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http://dx.doi.org/10.3795/KSME-B.2011.35.10.1097

Study on Design Change of a Pipe Affected by Liquid Droplet Impingement Erosion  

Hwang, Kyeong-Mo (KEPCO Engineering & Construction Co., INC.)
Lee, Chan-Gyu (KEPCO Engineering & Construction Co., INC.)
Bhang, Keug-Jin (Korea Hydro & Nuclear Power Co., LTD.)
Yim, Young-Sig (Korea Hydro & Nuclear Power Co., LTD.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.10, 2011 , pp. 1097-1103 More about this Journal
Abstract
Liquid droplet impingement erosion (LDIE) is caused by the impact of high-velocity droplets entrained in steam or air on metal. The degradation caused by the LDIE has been experienced in steam turbine internals and high-velocity airplane components (particularly canopies). Recently, LDIE has also been observed in the pipelines of nuclear plants. LDIE among the pipelines occurs when two-phase steam experiences a high pressure drop (e.g., across an orifice in a line to the condenser). In 2011, a nuclear power plant in Korea experienced a steam leak caused by LDIE in a pipe through which a two-phase fluid was flowing. This paper describes a study on the design change of a pipe affected by LDIE in order to mitigate the damage. The design change has been reviewed in terms of fluid dynamics by using the FLUENT code.
Keywords
Liquid Droplet Impingement Erosion; Wall Thinning; Design Change; End Cap; Flow Accelerated Corrosion;
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