In I Corinthians 3 it is the believer’s works, not the believer himself, that will be tested by fire.
Paul is not speaking of literal fire any more than he is of literal wood and gold. He is speaking metaphorically, calling some works wood, hay, stubble....which fire burns combustible.... and others gold, silver and precious stones... which fire purifies.
Whatever is not built on the true foundation will be burnt. It says nothing of punishments but of the quality of ones works related to their rewards. There is nothing here or anywhere else in Scripture to support Catholicism’s view that flames in a spiritual zone purge the individual of the sins that were not cleansed while they were alive taking the sacraments...Eucharist...which by believing in pugatory cleansing then that null and voids the sacrement rite they attest to which makes them pure.
BTW..am so glad your posting..enjoying your reads.