Question

Which of the following type of equipment is/are highly prone to erosion-corrosion?

(a) In piping arrangements at elbows and bends

(b) Measuring devices such as orifice and turbine blades

(c) In piping arrangements at straight lines

(d) In piping arrangements at elbows and bends and measuring devices such as orifice and turbine blades

This question was addressed to me in semester exam.

My doubt is from Eight Forms in chapter Eight Forms of Corrosion of Corrosion Engineering

Answer 1

Correct answer is (d) In piping arrangements at elbows and bends and measuring devices such as orifice and turbine blades

The explanation is: Erosion corrosion can be affected by the relative velocity of the corrosive solution and metal surface and along with impingement velocity at the edges and turnings. In piping arrangements at elbows and bends and measuring devices such as orifice and turbine blades are the equipment that is prone to erosion-corrosion.