General Requirements: When does a Piping system require CRN registration in Alberta?
1. For a new pressure piping system fabricated in Alberta:
- Fluid: It must contain an expansible fluid.1
- Design Pressure: Pressure must be greater than 103 kPa (15 PSI)
- Volume: total internal capacity must be greater than 0.5 cubic metres (500 liters,132 gallon US, 17.6 cu.ft)
2. For an addition or modification to a registered system:
• When the enclosed volume to be added or modified is greater than 0.5 cubic metres.
3. For a pressure piping system fabricated outside of Alberta:
• “Design registration is required for all pressure piping fabricated outside Alberta,
regardless of its volume”.
- Form AB-83 must be completed and kept by the owner/user for at least 5 years.
- Form AB-81 must be completed by the contractor upon completion of the projectand submitted to ABSA.
- Skid units:
o The CRN for a skid system is not transferable between jurisdictions, since it is still linked to one particular installation.
o They must be registered in Alberta when they form part of a CRN- registered system (over 0.5 cubic metres), even when their own volume is less than 0.5 metres.
Exemptions: A piping system is exempt from registration when all of the following conditions are met:
- ???? Size: Pipe nominal size is less than or equal to DN 50, and
- ???? Pressure: Design Pressure is less than or equal to 1035 kPa (150 PSI), and
- ???? Temperature: Design Temperature is between minus 29 degrees Celsius and186 degrees Celsius (-20 < T < 366oF), and
- ???? Fluid: fluid must be either air, nitrogen, argon, carbon dioxide, steam or hotwater, and
- ???? Code Compliance: is constructed to the applicable ASME Code,Please note that Section 35 of Regulation 49/2006 is still in force.2Notes:
1. As an example of what this means: this statement excludes registration of a hydraulic system.
2. Section 35 in the Alberta Regulation 49/2006 touches on the owner’s duty to report to ABSA “anyunsafe condition, accident, or fire that occurs with respect to that pressure equipment.”
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