Atomic flame’s failure is it’s reason for renown (5,2,4)

I believe the answer is:

claim to fame

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'it's reason for renown' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'atomic flame's failure' is the wordplay.
'failure' indicates anagramming the letters.
'atomic'+'flame'='atomicflame'
'atomicflame' anagrammed gives 'CLAIM TO FAME'.

'is' is the link.

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I've seen this clue in the Sydney Morning Herald.

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