Developing software to assess the seismic risk of natural gas infrastructure: OpenSRA

As part of a multi-year study, the Pacific Earthquake Engineering Research (PEER) center in conjunction with Lawrence Berkeley National Laboratory (LBNL), NHERI SimCenter at Berkeley, Slate Geotechnical Consultants (Slate), and several subcontractors, developed an open-source seismic risk analysis ( OpenSRA ) program that implements performance-based earthquake engineering (PBEE) framework using user-friendly interface, capable operating on desktop computer. This effort is made up two elements: 1) research demand capacity models, laboratory testing, finite element modeling, 2) implementing these findings into backend calculation easy-to-use interface. The SimCenter, Consultants, PEER researchers integrative method to create efficient code useful updates current models addressing different forms seismically induced ground deformation (e.g., fault rupture, liquefaction, landslide) as well shaking. It quantifies resistance buried pipelines, heads, caprocks, aboveground components, then provides for estimating uncertainty both parameters. software allows end-user utilize according resolution available data (i.e., state-wide, regional, or site-specific). interface visualization inputs motion, liquefaction potential) outputs (risk leaks/breaks) overlaid maps California. industry updated method, software. enables end-users estimate damage their infrastructure. Using risk-informed decisions utility owners proactively cost-effectively maintain