The recommendation that can give is to carry out detailed mitigation of the risk of high (H) and moderate (M) categories until the risk level falls to the risk of the low (L) category before the blast furnace plant is fully operating. The results obtained by using HIRA (Hazard Identification and Risk Assessment) obtained 26 risks classified by potential hazards, namely nine risks included in the high category (H), seven risks moderate category (M) and the remaining ten risks involved in the low category ( L). and the level of risk of potential occupational hazards. This study uses an approach with the HIRA (Hazard Identification and Risk Assessment) method to determine the value of the risk of potential occupational hazards. This study aims to determine the value of the risk of work hazard potential and the level of risk of potential occupational hazards in the blast furnace division of hot metal treatment plant which is currently in the commissioning stage. Keywords: hazard identification, risk assessment, fabrication plate Examples founded in high risk category are stricken by plate, light exposure of torch, fume exposure of torch, sparks of cutting torch, light exposure of welding, fume exposure of welding, sparks of welding, explosions of sandblasting tube and explosions of sandblasting hose. Finally, this study concludes that the dominant risk in the fabrication plate process tank 42-T-501A is high risk (45%). Based on the result of risk assessment, there are 6 low risk hazards, 6 medium risk hazards, 11 high risk hazards, and 1 extreme risk hazard from the total of 24 hazards in the fabrication plate process tank 42-T-501A.

The result showed that there were 6 procedures with 24 potential hazards and 24 occupational risks in the fabrication process tank 42-T- 501A. Primary data obtained through observations and interviews which afterward presented in the form of tables and diagrams to be analyzed descriptively. The object of this study focuses on PT Pertamina (Persero) RU VI Balongan’s fabrication plate, tank 42-T-501A, workers with a total population of 20 people plus 1 safety inspector.

It is an observational and a cross-sectional study based on research time. This study aimed to identify and assess occupational risk in the fabrication plate process, tank 42-T-501A, at PT Pertamina (Persero) RU VI Balongan. HIRA is a process to identify all risk factor in a company then attempt to quantify the risk and determine whether it is acceptable or not.

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