Warning This information has been archived because it is outdated and no longer relevant.

Archived Content

Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats on the "Contact Us" page.

4.4.3.1.(3)
ApplicationIntent
OS1
ObjectiveOS1 Fire Safety
Attribution
[F20,F81-OS1.1]
Application
Application 1: 
Pressure applied to tanks during leak detection testing of storage tanks for flammable liquids or combustible liquids, in buildings, structures and open areas.
Exceptions: 
except:
  • as stated in Sentence 4.4.1.1.(2), which applies to storage tanks that have been taken out of service,
  • 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,
  • as provided in Subsection 4.10.3., which applies to storage tanks and containers for distilled beverage alcohol at distilleries, and
  • as exempted in Sentence 4.5.1.1.(2), which applies to:
    • tubing or casings and piping for oil or gas wells,
    • transmission pipelines,
    • piping for vehicles, aircraft, watercraft and portable or stationary engines,
    • piping systems in distilleries, and
    • piping within the scope of the applicable provincial codes regulating boilers and pressure vessels.
Top of Page
Intent
Intent 1: 
To limit the probability of excessive pressure in tanks during tests, which could lead to tank damage, which could lead to the escape of liquid, which could lead to the ignition of vapour from a nearby ignition source, which could lead to harm to persons.
Top of Page