Fireplace item (3)
'fireplace item' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for log that I've seen before include "Diary kept by ship's captain" , "Nautical record in timber?" , "A ship's journal" , "Written account of a voyage" , "Record book; tree part" .)
(Other definitions for andiron that I've seen before include "Firedog -- Odin ran (anag)" , "One supports burning wood" , "Firedog found on drain" , "one of two keeping fire going" , "bar near fire" .)