In Ontario, TSSA does not automatically accept all of CSA B51’s definitions and positions for boilers and pressure vessels. The jurisdiction has the final authority, and can choose to accept or deny any code, or portion of code, as they deem fit. Furthermore, TSSA can also apply their own interpretation to the codes that they allow. TSSA’s Code Adoption Document (BPV-08-01), published May 1, 2008, lists what sections of the CSA B51 code are adopted, and what changes are made to it.
ASME Boiler and Pressure Vessel Code:
ASME codes become mandatory 6 months after the Date of Issuance. This is written in the Foreword to each code. As per the ASME site, one can make use of these codes before they are in effect by stating the year the code is published in. However, it is typical for Canadian jurisdictions to require the edition + addenda to be fully specified on the drawing.
TSSA will accept codes as soon as they are published, even before they become mandatory, but does not mandate it prior to the end of the six-month period. As well, TSSA will accept an older code if the purchase order for the project is dated when the older version of the code was still valid. This is also stated in the Foreword to the ASME Codes, as seen below.
Excerpt from Foreword of ASME codes,
After Code revisions are approved by ASME, they may be used beginning with the date of issuance. Revisions, except for revisions to material specifications in Section II, Parts A and B, become mandatory six months after such date of issuance, except for boilers or pressure vessels contracted for prior to the end of the six-month period.
Please remember that this has been supplied for information purposes only. Each Canadian Jurisdiction has their own requirements, and only the Jurisdictions may interpret the code.
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