Before welding repairs are performed to repair a crack, what is the correct procedure for performing an emergency crack stopper?

Correct Answer: Option B — A 3/8-inch hole should be drilled at each end of the crack, making sure that none of the crack extends beyond the two holes.

Drilling a 3/8-inch hole at each end of a crack effectively redistributes stress concentrations away from the crack tips, preventing further propagation. By ensuring the crack does not extend beyond these holes, the stress intensity factor is reduced, providing a stable, temporary arrestment until permanent structural repairs can be performed.