TY - JOUR
T1 - Numerical analysis of the BWR-5 beltline region containing a crack postulated for an extended period of operation
AU - Montejo, Salatiel Pérez
AU - López, Pablo Ruiz
AU - Mendoza, Gilberto Soto
AU - Molina, Alejandra Armenta
AU - García, Abraham Villanueva
AU - Hernández Gómez, Luis H.
N1 - Publisher Copyright:
© 2019 The Authors. Published by Elsevier B.V.
PY - 2019
Y1 - 2019
N2 - In the case of a BWR-5, the wall of the reactor vessel located adjacent to the core is named beltline and it is subjected to neutron embrittlement, lowering the fracture toughness and increasing the yield strength of the material. Cracks can be developed in the internal surface of this area. In this paper, a semi elliptical part through thickness crack has been postulated along the axial direction. Its depth is 1.25 inch which is 0.25 of the thickness of the wall vessel and its length is 6 times the crack depth (7.5 inches). The material of the vessel is a low alloy carbon steel. In order to consider an extended period of operation, the analysis must cover sixty years of operation. The normal conditions of operation and start-up and shutdown transients have to be taken into account. For this purpose, a numerical evaluation was done with the Finite Element Method in conjunction with linear elastic fracture mechanics. This analysis was compared with the results of the procedure under the scope of the Appendix G of the ASME Code Section XI and the NUREG-0800. The results were used to establish the pressure and temperature limits.
AB - In the case of a BWR-5, the wall of the reactor vessel located adjacent to the core is named beltline and it is subjected to neutron embrittlement, lowering the fracture toughness and increasing the yield strength of the material. Cracks can be developed in the internal surface of this area. In this paper, a semi elliptical part through thickness crack has been postulated along the axial direction. Its depth is 1.25 inch which is 0.25 of the thickness of the wall vessel and its length is 6 times the crack depth (7.5 inches). The material of the vessel is a low alloy carbon steel. In order to consider an extended period of operation, the analysis must cover sixty years of operation. The normal conditions of operation and start-up and shutdown transients have to be taken into account. For this purpose, a numerical evaluation was done with the Finite Element Method in conjunction with linear elastic fracture mechanics. This analysis was compared with the results of the procedure under the scope of the Appendix G of the ASME Code Section XI and the NUREG-0800. The results were used to establish the pressure and temperature limits.
KW - ASME Code
KW - BWR
KW - Beltline
KW - Crack
KW - Neutron Embrittlement
UR - http://www.scopus.com/inward/record.url?scp=85074659709&partnerID=8YFLogxK
U2 - 10.1016/j.prostr.2019.08.017
DO - 10.1016/j.prostr.2019.08.017
M3 - Artículo de la conferencia
AN - SCOPUS:85074659709
SN - 2452-3216
VL - 17
SP - 123
EP - 130
JO - Procedia Structural Integrity
JF - Procedia Structural Integrity
T2 - 3rd International Conference on Structural Integrity, ICSI 2019
Y2 - 2 September 2019 through 5 September 2019
ER -