precautions taken to improve safety, i.e. reduce risk related to human health. Common safety measures include: Chemical analysis Destructive testing of samples Drug testing of employees, etc. Examination of activities by specialists to minimize physical stress or increase productivity Geological surveys to determine whether land or water sources are polluted, how firm the ground is at a potential building site, etc. Government regulation so suppliers know what standards their product is expected to meet. Industry regulation so suppliers know what level of quality is expected. Industry regulation is often imposed to avoid potential government regulation. Instruction manuals explaining how to use a product or perform an activity Instructional videos demonstrating proper use of products Root cause analysis to identify causes of a system failure and correct deficiencies. Internet safety or Online Safety, is protection of the user's safety from cyber threats or computer crime in general. Periodic evaluations of employees, departments, etc. Physical examinations to determine whether a person has a physical condition that would create a problem. Process safety management is an analytical tool focused on preventing releases of highly hazardous chemicals. Safety margins/Safety factors. For instance, a product rated to never be required to handle more than 200 pounds might be designed to fail under at least 400 pounds, a safety factor of two. Higher numbers are used in more sensitive applications such as medical or transit safety. Self-imposed regulation of various types. Implementation of standard protocols and procedures so that activities are conducted in a known way. Statements of ethics by industry organizations or an individual company so its employees know what is expected of them. Stress testing subjects a person or product to stresses in excess of those the person or product is designed to handle, to determining the "breaking point". Training of employees, vendors, product users Visual examination for dangerous situations such as emergency exits blocked because they are being used as storage areas. Visual examination for flaws such as cracks, peeling, loose connections. X-ray analysis to see inside a sealed object such as a weld, a cement wall or an airplane outer skin. Standards organizations A number of standards organizations exist that promulgate safety standards. These may be voluntary organizations or government agencies. These agencies first define the safety standards, which they publish in the form of codes. They are also Accreditation Bodies and entitle independent third parties such as testing and certification agencies