AU - Khosravi, Y. AU - Farshad, A.A. AU - Arghami, SH. AU - Taghdisi, MH. AU - Gaohari, MR. AU - Hassanzadeh-Rangi, N. TI - The Study of Implement of HCS Program at Hazardous Chemicals Knowledge and Safety performance in Tehran refinery, s laboratory unit PT - JOURNAL ARTICLE TA - IOH JN - IOH VO - 5 VI - 3 IP - 3 4099 - http://ioh.iums.ac.ir/article-1-145-en.html 4100 - http://ioh.iums.ac.ir/article-1-145-en.pdf SO - IOH 3 AB  -   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 CP - IRAN IN - LG - eng PB - IOH PG - 20 PT - Research YR - 2008