The Ontario Building Code | Fixtures Located in Chemical Storage Locations
7.4.3.4. Fixtures Located in Chemical Storage Locations
(1) A floor drain or other fixture located in an oil transformer vault, a high voltage room or any room where flammable, dangerous or toxic chemicals are stored or handled shall not be connected to a drainage system.
In Plain Language
Fixtures located in chemical storage areas have additional installation requirements, recognizing that a fixture drain in this kind of space could become a pathway for hazardous chemicals to enter the drainage system.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.