Abstract:
The production process is currently being refined to reduce costs and increase competitiveness by eliminating waste, aiming to deliver high-quality products on time and at low cost, with a focus on waste reduction across various activities through Lean manufacturing principles. This study on the Application of Lean concepts to increase production efficiency in business groups energy and petrochemical industries aims to compare Lean applications by general business status. The research includes department managers, supervisors, and production employees from energy and petrochemical businesses in the Eastern Industrial Estate, with a sample of 100 respondents. Data were collected via questionnaires and analyzed using statistical tools, including frequency, percentage, mean, standard deviation, and one-way ANOVA. Results indicate a high overall importance of Lean applications in this sector (x̄=3.98). Specifically, Elimination (MUDA) is highly valued (x̄ = 3.98), as are Eliminating Unevenness (MURA) (x̄=3.99) and Eliminating Overburden (MURI) (x̄=3.99). Statistically significant differences were observed by business size at the 0.05 level.