API Recommended Practice 1183, 1st Ed. API Recommended Practice (RP) 1183, Assessment and Management of Dents in Pipelines has been published The new RP is designed to help maintain the structural integrity of pipelines by addressing mechanical issues
Addendum to API RP 1183 for Improved Dent Screening Since being issued, RP 1183 has been applied by pipeline operating companies and engineering consultants providing services to the energy pipeline industry to evaluate dents and deformations on pipeline systems and to support mitigation and repair decisions
Dent strain and stress analyses and implications concerning API RP 1183 . . . While most of the available codes allow plain dents with depth less than 6% of the pipe’s outside diameter (Zhao et al , 2022), they require immediate remedial action for pipes in high consequence areas or when a gouge or crack is known to exist in the dented pipe
Assessment and Management of Pipeline Dents A prior API publication, API Publication 1156, described the effects of dents on liquid petroleum pipelines but was issued prior to the hazardous liquids pipeline integrity management rule
Standards and methods for dent assessment and failure prediction of . . . The API RP 1183 provides methods for assessment of fatigue life of dented pipelines (API RP 1183, 2020), where three levels of assessment include dent geometry severity ranking (Level 1), dent geometry and load severity ranking (Level 2), and dent fatigue life assessment (Level 3)
Safety Advisory SA 2025-01 Evaluation of Dents in Pipe The CER expects companies to review and reassess the pipeline dents that were previously determined to be non-injurious based on Table 6 of API RP 1183 First Edition’s conservative estimates, using alternative industry recognized screening or assessment methodologies
Dent Assessment and Management: API Recommended Practice 1183 This paper will focus on how pipeline operators can derive value from this step change in integrity management for dents The paper describes the basis for the dent screening and integrity assessment tools included in the RP