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German Nuclear Decommissioning and Renewables Build-Out [23Oct11] - 0 views

  • Germany will be redirecting its economy towards renewable energy, because of the political decision to decommission its nuclear plants, triggered by the Fukushima event in Japan and subsequent public opposition to nuclear energy. Germany's decision would make achieving its 2020 CO2 emission reduction targets more difficult.   To achieve the CO2 emissions reduction targets and replace nuclear energy, renewable energy would need to scale up from 17% in 2010 to 57% of total electricity generation of 603 TWh in 2020, according to a study by The Breakthrough Institute. As electricity generation was 603 TWh in 2010, increased energy efficiency measures will be required to flat-line electricity production during the next 9 years.   Germany has 23 nuclear reactors (21.4 GW), 8 are permanently shut down (8.2 GW) and 15 (13.2 GW) will be shut down by 2022. Germany will be adding a net of 5 GW of coal plants, 5 GW of new CCGT plants and 1.4 GW of new biomass plants in future years. The CCGT plants will reduce the shortage of quick-ramping generation capacity for accommodating variable wind and solar energy to the grid.
  • Germany is planning a $14 billion build-out of transmission systems for onshore and future offshore wind energy in northern Germany and for augmented transmission with France for CO2-free hydro and nuclear energy imports to avoid any shortages.    Germany had fallen behind on transmission system construction in the north because of public opposition and is using the nuclear plant shutdown as leverage to reduce public opposition. Not only do people have to look at a multitude of 450-ft tall wind turbines, but also at thousands of 80 to 135 ft high steel structures and wires of the transmission facilities.   The $14 billion is just a minor down payment on the major grid reorganization required due to the decommissioning of the nuclear plants and the widely-dispersed build-outs of renewables. The exisitng grid is mostly large-central-plant based. 
  • This article includes the estimated capital costs of shutting down Germany's nuclear plants, reorganizing the grids of Germany and its neighbors, and building out renewables to replace the nuclear energy.    Germany’s Renewable Energy Act (EEG) in 2000, guarantees investors above-market fees for solar power for 20 years from the point of installation. In 2010, German investments in  renewables was about $41.2 billion, of which about $36.1 billion in 7,400 MW of solar systems ($4,878/kW). In 2010, German incentives for all renewables was about $17.9 billion, of which about half was for solar systems.   The average subsidy in 2010 was about ($9 billion x 1 euro/1.4 $)/12 TWh = 53.6 eurocents/kWh; no wonder solar energy is so popular in Germany. These subsidies are rolled into electric rates as fees or taxes, and will ultimately make Germany less competitive in world markets.   http://thebreakthrough.org/blog//2011/06/analysis_germanys_plan_to_phas-print.html http://mobile.bloomberg.com/news/2011-05-31/merkel-faces-achilles-heel-in-grids-to-unplug-german-nuclear.html http://www.theecologist.org/News/news_analysis/829664/revealed_how_your_country_compares_on_renewable_investment.html http://en.wikipedia.org/wiki/Solar_power_in_Germany  
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  • SUMMARY OF ESTIMATED CAPITAL AND OTHER COSTS   The estimated capital costs and other costs for decommissioning the nuclear plants, restoring the sites, building out renewables, wind and solar energy balancing plants, and reorganizing electric grids over 9 years are summarized below.    The capital cost and subsidy cost for the increased energy efficiency measures was not estimated, but will likely need to be well over $180 billion over 9 years, or $20 billion/yr, or $20 b/($3286 b in 2010) x 100% = 0.6% of GDP, or $250 per person per yr.     Decommission nuclear plants, restore sites: 23 @ $1 billion/plant = $23 billion Wind turbines, offshore: 53,300 MW @ $4,000,000/MW = $213.2 billion   Wind turbines, onshore: 27,900 MW @ $2,000,000/MW = $55.8 billion Wind feed-in tariff extra costs rolled into electric rates over 9 years: $200 billion  Solar systems: 82,000 MW @ $4,500,000/MW = $369 billion Solar feed-in tariff extra costs rolled into electric rates over 9 years = $250 billion. Wind and solar energy balancing plants: 25,000 MW of CCGTs @ $1,250,000/MW = $31.3 billion Reorganizing European elecric grids tied to German grids: $150 billion
  • RENEWABLE ENERGY AND ENERGY EFFICIENCY TARGETS   In September 2010 the German government announced the following targets:   Renewable electricity - 35% by 2020 and 80% by 2050 Renewable energy - 18% by 2020, 30% by 2030, and 60% by 2050 Energy efficiency - Reducing the national electricity consumption 50% below 2008 levels by 2050.  http://en.wikipedia.org/wiki/Renewable_energy_in_Germany   Germany has a target to reduce its nation-wide CO2 emissions from all sources by 40% below 1990 levels by 2020 and 80-85% below 1990 levels by 2050. That goal could be achieved, if 100% of electricity is generated by renewables, according to Mr. Flasbarth. Germany is aiming to convince the rest of Europe to follow its lead.
  • Biomass: At the end of 2010, about 5,200 MW of biomass was installed at a capital cost of about $18 billion. Biomass energy produced was 33.5 TWh, or 5.5% of production. Plans are to add 1,400 MW of biomass plants in future years which, when fully implemented, would produce about 8.6 TWh/yr.   Solar: At the end of 2010, about 17,320 MW of PV solar was installed in Germany at a capital cost of about $100 billion. PV solar energy produced was 12 TWh, or 2% of total production. The excess cost of the feed-in-tariff energy bought by utilities and rolled into the electricity costs of rate payers was about $80 billion during the past 11 years.   Most solar panels are in southern Germany (nation-wide solar CF 0.095). When skies are clear, the solar production peaks at about 7 to 10 GW. Because of insufficient capacity of transmission and quick-ramping gas turbine plants, and because curtailment is not possible, part of the solar energy, produced at a cost to the German economy of about 30 to 50 eurocent/kWh is “sold” at European spot prices of about 5 eurocent/kWh to France which has significant hydro capacity for balancing the variable solar energy. http://theenergycollective.com/willem-post/46142/impact-pv-solar-feed-tariffs-germany  
  • Wind: At the end of 2010, about 27,200 MW of onshore and offshore wind turbines was installed in Germany at a capital cost of about $50 billion. Wind energy produced was 37.5 TWh, or 6.2% of total production. The excess cost of the feed-in-tariff energy bought by utilities and rolled into electricity costs of rate payers was about $50 billion during the past 11 years.   Most wind turbines are in northern Germany. When wind speeds are higher wind curtailment of 15 to 20 percent takes place because of insufficient transmission capacity and quick-ramping gas turbine plants. The onshore wind costs the Germany economy about 12 eurocent/kWh and the offshore wind about 24 eurocent/kWh. The owners of the wind turbines are compensated for lost production.   The alternative to curtailment is to “sell” the energy at European spot prices of about 5 eurocent/kWh to Norway and Sweden which have significant hydro capacity for balancing the variable wind energy; Denmark has been doing it for about 20 years.   As Germany is very marginal for onshore wind energy (nation-wide onshore wind CF 0.167) and nearly all of the best onshore wind sites have been used up, or are off-limits due to noise/visual/environmental impacts, most of the additional wind energy will have to come from OFFSHORE facilities which produce wind energy at about 2 to 3 times the cost of onshore wind energy. http://theenergycollective.com/willem-post/61774/wind-energy-expensive
  • A 2009 study by EUtech, engineering consultants, concluded Germany will not achieve its nation-wide CO2 emissions target; the actual reduction will be less than 30%. The head of Germany's Federal Environment Agency (UBA), Jochen Flasbarth, is calling for the government to improve CO2 reduction programs to achieve targets. http://www.spiegel.de/international/germany/0,1518,644677,00.html   GERMAN RENEWABLE ENERGY TO-DATE   Germany announced it had 17% of its electrical energy from renewables in 2010; it was 6.3% in 2000. The sources were 6.2% wind, 5.5% biomass, 3.2% hydro and 2.0% solar. Electricity consumption in 2010 was 603 TWh (production) - 60 TWh (assumed losses) = 543 TWh http://www.volker-quaschning.de/datserv/ren-Strom-D/index_e.php  
  • Hydro: At the end of 2010, about 4,700 MW of hydro was installed. Hydro energy produced was 19.5 TWh, or 3.2% of production. Hydro growth has been stagnant during the past 20 years. See below website.   As it took about $150 billion of direct investment, plus about $130 billion excess energy cost during the past 11 years to achieve 8.2% of total production from solar and wind energy, and assuming hydro will continue to have little growth, as was the case during the past 20 years (almost all hydro sites have been used up), then nearly all of the renewables growth by 2020 will be mostly from wind, with the remainder from solar and biomass. http://www.renewableenergyworld.com/rea/news/article/2011/03/new-record-for-german-renewable-energy-in-2010??cmpid=WNL-Wednesday-March30-2011   Wind and Solar Energy Depend on Gas: Wind and solar energy is variable and intermittent. This requires quick-ramping gas turbine plants to operate at part-load and quickly ramp up with wind energy ebbs and quickly ramp down with wind energy surges; this happens about 100 to 200 times a day resulting in increased wear and tear. Such operation is very inefficient for gas turbines causing them to use extra fuel/kWh and emit extra CO2/kWh that mostly offset the claimed fuel and CO2 reductions due to wind energy. http://theenergycollective.com/willem-post/64492/wind-energy-reduces-co2-emissions-few-percent  
  • Wind energy is often sold to the public as making a nation energy independent, but Germany will be buying gas mostly from Russia supplied via the newly constructed pipeline under the Baltic Sea from St. Petersburg to Germany, bypassing Poland.   GERMANY WITHOUT NUCLEAR ENERGY   A study performed by The Breakthrough Institute concluded to achieve the 40% CO2 emissions reduction target and the decommissioning of 21,400 MW of nuclear power plants by 2022, Germany’s electrical energy mix would have to change from 60% fossil, 23% nuclear and 17% renewables in 2010 to 43% fossil and 57% renewables by 2020. This will require a build-out of renewables, reorganization of Europe’s electric grids (Europe’s concurrence will be needed) and acceleration of energy efficiency measures.   According to The Breakthrough Institite, Germany would have to reduce its total electricity consumption by about 22% of current 2020 projections AND achieve its target for 35% electricity generated from renewables by 2020. This would require increased energy efficiency measures to effect an average annual decrease of the electricity consumption/GDP ratio of 3.92% per year, significantly greater than the 1.47% per year decrease assumed by the IEA's BAU forecasts which is based on projected German GDP growth and current German efficiency policies.
  • The Breakthrough Institute projections are based on electricity consumption of 544  and 532 TWh  in 2008 and 2020, respectively; the corresponding production is 604 TWh in 2008 and 592 TWh in 2020.   http://thebreakthrough.org/blog//2011/06/analysis_germanys_plan_to_phas-print.html http://www.iea.org/textbase/nppdf/free/2007/germany2007.pdf   Build-out of Wind Energy: If it is assumed the current wind to solar energy ratio is maintained at 3 to 1, the wind energy build-out will be 80% offshore and 20% onshore, and the electricity production will be 592 TWh, then the estimated capital cost of the offshore wind turbines will be [{0.57 (all renewables) - 0.11 (assumed biomass + hydro)} x 592 TWh x 3/4] x 0.8 offshore/(8,760 hr/yr x average CF 0.35) = 0.0533 TW offshore wind turbines @ $4 trillion/TW = $213 billion and of the onshore wind turbines will be [{0.57 (all renewables) - 0.11 (assumed biomass + hydro)} x 592 TWh x 3/4] x 0.2 onshore/(8,760 hr/yr x average CF 0.167) = 0.279 TW of wind turbines @ $2 trillion/TW = $56 billion, for a total of $272 billion. The feed in tariff subsidy for 9 years, if maintained similar to existing subsidies to attract adequate capital, will be about $150 billion offshore + $50 billion onshore, for a total of $200 billion.    
  • Note: The onshore build-out will at least double Germany’s existing onshore wind turbine capacity, plus required transmission systems; i.e., significant niose, environmental and visual impacts over large areas.   Recent studies, based on measured, real-time, 1/4-hour grid operations data sets of the Irish, Colorado and Texas grids, show wind energy does little to reduce CO2 emissions. Such data sets became available during the past 2 to 3 years. Prior studies, based on assumptions, estimates, modeling scenarios, and statistics, etc., significantly overstate CO2 reductions.  http://theenergycollective.com/willem-post/64492/wind-energy-reduces-co2-emissions-few-percent   Build-out of PV Solar Energy: The estimated capital cost of the PV solar capacity will be [{0.57 (all renewables) - 0.11 (assumed biomass + hydro)} x 592 TWh x 1/4]/(8,760 hr/yr x average CF 0.095) = 0.082 TW @ $4.5 trillion/TW = $369 billion. The feed in tariff subsidy, if maintained similar to existing subsidies to attract adequate capital, will be about $250 billion.   Reorganizating Electric Grids: For GW reasons, a self-balancing grid system is needed to minimize CO2 emissions from gas-fired CCGT balancing plants. One way to implement it is to enhance the interconnections of the national grids with European-wide HVDC overlay systems (owning+O&M costs, including transmission losses), and with European-wide selective curtailment of wind energy, and with European-wide demand management and with pumped hydro storage capacity. These measures will reduce, but not eliminate, the need for balancing energy, at greater wind energy penetrations during high-windspeed weather conditions, as frequently occur in Iberia (Spain/Portugal).  
  • European-wide agreement is needed, the capital cost will be in excess of $150 billion and the adverse impacts on quality of life (noise, visuals, psychological), property values and the environment will be significant over large areas.    Other Capital Costs: The capacity of the quick-ramping CCGT balancing plants was estimated at 25,000 MW; their capital cost is about 25,000 MW x $1,250,000/MW = $31.3 billion. The capital costs of decommissioning and restoring the sites of the 23 nuclear plants will be about $23 billion.   Increased Energy Efficiency: Increased energy efficiency would be more attractive than major build-outs of renewables, because it provides the quickest and biggest "bang for the buck", AND it is invisible, AND it does not make noise, AND it has minimal environmental impact, AND it usually reduces at least 3 times the CO2 per invested dollar, AND it usually creates at least 3 times the jobs per invested dollar, AND it usually creates at least 3 times the energy reduction per invested dollar, AND it does all this without public resistance and controversy.   Rebound, i.e., people going back to old habits of wasting energy, is a concept fostered by the PR of proponents of conspicuous consumption who make money on such consumption. People with little money love their cars getting 35-40 mpg, love getting small electric and heating bills. The rebound is mostly among people who do not care about such bills.
  • A MORE RATIONAL APPROACH   Global warming is a given for many decades, because the fast-growing large economies of the non-OECD nations will have energy consumption growth far outpacing the energy consumption growth of the slow-growing economies of the OECD nations, no matter what these OECD nations do regarding reducing CO2 emissions of their economies.   It is best to PREPARE for the inevitable additional GW by requiring people to move away from flood-prone areas (unless these areas are effectively protected, as in the Netherlands), requiring new  houses and other buildings to be constructed to a standard such as the Passivhaus standard* (such buildings stay cool in summer and warm in winter and use 80 to 90 percent less energy than standard buildings), and requiring the use of new cars that get at least 50 mpg, and rearranging the world's societies for minimal energy consumption; making them walking/bicycling-friendly would be a good start.   If a nation, such as the US, does not do this, the (owning + O&M) costs of its economy will become so excessive (rising resource prices, increased damage and disruptions from weather events) that its goods and services will become less competitive and an increasing percentage of its population will not be able to afford a decent living standard in such a society.   For example: In the US, the median annual household income (inflation-adjusted) was $49,445, a decline of 7% since 2000. As the world’s population increases to about 10 billion by 2050, a triage-style rationing of resources will become more prevalent. http://www.usatoday.com/news/nation/story/2011-09-13/census-household-income/50383882/1
  • * A 2-year-old addition to my house is built to near-Passivhaus standards; its heating system consists of a thermostatically-controlled 1 kW electric heater, set at 500 W, that cycles on/off on the coldest days for less than 100 hours/yr. The addition looks inside and out entirely like standard construction. http://theenergycollective.com/willem-post/46652/reducing-energy-use-houses
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    Excellent, lengthy article , lots of data
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BP's Deception in the Gulf : Part 1- The farcical 3 leaks on the broken riser story [10... - 0 views

  • Of all the lies that came out of the Gulf disaster, the most preposterous has been the 3 leaks on the riser story. Figure 165-0a to 165-0c were the first few schematic illustrations of BP’s blowout incident. They were so embarrassingly stupid and logic defying, most experts believed the schematics were deliberately drawn by cartoonists to confuse the average Joe Public. The patchwork of realities resembled a makeshift car hastily assembled from parts of different size vehicles. Obviously a mini car body does not match the oversize truck tires. It is obvious the 5½ inch drill pipe at leak(3) cannot be the same 21inch diameter riser (actually a well casing) at leak(2). Yet the world's technical experts willfully overlooked this fundamental discrepancy and allowed the criminals to get away with murders. And America, the world's greatest nation shouting human rights abuses all over the world, allowed this hideous crime of mass destruction in its own backyard to go unpunished? In China, the corporate criminals responsible for this environmental carnage would have been executed instead of having their lives back. Can the 11 dead crewmen, their young families and thousands of Gulf victims who suffered numerous medical problems from the toxic contaminated Gulf waters and corexit sprayed on them, ever have their lives back?
  • Surely the world's most technologically advanced country could not have been so easily fooled by this “3 wells & 3 leaks on a single riser” fairy tale (concocted Beyond Phantasm). Besides the many controversial circumstances surrounding the sinking of the burning rig (DWH) and the sudden breaking of the super-strong riser in calm water, how could a third open-ended leak (3) be even possible beyond the completely severed riser at the second leak (2)? See fig165-0c. Leak(2) has to be the blown crater of well no.#3 as illustrated in many of our previous articles and irrefutably shown in Figure 165-5 with the right coordinates in the few undoctored videos.
  • “When you have eliminated the impossible, whatever remains, however improbable, must be the truth.” S Homes.
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  • ince June 2010, we have illustrated many physics of impossibilities concocted by BP. Two years later, it seems the world has not awaken from its ignorantly blissful slumber. This disaster is more than just a disastrous mega oil spill. If the world's foremost scientists and investigators cannot figure out the many fundamental flaws in the simple “3 leaks-3 wells” fairy tale, how can there be any hope of ever solving problems beyond kindergarten level? Forget the carbon tax, the ban on hazardous gas emission and just about any anti-pollution measures designed to improve the global environment. All these schemes have sinister undertones with profiting on mass miseries of others.
  • In the Gulf disaster, you have the biggest environmental polluter in human history. The punishment for a crime of mass destruction that could have been averted, was just a slap on the wrist? If this is not the clearest proof of corruption at the highest level and biggest HSE (health, safety & environment) farce, then what is?
  • It was not the failure of safety regulations but the enforcement of regulations. The government admitted this much by sacking MMS's director and changing it to BOEMRE. It was not the failure of technology but the devious use of technology to cloak unfair business practices or safety farce at the very least. But would shrewd corporate criminals risk billions of investment dollars just to skimp on some daily operation expenses and safety devices? Just like the fairy tale of the 3 leaks, this was just the red herring. The oil industry will start on its decline just as the coal industry did, after its replacement by alternative cheaper and cleaner energy sources (The Future of Free Energy).
  • Giant global oil corporations may not have the next 10 years to recover their mega billion dollar investments. With the writings on the wall and their failures to control (prevent) the advent of free energy, the oil oligarchs had to devise emergency exit schemes before oil independence becomes public knowledge. High crude oil prices cannot be manipulated too high or long enough to recoup their billions of investment dollars globally. They risk becoming economic dinosaurs.
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    Lengthy article with lots of visuals, only partially annotated so read the entire article at the site
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Impacts of the Fukushima Nuclear Power Plants on Marine Radioactivity - Environmental S... - 0 views

  • The impacts on the ocean of releases of radionuclides from the Fukushima Dai-ichi nuclear power plants remain unclear. However, information has been made public regarding the concentrations of radioactive isotopes of iodine and cesium in ocean water near the discharge point. These data allow us to draw some basic conclusions about the relative levels of radionuclides released which can be compared to prior ocean studies and be used to address dose consequences as discussed by Garnier-Laplace et al. in this journal.(1) The data show peak ocean discharges in early April, one month after the earthquake and a factor of 1000 decrease in the month following. Interestingly, the concentrations through the end of July remain higher than expected implying continued releases from the reactors or other contaminated sources, such as groundwater or coastal sediments. By July, levels of 137Cs are still more than 10 000 times higher than levels measured in 2010 in the coastal waters off Japan. Although some radionuclides are significantly elevated, dose calculations suggest minimal impact on marine biota or humans due to direct exposure in surrounding ocean waters, though considerations for biological uptake and consumption of seafood are discussed and further study is warranted.
  • there was no large explosive release of core reactor material, so most of the isotopes reported to have spread thus far via atmospheric fallout are primarily the radioactive gases plus fission products such as cesium, which are volatilized at the high temperatures in the reactor core, or during explosions and fires. However, some nonvolatile activation products and fuel rod materials may have been released when the corrosive brines and acidic waters used to cool the reactors interacted with the ruptured fuel rods, carrying radioactive materials into the ground and ocean. The full magnitude of the release has not been well documented, nor is there data on many of the possible isotopes released, but we do have significant information on the concentration of several isotopes of Cs and I in the ocean near the release point which have been publically available since shortly after the accident started.
  • We present a comparison of selected data made publicly available from a Japanese company and agencies and compare these to prior published radionuclide concentrations in the oceans. The primary sources included TEPCO (Tokyo Electric Power Company), which reported data in regular press releases(3) and are compiled here (Supporting Information Table S1). These TEPCO data were obtained by initially sampling 500 mL surface ocean water from shore and direct counting on high-purity germanium gamma detectors for 15 min at laboratories at the Fukushima Dai-ni NPPs. They reported initially results for 131I (t1/2 = 8.02 days), 134Cs (t1/2 = 2.065 years) and 137Cs (t1/2 = 30.07 years). Data from MEXT (Ministry of Education, Culture, Sports, Science and Technology—Japan) were also released on a public Web site(4) and are based on similar direct counting methods. In general MEXT data were obtained by sampling 2000 mL seawater and direct counting on high-purity germanium gamma detectors for 1 h in a 2 L Marinelli beaker at laboratories in the Japan Atomic Energy Agency. The detection limit of 137Cs measurements are about 20 000 Bq m–3 for TEPCO data and 10 000 Bq m–3 for MEXT data, respectively. These measurements were conducted based on a guideline described by MEXT.(5) Both sources are considered reliable given the common activity ratios and prior studies and expertise evident by several Japanese groups involved in making these measurements. The purpose of these early monitoring activities was out of concern for immediate health effects, and thus were often reported relative to statutory limits adopted by Japanese authorities, and thus not in concentration units (reported as scaling factors above “normal”). Here we convert values from both sources to radionuclide activity units common to prior ocean studies of fallout in the ocean (Bq m–3) for ease of comparison to previously published data.
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  • We focus on the most complete time-series records from the north and south discharge channels at the Dai-ichi NPPs, and two sites to the south that were not considered sources, namely the north Discharge channels at the Dai-ni NPPs about 10 km to the south and Iwasawa beach which is 16 km south of the Dai-ichi NPPs (Figure 1). The levels at the discharge point are exceedingly high, with a peak 137Cs 68 million Bq m–3 on April 6 (Figure 2). What are significant are not just the elevated concentrations, but the timing of peak release approximately one month after to the earthquake. This delayed release is presumably due to the complicated pattern of discharge of seawater and fresh water used to cool the reactors and spent fuel rods, interactions with groundwater, and intentional and unintentional releases of mixed radioactive material from the reactor facility.
  • the concentrations of Cs in sediments and biota near the NPPs may be quite large, and will continue to remain so for at least 30–100 years due to the longer half-life of 137Cs which is still detected in marine and lake sediments from 1960s fallout sources.
  • If the source at Fukushima had stopped abruptly and ocean mixing processes continued at the same rates, one would have expected that the 137Cs activities would have decreased an additional factor of 1000 from May to June but that was not observed. The break in slope in early May implies that a steady, albeit lower, source of 137Cs continues to discharge to the oceans at least through the end of July at this site. With reports of highly contaminated cooling waters at the NPPs and complete melt through of at least one of the reactors, this is not surprising. As we have no reason to expect a change in mixing rates of the ocean which would also impact this dilution rate, this change in slope of 137Cs in early May is clear evidence that the Dai-ichi NPPs remain a significant source of contamination to the coastal waters off Japan. There is currently no data that allow us to distinguish between several possible sources of continued releases, but these most likely include some combination of direct releases from the reactors or storage tanks, or indirect releases from groundwater beneath the reactors or coastal sediments, both of which are likely contaminated from the period of maximum releases
  • It is prudent to point out though what is meant by “significant” to both ocean waters and marine biota. With respect to prior concentrations in the waters off Japan, all of these values are elevated many orders of magnitude. 137Cs has been tracked quite extensively off Japan since the peak weapons testing fallout years in the early 1960s.(13) Levels in the region east of Japan have decreased from a few 10s of Bq m–3 in 1960 to 1.5 Bq m–3 on average in 2010 (Figure 2; second x-axis). The decrease in 137Cs over this 50 year record reflects both radioactive decay of 137Cs with a 30 year half-life and continued mixing in the global ocean of 137Cs to depth. These data are characteristic of other global water masses.(14) Typical ocean surface 137Cs activities range from <1 Bq m–3 in surface waters in the Southern Hemisphere, which are lower due to lower weapons testing inputs south of the equator, to >10–100 Bq m–3 in the Irish Sea, North Sea, Black Sea, and Baltic Seas, which are elevated due to local sources from the intentional discharges at the nuclear fuel reprocessing facilities at Sellafield in the UK and Cape de la Hague in France, as well as residual 137Cs from Chernobyl in the Baltic and Black Seas. Clearly then on this scale of significance, levels of 137Cs 30 km off Japan were some 3–4 orders of magnitude higher than existed prior to the NPP accidents at Fukushima.
  • Finally though, while the Dai-ichi NPP releases must be considered “significant” relative to prior sources off Japan, we should not assume that dose effects on humans or marine biota are necessarily harmful or even will be measurable. Garnier-Laplace et al.(1) report a dose reconstruction signal for the most impacted areas to wildlife on land and in the ocean. Like this study, they are relying on reported activities to calculate forest biota concentrations,
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    From Wood's Hole, note that calculations are based on reports from TEPCO & other Japanese agencies. Quite a bit more to read on the site.
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TEPCO doesn't know where melted fuel is at in reactors or actual level of radioactive p... - 0 views

  • Fukushima Reactors Status of Reactors Reactor No. 1 Reactor No. 2 Reactor No. 3 Spent Fuel Pools Spent Fuel Pool No. 1 Spent Fuel Pool No. 2 Spent Fuel Pool No. 3 Spent Fuel Pool No. 4 Common Spent Fuel Pool Radiation Releases Plutonium Uranium Chernobyl Comparisons Criticality Japan Tokyo Area Outside Tokyo U.S. & Canada West Coast California Los Angeles San Francisco Bay Area Hawaii Seattle Canada Midwest East Coast Florida US Nuclear Facilities Pacific Radiation Facts Internal Emitters Health Children Testing Food Water Air Rain Soil Milk Longterm Strange Coverups? Video Home Terms About Contact     Cooling system for reactors and spent fuel pools stopped working three times over 16-day period at Alabama nuke plant » NHK: TEPCO doesn’t know where melted fuel is at in reactors or actual level of radioactive particles still being released — About to start checking July 29th, 2011 at 06:43 AM POSITION: relative; BORDER-BOTTOM-STYLE: none; PADDING-BOTTOM: 0px; BORDER-RIGHT-STYLE: none; MARGIN: 0px; PADDING-LEFT: 0px; WIDTH: 336px; PADDING-RIGHT: 0px; DISPLAY: inline-table; BORDER-TOP-STYLE: none; HEIGHT: 280px; VISIBILITY: visible; BORDER
  • The operator of the Fukushima Daiichi nuclear power plant says it will extract air from troubled reactors at the plant to measure the amount of radioactive substances. [...] The operation is intended to obtain accurate data on what kind of radioactive substances are being released and in what quantity. The air extraction is expected to begin later on Friday for the No.1 reactor and in early August for the No.2 unit. No plans have been decided for the No.3 reactor due to high radiation levels in part of its building.
  • that TEPCO doesn’t know where the melted fuel is or the actual level of radioactive particles still being released: TEPCO hopes the findings may also help the company grasp the extent of leakage of nuclear fuels into the containment vessels. Up to around one billion becquerels of radioactive substances arebelieved to be released every hour from reactors No.1, 2 and 3. It isnot known how accurate this figure is because it was worked out bytaking readings of the air on the plant’s premises.
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Skyrocketing new reactor construction costs that just toppled Calvert Cliffs ... - 0 views

  • NIRS, Public Citizen, South Carolina Sierra Club, and former NRC Commissioner Peter Bradford have warned in a press release that the same forces -- skyrocketing new reactor construction costs, decreased demand for electricity, competition from renewables and efficiency, low natural gas prices, etc. -- which just undermined the Calvert Cliffs 3 new reactor proposal in Maryland are also battering away at the new reactor proposals in Texas (South Texas Project Units 3 and 4) and South Carolina (V.C. Summer Units 2 and 3). Calvert Cliffs, South Texas Project, and Summer were the top three federal nuclear loan guarantee finalists after Vogtle Units 3 and 4 in Georgia, which the Obama administration awarded a conditional $8.3 billion taxpayer-backed loan guarantee last February. The audio recording of the full press conference is also posted online.
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Nuclear generation rise in 2010 [15Jun11] - 0 views

  • The total amount of electricity generated by nuclear powers plants around the world increased in 2010 following three consecutive years of decline. However, a sharp drop in output is foreseen for 2011 as a result of the Fukushima accident.    Global nuclear electricity generation in 2010 totalled 2630 TWh, according to figures from the International Atomic Energy Agency (IAEA), representing a 2.8% increase from the 2558 TWh generated in 2009 and taking it close to a peak value in 2006. The energy availability factor of the plants operating in 2010 was 81%, up from 79.4% in 2009.
  • New reactors amounting to 3722 MWe net boosted the 2010 figure, including Russia's Rostov 2, India's Rajasthan 6, China's Ling Ao 3 and Qinshan II-3, and South Korea's Shin Kori 1.   Just one small reactor - France's 130 MWe Phenix prototype fast reactor - was officially shut down in 2010, although the unit actually ceased power generation in 2009.
  • Construction of 16 new reactors, with a combined capacity of 15,846 MWe net, started in 2010, according to the IAEA. Ten of these are in China (Ningde units 3 and 4, Taishan 2, Changjiang 1 and 2, Haiyang 2, Fangchenggang 1 and 2, Yangjiang 3 and Fuqing 3). In Russia, the construction of two new units also began (Leningrad II unit 2 and Rostov 4), while two more started construction in India (Kakrapar 3 and 4). In Brazil, work also started on building the Angra 3 unit. Meanwhile, the stalled construction of Japan's 1383 MWe Ohma unit also got back underway in 2010 after re-engineering work for enhanced earthquake protection.
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  • Assuming about five years for construction it can be expected that reactors will be coming online around 2012 at double today's rate of five per year, with this to rise to one per month around 2015.
  • Fukushima impact
  • Despite a return to form for nuclear power in 2010, the impact of the Fukushima accident, not only in Japan but around the world, will significantly reduce the amount of electricity generated by nuclear power plants in 2011.
  • According to data released by the Japan Atomic Industry Forum (JAIF), only 17 of Japan's 54 nuclear power reactors were in operation in mid-May. They represented around 15,500 MWe, or 31%, of the country's total nuclear generating capacity.
D'coda Dcoda

Nuclear Expert Discusses 'Melt-Through' at NRC Meeting: I believe melted nuclear core l... - 0 views

  • Fukushima & Japan Tokyo Area Outside Tokyo Fukushima Reactors Status of Reactors Reactor No. 1 Reactor No. 2 Reactor No. 3 Spent Fuel Pools Spent Fuel Pool No. 1 Spent Fuel Pool No. 2 Spent Fuel Pool No. 3 Spent Fuel Pool No. 4 Common Spent Fuel Pool Radiation Releases Plutonium Uranium Longterm Chernobyl Comparisons Criticality US & Canada West Coast California Los Angeles San Francisco Bay Area Hawaii Seattle Canada Midwest East Coast Florida US Nuclear Facilities North Anna (VA) Calvert Cliffs (MD) World Europe France UK Germany Chernobyl Rest of Europe South America Russia Asia China South Korea Taiwan Rest of Asia Pacific Maps & Forecasts Radiation Maps Radiation Forecasts Rad. Facts Internal Emitters Health Testing Food Water Air Rain Soil Milk Strange Coverups? Children Video Home page_
D'coda Dcoda

Scientists Radically Raise Estimates of Fukushima Fallout [25Oct11] - 0 views

  • The disaster at the Fukushima Daiichi nuclear plant in March released far more radiation than the Japanese government has claimed. So concludes a study1 that combines radioactivity data from across the globe to estimate the scale and fate of emissions from the shattered plant. The study also suggests that, contrary to government claims, pools used to store spent nuclear fuel played a significant part in the release of the long-lived environmental contaminant caesium-137, which could have been prevented by prompt action. The analysis has been posted online for open peer review by the journal Atmospheric Chemistry and Physics.
  • Andreas Stohl, an atmospheric scientist with the Norwegian Institute for Air Research in Kjeller, who led the research, believes that the analysis is the most comprehensive effort yet to understand how much radiation was released from Fukushima Daiichi. "It's a very valuable contribution," says Lars-Erik De Geer, an atmospheric modeller with the Swedish Defense Research Agency in Stockholm, who was not involved with the study. The reconstruction relies on data from dozens of radiation monitoring stations in Japan and around the world. Many are part of a global network to watch for tests of nuclear weapons that is run by the Comprehensive Nuclear-Test-Ban Treaty Organization in Vienna. The scientists added data from independent stations in Canada, Japan and Europe, and then combined those with large European and American caches of global meteorological data.
  • Stohl cautions that the resulting model is far from perfect. Measurements were scarce in the immediate aftermath of the Fukushima accident, and some monitoring posts were too contaminated by radioactivity to provide reliable data. More importantly, exactly what happened inside the reactors — a crucial part of understanding what they emitted — remains a mystery that may never be solved. "If you look at the estimates for Chernobyl, you still have a large uncertainty 25 years later," says Stohl. Nevertheless, the study provides a sweeping view of the accident. "They really took a global view and used all the data available," says De Geer.
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  • Challenging numbers Japanese investigators had already developed a detailed timeline of events following the 11 March earthquake that precipitated the disaster. Hours after the quake rocked the six reactors at Fukushima Daiichi, the tsunami arrived, knocking out crucial diesel back-up generators designed to cool the reactors in an emergency. Within days, the three reactors operating at the time of the accident overheated and released hydrogen gas, leading to massive explosions. Radioactive fuel recently removed from a fourth reactor was being held in a storage pool at the time of the quake, and on 14 March the pool overheated, possibly sparking fires in the building over the next few days.
  • But accounting for the radiation that came from the plants has proved much harder than reconstructing this chain of events. The latest report from the Japanese government, published in June, says that the plant released 1.5 × 1016 bequerels of caesium-137, an isotope with a 30-year half-life that is responsible for most of the long-term contamination from the plant2. A far larger amount of xenon-133, 1.1 × 1019 Bq, was released, according to official government estimates.
  • Stohl believes that the discrepancy between the team's results and those of the Japanese government can be partly explained by the larger data set used. Japanese estimates rely primarily on data from monitoring posts inside Japan3, which never recorded the large quantities of radioactivity that blew out over the Pacific Ocean, and eventually reached North America and Europe. "Taking account of the radiation that has drifted out to the Pacific is essential for getting a real picture of the size and character of the accident," says Tomoya Yamauchi, a radiation physicist at Kobe University who has been measuring radioisotope contamination in soil around Fukushima. Click for full imageStohl adds that he is sympathetic to the Japanese teams responsible for the official estimate. "They wanted to get something out quickly," he says. The differences between the two studies may seem large, notes Yukio Hayakawa, a volcanologist at Gunma University who has also modelled the accident, but uncertainties in the models mean that the estimates are actually quite similar.
  • The new study challenges those numbers. On the basis of its reconstructions, the team claims that the accident released around 1.7 × 1019 Bq of xenon-133, greater than the estimated total radioactive release of 1.4 × 1019 Bq from Chernobyl. The fact that three reactors exploded in the Fukushima accident accounts for the huge xenon tally, says De Geer. Xenon-133 does not pose serious health risks because it is not absorbed by the body or the environment. Caesium-137 fallout, however, is a much greater concern because it will linger in the environment for decades. The new model shows that Fukushima released 3.5 × 1016 Bq caesium-137, roughly twice the official government figure, and half the release from Chernobyl. The higher number is obviously worrying, says De Geer, although ongoing ground surveys are the only way to truly establish the public-health risk.
  • The new analysis also claims that the spent fuel being stored in the unit 4 pool emitted copious quantities of caesium-137. Japanese officials have maintained that virtually no radioactivity leaked from the pool. Yet Stohl's model clearly shows that dousing the pool with water caused the plant's caesium-137 emissions to drop markedly (see 'Radiation crisis'). The finding implies that much of the fallout could have been prevented by flooding the pool earlier. The Japanese authorities continue to maintain that the spent fuel was not a significant source of contamination, because the pool itself did not seem to suffer major damage. "I think the release from unit 4 is not important," says Masamichi Chino, a scientist with the Japanese Atomic Energy Authority in Ibaraki, who helped to develop the Japanese official estimate. But De Geer says the new analysis implicating the fuel pool "looks convincing".
  • The latest analysis also presents evidence that xenon-133 began to vent from Fukushima Daiichi immediately after the quake, and before the tsunami swamped the area. This implies that even without the devastating flood, the earthquake alone was sufficient to cause damage at the plant.

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    The Japanese government's report has already acknowledged that the shaking at Fukushima Daiichi exceeded the plant's design specifications. Anti-nuclear activists have long been concerned that the government has failed to adequately address geological hazards when licensing nuclear plants (see Nature 448, 392–393; 2007), and the whiff of xenon could prompt a major rethink of reactor safety assessments, says Yamauchi.

  • The model also shows that the accident could easily have had a much more devastating impact on the people of Tokyo. In the first days after the accident the wind was blowing out to sea, but on the afternoon of 14 March it turned back towards shore, bringing clouds of radioactive caesium-137 over a huge swathe of the country (see 'Radioisotope reconstruction'). Where precipitation fell, along the country's central mountain ranges and to the northwest of the plant, higher levels of radioactivity were later recorded in the soil; thankfully, the capital and other densely populated areas had dry weather. "There was a period when quite a high concentration went over Tokyo, but it didn't rain," says Stohl. "It could have been much worse." 
D'coda Dcoda

U.S. to restart construction of nuclear reactors [28Nov11] - 0 views

  • After 34 years, the United States is expected to resume construction of nuclear reactors by the end of the year, and Toshiba will export turbine equipment for the reactors to the U.S. early next month, it was learned Saturday. According to sources, construction will begin by year-end on the Nos. 3 and 4 reactors of the Alvin W. Vogtle Electric Generating Plant in Georgia Georgia Country Georgia /ˈdʒɔrdʒə/ (Georgian: საქართველო, sak’art’velo IPA: [sɑkʰɑrtʰvɛlɔ] ( listen)) is a sovereign state in the Caucasus region of Eurasia. Located at the crossroads of Western Asia and Eastern E... View full Dossier Latest news and the Nos. 2 and 3 reactors of the Virgil C. Summer Nuclear Generating Station in South Carolina South Carolina U.S. state South Carolina /ˌsaʊθ kærəˈlaɪnə/ is a state in the Deep South of the United States that borders Georgia to the south, North Carolina to the north, and the Atlantic Ocean to the east. Originally pa... View full Dossier Latest news .
  • The U.S. Nuclear Regulatory Commission Nuclear Regulatory Commission Government Agency (United States of America) The Nuclear Regulatory Commission (NRC) is an independent agency of the United States government that was established by the Energy Reorganization Act of 1974 from the United States Atomic Energy C... View full Dossier Latest news is expected to shortly approve the construction and operation of the reactors, which have been designed by Westinghouse, a subsidiary of Toshiba. The decision to resume construction of reactors is expected to pave the way for Japan Japan Country Japan /dʒəˈpæn/ (Japanese: 日本 Nihon or Nippon; formally 日本国  Nippon-koku or Nihon-koku, literally, the State of Japan) is an island nation in East Asia. Located in the Pacific Ocean, it lies to the... View full Dossier Latest news to export related equipment to the United States, observers said.
  • The reactors to be constructed are of the AP1000 type
D'coda Dcoda

Mag: Curium and plutonium outside Fukushima plant indicate nuclear explosion at Reactor... - 0 views

  • Translation of the Dec. 15, 2011 Nature Magazine article by former Prime Minister Yukio Hatoyama and legislator Tomoyuki Taira — both members of  by EX-SKF (Certain expressions may be off, as article was translated English to Japanese and then back to English) [Emphasis Added]: [Subheading:] Possibility of Nuclear Explosion We need to answer the question of what caused the series of explosions at Fukushima I Nuclear Power Plant. Initially, they were reported as hydrogen explosions [...] [T]his is not conclusive. Other possibilities exist, and they are nuclear explosions and gas explosions other than hydrogen gas. [...]
  • From two observed facts, we believe a nuclear explosion is more likely. First, several transuranic elements have been detected several tens of kilometers away from the plant. Second, the steel trusses in the upper part of the reactor building of Reactor 3 are twisted as if they had been melted.
  • According to the reports by the Ministry of Education and Science, curium-242 (242Cm) has been detected at a location 3 kilometers from the plant, and plutonium-238 (238Pu) has been detected at a location 45 kilometers from the plant. [...] 242Cm’s half life is short (about 163 days), and the deposition of 238Pu around the plant is far greater than normal, leading the Ministry of Education and Science to conclude these were emitted from Fukushima I Nuclear Power Plant. If that’s the case, pieces of broken spent nuclear fuel rods may have been scattered around the plant, and it is extremely dangerous.
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  • These transuranic elements are not carried by the radioactive plume like much lighter cesium or iodine. Therefore, they must have been blown out by an extremely large force. [...] It is unlikely that a hydrogen explosion generated a high enough temperature that would melt steel
  • TEPCO initially announced that there was a white smoke from Reactor 3 explosion. However, the later investigation has revealed that the smoke was black, and a hydrogen explosion is not considered to generate such a black smoke. Our conclusion therefore is that it [explosion of Reactor 3] may have been a nuclear explosion.
D'coda Dcoda

Over EPA limit: Cesium levels in San Francisco area milk now higher than 6 months ago [... - 0 views

  • Title: UCB Milk Sampling Results Source: University of California Berkeley Department of Nuclear Engineering Date: 1/14/2012 (9:40am)
  • By integrating all of the milk data we have collected since March 11, we can estimate the total effective dose equivalent (TEDE) one could have received from exposure to fission product isotopes in milk to date. For someone drinking milk at the relatively high rate of one gallon per week, the TEDE could be nearly 1 microsievert, or the total effective dose equivalent for only 12 minutes on an airplane flight or 3.7 hours of the average person’s background exposure from natural sources of radiation.
  • Pasteurized, Homogenized Milk from the San Francisco Bay Area with Best By Date of 12/29/2011 Cs-134: 0.068 Becquerels/liter (Bq/l) ±0.011 [MDA=0.044] Cs-137: 0.075 Bq/l ±0.015 [MDA=0.052] Total cesium is .143 Bq/l, or 3.87 picocuries/l (pCi/l) (1 Bq = 27.1 pCi). The EPA Maximum Contaminant Level for radioactive cesium in milk is 3 pCi/l:
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  • “EPA lumps these gamma and beta emitters together under one collective MCL [Maximum Contaminant Level], so if you’re seeing cesium-137 in your milk or water, the MCL is 3.0 picocuries per liter; if you’re seeing iodine-131, the MCL is 3.0; if you’re seeing cesium-137 and iodine-131, the MCL is still 3.0.” -Forbes.com Current levels are about 40% higher than what was detected 6 months ago: Pasteurized, Homogenized Milk from the San Francisco Bay Area with Best By Date of 8/22/2011
D'coda Dcoda

L-3 MAPPS Attains Major Milestone on Ling Ao Phase II Simulator Project [20Jul11] - 0 views

  • L-3 MAPPS announced today that the Ling Ao Phase II nuclear power plant full scope simulator (FSS), the first-ever simulator for a CPR1000 plant, has attained another significant milestone. In a ceremony held in Paris on 28 June 2011 marking the issuance of the provisional acceptance certificate (PAC), L-3 MAPPS joined AREVA, Siemens, Daya Bay Nuclear Power Operations and Management Company (DNMC) and China Nuclear Power Engineering Company (CNPEC) to formally hand over the simulator to DNMC on behalf of the Ling Dong Nuclear Power Company
  • In cooperation with AREVA and Siemens, L-3 MAPPS successfully delivered and installed the FSS in August 2009. The first plant license operator examinations were successfully carried out on the FSS and witnessed in January 2010 by China's nuclear regulatory authority, the National Nuclear Safety Administration. Unit 1 of the Ling Ao Phase II complex entered commercial operation in September 2010 and Unit 2 is planned for August 2011
  • To achieve PAC, the simulator was updated to account for all plant changes since the August 2009 simulator delivery, including commercial operation results. A simulator availability test was performed, which demonstrated a simulator availability of 99.42 percent. With this milestone achieved, the simulator’s warranty period is now underway.
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  • “With the plant and digital control systems (DCS) designs being firmed up in parallel with the simulator’s development, the supplier and customer teams faced tremendous hurdles to complete this project,” said Peter Dawson, president of L-3 MAPPS. “We are extremely proud of what the team has accomplished on the Ling Ao Phase II program and are grateful to so many contributors, including representatives from DNMC, CNPEC, AREVA and Siemens for their outstanding collaboration.” 
  • Integrated with AREVA- and Siemens-supplied DCSs, replica control room panels, and a stimulated human-machine interface, the FSS features L-3 MAPPS’ advanced instructor station capabilities and a proven Windows-based graphical simulation environment. Advanced plant models have been deployed and validated for the reactor, thermal-hydraulic, balance of plant, electrical, and I&C for the turbine control and other miscellaneous systems not controlled by the AREVA/Siemens DCSs. The safety systems DCS is AREVA’s Teleperm XS, and the operational I&C DCS system is Siemens’ SPPA-T2000 with OM690 human-machine interface. 
D'coda Dcoda

TEPCO may use 'shower spray' on troubled reactor [05Aug11] - 0 views

  • Tokyo Electric Power Co. is considering changing the method of injecting water into the No. 3 reactor at its hobbled Fukushima No. 1 nuclear power plant as the current system isn't cutting it. The No. 3 reactor is consuming nearly three times the coolant water that the No. 1 and No. 2 reactors are taking to cool down their fuel rods, as a considerable amount is missing the target. TEPCO said that the pressure vessels in the No. 1 through No. 3 reactors, where fuel meltdowns have occurred, currently have temperatures at the bottom between about 90 and 120 degrees. In the meantime, the amount of water pumped in daily to maintain the temperatures at these levels is about 216 tons for the No. 3 reactor, as opposed to 84 tons for the No. 2 reactor, which is about the same size and contains roughly the same number of fuel rods, and 91 tons for the No. 1 reactor, which is smaller.
  • The question is, why is this discrepancy occurring? TEPCO said that in all three reactors, coolant water is being injected from outside the shroud, a major component covering the core. Analysis conducted so far has hinted at the possibility that, unlike in the No. 1 and No. 2 reactors, part of the melted fuel in the No. 3 reactor did not fall through to the bottom of the pressure vessel but has stayed on the grid-like core support plate. The current injection method cannot pump water into there, resulting in inefficient cooling and increasing the amount of radioactive water. The new water injection method under consideration is based on the use of an emergency cooling system called a "core spray." It can pour water down like a shower above the fuel rods, resulting in more efficient cooling and the use of less coolant water, TEPCO said. Much has been learned about the state of the cooling pipe systems since workers regained access to the reactor buildings. On Aug. 3, TEPCO conducted tests on the operability of valves along the piping.
  • We plan to make decisions in two or three weeks," a TEPCO official said.
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Newly Released TEPCO Data Proves Fairewinds Assertions of Significant Fuel Pool Failure... - 0 views

shared by D'coda Dcoda on 28 Aug 11 - No Cached
  •  
    Video - New TEPCO data measured on August 19 & 20 shows severe damage to the spent fuel in Fukushima Daiichi Units 1, 2, and 3. The adjacent TEPCO table posted on the front page shows incredibly high levels of Cesium 137 and Cesium 134 in all three spent fuel pools of Units 1, 2, & 3. This TEPCO data clearly contradicts and refutes the July assertion by the NRC the Fukushima Daiichi spent fuel pools were not damaged in this tragic accident. Crytome (cry to me) has a new high resolution photo, also uploaded, that shows the extensive damage of the Unit 3 spent fuel pool and the reactor building.
D'coda Dcoda

University of Tokyo and Japan Atomic Energy Agency Support POTRBLOG Analysis On Fukushi... - 0 views

  • On May 4th 2011 the Potrblog team described the Fukushima 3 explosion and spent fuel rod ejections as the result of spent fuel cooling water becoming supersaturated with hydrogen
  • "It is also likely that the water in the fuel cooling pond was supersaturated with hydrogen. When the explosion occurred, the hydrogen in solution in the cooling pond water would have frothed up, burned, and deflagrated, sending the fuel rods out of the top of the holding pond. Visualize a bottle of Coke dropping; the resultant the carbon dioxide coming out of solution and shooting out of the end; now instead of carbon dioxide picture it as burning hydrogen shooting out"
  • Empirical lab research by the University of Tokyo and the Japanese Atomic Energy Agency now confirms the generation of hydrogen in such fuel pools. They attribute the explosion in Fukushima 4 to hydrogen generated in fuel pools. The POTRBLOG team suspects that unlike Fukushima 3, the Fukushima 4 explosion did not manifest a large BLACK mushroom cloud because the Fukushima 4 explosion triggered before the fuel pools could become supersaturated with Hydrogen and Oxygen.This early triggering, as compared to Fukushima 3, would have limited damage to the roof line of the Fukushima 4 building. For POTRBLOG's full analysis on the Unit 3 explosion see:Was the Fukushima Daiichi #3 EXPLOSION a detonation or deflagration?
D'coda Dcoda

#Fukushima I Nuke Plant Reactor 3: Humans Entered Reactor Bldg and Did What Bots Coulnd... - 0 views

  • 6 TEPCO employees and 4 TEPCO affiliate company employees went to the reactor building of the Reactor 3 on July 8 afternoon. 2 TEPCO employees entered the building, measured the radiation at the location where the nitrogen injection hose would be installed (55 millisieverts/hour), and put a temporary coupler on the metal pipe that would be used for nitrogen injection.For that 9-minute job, they received 5.34 millisieverts radiation.Here's TEPCO's handout for the press on July 9. The English explanation reads like a Google translation (maybe it is) but you get the idea. (I looked at the Japanese handout.)
  • TEPCO seems to be in a great hurry to start the nitrogen injection into the Containment Vessel of the Reactor 3. At first I thought it was just a window-dressing effort for the national government who had decided, on some inexplicable reason or unreason, it would be safe enough for people to come back to their homes in the planned evacuation zone as long as the nitrogen gas was pumped into the Reactor 3 Containment Vessel, just so that the government could tell the citizens "See what we've done for you? It's now so much safer you can go back!"Or, the Reactor 3 is actually in danger of blowing up in a hydrogen explosion.They have hardly done any work on other reactors. The Reactor 1's basement water, last seen as gushing out 4 sieverts/hour steam through to the 1st floor, hasn't been touched. That water doesn't even go to the water treatment system. I haven't heard any news of TEPCO sampling the water for analysis. There's hardly any news on the Reactor 2, after they opened the double door and supposedly drove out the radioactive materials and moisture inside. They still don't know the water level (if any) inside the Reactor 2's Pressure Vessel, because the pressure gauge and water gauge don't work. As for the Reactor 4, they've been injecting water into the Reactor well and the equipment pool from the bottom of the Reactor Pressure Vessel, which seems peculiar. Other than that, and the photo of a hot-spring-like Spent Fuel Pool on the 5th floor, there's not much information coming out.
  •  
    see article for amount of radiation they received
D'coda Dcoda

What do you do with the waste? - Kirk Sorensen's answers [13Oct11] - 0 views

  • What do you do with the waste? – Kirk Sorensen’s answers by Rod Adams on October 13, 2011 in Fuel Recycling , Nuclear Batteries , Nuclear Waste , Plutonium , Thorium Share3   Gordon McDowell, the film maker who produced Thorium Remix , has released some additional mixes of material gathered for that production effort. One in particular is aimed at those people whose main concern about using nuclear energy is the often repeated question “What do you do with the waste.” Many people who ask that question think that it is a trump card that should end all conversation and let them win the hand. I used to play bridge and enjoyed it when I could “no trump” a smug contestant who thought he had a winner. Kirk’s discussion below is one example of how that can be done in the nuclear energy field . My friends who like the Integral Fast Reactor have another answer . I am pretty certain there are dozens of other good answers to the question – the primary obstacle to implementing them comes from the nefarious forces that LIKE raising (artificial) barriers to the use of nuclear energy. On another note, I want to point to a story published in the evening of October 12, 2011 on the Wall Street Journal web site titled WSJ: Fluor Buys Stake In Reactor Maker NuScale Energy . I am happy to see that NuScale has found a suitable, deep pockets investor with a lot of nuclear plant engineering and construction experience. One more short note. Jay Hancock, a writer for the Baltimore Sun, has taken note of some of the work published on Atomic Insights regarding Exelon’s decision to destroy the Zion Nuclear power station rather than allowing it to compete against existing power plants to increase the supply and decrease the price of electricity. On October 8, 2011, Hancock published a column titled State should pull plug on Constellation-Exelon deal that explored whether or not it would be beneficial for Marylanders to allow a company like Exelon to own a dominant number of electrical power generation facilities in the state. One of the pieces of evidence that has convinced Hancock to oppose the proposed merger is the way that Exelon has acted with regard to the Zion nuclear station. He recognizes that the company has adequately demonstrated a history of using market power to drive up prices and profits at the expense of customer interests. Additional reading related to Exelon bear hug attempt: EDF Asks Maryland Regulators To Block Exelon-Constellation Merger
  • What do you do with the waste? – Kirk Sorensen’s answers by Rod Adams on October 13, 2011 in Fuel Recycling, Nuclear Batteries, Nuclear Waste, Plutonium, Thorium Share3  Gordon McDowell, the film maker who produced Thorium Remix , has released some additional mixes of material gathered for that production effort. One in particular is aimed at those people whose main concern about using nuclear energy is the often repeated question “What do you do with the waste.” Many people who ask that question think that it is a trump card that should end all conversation and let them win the hand. I used to play bridge and enjoyed it when I could “no trump” a smug contestant who thought he had a winner. Kirk’s discussion below is one example of how that can be done in the nuclear energy field . My friends who like the Integral Fast Reactor have another answer. I am pretty certain there are dozens of other good answers to the question – the primary obstacle to implementing them comes from the nefarious forces that LIKE raising (artificial) barriers to the use of nuclear energy. On another note, I want to point to a story published in the evening of October 12, 2011 on the Wall Street Journal web site titled WSJ: Fluor Buys Stake In Reactor Maker NuScale Energy. I am happy to see that NuScale has found a suitable, deep pockets investor with a lot of nuclear plant engineering and construction experience. One more short note. Jay Hancock, a writer for the Baltimore Sun, has taken note of some of the work published on Atomic Insights regarding Exelon’s decision to destroy the Zion Nuclear power station rather than allowing it to compete against existing power plants to increase the supply and decrease the price of electricity. On October 8, 2011, Hancock published a column titled State should pull plug on Constellation-Exelon deal that explored whether or not it would be beneficial for Marylanders to allow a company like Exelon to own a dominant number of electrical power generation facilities in the state.
  • Gordon McDowell, the film maker who produced Thorium Remix, has released some additional mixes of material gathered for that production effort. One in particular is aimed at those people whose main concern about using nuclear energy is the often repeated question “What do you do with the waste.” Many people who ask that question think that it is a trump card that should end all conversation and let them win the hand. I used to play bridge and enjoyed it when I could “no trump” a smug contestant who thought he had a winner. Kirk’s discussion below is one example of how that can be done in the nuclear energy field
Jan Wyllie

The Disastrous Status Of Fukushima Daiich - 0 views

shared by Jan Wyllie on 08 Dec 12 - No Cached
  • Workers can't work in Buildings 1, 2 and 3 because the radiation is too intense. Steel is corroding from saltwater, threatening pipes and pumps which cool the remains of three destroyed reactors. Radiation is crumbling concrete onto dust. Zirconium cladding is so corroded from seawater that it is doubtful that SFP 1, 2, 3 and 4 can ever be emptied. Corium under Building 4 has cracked the foundation and the building is sinking unevenly. Ground water contacting corium in the mudrock below Buildings1, 2 and 3 becomes highly contaminated, and flows directly into the Pacific Ocean, killing the Pacific Seafood Industry. Hawaii milk is so comtaminated that farmers are feeding boron to their cows. Two US cities on RadiationNetwork.com right now measure over 60cpm of radiation in the air. TEPCO seems to have lost track of the corium from 3 nuclear plants. And then there are the two earthquakes of 6.2 and 7.3 which hit just offshore since midnight...
D'coda Dcoda

Aerosolized plutonium from Fukushima has been detected in Europe. [27Dec11] - 0 views

  • Abstract Source: J Environ Radioact. 2011 Dec 27. Epub 2011 Dec 27. PMID: 22206700
  • Article Affiliation: Environmental Research Department, SRI Center for Physical Sciences and Technology, Savanoriu 231, 02300 Vilnius, Lithuania.
  • Analyses of (131)I, (137)Cs and (134)Cs in airborne aerosols were carried out in daily samples in Vilnius, Lithuania after the Fukushima accident during the period of March-April, 2011. The activity concentrations of (131)I and (137)Cs ranged from 12 μBq/m(3) and 1.4 μBq/m(3) to 3700 μBq/m(3) and 1040 μBq/m(3), respectively. The activity concentration of (239,240)Pu in one aerosol sample collected from 23 March to 15 April, 2011 was found to be 44.5 nBq/m(3). The two maxima found in radionuclide concentrations were related to complicated long-range air mass transport from Japan across the Pacific, the North America and the Atlantic Ocean to Central Europe as indicated by modelling. HYSPLIT backward trajectories and meteorological data were applied for interpretation of activity variations of measured radionuclides observed at the site of investigation. (7)Be and (212)Pb activity concentrations and their ratios were used as tracers of vertical transport of air masses. Fukushima data were compared with the data obtained during the Chernobyl accident and in the post Chernobyl period. The activity concentrations of (131)I and (137)Cs were found to be by 4 orders of magnitude lower as compared to the Chernobyl accident. The activity ratio of (134)Cs/(137)Cs was around 1 with small variations only. The activity ratio of (238)Pu/(239,240)Pu in the aerosol sample was 1.2, indicating a presence of the spent fuel of different origin than that of the Chernobyl accident.
D'coda Dcoda

Radionuclides from the Fukushima accident... [J Environ Radioact. 2011] - PubMed - NCBI... - 0 views

  • AbstractAnalyses of (131)I, (137)Cs and (134)Cs in airborne aerosols were carried out in daily samples in Vilnius, Lithuania after the Fukushima accident during the period of March-April, 2011. The activity concentrations of (131)I and (137)Cs ranged from 12 μBq/m(3) and 1.4 μBq/m(3) to 3700 μBq/m(3) and 1040 μBq/m(3), respectively. The activity concentration of (239,240)Pu in one aerosol sample collected from 23 March to 15 April, 2011 was found to be 44.5 nBq/m(3). The two maxima found in radionuclide concentrations were related to complicated long-range air mass transport from Japan across the Pacific, the North America and the Atlantic Ocean to Central Europe as indicated by modelling. HYSPLIT backward trajectories and meteorological data were applied for interpretation of activity variations of measured radionuclides observed at the site of investigation. (7)Be and (212)Pb activity concentrations and their ratios were used as tracers of vertical transport of air masses. Fukushima data were compared with the data obtained during the Chernobyl accident and in the post Chernobyl period. The activity concentrations of (131)I and (137)Cs were found to be by 4 orders of magnitude lower as compared to the Chernobyl accident. The activity ratio of (134)Cs/(137)Cs was around 1 with small variations only. The activity ratio of (238)Pu/(239,240)Pu in the aerosol sample was 1.2, indicating a presence of the spent fuel of different origin than that of the Chernobyl accident.
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