The Non-destructive Detecting of Inner Cavity Defect of Concrete Under Steel Plate Lining of the Runner Chamber of Hydro-power Plant by Using Neutron Method

A full-scale testing is performed by using neutron method for detecting inner cavity defect of periphery concrete under steel plate lining of the runner chamber of hydro-power generator in hydro-power plant. The test results are in accord with the actual situation. It reaches the engineering requirements and provides the guidance for grouting disposal.