What is a major consideration when dealing with back thrust in waterjet operations?

A major consideration when dealing with back thrust in waterjet operations is that it can cause fatigue in operators. When high-pressure water is used in these systems, the reaction forces generated—particularly the back thrust—can lead to physical strain on the individuals operating the equipment. This strain is exacerbated if operators are not properly trained or if they are dealing with prolonged exposure to these forces without adequate support or equipment that mitigates the effects. Addressing this concern is crucial to ensure operator comfort and safety, which directly impacts work efficiency and the overall effectiveness of the operation.

While the other options include considerations relevant to waterjet operations, they do not specifically address the significant impact of back thrust on operator fatigue and physical demand.