How long is the first-level education time in the third-level safety education of property?

72 hours. According to the Provisions of the State Administration of Work Safety on Pre-job Safety Education, the training time of each level in the three-level safety education shall not be less than 24 hours. In other words, the total training time of pre-job safety education at all levels shall not be less than 72 hours except for high-risk industries such as coal mines, non-coal mines, dangerous chemicals and fireworks, and all other industries shall not be less than 24 hours.