Supporting force inspection device and supporting force inspection method

A supporting force inspection device for inspecting a supporting force of a vibration suppression member interposed between bend portions of a plurality of heat transfer tubes of a steam generator, the supporting force inspection device comprising:

• an acceleration sensor for detecting a vibration state of the bend portion;
• a sensor holding part disposed outside the heat transfer tube and configured to hold the acceleration sensor;
• a vibration force generation part configured to generate a vibration force for vibrating the heat transfer tube along a plane in which a curvature circle of the bend portion exists;
• and
• a vibration rod connecting the sensor holding part and the vibration force generation part,
• wherein the vibration force generation part is configured to apply the vibration force along an extension direction of the vibration rod to the vibration rod and vibrate the heat transfer tube along the plane in which the curvature circle exists via the vibration rod.

A method of inspecting a supporting force of a vibration suppression member interposed between bend portions of a plurality of heat transfer tubes of a steam generator, the method comprising:

• a placement step of placing, inside the heat transfer tube, a sensor holding part to hold an acceleration sensor for detecting a vibration state of the bend portion;
• a vibration step of vibrating the heat transfer tube along a plane in which a curvature circle of the bend portion exists, through cooperation of the sensor holding part and a vibration force generation part configured to generate a vibration force for vibrating the heat transfer tube along the plane in which the curvature circle exists;
• and
• an acceleration detection step of detecting the vibration state of the bend portion vibrated in the vibration step by using the acceleration sensor held by the sensor holding part.