The US Nuclear Regulatory Commission’s Augmented Inspection Team (AIT) held a public information meeting on June 18, 2012 to present findings from their investigation into the cause of the excessive steam generator tube degradation found in units 2 and 3 of the San Onofre Nuclear Generating Station (SONGS). Southern California Edison (SCE), SONGS owner and…
CBS TV 6, one of the television stations closest to the North Anna nuclear power station was allowed to take a tour to see the massive damage caused by one of the largest earthquakes that has ever occurred in the US east of the Mississippi River. Caution – the video you are about to see…
I’ll admit my bias – my father spent his whole career in the business of making electricity. I learned very early in life just how important that job is. Some of the unsung heroes that I have celebrated over the years include the linemen who restored our electricity nearly two weeks after Hurricane Hugo decimated…
Even a broken clock is right twice a day. That is one of the sayings that I remember whenever I read works about energy by people like Amory Lovins or Ralph Nader and find myself agreeing with something they have written. (I rarely agree with either of them, but that does not mean that I…
Shane and Rod discuss boiling water reactors, one of the two types of established light water reactors. There are two main types of light water reactors, pressurized water reactors (PWR) and boiling water reactors (BWR). They share some characteristics, but also have a number of differences. There are plenty of sources of information on the…
Once Rickover’s team selected water as their primary reactor coolant, other material criteria became readily apparent. Though pure water at room temperature is a relatively benign environment, water at high temperatures is quite corrosive. Because radioactive fission products can be dangerous to human health, prudent reactor designers must devise methods to ensure that the fission…
Pressurized water reactors turned out to be extremely stable power producers. Because of the fact that water is used to moderate the energy level of neutrons, making them more effective in causing fission, the concentration of water in the core is an important part of determining the reactivity of the core. Temperature control An increase…
Though water was chosen partially because it was a familiar fluid for power engineers, the choice almost doomed the nuclear submarine program. Laboratory testing of the pumps, bearings, valves, and piping demonstrated to Rickover’s team that the simple, familiar fluid was not so simple at high temperatures and pressures, particularly when exposed to neutron radiation….
When Rickover first began studying nuclear technology, he found a program in severe disarray. The Army’s Manhattan Project had accomplished its mission of completing a workable bomb before the end of the war. Many of the key scientists and engineers had left the program, eager to leave the security restrictions and poor working conditions behind….
The Japanese nuclear ship Mutsu is designed not for show, but for research. She is currently being used by the Japan Atomic Energy Research Institute (JAERI) as a test bed to validate computer models of the behavior of pressurized water reactors in an ocean environment. The Mutsu has a 10,000 shaft horsepower nuclear engine. The…