Pipeline Wall Thinning Behavior of A335P11 Steel under the Condition of Flow Accelerated Corrosion

The conditions of the second loop of the conventional island in nuclear power plant were simulated, and the corrosion thinning behavior of A335P11 pipeline in elbow test section, variable diameter test section and three-way test section under this working condition was studied. The results showed that the most serious site of FAC occured at the inner arc surface of the elbow, the outlet of tapered pipe section of the adjustable pipe, and the auxiliary outlet of the three-way test section.