Three aged fuel storage tanks at Cattedown in Plymouth, UK, are to be replaced with larger, more modern and safer ones.
Members of the city council planning committee have approved the scheme and a plan to build a new tank at the Mayflower terminal.
Work by Greenergy International will include remotely-controlled cut-off valves. Automatic switch devices allow the supply of fuel to the tanks to be stopped from a safe distance if there is an accident.
An impermeable membrane underneath the tanks to prevent leakage of fuel into the ground will also fortify environmental protection.
The company will upgrade the existing containment bunds from earth to concrete. The bunds would be designed to hold the tanks' fuel contents if they fail. They would also have a 10% margin for water used in firefighting.