Ontario Operator-in-Training (OIT) Practice Exam

What process can reduce the risk of cavitation in a system?

1. Increasing flow speed

2. Using smaller pumps

3. Maintaining proper pressure levels

4. Reducing water pH

The correct answer is: Maintaining proper pressure levels

Maintaining proper pressure levels is vital in reducing the risk of cavitation in a system. Cavitation occurs when there is a drop in pressure that leads to the formation of vapor bubbles in the liquid, which can collapse violently and cause damage to pumps and other equipment. By ensuring that pressure levels are maintained within the recommended operational limits, the potential for pressure drops that could lead to cavitation is minimized. Proper pressure management prevents the conditions necessary for vapor bubble formation, ensuring smooth operation and longevity of system components. The other options may not effectively address the issue of cavitation. While increasing flow speed could enhance system performance in some contexts, it can inadvertently increase the likelihood of pressure drops in certain scenarios. Smaller pumps may not have the capacity to adequately maintain necessary pressure levels in larger systems, potentially exacerbating the issue. Reducing the water pH does not directly correlate with cavitation and may affect other aspects of water chemistry and system performance instead.