Apparatus and method for repairing a damaged portion in a tubular member made of refractory material

An apparatus for repairing a damaged portion of a tubular member made of refractory material, comprising:

• a shaft adapted for introduction in a tubular member made of refractory material;
• an expander provided adjacent a leading end of the shaft;
• a repairing material container supported by the expander and adapted for loading monolithic refractory material therein;
• a seat plate supported by the expander and adapted for pushing the repairing material container from behind via expansion of the expander during a repairing operation;
• and
• a driving motor for remotely expanding and contracting the expander,
• wherein the repairing material container includes a repairing material pressing surface and an extrusion preventing plate, both being fixed on the expander;
• and the extrusion preventing plate is provided so as to be capable of sliding the repairing material pressing surface toward the damaged portion by the expander.