Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °C
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 develo...
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MDPI AG
2020-08-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/10/9/729 |
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| author | Soon-Hyeok Jeon Hee-Sang Shim Ji-Min Lee Jeoh Han Do Haeng Hur |
| author_facet | Soon-Hyeok Jeon Hee-Sang Shim Ji-Min Lee Jeoh Han Do Haeng Hur |
| author_sort | Soon-Hyeok Jeon |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T17:06:09Z |
| format | Article |
| id | doaj.art-b5ce71454c874966a4a418ad15ed45e3 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T17:06:09Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
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| series | Crystals |
| spelling | doaj.art-b5ce71454c874966a4a418ad15ed45e32023-11-20T10:49:53ZengMDPI AGCrystals2073-43522020-08-0110972910.3390/cryst10090729Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °CSoon-Hyeok Jeon0Hee-Sang Shim1Ji-Min Lee2Jeoh Han3Do Haeng Hur4Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 34057, KoreaKorea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 34057, KoreaKorea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 34057, KoreaKorea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 34057, KoreaKorea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 34057, KoreaIn 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.https://www.mdpi.com/2073-4352/10/9/729magnetitesteam generatorsludgeloop systemsimulationnuclear power plant |
| spellingShingle | Soon-Hyeok Jeon Hee-Sang Shim Ji-Min Lee Jeoh Han Do Haeng Hur Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °C Crystals magnetite steam generator sludge loop system simulation nuclear power plant |
| title | Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °C |
| title_full | Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °C |
| title_fullStr | Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °C |
| title_full_unstemmed | Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °C |
| title_short | Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °C |
| title_sort | simulation of porous magnetite deposits on steam generator tubes in circulating water at 270 °c |
| topic | magnetite steam generator sludge loop system simulation nuclear power plant |
| url | https://www.mdpi.com/2073-4352/10/9/729 |
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