Question 141Steam Plants - 1st Asst/Chief
70% to passWhich of the listed refractory materials should be used for patching a burner front formed of plastic, castable, or tile?
AAir-setting mortar
BPlastic fireclay
CChrome castable insulation
DPlastic chrome insulation
AI Explanation
The correct answer is B) Plastic fireclay. Plastic fireclay is the appropriate refractory material for patching a burner front formed of plastic, castable, or tile. Plastic fireclay is a type of refractory material that can withstand high temperatures and is compatible with the materials typically used in burner fronts. The other options, such as air-setting mortar, chrome castable insulation, and plastic chrome insulation, may not be suitable for this specific application.
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