NV A-19 Pipelines And Conduits Practice Questions - Nevada A-19 Pipeline And Conduits Contractor Examination Exam

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Underground metallic piping that handles flammable or combustible liquids must be protected from external corrosion by which of the following methods?

Coating or wrapping the pipe and providing cathodic protection or using a listed corrosion-resistant material Leaving bare steel in native soil so a patina can form Painting the pipe with ordinary latex house paint after backfill Relying only on the liquid inside the pipe to prevent exterior rust

Correct Answer:

Coating or wrapping the pipe and providing cathodic protection or using a listed corrosion-resistant material

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