PSI - Issue 37

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 ir t. tr t r l I t rit r i ( )

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

ScienceDirect

Procedia Structural Integrity 37 (2022) 225–232

© 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 Pedro Miguel Guimaraes Pires Moreira Abstract The reactor pressure vessel (RPV) is subjected to many cyclic loadings critical of which is the integrity risk posed by pressurized thermal shock (PTS) loadings induced by one of the most frequent anticipated operational occurrences - inadvertent operation of the safety injection system (SIS). In this paper, the fracture mechanics analysis for an ageing pressurized water reactor subjected to PTS induced by inadvertent actuation of the SIS is performed using a proposed simplified Abaqus-FRANC3D co-simulation method. A three-dimensional (3-D) finite element half-symmetric model of a typical pressured water reactor RPV is used to perform thermal-mechanical stress coupling analysis. 3-D fracture mechanic submodel with an assumed surface crack is created for the computation of the transient integrity parameter-stress intensity factor (SIF), using M-integral approach coupled in the proposed co-simulation method. Subsequently ASME method is used to evaluate the vessel’s material fracture toughness. Finally, the SIFs obtained with the simplified co-simulation method is compared with the conventional virtual crack-closure technique (VCCT), and the result show good agreement. This work serves as a useful reference for fast crack propagation and life prediction analysis of ageing PWR RPVs. © 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 Pedro Miguel Guimaraes Pires Moreira Keywords: Pressurized thermal shock; Fracture mechanics; Reactor pressure vessel; Safety injection system; Stress intensity factor; FRANC3D t t r t r r r l ( ) i j t t li l i riti l f i i t i t rit ri r ri t r l ( ) l i i f t t fr t ti i t r ti l rr - i rt t r ti f t f t i j ti t ( I ). I t i r, t fr t r i l i f r i r ri t r r t r j t t i i rt t t ti f t I i rf r i r i lifi - - i l ti t . t r - i i l ( - ) fi it l t lf- tri l f t i l r r t r r t r i t rf r t r l- i l tr li l i . - fr t r i l it rf r i r t f r t t ti f t tr i t i t rit r t r- tr i t it f t r ( I ), i -i t r l r l i t r - i l ti t . tl t i t l t t l’ t ri l fr t r t . i ll , t I t i it t i lifi - i l ti t i r it t ti l irt l r - l r t i ( ), t r lt r t. i r r f l r f r f r f t r r ti lif r i ti l i f i . 2 t rs. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-N li ( tt :// r ti . r /li / - - / . ) r-r i r r i ilit f r i l i r ir r ir : r ri t r l ; r t r i ; t r r r l; f t i j ti t ; tr i t it f t r; ICSI 2021 The 4th International Conference on Structural Integrity Numerical Fracture Analysis of a Reactor Pressure Vessel based on Abaqus-FRANC3D Co-simulation Method M.Annor-Nyarko a,b,c , Hong Xia a,b * a Key Laboratory of Nuclear Safety and Advanced Nuclear Energy Technology, Ministry of Industry and Information Technology, Harbin Engineering University, Harbin 150001, China b Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China c Nuclear Installations Directorate, Nuclear Regulatory Authority, Ghana M.Annor a, , , a r t r f l r f t l r r l , i istr f I str I f r ti l , r i i ri i rsit , r i , i b t l i l r f t i l ti l r t r , r i i ri i rsit , r i , i c l r I st ll ti s ir t r t , l r l t r t rit ,

* Corresponding author. Tel.: 045-182-569-450; fax: 045-182-518-400 E-mail address: xiahong@hrbeu.edu.cn rr s i t r. l.: - - - ; f : - - - r ss: i r . . - il

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 Pedro Miguel Guimaraes Pires Moreira - t rs. lis I . . is is ss rti l r t - - li s ( tt s:// r ti s. r /li s s/ - - / . ) r r s si ilit f r i l i r s ir s r ir r-r i

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 Pedro Miguel Guimaraes Pires Moreira 10.1016/j.prostr.2022.01.078