B-1.1, r. 3 - Safety Code

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278. A key-operated installation for loading tank trucks or tank cars supplied by the aboveground tank at a bulk plant must have a remote-control shut-off valve that opens only when the motor of the loading pump is operating.
The valve must be located at the outlet of the tank in such manner as to meet the requirements of section 277 if the bulk plant is not under the continuous supervision of the owner.
O.C. 221-2007, s. 1.