The application of primary zinc injection technology makes the oxide film generated on the surface of the primary equipment more stable and plays a role in reducing the collective dose of the unit.By analyzing the effect of zinc injection on the unit,and combining the target concentration of zinc injection in a domestic PWR unit and the conditions of the on-site equipment,a set of zinc injection and dosing equipment is designed,and its design scheme,equipment component parameters and working flow are defined.The equipment is composed of a solution mixing unit,a filtration unit,a dosing unit and a control unit,which can be used to add zinc acetate during operation and hydrogen peroxide during overhaul.
Pressurized water reactorPrimary zinc injectionDosing equipment
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