Question 21Steam Plants - 1st Asst/Chief
70% to passBoiler refractory firebrick is secured to the casing by _______________.
Aslots in the brick engaging anchor bolts
Bfast drying plastic refractory mortar
Chigh strength tensile fasteners
Dstudding on the waterwall tubes
AI Explanation
The correct answer is A) slots in the brick engaging anchor bolts. Boiler refractory firebrick is typically secured to the casing by having slots or recesses in the bricks that engage with anchor bolts mounted on the casing. This allows the bricks to be firmly held in place while also allowing for thermal expansion and contraction of the bricks. The other options are not the standard method for securing boiler refractory. Plastic mortar would not provide a durable enough bond, high strength tensile fasteners are not commonly used, and studding on the waterwall tubes is not the primary means of securing the firebrick to the casing.
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