Failure Assessment Diagram in Structural Integrity Analysis of Steam Generator Tubes

 

Autores
Bergant, Marcos Antonio; Yawny, Alejandro Andres; Perez Ipiña, Juan Elias
Tipo de recurso
artículo
Estado
Versión publicada
Año de publicación
2015
País
Argentina
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio
CONICET Digital (CONICET)
Descripción
The assessment of the structural integrity of Steam Generator Tubes (SGTs) in nuclear power plants has been receiving increasing attention in the literature in the last years due to the negative impact related to their failures. Diverse failure prediction methodologies were proposed in the past to ensure tube integrity by fulfilling regulatory authorities’ requirements. They have lead however to overly conservative plugging or repairing criteria like the so-called “40% criterion”. In the present work, in line with modern approaches, an alternative more realistic methodology based on the Failure Assessment Diagram (FAD) is proposed. With that purpose, different studies available in the literature dealing with the experimental determination of fracture toughness of SGT materials were firstly reviewed. Using the results reported in these researches, the FAD was used for predicting the failure modes (i.e., ductile fracture or plastic collapse) of defective SGTs for varied crack geometries and loading conditions. The present analysis indicates the potentiality of the FAD as a comprehensive methodology for predicting the failure loads and failure modes of flawed SGTs.
Idioma
inglés
OAI Identifier
oai:ri.conicet.gov.ar:11336/53630
Enlace del recurso
http://hdl.handle.net/11336/53630
Nivel de acceso
Acceso abierto
Materia
STEAM GENERATOR TUBE
FAD
FRACTURE TOUGHNESS
J-INTEGRAL
J-RESISTANCE CURVE
Recubrimientos y Películas
Ingeniería de los Materiales
INGENIERÍAS Y TECNOLOGÍAS