Fractures bringing torment into the Civil Service (6)
I believe the answer is:
cracks
'fractures' is the definition.
(cracking is a kind of fracturing)
'torment into the civil service' is the wordplay.
'torment' becomes 'rack' (racking is a kind of tormenting).
'into' indicates putting letters inside.
'the civil service' becomes 'cs'.
'rack' going inside 'cs' is 'CRACKS'.
'bringing' acts as a link.
(Other definitions for cracks that I've seen before include "Attempts" , "They're how the light gets in, according to Leonard Cohen" , "'Fractures, splits (6)'" , "Splits; quips" .)