Related Rule
Practice Relating to Rule 42. Works and Installations Containing Dangerous Forces
Section A. Attacks against works and installations containing dangerous forces and against military objectives located in their vicinity
The Report on the Practice of Brazil states that Brazil has ratified the 1977 Additional Protocols I and II and, therefore, “the protection afforded by the Protocols to certain works and installations is binding for Brazil”. 
Report on the Practice of Brazil, 1997, Chapter 1.9.