Water Distribution Operator Class IV Practice Questions - ABC WPI Water Distribution Operator Class IV Certification Exam

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A 'smart-ball' or PipeDiver-style free-swimming inspection tool is most commonly used on large transmission mains to detect which conditions?

Coating defects on the exterior of cathodically protected steel Leaks and trapped gas pockets along the pipeline Lead service line connections at meters Chlorine residual decay rates in distribution

Correct Answer:

Leaks and trapped gas pockets along the pipeline

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