During a visual inspection, what might indicate the need for further examination of a pipe?

The identification of abnormal shapes or cracks on a pipe during a visual inspection is a critical indicator that warrants further examination. Such irregularities can suggest underlying issues that may compromise the integrity of the pipe, potentially leading to leaks or failures. Cracks can propagate under pressure, and abnormal shapes may indicate deformation due to stress, corrosion, or other environmental factors. Recognizing these signs is essential for ensuring the safe operation of the distribution system and preventing future damage.

Other options, while they may suggest characteristics of the pipe, do not inherently signal immediate concerns that require further investigation. A shiny surface may indicate a new or recently polished pipe but does not imply any structural issues. Color coding typically serves as a standard for identifying the contents of the pipe or its status but doesn't reflect the pipe's condition. Slight discoloration could indicate minor staining or environmental effects that may not immediately threaten the pipe's structural integrity, making it less of a concern compared to abnormal shapes or cracks.