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Comment Re:Maybe Musk reads the news... (Score 1) 260

So, gas is trading around $4/MMBTU and you get about 175 kWh of electricity from that $4 with a good combined cycle gas plant. So, the fuel cost is about 2.5 cents per kWh, about the same as delivered wind power. For a peaker plant, competing with solar, the fuel cost would be over 5 cents per kWh. That is just the fuel cost. So, why pay more?

Comment Controversy and Ignorance (Score 2) 770

In a lot of ways, consensus in science is what is lacking in both controversy and ignorance. It is what goes into text books. If a subject is controversial then some people know somethings about it but the details have not been worked out and agreed upon. If a subject has had no study, for example is there DNA under the ice on Europa? Then that is a subject of ignorance and perhaps speculation but not subject to consensus.

So consensus forms on topics that feel like they have pretty much been studied to death. It should be noted though that contrarians may remain active even when a consensus exists. That may look like controversy, but really the contrarian's arguments have all been addressed to everyone's satisfaction except the contrarian's. So, basically, the contrarian is the guy who does not get it. The faster a field moves, the more likely a contrarian will still be professionally active.

Submission + - Lyndon Johnson's 'Daisy' ad, which changed the world of politics, turns 50 (cnn.com)

mdsolar writes: A little girl, no taller than the weeds that surround her, stands in a field and picks petals from a delicate daisy. She quietly counts each one.

Suddenly an ominous voice can be heard counting down from 10. She looks up as the camera zooms in on her face, all the way into her iris. And then the unthinkable happens: A mushroom cloud.

Sunday marked the 50th anniversary of the famous "Daisy" ad run by Lyndon B. Johnson's 1964 presidential campaign. The aim of the one-minute spot, widely known as the first political attack ad, was to frame Republican Barry Goldwater as a warmonger.

"No one had attacked anyone like that before," said Robert Mann, a Louisiana State University professor who literally wrote the book about the Daisy ad. "It was a pretty strong, implicit charge — that my opponent is a reckless cowboy who will destroy your children in a nuclear holocaust."

Submission + - Disused nuclear barge to be scrapped in Galveston (yourhoustonnews.com)

mdsolar writes: A World War II-era Liberty ship converted to a barge-mounted nuclear reactor will be towed from Virginia to Galveston to be scrapped.

The U.S. Army Corps of Engineers plans to have a public hearing Tuesday in Galveston to detail the plan for the scrapping of the USS Sturgis.

Galveston was chosen for the scrapping because of its proximity to facilities that accept the sort of low-level radioactive waste and other toxic, discarded material to be removed from the ship, said Hans Honerlah, a Corps of Engineers program manager and health physicist.

Towing the ship to Galveston to be broken up is safer than removing the waste at its present berth at Joint Base Langley-Eustis in the James River of Virginia, he said.

“The higher risk is trucking, followed by rail. Towing it here (to Galveston) is safer than having a lot of trucks traveling across the country,” Honerlah told the Galveston County Daily News

According to the Corps of Engineers, the Sturgis was outfitted with a nuclear reactor to generate electric power for military and civilian operations in the Panama Canal Zone in the 1960s. The reactor was shut down in 1976, the fuel was removed and it was mothballed in 1978.

Submission + - Aging Nuclear Reactors May Close in Japan (scientificamerican.com)

mdsolar writes: Japan will push nuclear operators to draft plans to scrap a quarter of the country's 48 reactors, which are either too old or too costly to upgrade to meet new standards imposed after the Fukushima disaster, the Nikkei reported on Friday.

The government is betting that by forcing older units considered more vulnerable to disaster to shut down it may gain public support to restart newer units, the Nikkei reported.

All reactors in Japan have been shut down after the 2011 nuclear crisis at Fukushima caused by a major earthquake and tsunami.

Public opinion turned against nuclear power after the disaster, but the governments wants to restart units deemed safe by a new more independent regulator and cut Japan's reliance on expensive imports of fossil fuels.

Comment Overhead (Score 2) 203

NASA, for example, does not allow grant funding to be used to write grants. So, this preliminary data thing sounds like a different model. Where did the money come from to obtain the preliminary data? With regard to NASA, grants can cover administrative overhead. And, most institutions have support for new grant writing efforts. Doubtless, some NASA grant money that goes to overhead ends up providing support for that kind of effort so new grants do get written. It is just murky.

In any case, all that work to find out if an idea is technically feasible enough to make a good grant proposal gets paid for somehow to persuade peers that a proposal is viable. So, really, the originality of new grant proposals has something to do with how well faculty are supported in exploring new ideas. That would seem to be the place to ensure that peer reviews get to see exciting and not just competent proposals. Are the institutions hiring the most creative postdocs, for example? Are junior faculty getting good seed money? Is there time set aside for use of laboratories for pursuit of hunches? So, if granting institutions want to see more creative proposals, they'll have to look at the institutional culture grant overhead supports.

Submission + - More than twice as much mercury in environment as thought (sciencemag.org)

sciencehabit writes: The most comprehensive estimate of mercury released into the environment is putting a new spotlight on the potent neurotoxin. By accounting for mercury in consumer products, such as thermostats, and released by industrial processes, the calculations more than double previous tallies of the amount of mercury that has entered the environment since 1850. The analysis also reveals a previously unknown spike in mercury emissions during the 1970s, caused largely by the use of mercury in latex paint.

Comment Re:This actually makes sense (Score 1) 258

I suspect that a slow subcritcal accelerator catalyzed reactor can be used for this and other transuranics. The subsequent fission products may in some cases be handled in the same reactor, in some cases using laser transmutation, and is some cases may be targeted with tritium to try to get past a low single neutron cross section.

Submission + - Dangerous sodium reactor spent fuel dissolved at Savannah River Site (augusta.com)

mdsolar writes: Dangerously corroded spent nuclear fuel stored at Savannah River Site has been dissolved after a federal report indicated it needed immediate processing.

The fuel was from the Sodium Reactor Experiment, which launched in California in the 1950s to determine whether nuclear power could provide household electricity. The sodium-cooled reactor made history in 1957 by powering homes, and two years later, it became the first U.S. reactor to experience a meltdown.

Savannah River Nuclear Solutions, the site’s management and operations contractor, dissolved 147 bundles of the fuel stored in the L-Area Disassembly Basin. The work took about two years to complete.

It was processed at the H-Canyon facility, the nation’s only operating hardened nuclear chemical separations plant where certain types of plutonium, highly-enriched uranium and aluminum-clad spent fuel can be processed for disposal.

The sodium reactor material was prepared for disposition in the late 1970s and then shipped to SRS. The fuel was made of a thorium-uranium alloy that made it unsuitable for use in fabricating fuel for nuclear energy power plants such as the Tennessee Valley Authority.

In 2011, the Sodium Reactor Experiment material was singled out by a federal oversight panel as needing urgent attention. The Defense Nuclear Facilities Safety Board warned that at least three of the 36 cans of material had ruptured from corrosion; and that uranium fuel in one can was so corroded that it left 36 kilos of oxide sludge at the bottom, according to The Augusta Chronicle archives.

The fuel was dissolved with other high-aluminum fuel from L-Area. The solution will be transferred to the Defense Waste Processing Facility at SRS where it will be mixed with glass and “vitrified” before permanently sealed in steel canisters.

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