Shell  amended its   Shell Retail Engineering Network , Standard 08.18, by including NanoVapor suppression as best practice to gas-free Underground Storage Tanks.

This standard establishes specific requirements and preferred methods of making safe underground petroleum storage components by mainly making components inert or making Gas Free to remove the risk of explosion before any work is done.

Nanovapor replaces other more contaminant, expensive, unsafe and time consuming process ( Water filling, Nitrogen purging, dry-ice)