Once the uranium cartridge is depleted after several years, that becomes waste. There are mostly 2 ways to deals with it: 1. Like US or Sweden, you take it as

Once the uranium cartridge is depleted after several years, that becomes waste. There are mostly 2 ways to deals with it: 1. Like US or Sweden, you take it as-is and bury it. 2. Like France and Japan, you recycle it to make more cartridges. France has a dedicated facility for it, Japan used to send its waste to France for recycling.