We performed a hydrogen combustion analysis in the Advanced Power Reactor 1400 MWe (APR1400) containment during severe accident initiated by small break loss of coolant (SBLOCA) which occurred at lower part cold leg using multi-dimensional system (MHAS) to confirm integrity APR1400 containment. The MHAS was developed combining MAAP, GASFLOW, and COM3D simulate release, distribution nuclear powe...

Geothermal resources offer a stable low-carbon energy source. However, geothermal sites can collocate with the hypocenters of large-magnitude seismic events. Large events pose risk to public safety and are therefore liability for efforts develop resources. Here, we propose “fracture caging” limit induced event magnitudes present evidence from numerical model predictions, laboratory experiments,...

Interfaces between two different mixes or strengths of concrete appear in large concrete structures involving mass concreting such as dams, nuclear containment vessels, cooling towers etc., since joints between successive lifts are inevitable. These joints and interfaces are potential sites for crack formation, leading to weakening of mechanical strength and subsequent failure. Research involvi...

S? An impact test was conducted on a 1119 pound 2 foot diameter sphere 05 <f model at the Holloman Sled Track in Alamogordo, New Mexico, This test is part of a study to determine the feasibility of containing the fission products of a mobile reactor in the event of an impact,, The model simulated the reactor core, energy absorbing gamma shielding, neutron shielding and the containment vessel. I...

We present a contribution on the risk of hydraulic fracturing in CO2 geological storage using an analytical model of hydraulic fracturing in weak formations. The work is based on a MohrCoulomb dislocation model that is extended to account for material with fracture toughness. The complete slip process that is distributed around the crack tip is replaced by superdislocations that are placed in t...

Fracture in nacre-like alumina is studied experimentally and numerically with platelets main alignment direction perpendicular (along-configuration) to the one commonly tested (across-configuration) literature. In along-configuration, brittle failure noted after crack initiation no macroscopic deviation, unlike what observed across-configuration. However, NLA exhibits along configuration critic...