Corrosion failures in underground piping typically come in the form of uniform corrosion, pitting, galvanic corrosion, stress corrosion, and crevice corrosion.

The rate and severity of this corrosion depend on several factors, including fluid properties, pipe materials, and the surrounding environment. (Read Corrosion Assessment: 8 Corrosion Tests That Help Engineers Mitigate Corrosion.)

This corrosion can create deteriorating conditions which can result in numerous issues in water and wastewater piping. Damaged sewer pipes, in particular, can lead to unsanitary conditions as well as increased inflow and infiltration. (Read How to Detect and Control Hydrogen Sulfide Corrosion Problems in Sewer Pipes.)

Effective and regular inspection of underground pipelines is, therefore, essential in assessing existing corrosion protection measures and analyzing the effectiveness of rehabilitation methods.

In this quiz, we will test your knowledge on the various types of trenchless detection, rehabilitation, and protection methods typically used in pipes inflicted with corrosion.