Nuclear power

  • Problems continue to plague the Oxide Conversion Facility at Y-12

    Oxide conversion is critical to recycling weapons-grade uranium, making it useful in nuclear warheads or for other purposes. The Oxide Conversion Facility (OCF) at the Y-12National Security Complex has been operating inconsistently in recent years. A report by the staff of the Defense Nuclear Facilities Safety Board(DNFSB) said there was a plan to resume operations the week of 7 April 2014, but that did not happen.

  • Absorbent used in kitty litter may be cause of radiation leaks in U.S. nuke dump

    A wheat-based absorbent often used in kitty litter may be the likely cause of the radiation leak that led to the closure of the Waste Isolation Pilot Plant(WIPP), the U.S. only underground nuclear waste repository, according to Jim Conca, a former geochemist at Los Alamos National Laboratory(LANL). Conca noted that EnergySolutions, a Salt Lake City-based company hired to  package radioactive waste at LANL into containers for shipment to the WIPP, switched from using a clay-based absorbent in the storage drums to a wheat-based mixture.

  • Lawmakers want safer waste storage at nuclear plants

    Lawmakers on Tuesday introduced a set of bills aimed at improving the safety and security of nuclear power plants’ waste in the event of a natural disaster or terrorism. One of the bills would require nuclear power plant operators to accelerate the transfer of nuclear waste stored in spent fuel pools into dry cask storage units. Current Nuclear Regulatory Commission(NRC) regulations allow spent fuel to remain in spent fuel pools until the reactor completes decommissioning, which can take as long as sixty years. Another bill would stop the NRC from issuing exemptions to its emergency response and security requirements for reactors that have been permanently decommissioned.

  • Leaders of Chinese city delay alerting residents to deadly radiation risk

    Authorities in the East China city of Nanjing delayed,for thirty-six hours, notifying residents about the loss of deadly isotope iridium-192 pellets at a local industrial plant. The pellets disappeared on Wednesday, and plant officials informed government authorities on Thursday – but did not inform city residents until Saturday. The extremely toxic pellets, the size of beans, were found the following Saturday in an open field one kilometer from the plant. The plant management detained four employees at the plant on Sunday for violating radioactive work regulations and storage rules, and they are likely to face criminal charges.The plant is using the isotope to find flaws in metal components.

  • 24 U.S. nuclear plants vulnerable to earthquakes

    The U.S Nuclear Regulatory Commission (NRC) has concluded that the designs of twenty-four U.S. nuclear plants do not meet contemporary standards to withstand an earthquake in the vicinity of the facility. This analysis has revealed that these facilities could face significant, even disastrous, damage from earthquakes which are larger than what they were designed to encounter.

  • South Carolina withdraws MOX lawsuit against DOE, NNSA

    The state of South Carolina said Friday that it would not go ahead with its lawsuit against the Department of Energy and the National Nuclear Security Administration (NNSA) in support of the Savannah River Site’s Mixed Oxide (MOX) Fuel Fabrication Facility. The dismissal of the lawsuit follows an announcement last Tuesday by the DOE and NNSA that construction will continue on the MOX facility through the end of the fiscal year. The two agencies made it clear, though, that they still plan to mothball the plant.

  • Lawmakers urge NRC not to exempt shut-down nuclear plants from emergency, security regulations

    Lawmakers are urging the U.S. Nuclear Regulatory Commission (NRC) to halt exemption of recently- shuttered nuclear power plants from emergency-planning and security regulations. The lawmakers are especially concerned about the nuclear waste which will continue to be stored on the grounds of shut-down nuclear plants, saying that the stored radioactive waste continues to be a security threat whether or not the plant itself is still operational.

  • Birds in and around Chernobyl's exclusion zone adapting to ionizing radiation

    Birds in the exclusion zone around Chernobyl are adapting to — and may even be benefiting from — long-term exposure to radiation, ecologists have found. The study is first evidence that wild animals adapt to ionizing radiation, and the first to show that birds which produce most pheomelanin, a pigment in feathers, have greatest problems coping with radiation exposure.

  • Threats from insiders are the most serious security challenges nuclear facilities face

    Insider threats are the most serious challenge confronting nuclear facilities in today’s world, a new study says. In every case of theft of nuclear materials where the circumstances of the theft are known, the perpetrators were either insiders or had help from insiders, the study found. Theft is not the only danger facing facility operators; sabotage is a risk as well, the study authors say.

  • Promoting nuclear power to avoid geoengineering

    There are two basic geoengineering strategies to reduce climate change: injecting aerosols such as sulfates into the stratosphere to block a portion of the sun’s radiation and thereby cool the Earth, much as volcanic emissions do; and the large-scale removal of carbon dioxide from the atmosphere. The aerosol-injection approach is much more likely to be pursued at current stages of technological development. Scientists say that in order to avoid the need for geoengineering, which could have enormous unforeseen consequences, the international community should pursue increased deployment of nuclear power plants, which do not emit carbon dioxide, to address the climate crisis. Many climate scientists are generally supportive of nuclear engineering and less fearful of it than they are of geoengineering.

  • S.C. fights to keep costly plutonium processing project alive

    The United States and Russia have agreed to dispose of thirty-four tons of weapon-grade plutonium each, an amount equal to 17,000 nuclear warheads. The United States budgeted $4 billion for a mixed-oxide fuel project, known as MOX, at the Savannah River Site, S.C., to process the plutonium, but construction costs have now reached $8 billion, and officials estimate the facility will cost about $30 billion over its operating years. DOE has suspended the MOX project and is looking for alternative plutonium processing methods. South Carolina has sued the federal government, arguing that since Congress has authorized the funds for MOX, the administration must spend the money.

  • Some see small modular reactors as offering a better future for the nuclear industry

    A full-size reactor costs up to $8 billion, takes years to build, and decades to achieve a return on investment. Some experts say the future of the nuclear industry should be based on small underground reactors, which are cheaper and quicker to build. Other experts say that smaller reactors mean needing many more of them to produce the same amount of power as traditional reactors, and having more reactors means increasing security concerns.

  • Debate over Ontario, Canada underground nuclear waste facility intensifies

    Ontario Power Generation’s (OPG) proposal to construct an underground nuclear waste disposal facility near the company’s Bruce Nuclear plantand on the edge of the Great Lakes is facing growing opposition from local municipalities and environmentalists. The facility would store low and intermediate nuclear waste from OPG’s Bruce, Pickering, and Darlington nuclear facilities. Environmentalists are concerned that a leak in the underground facility would be devastating for communities which depend on water from the Great Lakes.

  • Red Team’s concepts, approach gain support

    Headed by Thom Mason, director of Oak Ridge National Laboratory (ORNL), Red Team aims to modernize the uranium processing procedure on a budget of $4.2 billion to $6.5 billion. Even before Red Teamdelivered its report on alternatives to the expensive Uranium Processing Facility (UPF) at the Y-12 nuclear weapons plant by the 15 April 2014 deadline, the group of experts, who come from different disciplines, had already gained support among energy officials and some members of Congress.

  • Floating nuclear plants could ride out tsunamis

    When an earthquake and tsunami struck the Fukushima Daiichi nuclear plant complex in 2011, neither the quake nor the inundation caused the ensuing contamination. Rather, it was the aftereffects — specifically, the lack of cooling for the reactor cores, due to a shutdown of all power at the station — that caused most of the harm. A new design for nuclear plants built on floating platforms, modeled after those used for offshore oil drilling, could help avoid such consequences in the future. Such floating plants would be designed to be automatically cooled by the surrounding seawater in a worst-case scenario, which would indefinitely prevent any melting of fuel rods, or escape of radioactive material.