B-1.1, r. 3 - Safety Code

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251. Every airport outlet tank for storing aviation fuel installed after 11 July 1991 must meet the following requirements:
(1)  have a manhole;
(2)  if the tank is fibreglass, all its metallic components must be bonded; and
(3)  have at least a 1% slope.
O.C. 221-2007, s. 1.