Annual report cards out for U.S. power reactors

March 9, 2023, 9:30AMNuclear News

The Nuclear Regulatory Commission announced last Friday the issuance of 2022 assessment letters to operators of the nation’s commercial nuclear reactors, noting that of the 93 units in the agency’s Reactor Oversight Process, 87 “reached the highest performance category in safety and security,” known as Licensee Response.

Nuclear power resilience in a changing climate

August 5, 2022, 3:01PMNuclear NewsSusan Gallier

All 92 U.S. power reactors operating today need water—in the right place and at the right time. But extreme weather events, including floods, droughts, hurricanes, and heat waves, upend expectations and demand resilience: the ability to anticipate, accommodate, and recover from adverse impacts.

Resilience was built into today’s nuclear power plants decades ago. Weather data and climate forecasts not available then can be factored into risk analysis now to ensure the plants remain resilient in a changing climate.

Floating nuclear power plants

July 29, 2022, 3:25PMNuclear NewsMichael Golay, Jacopo Buongiorno, and Neil Todreas
The offshore plant combines two mature technologies: the floating rig and the nuclear reactor.

In recent years, the rate of building new nuclear power plants has slowed internationally except in some rapidly developing countries. In Western countries that have considerable experience with nuclear power, completion of new projects on time and on budget has become more difficult. Shipyard-fabricated plants may offer a new direction for meeting international needs and responding to requirements for better cost control and safety. In this article we offer an overview of the floating nuclear power plant concept, including experience with it to date and its key engineering and strategic features, along with related uncertainties and needed conditions for future projects to be successful.

NN Asks: How do a meteorologist’s forecasts shape nuclear utility planning?

July 6, 2022, 12:06PMNuclear News

Jennifer Call, Meteorologist:
When you think of a meteorologist, what is the first thing that comes to mind? For many it is your local TV meteorologist delivering a weathercast for the 5 o’clock news, or perhaps a meteorologist at the National Weather Service issuing severe storm warnings. But did you know that utilities rely on meteorologists for daily support?

Jennifer Call ( is an American Meteorological Society Certified Consulting Meteorologist (CCM) and an atmospheric analyst for the Tennessee Valley Authority. She serves on the ANS Standards Board and is the Atmospheric Subcommittee chair under the Environmental and Siting Consensus Committee.