Swagelok Fittings in CSA Z662 application
Swagelok Fittings in CSA Z662 application
(OP)
Hello, we are reviewing a design for an odorant tank in a natural gas distribution system in Alberta, Canada under CSA Z662. The tubing that connects the odorant tank to the Pipeline is 1/2" with Swagelok ends. Some of the valves also have Swagelok ends.
I can not find anything within CSA Z662 that allows me to use these. These fittings are used at every facility though, so I'm sure there is a reasonable way to justify their use. The components are all fine for pressure, temperature, materials, service fluid, etc.
The only way around it that I can see is to perform an engineering assessment, but that requires a risk assessment, an engineering assessment procedure with documented competencies, methodology, and acceptance criteria.
There must be a simpler way. If anyone has any experience with this justification, I would appreciate your feedback.
I can not find anything within CSA Z662 that allows me to use these. These fittings are used at every facility though, so I'm sure there is a reasonable way to justify their use. The components are all fine for pressure, temperature, materials, service fluid, etc.
The only way around it that I can see is to perform an engineering assessment, but that requires a risk assessment, an engineering assessment procedure with documented competencies, methodology, and acceptance criteria.
There must be a simpler way. If anyone has any experience with this justification, I would appreciate your feedback.





RE: Swagelok Fittings in CSA Z662 application
The odorant piping is probably made to the Canadian B51 standard. Swagelok has a CRN {Canadian Registration number) which authorizes that these fittings have been accepted and registered for use in Canada.
The odorant tubing is smaller than NPS ¾. Fittings 26 mm (NPS ¾) in diameter and over should be welded.
https://standards.terasen.com/stnds/DES-06-04-01.h... Design Requirements
RE: Swagelok Fittings in CSA Z662 application
Swagelok can provide you with a letter which states that their fittings are approved for fuels/natural gas uses in Ontario, within their limits. Suspect Swagelok will have a similar letter from the AHJ in every province.
RE: Swagelok Fittings in CSA Z662 application
Thanks for your response, the B51 justification is the one that I was overlooking. I was focusing on the B16.34 and API standards too much.
Much appreciated.