Bottom nozzle failure mechanism of water reactor pressure vessel under severe accident conditions

Oh, Young Kyun; Lim, Joon Seo; Jeong, Ki Jun; Hwang, Il Soon

doi:10.1016/j.nucengdes.2006.04.003

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…There have been a few studies on blogging behaviors of submerged entry nozzles, through which liquid steel flows in a process of the continuous casting process . Several studies on the failure mechanism of nozzles used in petrochemical plants, gas combustion turbines, nuclear power plants, and so on have been reported . Nevertheless, studies on degradation of the cooling nozzles in the hot strip mill process have not been found by our literature survey.…”

Section: Introductionmentioning

confidence: 99%

Formation of a scale on the hole surface of cooling nozzles in the hot strip mill process, obstructing a laminar flow of coolant

Huh

Park

Jung

et al. 2012

Surface & Interface Analysis

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We investigated on the formation of a scale on the hole surface of brass cooling nozzles in the hot strip mill process of steel manufacturing. High roughness of a nozzle hole surface due to the scale formation obstructs a laminar flow of coolant, which can result in the diminution of cooling efficiency of strips. Morphology and elemental composition of a scale formed on the hole surface of cooling nozzles used in the hot strip mill process for a long time were characterized with an electron microscope equipped with an energy dispersive X‐ray spectroscope. The scale is mainly composed of a foreign substance layer and an oxide layer. In addition, three kinds of cooling water were analyzed to investigate an inflow source for elemental constituents of the foreign substance layer. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%