Hafis Ghifari R, Nazaruddin, Nur M, Isnaini Hadiyul Umam M, Suherman. PERFORMANCE EFFICIENCY ANALYSIS OF WATER TUBE BOILER MACHINE USING INPUT OUTPUT METHOD AND FMEA. jupel [Internet]. 2025Feb.8 [cited 2026May24];7(1):32-4. Available from: https://jurnalftik.unisi.ac.id/index.php/jupel/article/view/3759