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4.3.1.3.(1)
ApplicationIntent
OS1OH5
ObjectiveOS1 Fire Safety
Attribution
[F43,F80,F81,F20,F01-OS1.1]
Application
Application 1: 
Design and construction of low pressure storage tanks for flammable liquids and combustible liquids, in buildings, structures and open areas.
Exceptions: 
except:
  • as exempted in Sentences 4.1.1.1.(2) and (3), which apply to unique hazards at process plants, in transportation, for oil burning equipment, on farms and isolated construction projects, and the storage of aerosol products, and
  • as provided in Subsection 4.10.3., which applies to distilled beverage alcohol at distilleries.
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Intent
Intent 1: 
To limit the probability of the escape of liquid from the tank, which could lead to the ignition of vapour, which could lead to a fire or explosion, which could lead to harm to persons.
Intent 2: 
To limit the probability of the release and subsequent ignition of vapour from the tank, which could lead to a fire or explosion, which could lead to harm to persons.
Intent 3: 
To limit the probability of the buildup of excessive internal pressure in the tank, which could lead to the failure of the tank, which could lead to the escape of liquid, which could lead to the ignition of vapour, which could lead to a fire or explosion, which could lead to harm to persons.
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