(1)The petroleum storage tanks shall be located in dyked enclosures with roads all around the enclosure and all dyked enclosures shall be provided with proper discharge system to prevent accumulation of oil or water in the enclosures.(2)The layout and design of dyked enclosures for petroleum storage tanks shall be in accordance with the Oil Industry Safety Directorate Standard, that is, OISD-STD-118 or its revised version.
