Probabilistic Safety Assessments (PSA), which was introduced in the 1970s as complement to deterministic safety analysis methods, is a well-established tool that supports design and safety assessment ...

Severe accidents at nuclear reactors have occurred much more frequently than what risk-assessment models predicted. The probabilistic risk assessment method does a poor job of anticipating accidents ...

Cross-impact analysis is widely employed to inform management and policy decisions based on the formulation of scenarios which are defined as combinations of outcomes of relevant uncertainty factors.

The Nuclear Regulatory Commission (NRC) should examine the benefits of mandating that nuclear plants in the U.S. add probabilistic risk assessment (PRA) to methods used to evaluate and prepare for ...

National security experts said climate forecasters often focus on averages, or the most likely scenario, without determining the probability of an extreme climate shift Tell us what you don't know.

The updated site-specific risk assessment (uSSRA) for the proposed National Bio- and Agro-Defense Facility (NBAF) released in 2012 is a substantial improvement over the original 2010 site-specific ...

A variety of risks and benefits are associated with on-orbit servicing of the Hubble Space Telescope (HST). There are risks to human safety, as well as several types of programmatic risks, including ...

The multiple and ongoing accidents at the Fukushima reactors come as a reminder of the hazards associated with nuclear power. As with the earlier severe accidents at Chernobyl and Three Mile Island, ...