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Containment Atmosphere Hydrogen Monitoring System – WS85: Reliable and Accurate In-situ Measurement

Hydrogen generation and the risk of H2 combustion during a severe accident pose a complex safety issue in relation to accident management. The mitigation of H2 hazards in such events may depend directly on the knowledge of the H2 concentration inside the containment.

The Hydrogen Monitoring System (WS85) measures the local H2 concentrations at different locations in the containment during normal operation as well as after an accident. Thus it is possible to continuously and simultaneously monitor the area and time distribution of H2 concentrations after an accident. The WS85 system can be installed in all types of reactors: The areas to be monitored and the position of the sensors are assessed individually for each different nuclear power plant (NPP) layout.

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