The gas cylinder inspector certificate belongs to the special operation certificate. According to the Management Regulations on Safety Technology Training and Assessment of Special Operations Personnel, the operation certificate of special operations is reviewed every three years 1 time. If it is not reviewed within the prescribed time limit, the special operation certificate will be invalid and needs to be re-verified.

If the certificate of cylinder inspector needs to be reviewed, the applicant or the unit where the applicant belongs shall apply to the original examination and certification authority or the examination and certification authority where he works within 60 days before the expiration of the validity period.