Twin limited personal failure (8)
I believe the answer is:
meltdown
'failure' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'twin limited personal' is the wordplay.
'twin' becomes 'me' (I can't justify this - if you can you should believe this answer much more).
'limited' becomes 'ltd'.
'personal' becomes 'own' (eg one's own possessions are personal possessions).
'me'+'ltd'+'own'='MELTDOWN'
Can you help me to learn more?
(Other definitions for meltdown that I've seen before include "Disastrous event like overheating of nuclear reactor as in Chernobyl" , "Nuclear reactor accident" , "Serious nuclear accident" , "Total disaster" , "Disastrous overheating of core of nuclear reactor" .)