Fittings

  • There are multiple categories of fittings and each must be registered separately. CSA B51 4.2.7
  • Here is the list with the fitting categories explained. Fitting Categories Explained.
  • Category H can also be a small pressure vessel under some circumstances or a collection of piping components provided none are greater than 6” and the total volume is less than 1.5 cubic feet. Fitting Categories Explained.
  • All fittings purchased to assemble Category H fittings must have valid CRN’s for the province of registration regardless of the design, manufacturer, or code. This is critical for pipe fitting registrations.
  • Fittings can be registered with an ASME or an ISO certificate. The QC must cover the scope of the registration. For example, the QC certificate must include fabrication if that is required to produce the component. A QC certificate that includes strictly design would not cover welding or assembly.
  • Fitting registrations include a notarized statutory declaration. This includes the drawing number, what is being provided for proof of design (calculations, burst test, etc.), as well as the manufacturers QC certification and the logo or icon that will be used to signify the CRN on the fitting.
  • There is a stipulation for someone other than the manufacturer to accept responsibility for the design. However, the following must be observed “The organization responsible shall provide a statutory declaration form and evidence of a valid quality control program acceptable to the regulatory authority in the province where the registration is sought. The manufacturer(s) shall be identified, and proof of their quality control program(s) shall also be provided.” CSA B51 4.2.
  • In some very specific cases UL certification may be used for fitting registrations. However, specific requirements must be met and testing procedures followed. These are not as straightforward as standard fitting registrations.
  • Fitting CRN’s are valid for 10 years from the original acceptance date provided the design does not change and the quality program used to register the design is kept current. When the expiry date is approaching the manufacturer can apply for a renewal.
  • There are some provinces that exempt certain categories of standard ASME fittings, but this must be determined on a case-by-case basis. “British Columbia, Manitoba and Saskatchewan have declared categories A, B, C exempt from registration provided they are designed to standards listed in Table 126.1 (B31.1), Table 326.1 (B31.3), Table 526.1 (B31.5) or Table 926.1 (B31.9). Category G is also exempt from registration if designed to ASME or National Board. Quebec has exempted Category A, B and C from registration when used in piping systems. Other provinces still require these items to be registered. See provincial regulations for more details” Provincial Contacts and Requirements.
  • SUBSECTION under fittings “notes about standard fitting registrations”
  • Standard ASME fittings such as B16.34 valves and B16.5 flanges do not have to be “proven” but they do need drawings that show all critical dimensions as well as having the materials listed. This will verify that all aspects of the design are in compliance with the code of construction. CSA B51 4.2.8 (a)
  • PVEng’s role in fitting registrations includes consultation, design review, and submission. The provincial jurisdictions require all submissions to be compliant with the applicable codes and we perform a review to confirm this. The amount of time required for our review depends entirely on the scope of products being registered.