Underground Conduit

Types of Conduit Identify the basic types of conduit used in underground transmission and distribution (T&D) systems. Describe the use of direct-buried polyvinyl chloride (PVC) and fiberglass conduit in underground residential distribution (URD) systems. Describe the basic techniques of conduit assembly. URD Conduit Installation Describe or demonstrate how to direct-bury PVC conduit in a trench in a URD system. Underground Systems Conduit Identify factors that must be considered when conduit is used in an underground system. Describe the built-up method of conduit installation in a concrete envelope. Describe the tier-by-tier method of conduit installation in a concrete envelope. Underground Systems Conduit Installation Demonstrate the installation of conduit using the built-up method. Demonstrate the installation of conduit using the tier-by-tier method. Identify the characteristics of oil-filled steel conduit. Corrosion Temperature Testing and Repair Describe how oil-filled metal conduit can be tested for corrosion. Explain how to identify and repair a damaged section of oil-filled metal conduit.