What common tool is used to inspect refractory?

The use of a hammer as a common tool for inspecting refractory is well-founded in the context of identifying issues such as deterioration and integrity. This tool allows inspectors to conduct a "tap test," where they strike the surface of the refractory material. The sound and feel produced during this process can reveal important information about the condition of the refractory. A solid, intact refractory will produce a clear, ringing sound, while a loose or deteriorated section may produce a dull or muted sound, indicating potential issues.

This tactile and auditory assessment helps determine areas that may require further investigation, repair, or replacement, which is critical for maintaining the safety and functionality of high-temperature industrial processes. The hammer's simplicity and effectiveness in performing this type of inspection make it a standard tool in the evaluation of refractory materials.