CASH is an international benchmarking program organised under an initiative of the OEDC-NEA (Nuclear Energy Agency). The main objective of CASH is to evaluate the reliability of predictive analysis tools and methods as well engineering practice know how to assess the seismic capacity of reinforced concrete shear walls to withstand strong earthquakes considered for beyond design situation.
The participation to the CASH program is open to experts from consulting firms, research organizations, NPP owners, regulatory authorities, and in general to all those accepting to perform computational prediction of experimentally tested and real structures.

The experimental reference case is based on the "SAFE" reinforced concrete shear wall panels tested at the European Laboratory for Structural Assessment (ELSA, Joint Research Centre). These tests were carried out on the main reaction wall using a pseudo-dynamic test program. This consists in applying loading evaluated by the computational pseudo-dynamic algorithm using hydraulic actuators. The tests were designed such that each specimen has a different natural frequency (4, 8 or 12 Hz). A unique input signal is used for the entire campaign. Each specimen, the input signal is calibrated to reach the design level of the structure. Additional runs are the applied with higher intensities until the ultimate capacity is reached.

During the first stage of the program, from November 2014 to September 2015, participants are invited to qualify and calibrate their numerical models based on several experimental loading conditions (static pushover, cyclic and dynamic). The second stage, from November 2015 to November 2016, the participants would have to assess the capacity of scale 1 shear wall extracted from an NPP building, predicting its response to various seismic loading intensities (pushover, cyclic and dynamic analyses) and provide estimates on the state of cracking of the RC wall (position, opening, etc).

Participation is open to experts from consulting firms, research organizations, NPP owners, regulatory authorities and their technical support organizations, NPP designers and vendors, and industry associations and observers.

Organising committee and contact
Véronique LE CORVEC (contact)     NECS - Contact mail Tel.: +33 1 41 13 08 51