• Nuclear crisis worsening; growing radiation leaks at reactors nos. 3, 4

    The situation at the Fukushima Daiichi nuclear power plant appears increasingly dire, as efforts to cool overheating reactors have failed; Japanese military fire trucks are now spraying water at the plant’s no. 3 reactor; earlier efforts on Thursday to use helicopters to dump water on the rods have failed; the U.S. Nuclear Regulatory Commission chairman is particularly concerned about reactor no. 4 which houses spent fuel rods; spent fuel rods, placed in cooling tanks, are rapidly overheating as they are boiling away the water they are submerged in; the secondary containment unit at reactor no. 4 has been breached and radiation is now freely leaking out of the plant; high radiation levels are hindering efforts to repair the reactors

  • TSA retests body scanners amidst radiation exposure concerns

    The Transportation Security Administration (TSA) recently announced that it was retesting all of its full-body scanners over concerns that they were emitting high levels of radiation; maintenance records have shown that some scanners emitted radiation levels ten times higher than expected; TSA says that these increased levels were simply the result of a math mistake and that the machines do not pose a health risk; one type of body scanner in use relies on backscatter X-rays which produce very low levels of ionizing radiation; experts worry about the long-term effects of repeated exposure at low levels

  • Japan's nuclear crisis increasingly dire

    Japan’s ongoing nuclear saga took a decided turn for the worse on Tuesday when a third explosion at a nuclear reactor may have cracked the containment unit protecting it, causing large amounts of radiation to leak out; the government requested assistance from the IAEA on Tuesday and teams were dispatched to help monitor radiation and human health; citizens within a thirteen mile radius of the Fukushima Daiichi power plant were evacuated and 140,000 residents within a twenty mile radius have been advised to stay indoors; officials also established a twenty mile no-fly zone around the power plant; officials in Tokyo reported that radiation levels were ten times their normal levels; experts say that these increased exposure levels do not pose an immediate threat to people, but the long-term effect remains unknown; the Tokyo Electric Power Company is considering using helicopters to pour cold water on top of overheating rooftops covering spent fuel rods; a small crew of fifty technicians at the badly damaged power plant is bravely fighting through high radiation levels and fires to contain the three reactors

  • EU considering subjecting nuclear plants to stress tests

    The EU is considering subjecting the 150 nuclear reactors operating in Europe to stress test to check their safety in light of Japan’s nuclear crisis; the EU’s executive arm has no power to send experts to nuclear plants to see whether they are safe, but can discuss stress tests to see if EU nations would authorize them

  • Nuclear terrorism is a preventable catastrophe

    Graham Allison, a nuclear proliferation expert, warns of the seriousness of the threat of nuclear terrorism and the ease with which rogue states or terrorists groups can obtain weapons or fissile material and the knowledge essential to developing production capability; “The number of rogue states and terrorist groups seeking to acquire nuclear weapons is increasing. There are a number of states willing to sell it to anyone, and a larger number of sites where enriched weapons grade plutonium and uranium can be found in conditions where they might be vulnerable to theft due to lack of security,” he says

  • Californians anxious about safety of nuclear reactors

    The parallels between Japan and California are sobering: As in Japan, California’s two plants — Diablo Canyon near San Luis Obispo and San Onofre in Southern California — sit in active earthquake zones; like Japan’s, both rest beside the ocean and were built more than a quarter-century ago; perhaps most troubling, the San Onofre plant straddles two counties in Southern California with a combined population of 6 million people

  • OSI Systems to develop advanced cargo screening system

    Rapiscan Systems, the security division of OSI Systems, Inc., was recently awarded a $29 million contract with DHS’ Science and Technology Directorate to develop sophisticated new cargo screening systems; the program is designed to produce the next generation of non-intrusive cargo screening systems that will be capable of automatically detecting and identifying multiple threats and contraband including explosives, narcotics, and chemical weapons in cargo containers entering the United States by air, land, and sea.

  • Official: U.S. safe from Japanese radiation

    U.S nuclear officials said that there was very little chance that harmful levels of radiation from Japan’s nuclear reactors would reach Hawaii or the west coast of the United States; the head of the Nuclear Regulatory Commission (NRC) also said nuclear plants in the United States were designed to withstand natural disasters like earthquakes and tsunamis; readings from radiation sensors placed on the west coast have not detected any increases in radiation levels and experts do not expect any increases; Japanese utilities have flooded two nuclear reactors with sea water in a desperate attempt to cool them down and prevent a meltdown; the NRC has dispatched two nuclear experts to Japan to assist with efforts to keep three damaged reactors from melting down

  • Future of U.S. nuclear plans uncertain after Japanese nuclear crisis

    As Japan continues its struggle to control its nuclear reactors, the future of the U.S. nuclear industry has become increasingly uncertain; nuclear power had emerged as the bipartisan solution to easing America’s dependency on oil; in February 2010, President Obama announced $8.3 billion in loan guarantees to energy companies to build the first new nuclear power plants in the United States in almost thirty years; some lawmakers have called for a moratorium and stricter safety regulations, while others are urging for a more measured response; Energy Secretary Stephen Chu and Gregory B. Jaczko, the chairman of the Nuclear Regulatory Commission, will testify before the House Energy and Commerce committee on Wednesday

  • New technology allows detection of nuclear materials from a mile away

    New detection technology would allow illicit nuclear material to be detected from up to a mile away; the technology, developed by the Idaho National Laboratory, will help protect the United States against the smuggling of nuclear materials into the country; field tests will begin this summer

  • Detecting invisible threats to first responders, soldiers

    There are many methods currently being used that can detect chemical and biological agents and explosive compounds, but none allows for the unique fingerprinting of threat agents at trace levels; researchers have overcome this limitation with surface enhanced Raman scattering (SERS) using optically stimulated plasmon oscillations in nanostructured substrates; SERS offers several potential advantages over other spectroscopic techniques because of its measurement speed, high sensitivity, portability, and simple maneuverability

  • Army to request proposals for biological agent detection system

    The Army is set to begin requesting proposals for the initial phase of its Joint Biological Standoff Detection System Increment 2 (JBSDS 2) program at the end of March; the program’s objective is to procure fully functional biological detection systems; JBSDS 2 is designed to provide devices capable of detecting, tracking, and identifying biological warfare clouds; the program specifies that the devices should be capable of identifying any biological agent, organism, or poison that is capable of killing, incapacitating, or impeding a large force

  • Army signs deal with ChemImage for explosive detection technology

    The U.S. Army’s Space and Missile Defense command recently signed a $17 million contract with ChemImage Corporation to implement its real-time sensor technology to detect explosive threats in the field; ChemImage’s technology would give U.S. troops the ability to identify objects from a distance to determine if they are explosive, chemical, or biological threats; the devices rely on molecular spectroscopy and digital imaging to analyze material

  • Explosive-detecting rats to save soldiers' lives

    An Oklahoma State University researcher received a $740,000 grant from the Department of Defense to conduct the research into using rats as landmine sniffers; rats have three advantages as bomb sniffers: the rodents, about the size of a small cat, can cover a lot of ground quickly; their acute sense of smell enables them to sniff out land mines, but they are small enough that they do not detonate the mines; also, they do not form attachments to their handlers so anyone could deploy them