Interruption long time afterwards causing damage (8)
I believe the answer is:
breakage
'damage' is the definition.
(I've seen this before)
'interruption long time afterwards' is the wordplay.
'interruption' becomes 'break' (synonyms).
'long time afterwards' becomes 'age' (I've seen this in other clues).
'break'+'age'='BREAKAGE'
'causing' acts as a link.
(Other definitions for breakage that I've seen before include "Result of clumsiness" , "Damage caused by smashing" , "Smashed article" , "Reimbursement for goods damaged in transit" , "Act of shattering" .)