Loosely, the term ergonomics is applied to all interactions between human and environment. For many years, the 2 terms were used interchangably. However, over the last several years the term Ergonomics has come to refer to design with respect to physical human characteristics, while Human Factors refers to consideration of human cognitive characteristics in design. Administrative controls are changes that are made by management. These changes could include training, job rotation, and incentives.
Engineering controls are changes made to equipment.
These changes could include guard improvement, sound dampening, or automation. The technician operated the computer that controlled the X-ray machine. The machine needed to have the information input manually as to what type of beam to generate a lower grade e beam or a higher grade x beam. The task is one that should have more checks and balances in it. The operator was trained in her job functions and was able to follow instructions.