The Relationship between Ventilation with Excess Cancer Risk (ECR) of Benzene at the Shoe Home Industry in Romokalisari Surabaya

The objectives of this study were to identify the relationship of Ventilation with Excess Cancer Risk (ECR) of benzene at the shoe home industry in Romokalisari, Surabaya. This researchwas observational, cross-sectional study 10 workers as the total population. The data was analysed using cross tabulation to calculate the frequency of Ventilation and Excess Cancer Risk (ECR), that obtained from the value of benzene Carcinogen Intake (Ink), benzene concentration in work environment (C), worker’s weight (Wb), inhalation rate (R), length of work/day (tE), working frequency/year (fE), duration of work (Dt), and average time period (tavg). Analysis relationship between Ventilation with Excess Cancer Risk (ECR) of benzene carcinogen was using Coefficient-Contingency Test and Prevalence Risk (PR). From observation it was found that most of the workplace were not ventilated (9 places/90%). Concentrations of benzene 0.04 mg/m3-2.91 mg/m3, inhalation rate (R) 0.5 m3/hr-0.7 m3/hr, length of work per day (tE) 8 hours/day-15 hours/day, working frequency (fE) 312-365 days/year, duration of work (Dt) 14 - 43 years, weight of worker’s (Wb) in 8 people (80%) ≤ 70 Kg, CSF benzene 0.055 mg/m3, and excess cancer risk (ECR) > 10-4 indicated that there was a possibility of carcinogenic health risks. P-value was 0.035, meaning there was a relationship between the existence of ventilation with the Excess Cancer Risk (ECR) of benzene carcinogen in workers. Prevalence Risk (PR) was 9.0, meaning that the absence of ventilation has a 9 times greater risk of carcinogen health effects. Recommendations were by providing better ventilation in the workplace, consuming CYP2E1 enzyme contained in cow liver and salmon to lower benzene concentration in the body, it is necessary for risk management to include medical tests, added air vents, replaced with safer materials, and communicated to use personal protective equipmen