耐環境性水素濃度計の開発
Development of In-containment Hydrogen Sensor System against Harsh Environment
著者:
長谷川 翔平 Shohei HASEGAWA 丸田 祐史 Yuji MARUTA 右近 浩幸 Hiroyuki UKON 大庭 雅人 Masato OBA
発刊日:
公開日:
Catalytic CombustibleHydrogen ConcentrationPrimary Containment VesselPWRSevere AccidentThermal Conductivity
概要
Mitsubishi Heavy Industries, LTD (MHI) developed accident tolerant in-containment hydrogen monitoring system that can operate under harsh environmental conditions during severe accident. The new hydrogen monitoring system consists of two types of detectors, which have different features and operating principles such as high sensitivity (for monitoring low hydrogen concentration) and wide range (for monitoring high hydrogen concentration of up to 20vol%), and hydrogen indication and transmitting modules (4-20mA DC).The operating conditions of newly developed hydrogen sensor are maximum operating temperature/pressure of up to 200 degree Celsius (oC) / 0.8MPa gage and total integrated dose (TID) of 0.5MGy gamma, which envelopes severe accident environmental conditions in a containment.
