Hazard sources in the occupational health and safety management system are defined as sources that may cause injuries and health damage (3. 18). Generally speaking, they are risks caused by mechanical, physiological or psychological factors in the operation, process and activities of the organization in the boundary and scope of the occupational health and safety management system under normal, abnormal or emergency situations that have occurred or may occur in the past, present or future.
Environmental factors in an environmental management system are defined as elements that interact or may interact with the environment in an organization's activities, products and services. In the operation of the system, normal, abnormal and emergency events related to past, present and future places and activities are mainly considered, which are reflected in land, air and water pollution, solid waste treatment and resource consumption.