Accident and Incident analysis is carried out in order to determine the cause or causes of an accident (that can result in single or multiple outcomes) so as to prevent further accidents of a similar kind. It is part of accident investigation or incident investigation. These analyses may be performed by a range of experts, including health and safety advisers. Health and safety and patient safety professionals prefer using the term "incident" in place of the term "accident". Its retrospective nature means that accident analysis is primarily an exercise of directed explanation; conducted using the theories or methods the analyst has to hand, which directs the way in which the events, aspects, or features of accident phenomena are highlighted and explained. Identify and locate the main source of accidents from actual experience, materials, machines, tools, jobs, men and methods most likely to produce injuries. Disclose the nature and size of the accident problem in departments and among occupations. Indicate the need for engineering revision by identifying the unsafe conditions, materials, equipment and environment. Disclose inefficient operating procedures, processes, poor layout and outdated methods to reduce accidents. Disclose the unsafe practices for training of employees Disclose improper placement of personnel instances of handicaps contributing to accidents Guide supervisors to use their maximum time for safety work by providing them information about the hazards in their departments.