Fouling Analyses of Heat Exchangers for PSR

주기적안전성평가를 위한 원전 열교환기 Fouling 평가

  • 황경모 (한국전력기술(주) 재료기술연구그룹) ;
  • 진태은 (한국전력기술(주) 재료기술연구그룹) ;
  • 한상길 (한국수력원자력(주) 원자력환경기술원) ;
  • 김병섭 (한국수력원자력(주) 원자력환경기술원)
  • Published : 2003.04.23

Abstract

Fouling of heat exchangers is generated by water-borne deposits, commonly known as foulants including particulate matter from the air, migrated corrosion produces; silt, clays, and sand suspended in water; organic contaminants; and boron based deposits in plants. This fouling is known to interfere with normal flow characteristics and reduce thermal efficiencies of heat exchangers. This paper focuses on fouling analyses for six heat exchangers of two primary systems in two nuclear power plants; the regenerative heat exchangers of the chemical and volume control system and the component cooling water heat exchangers of the component cooling water system. To analyze the fouling for heat exchangers, fouling factor was introduced based on the ASME O&M codes and TEMA standards. Based on the results of the fouling analyses, the present thermal performances and fouling levels for the six heat exchangers were predicted.

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