Florida Wastewater Practice Test

What could cause excessive wear on bearings in a wastewater treatment plant?

1. Over lubrication

2. Misalignment

3. Low operational temperature

4. High humidity

The correct answer is: Misalignment

Excessive wear on bearings in a wastewater treatment plant is primarily caused by misalignment. When bearings are misaligned, it can lead to uneven load distribution, resulting in increased friction and stress at specific points on the bearing surfaces. This misalignment forces the bearing to work harder than intended, which can accelerate wear and increase the risk of failure. Proper alignment of bearings is crucial because it ensures that moving parts operate smoothly and efficiently. Misalignment can result from improper installation, wear over time, or external forces that may disrupt the alignment of the components. This situation not only shortens the lifespan of the bearings but can also lead to further complications, such as vibrations that affect the entire machinery and components adjacent to the bearings. Proper maintenance and regular checks are essential to keep bearings well-aligned and to minimize the risk of excessive wear. In contrast, while over lubrication, low operational temperatures, and high humidity can also affect bearing performance, they are less likely to be the primary causes of excessive wear compared to misalignment. Over lubrication can lead to grease starvation if the excess grease doesn't circulate properly, but it's typically a maintenance issue rather than a direct mechanical failure like misalignment. Low operational temperatures may lead to lubrication issues as well, but they do not