Physical (Noise, heat, radiation, vibration etc) encountered in working environment - Biological (Microbes, bacteria, viruses, ricketsia, sproketets etc.), the health risks created by these factors precautions to be taken to protect

Occupational health and safety system (OHSAS 18001), Preliminary assessment in workplace, Risk assessment and risk assessment, Risk management, Risk management, Occupational health and safety system, Occupational health and safety system process, work process and task evaluation, identification of sources of danger, risk estimation and evaluation methods, selection and application of protective measures, risk assessment applications.