Skripsi ini membahas tentang penerapan Contractor Safety Management System (CSMS) di lingkungan PT ABC serta pemenuhan tahap Work In Progress pada satu pekerjaan yaitu Fabrikasi dan Penggantian Sulfur Stack unit 25-SK-101 yang Melibatkan PT XYZ dalam pengerjaannya pada November 2012. Tujuannya untuk mengetahui elemen yang dinilai dalam proses pemenuhan pada tahap Work In Progress serta faktor-faktor penyebab tidak terpenuhinya penilaian dalam tahap ini. Penelitian ini merupakan penelitian yang bersifat deskriptif dengan menggunakan metode observasi serta penilaian dengan bantuan lampiran Checklist Penilaian pada Tahap Work In Progress, antara lain Checklist HSE Work Practice, Checklist HSE Programs, Checklist Penilaian HSE Performance Indicator, serta hasil penilaian pada tahap sebelumnya yaitu Pre Job Activity. Penilaian pada Tahap Pre Job Activity PT XYZ adalah sebesar 94.7%, lalu Penilaian HSE Work Practice PT XYZ adalah sebesar 89.35%, pada Penilaian HSE Programs PT XYZ mendapat nilai sebesar 81.08%, sedangkan Penilaian HSE Performance Indicator PT XYZ mendapat nilai sebesar 83%.

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The focus of this essay is Implementation of Contractor Safety Management System (CSMS) in PT ABC and Stage of Work In Progress’s Compliance in Project Fabrication and The Replacement of Sulfur Stack unit 25-SK-101 Involving PT XYZ on November 2012. The purpose of this study is to understand the elements which assessed in Stage of Work In Progress’s Compliance, and also the non fulfilled factors of assessment in this stage. This research is qualitative descriptive interpretive with an observation method and also assessment by the required checklist related to the Work In Progress Compliance, which are HSE Work Practice Checklist, HSE Programs Checklist, HSE Performance Indicator Checklist, and also assessment from the previous stage which is Pre Job Activity. The assessment in stage of Pre Job Activity PT XYZ is 94.7%, the assessment of HSE Work Practice PT XYZ is 89.35%, the assessment of HSE Programs PT XYZ is 81.08%, and the assessment of HSE Performance Indicator PT XYZ is 83%.