

Tabel 4.4 Harga Produk ................................................................................... 37

Tabel 4.5 Biaya Simpan ................................................................................... 38

Tabel 4.6 Biaya Simpan ................................................................................... 38

Tabel 4.7 Biaya Pesan dan Backorder.............................................................. 39

Tabel 4.8 Lead Time Produksi ........................................................................ 40

Tabel 4.9 Perhitungan Klasifikasi ABC ........................................................... 42

Tabel 4.10 Klasifikasi VED ............................................................................. 43

Tabel 4.11 Matriks Produk ABC-VED ............................................................ 44

Tabel 4.12 Input Data Awal Produk K ............................................................ 45

Tabel 4.13 Hasil Literasi Perhitungan Produk K ............................................. 46

Tabel 4.14 Ringkasan Kebijakan (s,Q) ............................................................ 47

Tabel 4.15 Input Data Awal Produk K ............................................................ 47

Tabel 4.16 Ringkasan Kebijakan (s,S) ............................................................. 48

Tabel 4.17 Ringkasan Kebijakan (R,S) ............................................................ 49

Tabel 4.18 Ringkasan Kebijakan (R,s,S) ......................................................... 50

Tabel 4.19 Simulasi Persediaan Produk K dengan Metode (s,Q) .................... 53

Tabel 4.20 Simulasi Persediaan Produk K dengan Metode (s,S) ..................... 55

Tabel 4.21 Simulasi Persediaan Produk K dengan Metode (R,S).................... 57

Tabel 4.22 Simulasi Persediaan Produk K dengan Metode (R,s,S) ................. 59

viii

DAFTAR GAMBAR

Gambar 3.1 Flowchart Pelaksanaan Penelitian ............................................... 30

Gambar 4.1 Alur Pemesanan PT. Natura Laboratoria Prima ........................... 33

Gambar 5.1 Total Biaya Persediaan Kategori AV ........................................... 61

Gambar 5.2 Service Level Kategori AV .......................................................... 62

Gambar 5.3 Total Biaya Persediaan Kategori BV ........................................... 62

Gambar 5.4 Service Level Kategori BV .......................................................... 63

Gambar 5.5 Total Biaya Persediaan Kategori CV ........................................... 64

Gambar 5.6 Service Level Kategori CV .......................................................... 65

Gambar 5.7 Total Biaya Persediaan Kategori AE ........................................... 65

Gambar 5.8 Service Level Kategori AE ......................................................... 66

Gambar 5.9 Total Biaya Persediaan Kategori AD ........................................... 67

Gambar 5.10 Service Level Kategori AD ........................................................ 67

ix

DAFTAR LAMPIRAN

Lampiran 1 ...................................................................................................... 73

Lampiran 2 ....................................................................................................... 75

Lampiran 3 ....................................................................................................... 76

Lampiran 4 ....................................................................................................... 77

Lampiran 5 ....................................................................................................... 78

Lampiran 6 ....................................................................................................... 79

Lampiran 7 ....................................................................................................... 80

Lampiran 8 ....................................................................................................... 81

Lampiran 9 ....................................................................................................... 82

Lampiran 10 ..................................................................................................... 83

Lampiran 11 ..................................................................................................... 84

Lampiran 12 ..................................................................................................... 85

Lampiran 13 ..................................................................................................... 86

Lampiran 14 ..................................................................................................... 87

Lampiran 15 ..................................................................................................... 88

Lampiran 16 ..................................................................................................... 89

Lampiran 17 ..................................................................................................... 90

Lampiran 18 ..................................................................................................... 91

Lampiran 19 ..................................................................................................... 92

Lampiran 20 ..................................................................................................... 93

Lampiran 21 ..................................................................................................... 94

Lampiran 22 ..................................................................................................... 95

Lampiran 23 ..................................................................................................... 96

Lampiran 24 ..................................................................................................... 97

Lampiran 25 ..................................................................................................... 98

Lampiran 26 ..................................................................................................... 99

Lampiran 27 ................................................................................................... 100

Lampiran 28 ................................................................................................... 101

Lampiran 29 ................................................................................................... 102

Lampiran 30 ................................................................................................... 103

x

Lampiran 31 ................................................................................................... 104

Lampiran 32 ................................................................................................... 105

Lampiran 33 ................................................................................................... 106

Lampiran 34 ................................................................................................... 107

Lampiran 35 ................................................................................................... 108

Lampiran 36 ................................................................................................... 109

110

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