Water Chemistry in Boiling Water Reactors – A Leibstadt-Specific Overview
The boiling water reactor (BWR) consists of two main water circuits: the water-steam cycle and the main cooling water system. In the introduction, the goals and tasks of the BWR plant chemistry are described. The most important objectives are the prevention of system degradation by corrosi...
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| Format: | Article |
| Language: | deu |
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Swiss Chemical Society
2005-12-01
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| Series: | CHIMIA |
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| Online Access: | https://chimia.ch/chimia/article/view/4093 |
| _version_ | 1811213446913458176 |
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| author | Flurin-A. Sarott |
| author_facet | Flurin-A. Sarott |
| author_sort | Flurin-A. Sarott |
| collection | DOAJ |
| description |
The boiling water reactor (BWR) consists of two main water circuits: the water-steam cycle and the main cooling water system. In the introduction, the goals and tasks of the BWR plant chemistry are described. The most important objectives are the prevention of system degradation by
corrosion and the minimisation of radiation fields. Then a short description of the BWR operation principle, including the water steam cycle, the transport of various impurities by the steam, removing impurities from the condensate, the reactor water clean-up system, the balance of plant and
the main cooling water system, is given. Subsequently, the focus is set on the water-steam cycle chemistry. In order to fulfil the somewhat contradictory requirements, the chemical parameters must be well balanced. This is achieved by the water chemistry control method called 'normal water
chemistry'. Other additional methods are used for the solution to different problems. The 'zinc addition method' is applied to reduce high radiation levels around the recirculation loops. The 'hydrogen water chemistry method' and the 'noble metal chemical addition method' are used to protect
the reactor core components and piping made of stainless steel against stress corrosion cracking. This phenomenon has been observed for about 40 years and is partly due to the strong oxidising conditions in the BWR water. Both mitigation methods are used by the majority of the BWR plants all
over the world (including the two Swiss NPPs Mühleberg and Leibstadt).
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| first_indexed | 2024-04-12T05:45:49Z |
| format | Article |
| id | doaj.art-e8f7c0c8b555444595db7b824b79a49a |
| institution | Directory Open Access Journal |
| issn | 0009-4293 2673-2424 |
| language | deu |
| last_indexed | 2024-04-12T05:45:49Z |
| publishDate | 2005-12-01 |
| publisher | Swiss Chemical Society |
| record_format | Article |
| series | CHIMIA |
| spelling | doaj.art-e8f7c0c8b555444595db7b824b79a49a2022-12-22T03:45:27ZdeuSwiss Chemical SocietyCHIMIA0009-42932673-24242005-12-01591210.2533/000942905777675336Water Chemistry in Boiling Water Reactors – A Leibstadt-Specific OverviewFlurin-A. Sarott The boiling water reactor (BWR) consists of two main water circuits: the water-steam cycle and the main cooling water system. In the introduction, the goals and tasks of the BWR plant chemistry are described. The most important objectives are the prevention of system degradation by corrosion and the minimisation of radiation fields. Then a short description of the BWR operation principle, including the water steam cycle, the transport of various impurities by the steam, removing impurities from the condensate, the reactor water clean-up system, the balance of plant and the main cooling water system, is given. Subsequently, the focus is set on the water-steam cycle chemistry. In order to fulfil the somewhat contradictory requirements, the chemical parameters must be well balanced. This is achieved by the water chemistry control method called 'normal water chemistry'. Other additional methods are used for the solution to different problems. The 'zinc addition method' is applied to reduce high radiation levels around the recirculation loops. The 'hydrogen water chemistry method' and the 'noble metal chemical addition method' are used to protect the reactor core components and piping made of stainless steel against stress corrosion cracking. This phenomenon has been observed for about 40 years and is partly due to the strong oxidising conditions in the BWR water. Both mitigation methods are used by the majority of the BWR plants all over the world (including the two Swiss NPPs Mühleberg and Leibstadt). https://chimia.ch/chimia/article/view/4093Boiling water reactorBwrNoble metal chemical additionNmcaWater chemistryZinc addition |
| spellingShingle | Flurin-A. Sarott Water Chemistry in Boiling Water Reactors – A Leibstadt-Specific Overview CHIMIA Boiling water reactor Bwr Noble metal chemical addition Nmca Water chemistry Zinc addition |
| title | Water Chemistry in Boiling Water Reactors – A Leibstadt-Specific Overview |
| title_full | Water Chemistry in Boiling Water Reactors – A Leibstadt-Specific Overview |
| title_fullStr | Water Chemistry in Boiling Water Reactors – A Leibstadt-Specific Overview |
| title_full_unstemmed | Water Chemistry in Boiling Water Reactors – A Leibstadt-Specific Overview |
| title_short | Water Chemistry in Boiling Water Reactors – A Leibstadt-Specific Overview |
| title_sort | water chemistry in boiling water reactors a leibstadt specific overview |
| topic | Boiling water reactor Bwr Noble metal chemical addition Nmca Water chemistry Zinc addition |
| url | https://chimia.ch/chimia/article/view/4093 |
| work_keys_str_mv | AT flurinasarott waterchemistryinboilingwaterreactorsaleibstadtspecificoverview |