albana, ali and Said Salim Dahda 2025. IMPLEMENTASI NEW SEVEN TOOLS DAN FAILURE MODE AND EFFECT ANALYSIS BERBASIS SIX SIGMA GUNA PENINGKATAN KUALITAS DEMINERALIZED WATER : (Studi Kasus: Unit Demin III A - PT Petrokimia Gresik). JUSTI (Jurnal Sistem dan Teknik Industri). 5, 4 (Jul. 2025), 367–376.