Siswantoro N, Priyanta D, Risnavian ADR, Zaman MB, Pitana T, Prastowo H, Semin. HAZOP Study and SIL Verification of Fuel Gas System in ORF Using IEC 61511 Standard and FTA Method. IJMEIR [nternet]. 2025Jul.10 [cited 2026Jan.3];7(1):8-17. vailable from: https://journal.its.ac.id/index.php/ijmeir/article/view/5635