Journal
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
Volume 138, Issue -, Pages 8-18Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijpvp.2016.01.002
Keywords
Corroded pipeline; Colony of defects; Interaction rule; Failure pressure
Funding
- Program for New Century Excellent Talents in University [NCET-11-0051]
- Ministry of Science and Technology of China [2011CB013702]
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The finite element models of corroded pipelines with colony of defects composed of two longitudinal or circumferential aligned defects, and four defects arranged in rhombus shape are established and validated, respectively. Considering the different longitudinal and circumferential spacings between defects, the cases related to 13 types of colony of defects are computed. Based on the ratio of failure pressure of each case to the failure pressure of corresponding base case, the interaction between defects is determined. Then a new interaction rule is proposed. Compared with the performance of DNV RP F101, the API 579, the BS 7910, the Kiefner and Vieth, and the Pipeline Operator Forum (POF) interaction rules which are applied to FE cases, the proposed rule could satisfactorily identify whether or not the interaction between defects occurs. (C) 2016 Elsevier Ltd. All rights reserved.
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