Jurnal Engine: Energi, Manufaktur, dan Material
Vol. 9 No. 2 (2025)

Upaya Pengendalian Kualitas pada Proses Produksi Roti Tawar dengan Statistic Process Control (SPC) dan Failure Mode and Effects Analysis (FMEA) (Studi Kasus Pabrik Roti RV)

Wahyudi, Rizqi (Unknown)
Vebriyanti, Ria (Unknown)



Article Info

Publish Date
08 Nov 2025

Abstract

RV Bakery faces challenges in maintaining product quality due to fluctuating defect rates, particularly in white bread production. This issue has the potential to undermine customer trust and result in market losses. This study aims to analyse defect levels, identify the root causes of defects, and develop corrective solutions to reduce product defects. The methods employed include Statistical Process Control (SPC) to statistically monitor production process variations and Failure Modes and Effects Analysis (FMEA) to prioritize corrective actions based on Risk Priority Number (RPN) values. The 5W+1H approach was used to formulate improvement steps. The analysis results revealed that burnt defects dominated at 78% compared to collapsed defects at 22%. Through control charts, it was found that burnt defects exceeded the Upper Control Limit (UCL) at two points, specifically on October 15 and 17, 2024. The root causes of defects were identified using a cause-and-effect diagram, encompassing human, material, machine, and method factors. Corrective measures included adjusting baking time using timers, utilizing thermometers to ensure stable oven temperatures, and implementing stricter Standard Operating Procedures (SOP). The implementation of these improvements significantly reduced the number of defective products, with defect rates consistently remaining within control limits.

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Journal Info

Abbrev

Jurnal_ENGINE

Publisher

Subject

Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Description

Jurnal Engine: Energi, Manufaktur, dan Material is registered with ISSN 2579-7433 (online) on The Indonesian Institute of Sciences (LIPI). This journal is under publishment of the Mechanical Engineering Department, Universitas Proklamasi 45 Yogyakarta. It is a scientific journal focusing on Energy, ...