The fire protection fuel tank needs a brick bund wall to contain spillages.
Industry standards requires that the capacity of the tank must be sufficient to allow the engine to run on full load for 6 hours and provision shall be made for the retention of any spilled fuel using a brick or similar material bund which shall contain not less than the contents of the fuel tank plus 10%.
It is an environmental requirement to prevent spillage of hazardous materialand also a safety precaution to prevent injury by slip and fall.