They so constructed and maintained that it prevents any leakage of petroleum. Generally all tanks of capacity exceeding 5,000 liters for the storage of petroleum Class C are surrounded by an enclosure wall or placed inside a pit. Such tanks are constructed and maintained to contain the maximum quantity of petroleum capable of being contained in largest tank within such enclosure or pit, without leakage.
ujumla mizinga yote ya unaozidi lita 5,000 kwa ajili ya kuhifadhi tabaka la mafuta ya petroli c ni kuzungukwa na ua ukuta au kuwekwa ndani ya shimo. mizinga hiyo ni ujenzi na kudumishwa na vyenye wingi upeo wa petroli uwezo wa kuwa zilizomo katika kubwa tank ndani ya enclosure vile au shimo, bila kuvuja.