Can graduates majoring in safety engineering work in relevant units of CNNC? For example, it is related to Zhengzhou Nuclear Fifth Hospital.

This depends on the recruiting unit. Some of my school's radiation protection and nuclear technology majors are operators (this is generally the direction of stacking). If the requirements of the company you apply for are relatively rigid, your qualifications will be strictly required, but I also have a friend who works in Nan 'an and joined the Nuclear Safety Department of taohuajiang. Hehe, I will strive for more from the unit. Wish you success!