8.48. Siting of an aboveground tank must conform to the requirements of the following Tables 2 and 3:TABLE 2
SITING OF ABOVEGROUND TANKS
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Minimum distance, in metres, measured
horizontally, between any point on
outside tank shell and
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Tank Product Dike centre line Closest Property
capacity when required by building* line
(Litres) sections 8.60 and
8.61
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2,000 to Class 1 D D D
5,000 Class 2 and 3 0.5 0.5 1.5
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5,001 to Class 1 D D D
47,000 Class 2 and 3** 1.5 1.5 1.5
Class 3 - flash 0.5 0.5 1.5
point above
93.3 °C
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47,001 to Class 1 D D D
200,000* Class 2 and 3** D D D
Class 3 - flash 1 1 D
point above
93.3 °C
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200,001 to All D 5 5
400,000
400,001 to All D 9 9
2,000,000
2,000,001 to All D 12 12
4,000,000
More than All D 15 15
4,000,000
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D: The greater distance between 3 m and one-half tank height. Tank height is measured from the bottom of the diked area.
* For tanks installed inside a building, distance is measured from the tank shell to the walls and ceiling of the building housing them.
** Class 3 products with a flash point not above 93.3 °C.
TABLE 3
DISTANCES BETWEEN TWO ABOVEGROUND TANKS
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Tank capacity Minimum free distance
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Tanks where none exceeds 1 m
230,000 L
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Tanks of various capacities, One-half of smallest tank
one only exceeding 230,000 L diameter, but never less than 1 m
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Tanks of equal capacity, each One-half diameter of one tank
exceeding 230,000 L
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Tanks of various capacities, One-half diameter of smallest
each exceeding 230,000 L tank
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