Preparing to restart: Tsunami safety measures at Japanese nuclear power stations

February 28, 2013, 1:51PMANS Nuclear CafeWill Davis

The approach of the second anniversary of the Great East Japan Earthquake of March 2011 finds nuclear energy in Japan at a crossroads. After the quake and resulting tsunami, the nuclear plants in Japan that did not shut down immediately eventually all had to shut down for their required, scheduled outages. Political pressures, for the most part, prevented any near-term chance of any of them restarting, it seemed at the time. When Tomari Unit 3 shut down in May 2012, Japan found itself with not one single operating nuclear power plant for the first time in decades. Since that time, only two nuclear units have restarted-Ohi Units 3 and 4 in July 2012. Other plants, rumored to be "next" to start up, have still not started up, although they may soon. The question that springs to mind is naturally, "When will the majority of the plants be allowed to restart?" The more insightful question, though, is, "What will have to be done in order to allow any plant to restart?" And how can we tell which will start first-is there any clue present now? Yes, there is.

The Cassini-Huygens Mission to Saturn

February 20, 2013, 2:57PMANS Nuclear CafeStan Tackett

Cassini-Huygens is a Flagship-class NASA-ESA-ASI robotic spacecraft sent to the Saturn system. It has studied the planet and its many natural satellites since its arrival there in 2004, as well as observing Jupiter and the Heliosphere, and testing the theory of relativity. Launched in 1997 after nearly two decades of gestation, it includes a Saturn orbiter Cassini and an atmospheric probe/lander Huygens that landed in 2005 on the moon Titan. Cassini is the fourth space probe to visit Saturn and the first to enter orbit, and its mission is ongoing as of 2013.  It is powered by a plutonium power source, and has facilitated many landmark scientific discoveries in its mission to the stars.

The 144th Carnival of Nuclear Energy

February 17, 2013, 7:05PMANS Nuclear CafeWill Davis

ANS Nuclear Cafe is very proud to host this week's Carnival of Nuclear Energy.  This weekly feature showcases the best English-language pro-nuclear blogs and articles, and gives a snapshot of what the most experienced and outspoken nuclear advocates feel are the top issues of the times.  This week, as with all of the others, there's plenty of variety in the breadth of topical material.

Responding to System Demand

February 14, 2013, 3:30PMANS Nuclear CafeWill Davis

Significant discussions have occurred recently on various internet venues about "load following"-that is, the capability of a generating source to adjust its power output to match variable demands. There is a myth spreading that nuclear power plants cannot load follow, and today's ever-changing discussion about low-GHG generating sources demands that this myth be dispelled.

Virginia ANS section discovers hidden asset - Clay Condit

February 5, 2013, 1:30PMANS Nuclear CafeRod Adams

On January 31, 2013, about 30 lucky members of the Virginia section of the American Nuclear Society heard a series of informative tales from one of the many innovative pioneers of the First Atomic Age. Clay Condit, a man overflowing with personal memories of important nuclear energy milestones-like the initial start-up of the Submarine Thermal Reactor and the post accident analysis of the SL-1 tragedy-entertained the assembled members for a little more than an hour.