SEISMO Version 1.0: A Module for Simulation of SEISMO-Mechanical Scenarios, Model Description, and User Guide. Iterative Performance Assessment Phase 2

摘要

The user guide describes the SEISMO code, its structures, the associated simulation model, and instructions for its use. The SEISMO code has been used in the Iterative Performance Assessment (IPA) Phase 2 exercise to simulate the effect of a seismic event on the integrity of the proposed high-level waste (HLW) repository at the Yucca Mountain site. The code models the seismic event as a random process and then assesses the consequences of the event on the HLW repository in terms of the premature release of radioactivity to the geologic media. The SEISMO code is run under the Total-System Performance Assessment (TPA) code. SEISMO determines the time at which the waste package fails by comparing the probability associated with the acceleration needed for failure to the probability that there will be an earthquake of that magnitude within the 10,000 years. In the event of premature failure of the waste packages in the repository region, these data are then communicated to other modules of the TPA code.