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Introduction: Work fatigue decreases preparedness that raises the risk of workplace accidents. Some of the factors that cause work fatigue are workers characteristics, workload and noise. The purpose of this study is to analyze the correlation between those factors and work fatigue among workers of PT Kerta Rajasa Raya in circulator loom unit. Metods: This is a descriptive observational study that uses a cross sectional approach. This study uses total sampling with a total member of 44 workers. The variables in this study are labor characteristics, including age, gender, years of service, education level, nutritional status, and medical history, which are obtained from questionnaire. Physical workload is assessed based on SNI 7269-2007. Mental workload is measured using NASA-TLX questionnaire. Noise is measured using Sound Level Meter. These variables are the independent variable. The dependent variable, on the other hand, is work fatigue, which is measured by reaction timer. Data are analyzed using Spearman correlation coefficient test (Spearman rho). Results: The results show that 27 workers (61.4%) experienced mild work fatigue and one labor (2.3%) experienced moderate work fatigue. Conclusion: The study concludes that mental workload has the strongest correlation with work fatigue (ρ = 0.509), while medical history has the weakest correlation with work fatigue (ρ = 0.034). Keywords: mental workload, noise, reaction timer, work fatigue

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. 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. It is an observational and a cross-sectional study based on research time. 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. Primary data obtained through observations and interviews which afterward presented in the form of tables and diagrams to be analyzed descriptively. The result showed that there were 6 procedures with 24 potential hazards and 24 occupational risks in the fabrication process tank 42-T- 501A. 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. Finally, this study concludes that the dominant risk in the fabrication plate process tank 42-T-501A is high risk (45%). 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.Keywords: hazard identification, risk assessment, fabrication plate

Benzene is a hazardous ingredient for health. Benzene is used as a latex glue solvent in the shoe industry. The purpose of this study was to analyze the relationship between benzene exposure with trans, trans-muconic acid and the blood profile of shoe workers in Romokalisari Surabaya. This study is a cross-sectional study conducted in the shoe industry in Romokalisari Surabaya with a number of research subjects of 20 shoe workers. Data collection was carried out by measuring benzene levels conducted at 8 measurement points in Surabaya Romokalisari, taking workers' blood, measuring body weight and conducting interviews with respondents. Data were analyzed using correlation tests. The results showed that there was no relationship between benzene levels with t, t-MA (p-value = 0.205), there was no relationship between benzene RQ and t, t-MA (p-value = 0.271) and there was no relationship between the ECR and blood profile of workers in Romokalisari. There is no correlation between benzene levels and t,t-MA, RQ and t,t-MA and there is no relationship between the ECR and all the profile parameters of the blood workers in Romokalisari. Benzene, Blood Profile, Shoe Worker, t,t-MA

There are millions of workplace accidents in the world with the loss of hundreds of billions annually. One of the direct causes of accidents due to unsafe action. It stems from the lack of control by the management and the basic causes in the form of individual factors. This study is conducted to look at the factors correlated with unsafe action in the Department of Rolling Mill PT. X Sidoarjo. The research was conducted by observation using cross-sectional design and a quantitative approach. Questionnaires were administered to 70 respondents who were drawn using simple random sampling technique. The variables studied were safety inspection, knowledge, and unsafe action. Data was presented in the form of frequency distributions and cross-tabulations then statistically analyzed using Spearman correlation. The study was conducted using α of 0.05. The results showed that the respondents had a good knowledge, safety inspection in PT. X had been executed well, and had a lower category of unsafe action. There were a correlation between knowledge with unsafe action (p= 0.028; r= -0.262), and a correlation between safety inspection with unsafe action (p= 0.015; r= -0.288). It can be concluded that the higher knowledge and safety inspection, the unsafe action would be lower. Keywords: knowledge, safety inspection, unsafe action