When the welder certificate expires, it shall be renewed at the local safety production supervision and administration bureau. The welder's special mount guard operation certificate was issued by the safety supervision bureau, and now it is called induction card, which is reviewed once every three years. According to their own welding skills, welders have obtained the technical titles of junior, intermediate, senior, technician and senior technician through the welding skill examination, and obtained the technical grade certificate issued by the state. Different titles can carry out different welding operations. For the welding of pressure vessels such as boilers, it is necessary to obtain a welding license for pressure vessels.

Special operations personnel shall participate in necessary safety training and pass the examination before applying for the reexamination or postponement of the reexamination of the operation certificate of special operations. Safety training time is not less than 8 hours, mainly training laws, regulations, standards, accident cases and related new processes, technologies and equipment. Where an application for reexamination is made, the issuing authority shall complete the reexamination within 20 working days from the date of receiving the application. Those who pass the second interview shall be signed, registered and confirmed by the examination issuing authority; Unqualified, explain the reasons. Apply for an extension of the review, after the review is qualified, the assessment and issuing authority will re-issue the special operation certificate.

Legal basis: Article 22 of Management Regulations on Safety Technical Training and Assessment of Special Operators.

Where the special operation certificate needs to be reviewed, the applicant or the applicant's employer shall apply to the original examination and certification authority or the examination and certification authority where the applicant works, and submit the following materials within 60 days before the expiration of the validity period:

(1) A health certificate issued by a community or medical institution at or above the county level;

(2) engaging in special operations;

(3) Records of passing the safety training examination.

If it is necessary to extend the renewal of the special operation certificate at the expiration of the validity period, it shall apply for an extension of review in accordance with the provisions of the preceding paragraph.