What does the cryptic crossword clue "Peg worked frantically in volatile situation (6,3)" mean?

The wordplay uses an anagram. anagram of PEG + WORKED = POWDERKEG The answer is POWDERKEG.

Peg worked frantically in volatile situation (6,3)

Daily Mail Cryptic #17215 | 16 Down | 2023-10-26 flower