Dive into the 2026 NY Wastewater Exam – Flush Away the Competition with Confidence!

Brinelling in a failed pump refers specifically to the damage characterized by dents that form in the bearing race or bearing. This phenomenon occurs when the bearings experience heavy static loads or when there is frequent vibration, leading to localized deformation.

When the load exceeds the material's resistance, small indentations or dints are produced on the surfaces where contact occurs. This type of damage does not necessarily stem from operational wear over time but rather from the immediate impact of pressure, often heightened by factors such as misalignment or improper installation.

This option effectively captures the core issue of brinelling, whereas the other choices describe different types of damage. Excessive wear of the outer casing pertains to general degradation, complete fractures denote a total failure that usually results from different sources of stress, and corrosion signifies a chemical process rather than mechanical impact. Thus, the focus on dents in the bearing specifics aligns accurately with the definition and mechanics of brinelling.