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All Journal JURNAL PASTI (PENELITIAN DAN APLIKASI SISTEM DAN TEKNIK INDUSTRI) Unistek: Jurnal Pendidikan dan Aplikasi Industri Jurnal Informasi, Teknologi, Engineering, dan Sains
LIFIA CITRA RAMADHANTI
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Transportation

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ANALISIS PERENCANAAN KEBUTUHAN MATERIAL J-100 STUD BOLT & NUTS DI PT. PERTAMINA HULU ENERGI ONWJ LIFIA CITRA RAMADHANTI; SILVI ARIYANTI
Jurnal PASTI (Penelitian dan Aplikasi Sistem dan Teknik Industri) Vol 11, No 3 (2017): Jurnal PASTI
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1114.228 KB)

Abstract

Di dalam suatu Perusahaan diharapkan dapat mengatur persediaan dengan baik. Namun persediaan di Perusahaan sering mengalami permasalahan seperti terjadinya kekurangan atau kelebihan persediaan. Untuk mengatasi masalah tersebut yaitu dengan melakukan perencanaan kebutuhan. Dalam perencanaan kebutuhan dilakukan dengan peramalan dan mengetahui penerapan teknik lot sizing agar tidak terjadi ketidaksesuaian antara tingkat pemesanan dan tingkat penggunaan yang dapat memicu timbulnya overstock dan stockout. PT. Pertamina Hulu Energi ONWJ adalah sebuah anak Perusahaan PT. Pertamina Hulu Energi yang bergerak dalam bidang eksplorasi minyak dan gas khusus blok north west java dan memiliki masalah adanya ketidaksesuaian antara tingkat pemesanan dengan tingkat penggunaan pada material J-100 stud bolt & nuts. Oleh karena itu, maka diperlukan analisis perencanaan kebutuhan dengan tujuan untuk menghasilkan metode peramalan terbaik dan penerapan teknik lot sizing untuk material J-100 stud bolt & nuts. Perencanaan kebutuhan dilakukan menggunakan 18 metode peramalan dan 5 teknik lot sizing. Untuk metode peramalan yang terbaik adalah metode siklis karena memiliki nilai kesalahan (error) terkecil, dimana hasil   peramalannya digunakan untuk nilai gross requirement pada teknik lot sizing untuk mengetahui penerapan teknik lot sizing  material J-100 stud bolt & nuts. Dari hasil pengolahan data dengan 5 teknik lot sizing didapatkan  bahwa  metode silver meal, least unit cost, part period balancing dan   period order quantity   memiliki total biaya  yang sama dan terkecil  yaitu  Rp  290.472  dengan  pemesanan  yang  dilakukan  pada  setiap  periode (bulan). Terkecuali untuk metode economic order quantity yang memiliki total biaya sebesar Rp 6.095.071 dengan pemesanan sesuai nilai EOQ sebesar 463 unit.
Implementasi Metode Six Sigma DMAIC Untuk Menurunkan Defect Produk Cereal Opak Cipto Suparman; Rakay Edhiargo Toyosito; Lifia Citra Ramadhanti
UNISTEK Vol. 13 No. 1 (2026): Februari - Juli 2026
Publisher : UNIVERSITAS ISLAM SYEKH YUSUF TANGERANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33592/unistek.v13i1.8936

Abstract

This study at PT RRC aims to address the high volume of defective opaque cereal products using the Six Sigma (DMAIC) approach, combined with RCA and FMEA. Pareto analysis revealed that tough texture was the most dominant defect, contributing 70% of total defects. The initial process capability was 3.21 Sigma (DPMO 43,400). RCA and FMEA identified the root cause as manual water volume measurement based on the operator's visual estimation (RPN 448). As a solution, a semi-automatic digital flow meter system was installed. Consequently, the defect dropped to 2,575 kg/month, the RPN decreased to 128, and the process capability significantly improved to 4.28 Sigma (DPMO 2,720). This IDR 15,736,000 investment successfully saved the company IDR 329,460,000 per month
Peningkatan Akurasi Stock Opname Material Local Parts Menggunakan CCM, FMEA, dan FTA: Sebuah Studi tentang Pengendalian Persediaan dan Ketepatan Penghitungan Stok Cinta Cinta; Mochamad Eko Nugroho; Lifia Citra Ramadhanti
UNISTEK Vol. 13 No. 2 (2026): Agustus 2026 - Februari 2027
Publisher : UNIVERSITAS ISLAM SYEKH YUSUF TANGERANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33592/unistek.v13i2.8917

Abstract

Inventory is an important asset that supports the continuity of production processes in manufacturing companies. One of the common problems is the discrepancy between physical inventory and system records during stock opname activities, which may cause financial losses and reduce inventory accuracy. This study aims to identify the causes of stock opname discrepancies and improve inventory accuracy of Local Parts materials at PT Inoi Mobile Indonesia (IMI). The methods applied in this research include Failure Mode and Effect Analysis (FMEA), Cycle Counting Method Method (CCM) with ABC classification, and Fault Tree Analysis (FTA) based on the 5W+1H approach. Data were collected through observation, interviews, and company stock opname records. The results indicate that the main causes of inventory discrepancies are recording errors, operator negligence, and weak implementation of standard procedures. FMEA analysis shows that non-real-time material issuing has the highest Risk Priority Number (RPN), making it the primary improvement priority. ABC analysis reveals that category A materials contribute the highest cost impact on the company. Furthermore, FTA systematically identifies the root causes of stock discrepancies. The integration of these methods is proven to improve inventory accuracy and effectively reduce stock opname discrepancies.
ANALISIS MANAJEMEN RISIKO PADA PROSES CLEANING CIP MESIN EVAPORATING KOPI DI PT X DENGAN PENDEKATAN MITIGASI RISIKO DAN HIRARC Rakay Edhiargo Toyosito; Lifia Citra Ramadhanti; Ferry Susanto
Journal Information Technology Engineering and Science (JITES) Vol 4 No 2 (2025)
Publisher : Universitas Tangerang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63494/jites.v4i2.280

Abstract

The manufacturing industry is an industry that processes raw materials into semi-finished products and finished products. This study aims to identify and analyze occupational safety risks during the cleaning process of the coffee evaporating machine at PT X. The method used is aquantitative descriptive analysis with a risk assessment approach, using the SNI ISO 33001:2018. Data were collected through interviews, direct observation, and literature studies. The results of the research carried out include eye contact with chemical liquids, skin contact with chemicalliquids, inhalation of chemical vapors or aerosols, spills of chemical liquids in the work area, leaks in the pipeline or mantel system, incorrect use of chemicals, and inadequate ventilation in the work area
MENURUNKAN BIAYA REPAIR EQUIPMENT BLOWER CYCLONE PRODUKSI POWDER MENGGUNAKAN METODE QCC PADA PERUSAHAAN KIMIA Lifia Citra Ramadhanti; Angga Widyas Swara; Abby Yazid Bustommy
Journal Information Technology Engineering and Science (JITES) Vol 5 No 2 (2026): JITES
Publisher : Universitas Tangerang Raya

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Abstract

This research aims to reduce repair costs that arise on the production line so that the company can get maximum profits. Based on the data above, it is found that Powder Production has a very significant increase in repair costs, namely 214% from the previous year. With this very significant increase, the company needs to carry out analyzes and improvements, so that next year the company can get maximum profits. This research uses the QCC method as a tool to process data and look at the factors that cause problems to then find solutions to each root of the problem that occurs (khamaludin). The QCC method was chosen because the QCC method has structured and measurable steps in solving problems. Based on the 8 steps for implementing QCC, it is found that to reduce repair costs in powder production is to reduce downtime on the cyclone blower machine where damage often occurs to the impeller part. What is done is to modify several parts of the impeller. Then, standardization of impeller part orders is carried out. The standard is to attach images that have been approved by the maintenance team and vendor, after that ask for proof of a certificate of product authenticity, after that do a visual update in the form of photos during the work
Co-Authors Abby Yazid Bustommy Angga Widyas Swara Cinta Cinta Cipto Suparman Mochamad Eko Nugroho Rakay Edhiargo Toyosito Silvi Ariyanti Susanto, Ferry