What does the cryptic crossword clue "Worker in Brussels feeds uranium into unsafe reactor (8)" mean?

The wordplay uses an anagram. anagram of REACTOR (synonym="REACTOR") + U (synonym="uranium") = EUROCRAT The answer is EUROCRAT.

Worker in Brussels feeds uranium into unsafe reactor (8)

Guardian Cryptic #29483 | 6 Across | 2024-09-09 flower