Post-Fukushima Flood Studies U.S. Nuclear Power Plants throughout the United States

GZA evaluated flood hazards at 23 U.S. nuclear power plants after a directive was issued to the nuclear power industry by the U.S. Nuclear Regulatory Commission (NRC), prompted by the 2011 earthquake and tsunami that triggered a nuclear accident at the Fukushima, Japan plant.

CHALLENGE
The NRC issued a three-year deadline by which all U.S. nuclear plants were required to re-evaluate their flood vulnerability.

SOLUTION
A team of GZA engineers and water hazard experts worked to characterize flood risks at 35% of the U.S. nuclear plants. GZA introduced state-of-the-art technologies such as region-specific meteorology studies, probabilistic analysis of flooding due to storm surge, and hydrodynamic computer modeling for analysis and visualization of river, storm surge and waves, and local precipitation flooding.

GZA’s studies assessed the flood hazard of most U.S. major river watersheds, the Gulf of Mexico, and the U.S. East Coast. The results of the studies were used to assess the vulnerability of these critical facilities and to create flood mitigation measures and response plans.

BENEFITS
GZA’s assessments encompassed critical rivers, watersheds and coastlines in our country, informing our flood hazard mitigation consulting not only for the nuclear power industry, but other vulnerable infrastructure, institutions, industry, and residential areas.