Penelitian ini bertujuan untuk menganalisis penerapan Safety Management System (SMS) dengan pendekatan ERA Management Maturity Model (ERA MMM) pada PT X—sebuah badan usaha niaga migas nasional yang beroperasi di delapan regional. Kajian ini juga menganalisis penerapan SMS dengan Sistem Manajemen Keselamatan Migas (SMKM), SUPREME, lalu menganalisis komparasi ketiganya. Selain itu, dilakukan Analisis Siklus PDCA (Plan–Do–Check–Act) dan dilakukan evaluasi Leading–Lagging Indicator untuk memotret efektifitas ketiganya Penelitian ini menggunakan metode deskriptif kuantitatif dengan data primer berupa hasil survei ERA MMM dan data sekunder dari hasil penilaian SMKM & SUPREME serta Lagging Indicator (Atlas Keselamatan Migas dan data kecelakaan hilir migas 2024–2025). Hasil penelitian menunjukkan bahwa penerapan ERA MMM di PT X dengan hasil Maturity berada pada level Anticipating  . Dalam penerapan SMKM, PT X terkoreksi dengan nilai akhir 89% atau baik sedangkan penerapan SUPREME, PT X memperoleh nilai 81%, atau Acceptable, yang bermakna PT X menjalankan operasi dengan risiko yang telah dikelola dengan baik dan seluruh proses dan implementasi SMS memenuhi syarat minimum. Dengan membandingkan ketiganya ERA MMM menunjukkan Tingkat maturity PT X, sedangkan SMKM menunjukkan pemenuhan regulasi minimun di Industri Migas dan SUPREME menunjukkan operasional organisasi telah mengelola risiko dengan baik atau belum. Analisis Siklus PDCA menunjukkan bahwa ketiga sistem telah mengikuti siklus PDCA namun secara proporsional, setiap aspek memiliki jumlah elemen/substansi yang beragam.  Dengan mengevaluasi Leading–Lagging Indicator dalam konteks Safety Performance, SUPREME dan ERA MMM secara relatif lebih efektif menggambarkan kondisi manajemen keselamatan PT X dengan outcome kejadian kecelakaan di masing-masing regional.

This study aims to analyze the implementation of the Safety Management System (SMS) with the ERA Management Maturity Model (ERA MMM) approach at PT X—a national oil and gas trading company operating in eight regions. This study also analyzes the implementation of SMS with the Oil and Gas Safety Management System (SMKM), SUPREME, and then analyzes the comparison of the three. In addition, a PDCA cycle analysis and Leading–Lagging Indicator evaluation were conducted to capture the effectiveness of the three. This study uses a quantitative descriptive method with primary data in the form of ERA MMM survey results and secondary data from SMKM & SUPREME assessment results and Lagging Indicators (Atlas Migas and downstream oil and gas accident data 2024–2025). The results of the study indicate that the implementation of ERA MMM at PT X with Maturity results is at the Anticipating   level. In the implementation of SMKM, PT X was corrected with a final value of 89% or good while the implementation of SUPREME, PT X obtained a value of 81%, or Acceptable, which means PT X carries out operations with risks that have been well managed and all processes and implementation of SMS meet the minimum requirements. By comparing the three ERA MMM shows the maturity level of PT X, while SMKM shows the fulfillment of minimum regulations in the Oil and Gas Industry and SUPREME shows whether the organization's operations have managed risks well or not. The PDCA (Plan–Do–Check–Act) Cycle Analysis shows that the three systems have followed the PDCA cycle but proportionally, each aspect has a varying number of elements/substances. By evaluating the Leading–Lagging Indicator in the context of Safety Performance, SUPREME and ERA MMM are relatively more effective in describing the condition of PT X's safety management with the outcome of accidents in each region.