Indonesian Journal of Innovation Studies
Vol. 27 No. 3 (2026): July

Waste Identification and Improvement in Raw Material Procurement Processes: Identifikasi dan Perbaikan Pemborosan dalam Proses Pengadaan Bahan Baku

Ari Vera Hardiyanti (Program Studi Teknik Industri, Universitas Pembangunan Nasional “Veteran” Jawa Timur)
Dira Ernawati (Program Studi Teknik Industri, Universitas Pembangunan Nasional “Veteran” Jawa Timur)
Nur Rahmawati (Program Studi Teknik Industri, Universitas Pembangunan Nasional “Veteran” Jawa Timur)



Article Info

Publish Date
19 Jun 2026

Abstract

General Background: Efficient raw material procurement is essential for maintaining manufacturing flow, operational stability, and supply chain performance. Specific Background: PT XYZ, a steel plate and pipe fabrication company, faced procurement inefficiencies caused by non-value-added activities, delayed supplier delivery, limited storage capacity, repeated inspection, material returns, and suboptimal warehouse arrangement. Knowledge Gap: Previous studies have widely applied Value Stream Mapping to production processes, yet limited attention has been given to raw material procurement in steel fabrication, particularly through integrated waste mapping and risk prioritization. Aims: This study aimed to identify procurement waste and formulate targeted process recommendations using Value Stream Mapping, Failure Mode and Effect Analysis, and the 5W+1H framework. Results: The current condition showed a total lead time of 482 minutes, dominated by non-value-added activities. Waiting, defect, and overprocessing were the most critical waste categories, with Risk Priority Number values of 336, 315, and 252, respectively. Future Value Stream Mapping reduced total lead time to 318 minutes, yielding a 164-minute reduction. Novelty: The study integrates VSM and FMEA to connect process visualization with risk-based priority setting in raw material procurement. Implications: The findings provide a structured basis for supplier coordination, material quality standardization, inspection simplification, administrative streamlining, and procurement efficiency in steel fabrication operations. Highlights: Initial duration decreased from 482 to 318 after redesign. Waiting, defects, and overprocessing carried the highest risk priorities. The 5W+1H framework directed supplier, quality, inspection, and administration actions. Keywords: Failure Mode and Effect Analysis (FMEA), Raw Material Procurement, Value Stream Mapping (VSM)

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Journal Info

Abbrev

ijins

Publisher

Subject

Computer Science & IT Education Engineering Law, Crime, Criminology & Criminal Justice

Description

Indonesian Journal of Innovation Studies (IJINS) is a peer-reviewed journal published by Universitas Muhammadiyah Sidoarjo four times a year. This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global ...