Correct option is C
In riveted joints, ensuring a leak-proof seal is crucial, especially in applications like boilers, pressure vessels, and shipbuilding. Caulking and fullering are processes used to improve the sealing of riveted joints.
· Caulking: A caulking tool is used to slightly deform the edges of rivet heads and plate joints, ensuring a tight seal.
· Fullering: A fuller tool is used before caulking to make the rivet edges flat and smooth, preventing leakage.
These processes help in preventing leakage of gases or fluids by eliminating gaps between riveted plates.
· Used in boilers, pressure vessels, tanks, and shipbuilding.
· Improves joint sealing and prevents fluid/gas leakage.
· Involves deforming metal edges to close gaps.
· Fullering is performed before caulking to improve efficiency.
