PSI - Issue 42

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 il l li t . i i t. tr t r l I t rit r i ( )

www.elsevier.com/locate/procedia . l i r. /l t / r i

ScienceDirect

Procedia Structural Integrity 42 (2022) 315–320

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the 23 European Conference on Fracture – ECF23 Abstract The ASME and DNV criteria mainly assess large area defects on pressure pipelines. For small corrosion defects, the use of these approaches leads to unduly conservative results for the assessment of pipeline integrity. In the operation of piping systems, the most common cause of accidents is the synergy of multiple effects on the piping. This paper analyse the cases of small corrosion defects when additional bending acts together on a pressure pipeline. Through experimentally validated simulations, diagrams can be produced to assess the safety of pipeline operation: e.g. for nominal stress from internal pressure, corrosion defect size and length of the deflected pipeline, an increase in stress with increasing deflection size from the original pipeline centerline can be seen © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) it i i l l t i li . ll i t , t t l t l ti lt t t i li i t it . t ti i i t , t t i t i t lti l t t i i . i l t ll i t iti l i t t t i li . i t ll li t i l ti , i t t t i li ti : . . i l t i t l , i t i l t t l t i li , i i t it i i l ti i t i i l i li t li th . li l i .V. This i ti l t li tt :// ti . /li / / . / Peer-review under responsibility of 23 European Conference on Fracture - ECF23 : i li i t rit ; rr i f t ; iti l i ; i r i ; Peer-review under responsibility of 23 European Conference on Fracture - ECF23 Keywords: pipeline integrity; corrosions defects; additional bending; shape inaccuracies; 1. Introduction The operation of pressure pipelines is designed with a margin of safety that expresses the margin against plastic deformations in the pipeline shell [1, 2]. The operating pressure of the medium in the pipelines is regulated and multi- ti i li i i it i t t t t i i t l ti ti i t i li ll , . ti t i i t i li i l t lti . i 23 European Conference on Fracture - ECF23 Influence of additional factors on the integrity of pipelines with small corrosion defects Chmelko. a *, Šulko, M. a Garan, M. a Zvirko, O. b de Jesus, A.M.P. c a Slovak Univetsity of Technology, Faculty of Mechanical Engineering, Námestie slobody 17, Bratislava 812 31, Slovakia a b c a l i t it f l , lt f i l i i , ti l , ti l , l i b National Academy of Sciences of Ukraine, ISP H. V. Karpenko Physico- Mechanical Institute, Ľviv, Ukraine c Department of Mechanical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal i , I . . i - i l I tit t , i , i c t t f i l i i , lt f i i , i it f t , - t , t l b ti l f i f

* Corresponding author. Tel.: +421257296225. E-mail address: vladimir.chmelko@stuba.sk i t r. l.: . - il : l i ir. l t . rr

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of 23 European Conference on Fracture - ECF23 l i r . . i i rti l r t - - li ( tt :// r ti . r /li / - - / . /) i i ilit t - t r . li

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the 23 European Conference on Fracture – ECF23 10.1016/j.prostr.2022.12.223