To limit the probability that cooking vapours or residue will accumulate and subsequently be ignited, which could lead to a fire or explosion, which could lead to:
To limit the probability that commercial cooking equipment exhaust will ignite nearby combustible material, which could lead to a fire, which could lead to harm to persons.
To limit the probability that fire protection systems for commercial cooking equipment exhaust will not properly operate in a fire situation, which could lead to the spread of fire to other parts of the building, which could lead to harm to persons.
To require upgrading of commercial cooking equipment exhaust and fire protection systems in existing buildings to the standards for new buildings in the National Building Code of Canada.