Evaluation method for corrosion sensitivity screening of system equipment of nuclear power plant

The invention relates to the technical field of nuclear power plant mechanical equipment, and particularly discloses an evaluation method for corrosion sensitivity screening of nuclear power plant system equipment. The method comprises the following steps of: 1, judging the classification of an environment where system equipment is located; 2, judging the corrosion resistance grade of the system equipment; 3, environment classification and corrosion resistance grades are combined, and the corrosion risk of system equipment is obtained; 4, bringing system equipment with medium corrosion risk and high corrosion risk into a preventive corrosion prevention outline; and 5, periodically carrying out corrosion inspection on the system equipment, and adjusting the system equipment which is included in the preventive anti-corrosion outline and the system equipment which is not included in the preventive anti-corrosion outline according to a result. By applying the method, the corrosion risk of the nuclear power plant