The Study of Implement of HCS Program at Hazardous Chemicals Knowledge and Safety performance in Tehran refinery, s laboratory unit

Background and aims The HCS standard includes listing of chemicals, labeling of chemical containers, preparation of material safety data sheets, writing plan and employee training programs. The aim of this study was to determine the influence of implemented program to enhance the knowledge and safety performance level of employees. Methods The knowledge level and unsafe act ratio were measured using both questionnaire and behavior checklist (with safety sampling method) before and after enforcing this interface. Results In this study, the mean and standard deviation of the knowledge level of employees related to chemical safety before enforcing the interface was 46% and 14%. However, after enforcing the interface, mean and standard deviation was 88% and 12%. The paired-t-test result in this parameter was significant (p-value