What’s stopping you?
Nuclear engineering majors are eligible to participate in a wide variety of programs, particularly international research programs and general engineering study abroad programs. There are also study abroad programs that offer ENU classes that convalidate in the US, such as those from the Korea Advanced Institute of Science and Technology and Politecnico Milano.
References
Model Semester: UF Study Abroad for Nuclear Engineers
Program List: https://www.eng.ufl.edu/students/students/international/study-abroad/semester-programs/
UF International Engineering Programs Director: https://www.eng.ufl.edu/students/students/international/gettingstarted/make-an-appointment/