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4. Sodium quality control in a nuclear reactor
4.1 Pollution sources
There are several types of pollution sources in a nuclear reactor (see box), the most characteristic of which are :
desorption of oxygen and hydrogen from new metal surfaces introduced into the reactor (new component, new fuel assembly);
decomposition of metal oxides on the surface by reducing sodium ;
hydrogen diffusion from steam generators to secondary sodium, due to corrosion of water-side tubes and thermal decomposition of hydrazine added in excess to the water to limit corrosion;
production of tritium and hydrogen in the core by ternary fission of the fuel ( 239 ...
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Sodium quality control in a nuclear reactor
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