Knuckle-jointed lance segments with an exterior protective system

摘要

A knuckle jointed lance (KJL) segment with an exterior protective system (EPS), comprising an elongated hollow body and at least one protective rod. The body has a generally trapezoidal profile, when viewed in elevation, and is open at both ends. At least one elongate recess is provided in the exterior surface of the body. Each recess follows a predetermined pathway within the exterior surface. At least one consumable protective rod is received into each elongate recess.