What is the purpose of a Mandrel Inspection?

A Mandrel Inspection is specifically used to ensure that a pipe maintains its intended shape and has not experienced any deformation, such as bending, under pressure. This method involves inserting a mandrel, which is a device shaped to fit inside the pipe, to verify that the internal diameter of the pipe is consistent and that it has not collapsed or been distorted. Maintaining the structural integrity of the pipe is crucial for proper flow and pressure management in collection systems.

This inspection is particularly important for HDPE (High-Density Polyethylene) pipes and similar materials, which can be susceptible to bending or deformation, particularly after installation or during service conditions. Confirming the shape and size of the pipe can prevent future challenges such as blockages or structural failures that could arise from improperly formed pipes.

In contrast, the other choices address different aspects of pipe functionality such as flow measurement, leak detection, and diameter confirmation, which are important but do not directly relate to the specific purpose of a Mandrel Inspection.