That's probably how it's done in your nearest port, as well as anywhere else. With actual storage and fire safety procedures (hopefully) better followed.
Same reason you have ammunition depots in the military and not mixed storage of your howitzer shells with MREs and socks. Partitioning hazardous stuff into dedicated holds with heightened access and fire security is how it's done everywhere.
These are the realities in many parts of the world: safety routines are followed only as much as to obtain the necessary international certification/rating for the site.
Consider this the next time there's discussion about merits of introducing nuclear power globally.