pass due meaning in English

过期

Special operators in charge of safe production in mining enterprises must receive special training ; they may take up a post of such duty only after they have obtained a certificate of operation qualification after passing due examination and verification
矿山企业安全生产的特种作业人员必须接受专门培训，经考核合格取得操作资格证书的，方可上岗作业。
Article 54 persons who are directly engaged in the collection , storage , transportation , utilization and treatment of hazardous waste shall receive professional training and shall be allowed to take up such jobs only after they pass due examinations
第五十四条直接从事收集、贮存、运输、利用、处置危险废物的人员，应当接受专业培训，经考核合格，方可从事该项工作。