The BC Energy Regulator is informing pipeline permit holders of a potential issue related to a dent assessment methodology previously included in the American Petroleum Institute’s (API) Recommended Practice (RP) 1183 – Assessment and Management of Dents, First Edition.
DATE ISSUED: June 19, 2025
EFFECTIVE DATE: Immediately
As reported by the Canada Energy Regulator (CER), API RP 1183 - referenced by CSA Z662, Oil and gas pipeline systems standard - has been revised to remove the dent screening methodology previously presented in Table 6, due to concerns about its applicability.
Pipeline permit holders are reminded that the evaluation of imperfections on operational pipelines must be done in accordance with the requirements of Clause 10 of CSA Z662:23. The BCER expects individuals performing engineering assessments to remain informed of updates to assessment methodologies and, where necessary, to revise or update previous assessments if new information emerges that could invalidate previous assessment results.
Permit holders should refer to CER Safety Advisory 2025-01 and API’s Addendum to API RP 1183 for Improved Dent Screening for more information.
If you have any questions regarding this Safety Advisory, please contact:
Justin Nesbitt
Engineer, Audit and Integrity
BC Energy Regulator
Justin.Nesbitt@bc-er.ca
250-419-4438