News & Media

17 results found
Filtered by Emergency Response, Radiation Measurement, and Reactor Operations
JUNE 26, 2019
Web Feature

Tough Materials for Tough Environments

Researchers apply numerical simulations to understand more about a sturdy material and how its basic structure responds to and resists radiation. The outcomes could help guide development of the resilient materials of the future.
OCTOBER 19, 2017
News Release

How Low Can You Go?

PNNL scientists served as lead guest editors for a special issue of the Journal of Applied Radiation and Isotopes.
APRIL 26, 2017
News Release

Steel Structure Shelters Sarcophagus at Chernobyl

April 26 marks the 31st anniversary of the explosion at the Chernobyl Nuclear Power Plant's Unit 4 reactor. Battelle researchers at PNNL were involved in an international consortium to look at long-term safety and containment of Unit 4. T
NOVEMBER 1, 2015
Web Feature

New Watts Bar Reactor Gets Green Light for Operations

On October 22, the U.S. Nuclear Regulatory Commission (NRC)​​​​​​​granted Tennessee Valley Authority's (TVA's) Watts Bar Nuclear Generating Station a 40-year operating license for its new Unit 2 reactor. This is the first nuclear reactor to be granted an operating license by the NRC in two decades.
OCTOBER 12, 2015
Web Feature

Corrosion Cracking: When Does it Really Start?

Pressurized water nuclear reactors in the United States generate about 13 percent of U.S. electricity. Though efficient, these reactors face a unique challenge with stress corrosion cracking (SCC). This type of corrosion is one of the primary life-limiting degradation mechanisms of nickel-base alloy pressure boundary components, such as instrumentation and control rod nozzles, the welds that attach these nozzles to the reactor vessel, and welds that connect feedwater piping to the reactor vessel. As interest grows in a more sustainable and efficient fleet of nuclear reactors across the world, there is increasing interest in characterizing SCC initiation response.