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6.2.2.3.(2)
OS3
ObjectiveOS3 Safety in Use
Attribution
Application
Application 1: 
Carbon monoxide and nitrogen dioxide monitoring devices for mechanical ventilation systems that are designed to limit the concentration of carbon monoxide or nitrogen dioxide in storage garages serving buildings to which Part 6 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 6].
Application 2: 
This also applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], with respect to the ventilation of storage garages for more than 4 motor vehicles in residential occupancies, as stated in Sentence 9.32.1.1.(3).
Exceptions: 
except as stated in:
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Intent
Intent 1: 
To limit the probability that a lack of appropriate devices to activate mechanical ventilation systems will lead to excessive levels of carbon monoxide or nitrogen dioxide, which could lead to the acute poisoning or asphyxiation of persons.
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