書誌事項
- タイトル別名
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- Development of Water Level Gage Drift Recovery System by using Back Fill System during Severe Accident
抄録
In Fukushima accident on 2011, molten core supposed to be leaked on the concreate floor in containment vessel. After the loss of both the emergency core cooling system and IC core cooling, primary containment vessel (PCV) pressure increased. Water level measurement drifted because of water evaporation in the reference leg. Radiation level increased at a turbine building (T/B). There was a hydrogen explosion the after suppression chamber (S/C) wet venting. Modular Accident Analysis Program (MAAP) code analysis results and actual data suggest that depressurization of the reactor pressure vessel (RPV) began before its bottom failed. The data shows that the measured water level measurement drifted by more than 4 m owing to water loss in the reference leg. This is likely to have been caused by the high-temperature superheated core. Water should have been supplied to the water level reference leg through instrumentation piping. The system is named the back fill system. The system test was conducted and succeeded the recovery of water level gage.
収録刊行物
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- 動力・エネルギー技術の最前線講演論文集 : シンポジウム
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動力・エネルギー技術の最前線講演論文集 : シンポジウム 2018.23 (0), A133-, 2018
一般社団法人 日本機械学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001288101869312
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- NII論文ID
- 130007550720
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- ISSN
- 24242950
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可