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Jim Melling and our Japanese Agent, Mr Watanabe, recently carried out the install of a Proteus/HPR-20 at JAEA, Japan. The customer is concerned with nuclear safety. His experimental programme address hydrogen behaviour in the reactor containment during a postulated severe accident.

Hydrogen is of concern because, at some concentrations, deflagration can occur, resulting in damage to the containment and the release of radioactive material into the environment. It is thus crucial to know how the hydrogen mixes with air and steam, and if this mixing would lead to a uniform distribution of the hydrogen or if it would accumulate in specific regions.

This information is used in the design of nuclear water containment for Boiling Water Reactors (BWR) and Pressurized Water Reactors (PWR).


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