Hull Construction Regulations

255 (1) Subject to subsection (2), the power ventilation system referred to in subsection 254(2) shall be operated continuously whenever motor vehicles are on board.

(2) Where it is impracticable to operate the power ventilation system referred to in subsection 254(2) continuously whenever motor vehicles are on board, the power ventilation system shall be operated for a limited period daily, as the weather permits, and for a sufficiently reasonable period of time prior to the unloading of any motor vehicle to ensure that the deck is free of gas prior to such unloading.

(3) Where the power ventilation system referred to in subsection 254(2) is not operated continuously whenever motor vehicles are on board, one or more portable combustible gas detecting instruments shall be carried on board and used to test for the presence of gas before any motor vehicle is unloaded.