IIAR Standards Proponents shall prepare designs based on the facility being interpreted with an importance factor “Normal” as per NBCC Table 4.1.2.1.

CSA B51 – Pressure Vessel & Piping Code.

CSA B52 – Mechanical Refrigeration Code.

2.Ĭodes and Standards The facility will be designed in accordance with good engineering practice, and the latest applicable provincial and local code requirements, including: Soldered joints are not permitted for new construction or repairs of refrigeration pressure pipingsystems subject to the requirements of the CSA B52 Mechanical Refrigeration Piping Code.Īnnealed copper: to ASTM B280, with minimum wall thickness as per CSA B52 and ASME B31.5. This Standard applies to refrigerant-containing components that are intended to be used in field- installed refrigerating and/or air-conditioning systems in accordance with CSA B52 and that are charged with the refrigerant identified for use in the components. Leak test to CSA B52 before evacuation to 2MPa and 1MPa on high and low sides respectively. Twenty-five cycles are expected over the lifetime of the line.He added that the prioritization of CADs is critical to shifting away from the current method, and explained that the prioritized CAD amendments are the BPV (CSA B51 Pressure Piping Code) and ( CSA B52 Mechanical Refrigeration) and in Fuels the CSA Z662 Oil and gas pipeline code. During the unit turnaround, cracking is found at midspan in the wrought piping material.Ī stress check determines that a hot, high alloy line does not pass the flexibility requirements per B31.3.

On steam out of the vessel, a 1’ deflection is observed in the pipe and remains after the steam out procedure is completed and the pipe returns to ambient temperature.Ī header of a reciprocating compressor has been stressed checked during operation vibration is observed in the line.

On heat up, a line comes into contact with adjacent header which is at ambient temperatureĭuring startup on a cold winter day in Grande Prairie, an outdoor gas line located above grade and constructed to Z662 is suddenly subjected to full line pressure and ruptures.Ī 12” Sch.40 header, bottom supported, 40 feet long runs vertically up a tower and connects to a nozzle. Elbow cracking after 10 years of service, 5000 cycles of heat up to 500 F

Csa b52 2018