Evaluation Method for Pipe Wall Thinning Due to Liquid Droplet Impingement - (I) Overview
NURETH-14 - 2011 September 25-30


Presented at:
NURETH-14
2011 September 25-30
Location:
Toronto, Canada
Session Title:
O1-2 Thermalhydraulics and Structural Integrity in Connection to Aging and Life Extension

Authors:
Masanori Naitoh (Nuclear Power Engineering Center, Safety Analysis Group, The Institute of Applied Energy)
Shunsuke Uchida (Nuclear Power Engineering Center, Safety Analysis Group, The Institute of Applied Energy)
Hidetoshi Okada (Nuclear Power Engineering Center, Safety Analysis Group, The Institute of Applied Energy)
Hiroaki Yugo (Nuclear Power Engineering Center, Safety Analysis Group, The Institute of Applied Energy)
Seiichi Koshizuka (The University of Tokyo)
  

Abstract

The analysis code system, DRAWTHREE-LDI has been developed in order to evaluate pipe wall thinning due to liquid droplet impingement (LDI). The wall thinning due to LDI is classified into two types which are LDI (corrosion) and LDI (erosion). In LDI (corrosion), the dominant mechanism to dwindle pipe wall thickness is flow-accelerated corrosion which is a chemical process. While in LDI (erosion), it is impact onto wall surfaces due to droplet impingement which is a physical process. The comparison between results calculated by DRAWTHREE-LDI and those measured at an actual power plant shows good agreements within a factor of two.

Individual Conference-Paper Copies (Electronic Where Available):

  • For CNS members, the first 5 copies per calendar year are free, and additional copies are $10 each.
  • For non-members, the price is $25 for the first Conference-paper copy in a request, and $10 each for additional copies of papers in the same conference and in the same request.
  • Contact the CNS office to order reprints.