Technical Booklet L Combustion Appliances and Fuel Storage Systems·Page 18
Fire wall definition
A fire wall shields a fuel tank from thermal radiation emitted by a fire in an adjoining building or boundary.
Fire wall – a method of shielding a fuel tank from the thermal radiation from a fire in the adjoining building or boundary.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet L - Combustion Appliances and Fuel Storage Systems.pdf