Design of hazardous areas

Attention: Architects and professional engineers

The design of hazardous areas requirements in the Building Code apply to the indoor storage, handling, use and processing of dangerous goods, products, whether raw or waste materials, goods in process, or finished goods.

Building permit applications for all occupancies that will contain hazardous substances or dangerous goods shall indicate so on the Ontario Building Code Analysis form. (attached)  Common occupancy types that may contain dangerous goods or hazardous substances include, but are not limited to, industrial occupancies (including warehouses), laboratories, doctors/dentists offices, medical supply stores, hospitals, nursing homes, schools, repair garages, and construction rental stores.

A Design of Hazardous Areas Manual was created to outline the process required to verify compliance with the Building Code.  Effective January 1, 2017, all building permit applications for occupancy types that may include the indoor storage of dangerous goods or hazardous substances shall include a questionnaire and all applicable data sheets. For a copy of the manual, please contact [email protected]

The requirements contained within Subsection 3.3.6. reflect some, but not all design requirements contained in Division B of the Fire Code as it relates to the design of hazardous areas.  Design professionals should refer to the Fire Code for additional requirements that may apply to their circumstances.

For more information

Jeremy Laur, Program Manager of Permit Services
519-837-5615 extension 2379
[email protected]