Refrigerator should be away from LPG cylinder. Why?
If you are talking about a Refrigerator that runs on LP gas the tank needs to be away from the fridge because the fridge has an open flame inside, on a hot day it is possible that the LP tank can vent and release some gas, also when filling or changing tanks their is a small loss of gas, the open flame could ignite the gas and this is the reason the fridge should be separated.