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New study: Meeting carbon reduction goals economically means no nuclear power

Nuclear Information & Resource Service's avatarGreenWorld

Renewables are not only the environmental answer to climate change, they are the economic answer too. Renewables are not only the environmental answer to climate change, they are the economic answer too.

This is a short piece about a much longer piece that you will want to take a bit of time to read.

Actually, it is unfair to describe it as a “piece.” It’s a study, by Mark Cooper, who for years has been writing extensively about the transition to a clean energy future from an economist’s perspective.

Cooper examines three recent studies taking different approaches to achieving deep decarbonization of our electrical system, two that reject nuclear power as part of the means of attaining massive carbon reductions and one that accepts nuclear power and fossil fuels with carbon capture and storage (CCS) as pieces of the approach. He then lays over that two recent studies of the economics of electricity generation, along with the political structure for attaining carbon reductions established by the…

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February 11, 2016 Posted by | Uncategorized | 1 Comment

Multiple Failures; Dependence Upon External Grid Led to Near-Miss at Scottish Nuclear Power Station

miningawareness's avatarMining Awareness +

Hunterston B sheep and grid streetview
The electrical grid, sheep at Hunterston B – about 30 miles, 50 km, from Glasgow, Scotland.

Dependence upon external sources of power is one of the most bizarre aspects of nuclear power stations. In the event of electrical grid failures, nuclear cooling systems can be powered with backup generators, which sometimes fail to start up. They also require diesel fuel to run. This is a major achilles heel of nuclear power.

As explained by the US NRC: “The reactor’s core contains fuel assemblies that are cooled by water circulated using electrically powered pumps. These pumps and other operating systems in the plant receive their power from the electrical grid. If offsite power is lost, emergency cooling water is supplied by other pumps, which can be powered by onsite diesel generators. Other safety systems, such as the containment cooling system, also need electric power.http://www.nrc.gov/reactors/bwrs.html Hunterston B is CO2…

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February 11, 2016 Posted by | Uncategorized | Leave a comment

February 11 Energy News

#auspol #NuclearCommissionSAust NO #thorium #nuclear

geoharvey's avatargeoharvey

Opinion:

Why Colorado Requested A Pause On The Clean Power Plan, But Isn’t Taking It • Colorado regulators say they will press forward on President Barack Obama’s plan to curtail emissions from coal-fired power plants, despite a temporary pause issued by the U.S. Supreme Court for the Clean Power Plan this week. [Colorado Public Radio]

A coal train enters the Craig Station power plant near Craig, Colo. on Tuesday, June 16, 2015. A coal train enters the Craig Station power plant near Craig, Colo. on Tuesday, June 16, 2015.

Science and Technology:

¶ The Brattle Group study says that the America’s 50 million residential electric water heaters can address bigger challenges such as storing energy from wind farms and solar arrays. The study examined smart technologies focused on water heaters, which use 9% of US household electricity. [Minneapolis Star Tribune]

World:

¶ Solar power project developers in India are expanding the rent-a-roof concept for developing solar systems to sell electricity to large-scale…

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February 11, 2016 Posted by | Uncategorized | Leave a comment

Most Curious Page of President’s Three Mile Island Nuclear Disaster Report: What is Hidden? Will It Be Declassified?

miningawareness's avatarMining Awareness +

The Three Mile Island Nuclear Disaster bears similarity to nuclear “events” which continue to be frequently reported by the US NRC. Thus, it must unfortunately remain “news”.
Report of The President's Commission On the Accident at Three Mile Island (Kemeny et. al. Oct. 1979) , p. 32
Why is page 32 black? Will this blacked out page of the US President’s Three Mile Island Report be declassified? Or has it been declassified elsewhere? What is hidden?

Note that one curie is 37 billion Becquerels. One Becquerel is one radioactive disintegration per second, that is 60 per minute. These are effectively random shots to your cells. Improperly repaired damage may lead to cancer or other genetic mutations, some of which may be transmitted to future generations. They keep discovering that ionizing radiation is worse than often admitted. For those who missed it: https://miningawareness.wordpress.com/2015/12/19/another-look-at-the-recent-low-dose-radiation-exposure-study-inworks/ This recent government funded study suggests that risk is around 15 times worse than BEIR VII (2007) thought, and maybe higher.

Nonetheless, already in 1950, William Russell of…

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February 11, 2016 Posted by | Uncategorized | Leave a comment

Turning off Indian Point And Keeping the Subways Running

roger6t6's avatarEnergy Matters

By Roger Witherspoon

 

          For the past decade, Entergy and supporters have proclaimed that its twin Indian Point reactors are all that keeps the trains running, the street lights on and school buildings operating throughout New York City and neighboring Westchester County.

Entergy, which actually provides about 5 percent of the electricity used in the area, can get away with its misleading advertising for only one more year.  The New York Power Authority, which provides all of the 1,900 megawatts of  electricity used to run the subways, power the street lights, schools, municipal buildings, public housing, LaGuardia and Westchester County airports, is ending its relationship with Indian Point and will get its electricity elsewhere.

After Sept 28, 2013, “we will not be extending the Entergy Contract,” said Paul DiMichelle, NYPA spokesman. “If the contract expired tomorrow we would walk away and purchase the power elsewhere because there is an…

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February 11, 2016 Posted by | Uncategorized | Leave a comment

Sellafield Nuclear Facility Has Fellside Gas Fired Power Station to Cool Spent Nuclear Fuel; “Reprocess” Nuclear Waste

miningawareness's avatarMining Awareness +

Fellside Gas Generating Station near Sellafield
Fellside Gas Station and Sellafield

Sellafield Nuclear Facility, in the UK, has its own gas-fired power station! While this appears mostly for “reprocessing” as well as the cooling of “spent” nuclear fuel (i.e. nuclear waste), operating nuclear reactors are also dependent upon outside sources of power. Thus, the need of nuclear power stations to be connected to the electrical grid.

This dependence upon other sources of power is one of the most bizarre aspects of nuclear power. In the event of electrical grid failures, nuclear cooling systems can be powered with backup generators, which sometimes fail to start up and require diesel fuel to run. This is a major achilles heel of nuclear power.

As explained by the US NRC: “The reactor’s core contains fuel assemblies that are cooled by water circulated using electrically powered pumps. These pumps and other operating systems in the plant receive their power from the electrical grid. If offsite…

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February 11, 2016 Posted by | Uncategorized | Leave a comment

New Biorefinery Process More Effective at Producing Biofuel from Algae – US National Renewable Energy Lab (NREL)

miningawareness's avatarMining Awareness +

Photo by Dennis Schroeder, NREL
NREL Press Release:
Renewable Fuels from Algae Boosted by NREL Refinery Process
February 9, 2016

A new biorefinery process developed by scientists at the Energy Department’s National Renewable Energy Laboratory (NREL) has proven to be significantly more effective at producing ethanol from algae than previous research.

The process, dubbed Combined Algal Processing (CAP), is detailed in a new paper by NREL’s Tao Dong, Eric Knoshaug, Ryan Davis, Lieve Laurens, Stefanie Van Wychen, Philip Pienkos, and Nick Nagle. The paper, “Combined algal processing: A novel integrated biorefinery process to product algal biofuels and bioproducts,”appears in the journal Algal Research.”
Process flow diagrams for Parallel Algal Processing (PAP) and Combined Algal Processing (CAP) (A): PAP and (B): CAP. 2 T. Dong et al. / Algal Research xxx (2016)
http://ac.els-cdn.com/S2211926415301351/1-s2.0-S2211926415301351-main.pdf?_tid=132e6666-d003-11e5-8071-00000aacb360&acdnat=1455114913_6faf0e371b629a94e9dfadd6c0a7cd47

The research follows work previously done at NREL and published in 2014 in The Royal Society of Chemistry’s journal Green Chemistry. In that work, scientists examined two promising algal strains, Chlorella and Scenedesmus, to determine their applicability as biofuel and bioproduct producers. They concluded Scenedesmus performed better in this…

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February 11, 2016 Posted by | Uncategorized | Leave a comment

February 10 Energy News

#auspol #NuclearCommissionSAust NO #thorium #uranium #nuclear

geoharvey's avatargeoharvey

Opinion:

SCOTUS Clean Power Decision NOT Just “A Blow To Obama” • The headline on the Los Angeles Times reads “Supreme Court deals blow to Obama by putting his climate change rules on hold.” This is not “Obama’s plan.” It has been drawn up and legalized for the entire country. It is OUR plan. [CleanTechnica]

Coal Fired Power Plant at Sunset Coal Fired Power Plant at Sunset

Obama’s clean power plan may be on hold, Coal’s fate is not • The US Supreme Court may have put President Barack Obama’s most aggressive plan to curb power-plant emissions on hold, but that’s not going to save coal from a shrinking market, or stop some states and utilities from moving on their own. [Energy Voice]

Science and Technology:

¶ A new study suggests we don’t actually need to store power from the wind and sun. Because the wind is always blowing somewhere…

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February 11, 2016 Posted by | Uncategorized | Leave a comment

Were Nuclear Power Station Piping Problems Fixed at Hunterston B in Scotland? Is it even Possible?

miningawareness's avatarMining Awareness +

In 2012 there was a “Discovery of problems with planned pipework routes during installation of the new nitrogen system tie-ins to the Reactor 3 pressure vessel” at French State owned (EDF) Hunterston B Nuclear Power Station in Scotland. Was this problem ever rectified? All that could be found is the following statement: “the proposed pipe work layout created operational difficulties and EDF NGL decided to complete the connection to the existing system and the tie-ins were duly installed, but postpone full installation pending a new layout design following a return to service.” (UK Office for Nuclear Regulation – see more below). Also, could it be rectified without total reconstruction of this old nuclear power station?

On 3 December 1977 The Times reported that seawater had entered the reactor through a modification of the secondary cooling system. Was the bypass ever repaired? (See more below.)

These photos…

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February 11, 2016 Posted by | Uncategorized | Leave a comment

Japan Nuclear Regulation Authority Halts Fukushima Daiichi’s Ice Wall

water_treatment_performance_3

 

Japanese Nuclear Regulation Authority, the NRA, has put the kibosh on plans by Tokyo Electric Power Co. to start freezing underground soil at the crippled Fukushima No. 1 nuclear power plant–a stunningly expensive project intended to solve the crisis of accumulating radioactive groundwater at the site.
The installation of the equipment required for forming a wall of frozen soil at the Fukushima Daiichi nuclear power plant to prevent groundwater entering the reactor buildings has been completed. Approval from the Japanese regulator must be sought before the creation of the wall itself can begin.
Ice wall technology is already widely used in civil engineering projects, such as the construction of tunnels near waterways. Small-scale tests using the technology have already been completed at the Fukushima Daiichi site. However, the full-scale use of the technology at Fukushima will see the largest ground freezing operation in the world.
Installation of the equipment for forming the ice wall began in June 2014 and a test that has circulated the chilling liquid to specific parts of the wall has been under way since April 2015. The north, south and west sides of the facility were completed last September, while the remaining pipes on the east side facing the sea were placed within the ground in November.
Tokyo Electric Power Company (Tepco) announced yesterday that all the necessary equipment is now in place for the creation of the ice wall. However, the company noted that it must get approval from the Nuclear Regulation Authority before the equipment can be put into operation. The regulator’s approval, Tepco said, would partly depend on the company “showing a method to ensure that the wall (and other groundwater pumping operations) do not invert the water level difference in any way that would cause contaminated water to flow out of the building’s basements”.
Kajima Corporation, the main contractor for the facility, has drilled holes some 30-35 metres into the ground and inserted pipes through which refrigerant will be then be pumped. This cooling will freeze the soil surrounding the pumps creating an impenetrable barrier around the reactor buildings. In total, some 1550 pipes have been placed in the ground to create a 1.5km-long ice wall around units 1 to 4. The wall is designed to remain effective for up to two months in the event of a loss of power. The Japanese government agreed to pay for construction of the ice wall, estimated to cost some JPY32 billion ($278 million).
Reducing the amount of contaminated water that it must deal with is a priority for Tepco. Groundwater naturally seeps from land to sea, but at the Fukushima Daiichi site it must negotiate the basements of reactors buildings. It is thought that more than 400 tonnes of groundwater enters the basements each day through cable and pipe penetrations as well as small cracks, mixing with the heavily contaminated water previously used to cool the damaged reactor cores.
The ice wall is only one part of a multi-layered strategy being employed to manage the flow of groundwater and rainwater at Fukushima Daiichi, Tepco said. Tepco is saying that its strategy to prevent water becoming contaminated has reduced the daily inflow of groundwater into the buildings to 150 tonnes per day. “Successful implementation of the frozen soil water is designed to reduce that inflow further, by keeping water out of the reactor buildings,” the company contends.
TEPCO has maintained that once the soil is frozen, it will form a circular barrier and reduce the flow of groundwater into the reactor buildings; and that, in turn, will prevent water contaminated with radioactive substances from accumulating.
But the Nuclear Regulation Authority contends that contaminated water accumulated in the reactor buildings could leak into the groundwater if the level inside the frozen soil wall drops too much.
TEPCO planned to construct a 1,500-meter-long frozen soil wall around the four reactor buildings by inserting 1,568 pipes to a depth of 30 meters at 1-meter intervals. Each pipe will freeze the soil around it once liquid of minus 30 degrees circulates inside the cylinder.
On Feb. 9, TEPCO completed the last part of the project to install temperature indicators, allowing it to start freezing the soil at a moment’s notice.
Groundwater is continuing to flow into basements of reactor buildings with melted nuclear fuel, adding to the amount of highly contaminated water being produced.
In May 2013, a committee of the Ministry of Economy, Trade and Industry drew up a report on the merits of constructing a frozen soil wall to reduce the volume of contaminated water.
Based on the report, TEPCO started the construction work in June 2014. The government has already spent about 34.5 billion yen ($300 million) on the project.
TEPCO maintained that once the frozen soil wall is completed, it should reduce the flow of groundwater into the reactor buildings from about 400 tons a day to 100 tons in tandem with other measures, including work to pump out groundwater from wells dug around the reactor buildings.
From the outset, the NRA cast doubt on the effectiveness of the frozen soil wall, saying that highly contaminated water accumulated in reactor buildings could leak into the ground if the groundwater level inside the wall drops too much.
The NRA repeatedly asked TEPCO whether the frozen soil wall would prove truly effective in reducing the amount of contaminated water.
“TEPCO is scattering a strange illusion that the problem of contaminated water can be solved completely if a frozen soil wall is constructed,” NRA chairman Shunichi Tanaka said in spring 2015.
In a test operation which started that spring, the reduction of groundwater levels was larger than expected in some places. The speed and direction of the groundwater flow could not be clarified in some locations.
Because it takes two months or so for the soil to thaw out, countermeasures cannot be taken immediately if problems crop up.
TEPCO acknowledges that there are limits to its crystal ball-gazing with regard to the problem of groundwater. However, it contends that it can prevent contaminated water from leaking into the ground by pouring water into the ground through wells if the level drops too much.
In December, the NRA took the rare move of proposing to TEPCO in a written document that the utility operate the frozen soil wall only in places where contaminated water is unlikely to leak into the ground.
However, TEPCO dug in its heels and said it intended to operate the frozen soil wall as a whole. But it also plans to consider the NRA’s proposal.
On Feb. 9, TEPCO President Naomi Hirose visited the NRA office and told Tanaka, “We will consider your proposal and get back to you in a most sincere manner.”

 

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Sources :
http://www.tepco.co.jp/en/press/corp-com/release/2016/1267045_7763.html
http://www.world-nuclear-news.org/RS-Fukushima-Daiichi-ice-wall-equipment-in-place-1002165.html
http://www.japantimes.co.jp/news/2016/02/10/national/tepco-finishes-installing-fukushima-ice-shield-equipment/#.VrvH1lLzN_k
http://ajw.asahi.com/article/0311disaster/fukushima/AJ201602100079

 

February 11, 2016 Posted by | Fukushima 2016 | , | 1 Comment