Next Article in Journal
Polyethylenimine-Ethoxylated Interfacial Layer for Efficient Electron Collection in SnO2-Based Inverted Organic Solar Cells
Previous Article in Journal
In Situ Electric-Field Study of Surface Effects in Domain Engineered Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 Relaxor Crystals by Grazing Incidence Diffraction
Open AccessArticle

Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °C

Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea
*
Author to whom correspondence should be addressed.
Crystals 2020, 10(9), 729; https://doi.org/10.3390/cryst10090729
Received: 6 July 2020 / Revised: 12 August 2020 / Accepted: 12 August 2020 / Published: 20 August 2020
(This article belongs to the Special Issue Stress Corrosion in Magnetite)
In the secondary side of pressurized water reactors (PWRs), the main corrosion product accumulated on the steam generator (SG) tubes is magnetite, which has a porous structure. The purpose of this work is to simulate the porous magnetite deposited to the SG tubes using a loop system. We newly developed a circulating loop system for a porous magnetite deposition test. A test section was designed as a single hydraulic flow channel, and a cartridge heater was fabricated and mounted into a commercial SG tube to provide an equal heating source for the primary water. After the deposition test, the simulated magnetite deposits were characterized for comparison to real SG tube deposits collected from an operating PWR plant. The magnetite deposits produced using the loop system were appropriate for simulating the real SG tube deposits because the particle characteristics, phase, and porous morphology are closely similar to those of real deposit samples. Using the loop system, the chemical impurities such as Na and Cl can be easily concentrated within the pores of the simulated magnetite deposits. These simulated magnetite samples are expected to be widely utilized in various research fields such as the heat transfer degradation and magnetite accelerated corrosion of SG tubes. View Full-Text
Keywords: magnetite; steam generator; sludge; loop system; simulation; nuclear power plant magnetite; steam generator; sludge; loop system; simulation; nuclear power plant
Show Figures

Figure 1

MDPI and ACS Style

Jeon, S.-H.; Shim, H.-S.; Lee, J.-M.; Han, J.; Hur, D.H. Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °C. Crystals 2020, 10, 729.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop