A substantial proportion of all domestic aviation accidents and fatalities that occur each year involve GA, which includes all aviation except commercial and military. Under federal law, the Secretary of Transportation is responsible for ensuring that commercial air carriers carry liability insurance.
In continuous distillation, the source materials, vapors, and distillate are kept at a constant composition by carefully replenishing the source material and removing fractions from both vapor and liquid in the system. This results in a better control of the separation process.
Process in which the components of a substance or liquid mixture are separated by heating it to a certain temperature and condensing the resulting vapors. Some substances (such as crude oil) have components that vaporize at different temperatures and thus can be separated by condensing their vapors in turn. Distillation is also used as a purification process in which non-volatile components are separated from volatile ones.