(1) A laboratory shall be provided with continuous mechanical ventilation designed to ensure that flammable vapours,
(a) do not accumulate in the laboratory,
(b) are prevented from migrating to other parts of the building,
(c) do not accumulate in the ventilation system,
(d) are exhausted to the outdoors, and
(e) are not returned to the building.
(2) A ventilation system required in this Subsection shall be provided with monitoring devices that,
(a) indicate that the ventilation system is in operation, and
(b) sound an alarm if the ventilation system is malfunctioning.