Archive for » February, 2012 «

Green Blog: The Nuclear Ups and Downs of 2011

Green: Politics

The Nuclear Regulatory Commission speckled a few problems during American reactors final year and destined plant owners to repair them before they could means accidents, though it also let a lot of problems slip and unsuccessful to follow adult when there were indications of deeper troubles. That’s a end of a examination of chief plant reserve in 2011 by David Lochbaum, an consultant during a Union of Concerned Scientists, a organisation that is generally vicious of a industry.

Union of Concerned Scientists

Mr. Lochbaum also wrote that some plants do not accommodate a commission’s standards for fires and earthquakes. The group has postulated some plants exemptions from some glow requirements, giving them swap ways of complying nonetheless it recently systematic all plants to re-evaluate their trembler preparedness.

The elect pronounced it was reviewing a news though forked out that it was mostly a outline of information published by a agency. “There is zero new in this report,’’ pronounced David McIntyre, a elect spokesman.

Mr. Lochbaum, who once worked for a elect as an instructor assisting to sight inspectors, is one of a many technically worldly open critics of chief power. Among a positives he summarized for 2011:

  • After a Three Mile Island collision in 1979, Duke Power, that operates a identical form of reactors, commissioned additional apparatus in a containment buildings during a Oconee plants in Greenville, S.C. But in an accident, a heat inside a containment buildings could get prohibited adequate to close down a electrical components of a puncture system, a news noted. The elect found a scarcity and systematic it corrected before it caused a problem.
  • At a LaSalle plant, southwest of Chicago, plant operators frequently kept a storage tank three-quarters full. But elect inspectors remarkable that a trembler research for a plant insincere that a tank was empty; if it had H2O in it and was heavier, it competence fall in an earthquake. Again, a elect research identified a accountability before it caused a problem.
  • Among a negatives:

  • At a Millstone 2 plant in Waterford, Conn., control room operators done errors while using a test, causing a reactor’s energy turn to boost rapidly.
  • During a periodic exam of a glow sprinkler complement during a Monticello plant nearby Minneapolis, decay blocked a upsurge of H2O past a valve. “The plant owner
    had not scrupulously evaluated countless warnings about gnawing inside glow protection,” a news said.
  • None of a missteps resulted in any injuries or a recover of radiation. But Mr. Lochbaum pronounced that tellurian blunder played a poignant purpose and that a commission’s reserve truth relies on operators to do a right thing in an puncture “If a operators can't travel and gnaw gum, what certainty is there they can be coming to run and juggle,’’ he said.

    The list of problems is something like a Rorschach ink-blot exam in that a stress is in a eye of a beholder. Mr. Lochbaum characterized a incidents as “near misses.”

    But Mr. McIntyre of a elect said, “The N.R.C.’s slip module is designed to locate and scold problems good before they turn anything coming a ‘near miss.’ “

    Green Blog: Energy Field’s Long Shots Show Off Their Stuff

    Makani PowerMakani’s airborne breeze turbine is tethered to a belligerent with a wire and flies quick in circles. Each propeller creates about 7.5 kilowatts of appetite that flows behind down a wire to a earth.Green: Science

    ARPA-E, a Energy Department’s module for betting on long-shot technologies, is holding a gathering in Washington this week, and several dozen teams operative on surprising ideas showed adult to associate with intensity investors and intensity supervision customers. None of a technologies are prepared for a market, though that is as it should be, pronounced Arun Mujamdar, a program’s director.

    The idea is that a technologies should “swing for a fences,” he said. Most will not strech commercialization, module officials say. In fact, some have already failed and returned unspent sovereign income to a government.

    Yet some uncover engaging progress. Makani Power of Alameda, Calif., had a many manifest one, a mockup of a drifting breeze turbine. The device, that is done of black CO fiber and looks a bit like a secrecy drone, is a wing with 4 propellers, a skinny fuselage and a tail with a rudder and an elevator, a same dual aspect control surfaces that an aeroplane has.

    But a Makani bird does not fly from place to place. It is tethered to a belligerent with a cable, and it flies in circles in a trail like a outdoor hole of a Ferris wheel. While a flitting breeze competence be usually 10 or 15 miles an hour, a Makani device is encircling during speeds of about 100 miles an hour as a propellers are incited by a wind. That creates it probable for a device to beget electricity during breeze speeds that are too low for typical turbines to furnish much.

    Each propeller creates about 7.5 kilowatts of appetite that flows behind down a wire to a earth.

    The antecedent flies in a round about 165 feet in diameter, with a core about 655 feet in a air. In that sense, it follows a trail a bit like a tips of a required breeze turbine, nonetheless it is ostensible to be distant cheaper to build.

    To take off, a appurtenance draws appetite from a grid and uses a blades as propellers; once it is operating, it switches to sketch appetite from a flitting wind. Makani’s Web site shows a device holding off from dry land, though Corwin Hardham, a company’s arch executive, pronounced that a improved plcae competence be a ocean, where winds are stronger and it would not need a tower, a dear underline of offshore breeze machines. “All it needs is a buoy,” he said.

    Makani perceived a $3 million ARPA-E grant.

    Some of a exhibitors during a gathering did not win grants though are still anticipating to do so. Cefco Global Clean Energy, for example, was display off a comparatively energy-efficient routine of scrubbing a pollutants and CO dioxide out of a flue gases from incinerators, concrete kilns or appetite plants.

    The routine involves zapping a unwashed gases in a cover with a supersonic startle call that neatly raises their heat and injecting a chemical into a cover to connect with a pollutant. The Energy Department has used a record to constraint pieces of hot cesium during a arch rubbish incinerator, pronounced Robert E. Tang, Cefco’s boss and arch executive, and a Army has used it to constraint chemicals that are not consumed when it incinerates haughtiness gas canisters.

    The technique also works on some-more walking pollutants like oxides of sulfur and nitrogen, that are large problems during spark plants. And it can be used to spin CO dioxide into a plain bicarbonate.

    Another exhibitor was Agrivida, that perceived $4.6 million for an bid to grow crops with an peculiar organisation of genes that assistance giveaway a sugars in that a plant stores energy. When a plant is exhilarated and placed in an alkaline solution, these genes means it to hide enzymes that mangle down some of a structure so that a sugars upsurge out. The sugars can afterwards be converted into ethanol or hydrocarbons for use as car fuel.

    When we visited a company during a Medford, Mass., laboratory in May 2010, it was experimenting with scores of seedlings. Recently it has begun delivering “gram quantities” of sorghum, switchgrass and corn to business for processing, and subsequent year it hopes to be delivering biomass by a kilo, pronounced David Agneta, a clamp president.

    The corn is of seductiveness not only for a kernels though also for a stems, leaves and other immature parts, he said.

    Agrivida has lifted some income in a private marketplace and will be looking for other sources of funds, Mr. Agneta added.

    Green Blog: Alliance Seeks Vast Marine Reserves in Antarctic

    Antarctic Ocean AllianceAn environmental bloc wants 19 zones in a segment to benefit protection.Green: Politics

    On another sea front:

    Frustrated with a gait of a United Nations organisation charged with safeguarding Antarctic waters, a bloc of environmental groups announced a possess beginning on Tuesday, calling for a creation of what would be a world’s largest network of sea pot in a Southern Ocean.

    The Antarctic Ocean Alliance, that includes environmental and charge organizations like Greenpeace, WWF, and a International Fund for Animal Welfare and a American oceanographer Sylvia Earle, is proposing that 19 areas be set aside as sea stable areas or no-take zones where fishing and vegetable inspection are prohibited.

    Many fisheries scientists disagree that such pot offer a best wish for restoring ecosystems stressed by overfishing, wickedness and tellurian warming. United Nations members assembly in Nagoya, Japan, concluded in Oct 2010 to set aside 10 percent of a world’s oceans as pot by 2020 underneath a Convention on Biological Diversity, a aim that all determine stays distant.

    The physique charged with overseeing a Southern Ocean habitat, a Commission for a Conservation of Antarctic Marine Living Resources, is formulation to plead proposals from a United States and New Zealand for a origination of some pot when it meets in late Oct in Hobart, Tasmania.

    But a fondness argues that a commission, that does not concede a news media to cover a meetings and firmly controls entrance by environmental groups, will constantly tumble brief of what is indispensable but incomparable open scrutiny.

    Antarctic waters, that comment for about 10 percent of a world’s oceans, are home to 10,000 class including penguins, seals and whales, according to a alliance.

    James N. Barnes, executive executive of a Antarctic and Southern Ocean Coalition, pronounced that scientists were deeply uneasy by a enlargement of a Antarctic toothfish attention in a Ross Sea, mostly by New Zealand fishermen. The toothfish, mostly marketed as Chilean sea bass, is a slow-growing peak predator cherished for a flesh.

    ‘‘To this day, they don’t know a many simple things about these fish,’’ Mr. Barnes said. A sepulchral fishery for krill, one of a bedrocks of a ecosystem, is also a concern, he said.

    Under a precautionary element built into a Antarctic commission’s charter, environmentalists argue, fishing should be curtailed in a deficiency of adequate batch assessments.

    The due network of sea reserves, travelling 1.39 million block miles, would be some-more than twice a distance of Alaska and a initial step toward a origination of a incomparable network to strengthen a Southern Ocean. Currently, a Chagos Islands sea stable area in a Indian Ocean, during 210,000 block miles, is a world’s largest such zone.

    ‘‘The waters of Antarctica have turn appealing for industrial scale fishing since fish tighten to where people live unequivocally don’t exist in vast numbers anymore,’’ Dr. Earle pronounced in a matter announcing a initiative. ‘‘We know we have a problem. We now need to do something about it.’’

    Green Blog: On Our Radar: Fracking Dispute in Pennsylvania

    At slightest dual gas wells nearby a Pennsylvania village where residents reported discolored celebration H2O developed problems with their concrete casing during a drilling process, state group annals show. The drilling company, Rex Energy, says that a problems were corrected and no groundwater was infested in a fracking process. [Associated Press]

    A sovereign decider throws out a category movement lawsuit brought by a consortium of farmers opposite Monsanto over a rural patents, observant that a farmers were not spoiled by a association and are creation in “a pure bid to emanate a debate where nothing exists.” [Diner's Journal blog]

    Fruit bats in Guatemala are hosting a novel subtype of influenza A virus, scientists have discovered. The subsequent step is to request a geographical placement of influenza, a initial step toward last either bats are a fountainhead behind outbreaks in humans. [Nature]

    A video combined by Al Gore’s Climate Reality Project casts climate-skeptic curriculums in a sinister light. [YouTube]

    straw scoop off-grid home – corner architects

    This distinguished high dried home, designed by Taos, NM’s Edge Architects, is singly matched for a widely vacillating meridian conditions of a furious desert  location. The home is designed to be totally off-grid and self-sufficient. For cooling and heating purposes, a home’s north, easterly and west walls include of 24 in. thick adobe wrapped in straw bales.

    Photovoltaic panels yield all electricity for lights, computers, television, H2O pumps, soaking machine, etc. The home’s solar row array is situated for limit solar bearing while progressing a vicinity to a application room, where a bank of batteries stores a electricity, and an inverter translates a 24 volt DC electricity to required 110-volt AC power.

    All a residence’s roofs slope to a singular plcae so that sleet H2O can be prisoner and stored in dual 1,700 gallon cisterns buried on a north side of a house. The usually faith on an outward source of energy is a propane tank, that provides fuel for a operation and prohibited H2O heater.

    The density and combination of a walls make them delayed to feverishness adult during a day, gripping interior temperatures sincerely gentle and consistent while extraneous temperatures vacillate wildly. Temperatures can strech 90 degrees during a day (with aloft temperatures available on west confronting walls) dropping to a 50s during night. In a afternoon, a owners can open a skylight during a tip of a round stairway/cooling building to fast empty any prohibited atmosphere that has built adult in a house. Once a object goes down, a cooling cycle starts again and a residents can open windows during night to additionally cold down a house.

    On a cold side — winter temperatures can plunge to 17 degrees next 0 during night followed by balmy days in a 20s. During a day a sun, low in a sky, is authorised to strech low into a house, heating a petrify building and adobe walls. The walls store a feverishness until a residence starts to cold down in a dusk as extraneous temps drop. The owners tighten insulating shades to reason feverishness in and emanate additional feverishness around a woodstove.

    gothic_vault_2_.jpg2ndfl_strawbale_landing_2_.jpg

    Green building details:

    • A rainwater roof catchment complement provides all domestic H2O supply, including celebration water
    • 4_strawbaleKitchen_2_.jpg

    • A greywater re-use systems allows rubbish H2O to be channeled to outside planters
    • An energy-saving on-demand heater provides prohibited water
    • Cellulose roof insulation
    • Energy fit appliances throughout
    • Flooring in a upstairs bureau is bamboo
    • Douglas Fir beams and columns used both in interior roof framing and extraneous portals were locally harvested
    • Sensors were placed in a walls during construction so we were means to lane a heat changes within a walls via a finish cycle of seasons
    • Concrete countertops enclose recycled potion aggregate
    • Walls are hand-troweled, tradition plasters that implement chopped straw and mica dirt to revoke cracking

    related: some-more eco-friendly design on The Alternative Consumer

    Green Blog: Preserving a World’s Reefs Through Photography

    Catlin Seaview SurveyA demo picture of a diving site off a seashore of Australia from a Catlin Seaview Survey.Green: Science

    The SVII camera is formally squidlike. It moves during a resting dual and a half miles an hour by vital corridors and rusted shipwrecks of a Coral Sea off Australia, gnawing 360-degree photos each 4 to 6 seconds.

    This camera, during a sequence of a four-way partnership called a Catlin Seaview Survey, will visually request a combination and a health of a Great Barrier Reef along a full 1,500-mile span.

    Sponsored by a Catlin Group, a tellurian word company, a consult is dictated not usually to accumulate information though also to strengthen systematic bargain of how meridian change competence impact sea ecosystems like a Great Barrier Reef. The mapping is to start in September.

    Researchers wish that a stunning visuals will “bridge a opening between systematic believe and open awareness,” Ove Hoegh-Guldberg, executive of a Global Change Institute during a University of Queensland and a project’s arch scientist, pronounced in a media release.

    The SVII camera.Catlin Seaview SurveyThe SVII camera.

    Although coral reefs bay some-more than 25 percent of all famous fish class and a biggest biodiversity of any sea ecosystem, their health has been in steep decline given a 1980s, when scientists initial beheld widespread splotch from thermal stress.

    Scientists are anxiously available a effects – roughly confidently inauspicious – of meridian change on temperature-sensitive corals, a small animals during a heart of a reefs. Increasing sea astringency from abounding windy CO dioxide is approaching to devalue environmental vigour on reefs.

    Beyond shoal waters, a consult will use diving robots to try reefs during a abyss of roughly 100 to 225 feet, where small investigate has been conducted.

    The plan will use satellite tags to lane a roving function of 50 sea fauna, including immature turtles and manta rays, that are both listed as threatened class by a International Union for a Conservation of Nature.

    Alongside a Catlin Group and a University of Queensland, a nonprofit called Underwater Earth and Google are partners in a survey. Through a Google Earth and Maps platforms, Google has offering to yield giveaway open entrance to an expected 50,000 breathtaking images, that will concentration on 20 sites along a reef.

    “Millions of people will be means to knowledge a life, a scholarship and a sorcery that exists underneath a aspect of a oceans,” Dr. Hoegh-Guldberg pronounced in announcing a plan this month during a World Oceans Summit in Singapore. He pronounced a consult would “reveal to a open one of a final frontiers on Earth.”

    Electric Vehicles and Pollution – are a dual some-more synonymous than we competence think?

    With gasoline prices now on a rise, a recognition of electric travel will continue to arise as well. While electric vehicles do assuage problems both during a siphon and with a environment, there’s some-more to cruise when looking during a whole cycle of wickedness than usually a emissions from a vehicle’s tailpipe; China is a concentration of a new investigate that sheds some light on this issue.

    A National Science Foundation saved investigate from a University of Tennessee shows that electric vehicles in China are charged by electrical grid sources churned with about 90% coal, that according to Assistant Professor Chris Cherry, creates electric vehicles “more damaging to open health per kilometer trafficked in China than required vehicles.� The investigate also adds a disclaimer that China is not a standard plcae to use as a indication for a rest of a universe since in China electric vehicles outnumber required vehicles 2:1. In China, a health hazards of being unprotected to wickedness from electricity generating appetite plants is distant larger than in many places in a United States, though doesn’t intermix a fact that appetite plants in a U.S. might still be theme to identical problems in a future.

    In a United States, a investigate showed an normal spark appetite brew in appetite plants to be around 43% (down from 55% over a past 8 years). The U.S. now has adequate purify appetite sources to appetite over 100 million electric vehicles, and this series will continue to arise in a future; as Cherry points out, “electric vehicles are appealing if they are powered by a purify appetite source�.

    Both a investigate and Mr. Cherry make a indicate that this information usually reflects a indicate in time – an middle step – while transitioning from aged record to new cleaner and safer ways of appetite era and consumption. Cherry points out a significance of perplexing to “clean adult [the] appetite zone first,â€� and of being wakeful of a repercussions that arise from generating electricity around unwashed sources and hoary fuels rather than clean, renewable sources. Electric vehicles might eventually outnumber required vehicles on a highways; given that fact, in a destiny when we block in your electric vehicle, we might wish to ask yourself a question: “Just how purify is a electricity I’m using?”

    additional sources: heartland/time.com environmental news service

    related: some-more electric car news and reviews on The Alternative Consumer

    coal-fired appetite plant print (top) around shutterstock.com

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