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Worker exposed to Uranium Hexafluoride - don't worry, 'He' feels fine...
"There's
no radiation at all coming from him. He feels just fine," said Otmar
Schober, head of the nuclear medicine clinic at Muenster University Hospital.
Blood, saliva and urine samples are being sent to a laboratory to find if he
absorbed any of the substance. Uranium
hexafluoride forms a corrosive acid when it comes in contact with moisture in
air and can be lethal from contact alone. The Urenco Company gave no details on how the substance escaped in the container preparation unit at Germany's only enrichment plant on Thursday. Urenco said there had been no threat to the public. A spokeswoman said an investigation into the cause was under way. The plant enriches uranium for use in nuclear-power reactors. Anti-nuclear groups have vainly called for it to be closed.(29/1/10) Images: Wikimedia / Cameco US power plants keep going - oh goody...
With
nuclear providing always-on electricity that will become more cost-effective if
a price is placed on heat-trapping carbon dioxide emissions, utilities have
found it is now viable to replace turbines or lids that have been worn down by
radiation exposure or wear. Many engineers are convinced that nearly any plant
parts, most of which were not designed to be replaced, can be swapped out. "We
think we can replace almost every component in a nuclear power plant,"
said Jan van der Lee, director of the Materials Ageing Institute (MAI), a
nuclear research facility inaugurated this week in France and run by the
state-owned nuclear giant EDF. "We don't want to wait until something breaks. By identifying components that are wearing down and replacing them, suddenly nuclear plants will find that, technically, there is no age limit" he said. Is
it illegal to expose people to any level of radiation without medical
justification?
Fears
have been raised that the Rapiscan Secure 1000, which resembles a large filing
cabinet, may not be safe for women in the early stages of pregnancy or
children. Other travellers might not want to be scanned because of the graphic
nature of the images, bosses admit. The
X-Rays penetrate one-tenth of an inch into the body, enough to detect any
devices or drugs hidden just under the skin. Dr Sarah Burnett, who works as an
independent radiologist, raised concerns about the safety of the device two years
ago, when she was asked to undergo a full body scan at Luton Airport. She
said: 'It is illegal to expose people to any level of radiation without medical
justification. So how is it that the Government is allowed to irradiate us
willy-nilly at airports? 'I am particularly concerned about the potential
effects on women in their first trimester of pregnancy.’ Here’s a handy link
for you to look at: Justification of Practices
Involving Ionising Radiation Regulations 2004[11]. 'The machines are referred to as 'low-dose', but there is a school of thought that there is no 'safe' radiation dose," said Dr Burnett, who has had 15 years' experience working in the NHS. "It is true that passengers are exposed to 'cosmic' radiation within the aircraft, but there's nothing they can do about that - it can't be avoided. We can, however, avoid deliberately exposing people to radiation.' Sarah
Barrett, head of customer experience at Manchester Airport, played down the
fears, claiming that even frequent fliers did not need to worry about radiation
from the low-level x-ray. She said a dental X-ray transmits 20,000 times more
radiation and that the Rapiscan would make the check-in process much quicker
for passengers, who will not have to remove their coats, shoes or belts. So, dear reader, what do you
prefer: a full pat-down if you make the arch ‘beep’ or a low-level dose of
radiation?
Having radiation treatment? Best read this, then (we are not scaremongering, just reporting)
Experts
from 40 countries attending the workshop agreed that reliance on technology in medicine
is increasing, radiation doses are becoming higher and there are serious
"knowledge deficits" among health professionals. The rate at which
radiation is used unnecessarily is in the range of 30 percent the workshop
participants were told. During
the event, it also emerged that the traditional approach to communication of
radiation dose and risk among referring physicians and radiological
practitioners has been ineffective and a new initiative to standardise a new
simple approach should be undertaken. But experts also said that radiological
diagnosis is a vital tool that has saved countless lives allowing doctors to
detect hidden diseases and make ever more accurate diagnoses The
workshop was part of a collaborative global initiative the IAEA is taking with
other international organizations to developing a series of measures aimed at
strengthening radiation protection of patient.
Lab coats on - again - this time we're off to Sweden
Material that is 100,000 times
heavier than water and more dense than the core of the sun is being produced at
the University of Gothenburg in Sweden and is aimed at an energy process that
is both more sustainable and less damaging to the environment than current nuclear
power. Atmospheric
scientists at the University of Gothenburg's department of chemistry have
produced a material so heavy that a 10 cm cube would weigh 130 tons. So far,
only microscopic amounts of the new material have been produced. New
measurements that have been published in two scientific journals, however, have
shown that the distance between atoms in the material is much smaller than in
normal matter. Leif
Holmlid, a professor in the chemistry department, said he believes it's an
important step on the road to commercial use of the material. The material is
produced from "heavy hydrogen," also known as deuterium, and is
therefore known as "ultra-dense deuterium." Deuterium
is an isotope of hydrogen that is found in large quantities in water; more than
one atom per 10,000 hydrogen atoms has a deuterium nucleus. The isotope is
denoted "2H" or "D." Deuterium is used in a number of
conventional nuclear reactors in the form of heavy water (DO). Home Geiger Counters UV Torches & Marbles Bits & Bobs Nuclear Novelties Science Signs & Labels Nibbles Sources D’youthinkhesaurus? Nope, it’s
Reactorsaurus: Dounreay’s newest recruit.
The 75 tonne robot takes the form of a traversing
carriage with two 16 metre arms. Operators in a remote control room will use
binocular cameras on each arm to take apart the highly radioactive internal
structures of the 254 MWe reactor. The
arms will be able to cut up and reduce the size of reactor components using
diamond wire, hydraulic shears, oxy/propane and plasma cutting. Operators will
also be able to listen in on the action using two microphones on each of
the arms. Jared Fraser, head of the Dounreay Site Restoration Ltd's design team, said: "Completion of the design phase of a complex and unique piece of equipment like this is a credit to the entire team.” Psst: you live near North Anna? You want some pills..? I got some..
Pills to protect against a specific type of radiation poisoning will continue to be provided to those who live near North Anna Power Station in Virginia (pictured). The
Nuclear Regulatory Commission announced this week that it will keep supplying
states with potassium iodide. Residents around Dominion power's other Virginia
nuclear plant - Surry Power Station on the James River in Surry County - also
would be included. The medicine is intended for anyone who lives or works
within each plant's 10-mile emergency planning zone. Potassium iodide is a non-prescription medication routinely added to table salt to make it "iodized." It can protect against poisoning by radioactive iodine, one of the contaminants that could be released during a severe reactor accident. It also helps reduce the risk of thyroid cancer and other diseases by blocking the thyroid gland's absorption of radioactive iodine.
New fusion reactor possible from boffins at Texas University
Physicists
at the University of Texas have proposed a new type of fusion reactor
that could destroy the most biologically hazardous nuclear waste. It would consist
of a spherical tokamak containing a deuterium-tritium plasma, which would
produce streams of neutrons that would be fired into the waste held in a
"blanket" around the reactor. If built, the reactor could be
operational in 15-20 years’ time and could even be used to generate
electricity. High-level
nuclear waste contains not only uranium and plutonium but also other
"transuranic" elements that are heavier than uranium and are the
principal source of longer-lived radiation. Most such waste is put into stainless-steel
flasks and stored in vaults, although it is possible to reprocess spent fuel
and separate uranium and plutonium from the fission products. The new reactor would destroy the transuranic waste in a two-step process both involving the process of "transmutation". The idea of transmutation has been around for some time and involves converting radioactive material, with a half-life on a geological timescale, into something with a much shorter half-life. Waste would still need to be stored, but its long-term hazard would be reduced. Meet me in St Louis, toothy....?
Questionnaires will soon be sent
to thousands of men who donated their baby teeth half a century ago to
scientists seeking to learn whether radioactive
fallout in milk the donors drank as children affected their health
later in life. Home Geiger Counters UV Torches & Marbles Bits & Bobs Nuclear Novelties Science Signs & Labels Nibbles Sources
I was going to say it's a load of balls - but it's not: meet the Radball...
Matt Clough is a member of a team of
scientists at the recently-established National Nuclear Laboratory, a
nuclear technology services provider owned by the state, but run as a private
enterprise.
Mr
Clough and his team are behind the RadBall, or
radiation ball, made from a polymer material that becomes opaque when exposed
to radiation. The basic idea is that it's transparent when it's new," he
grins, holding it up against the light. The darker it is, the more radiation
it's absorbed." To
nuclear de-commissioners, who are working to clean up the mess left behind from
half a century of nuclear weapons and energy production, the RadBall could soon
become a vital tool.
The
RadBall's main advantage is that it is very portable. "You can use it in
hard-to-reach areas in the plant and in areas where electric devices struggle
with high radiation levels," Mr Clough explains. "It
tells us where the hazards are and how severe they are."
Every home should have one of these - whatever it is...
Scientists at Los
Alamos have said that nuclear power plants smaller than a garden shed
and able to power 20,000 homes will be on sale within five years. The miniature
reactors will be factory-sealed, contain no weapons-grade material, have no
moving parts and will be nearly impossible to steal because they will be
encased in concrete and buried underground. Hyperion, a New Mexico-based
company that has been given the go-ahead by the US government, said last week
that it has taken its first firm orders and plans to start mass production
within five years. 'Our goal is to generate electricity for 10 cents a watt
anywhere in the world,' said John Deal, chief executive of Hyperion. 'They will
cost approximately $25m [£13m] each. For a community with 10,000 households,
that is a very affordable $250 per home.'
Deal claims to have more than 100 firm orders, largely from the oil and electricity industries, but says the company is also targeting developing countries and isolated communities. 'It's leapfrog technology,' he said. Sticky tape X-Rays - new discovery from UCLA
Peeling
ordinary sticky tape can generate bursts of X-rays
intense enough to produce an image of the bones in your fingers. Seth Putterman
and colleagues from the University of California, Los Angeles used a motor to
unwind a roll of sticky tape and recorded the electromagnetic emissions.
Ripping the tape from its roll at 3 centimetres per second generated X-ray
bursts of 15 kiloelectronvolts – each lasting one-billionth of a second, and
containing over a million photons. Putterman
admits he is not sure exactly what is going on. "My attitude is to marvel
at the phenomenon – all we are doing is peeling tape, and nature sets up a
process that gives you nanosecond X-ray bursts." Exactly
what drives this process is still a mystery, but it is well known that if two
surfaces rub over one another, one becomes positively charged and one
negatively charged. In
this case, the sticky adhesive becomes positive, and the polyethylene roll
negative. This charge difference builds up until an electron jumps from the
adhesive to the roll, with enough energy to produce X-rays when it hits the
tape. Home Geiger Counters UV Torches & Marbles Bits & Bobs Nuclear Novelties Science Signs & Labels Nibbles Sources Moonbase living gets one step nearer thanks to NASA
NASA
astronauts will need power sources when they return to the moon and
establish a lunar outpost and engineers are exploring the possibility of
nuclear fission to provide the necessary power. A
fission surface power system on the moon has the potential to generate a steady
40 kilowatts of electric power, enough for about eight houses on Earth. It
works by splitting uranium atoms in a reactor to generate heat that then is
converted into electric power. For more Space nuggets, please go to the Lost In Space pages Granite worktops - are they a health hazard in your home?
There has been a lot of chatter
on-line recently about the safety of granite
worktops as many people now choose them to put in their kitchens. So, on your behalf, we have been searching
around for an answer and have come across this on the pages of The
Independent’s web site. Question: Are granite worktops a
health hazard in the home? The short answer is no. Radon is a
natural radioactive gas that is present at low levels in all homes and even in
outdoor air. Higher levels can occur in some parts of the country, such as the
limestone areas of Derbyshire and the North-west and the granite areas of the
South-west. Exposure to high levels of radon over a long period significantly
increases the risk of lung cancer. The main source of radon in homes is the
ground beneath the building. Granite worktops and fireplaces do not emit much
radon and will not increase the radon level inside a home by a significant
amount. Further information about radon is available on the website of the National
Radiological Protection Board, or a free information pack
can be obtained by ringing them on 0800 614529.
Want to own one of these?
Launched
by Lab Impex Systems, the SmartCAM is the next generation Continuous Air
Monitor (CAM) that will give users unparalleled performance in terms of
detectable limit, sensitivity and speed to alarm. The SmartCAM utilises
state-of-the-art Spectral Measurement Analysis in Real Time (SMART)
technology. This provides real advances in alpha particulate detection
techniques. In
operation the SmartCAM continually monitors alpha and beta particulates
deposited on a static card mounted filter (optional moving filter will also be
available) with a high efficiency solid - state detector. The
SmartCAM utilises proven features of LIS's previous generation CAM, the
CMS-2000, such as the highly efficient head design. Where the SmartCAM
sets itself apart from other systems is in its ability to accurately determine
background (Radon and Gamma) ensuring the limitation of costly false alarms.
More information can be found at www.lab-impex-systems.com
Anglo-French nuclear plan to be unveiled
Mr Sarkozy, who arrives today, is to offer French expertise
to help Britain build replacement nuclear reactors for its ageing plants,
responsible for 20 % of the UK’s electricity production. Whilst this joint effort will be hailed as a drive to reduce greenhouse gas emissions by reducing Britain's reliance on fossil fuels, anti-nuclear campaigners are expected to react with dismay to the notion that Britain may follow the lead of France, which generates 80 % cent of its electricity from nuclear energy. Well, you know where to get your Geiger counters, don't you?
Israel purchases Logol pills We
have a medical story for you today filed by Shahar Ilan, for the Haaretz
web pages. Defence establishment officials reported on Sunday that
Israel has recently purchased a new supply of Logol pills used
against nuclear radiation. This
debate has arisen as Israel was planning to bring an electrical particle
accelerator on line by March 10th which is supposed to take over the functions
currently being done by the Soreq reactor.
US worker inhales Strontium 90
Home Geiger Counters UV Torches & Marbles Bits & Bobs Nuclear Novelties Science Signs & Labels Nibbles Sources
Oz patients await medical tests With
thanks to Richard Macey, writing for the Sydney Morning Herald’s
web pages. Patients in Australia
face having medical tests postponed because of another delay in restarting
the new Lucas Heights nuclear reactor. The
$400 million OPAL reactor was shut down in July, just three months after being
opened by the then prime minister, John Howard, when uranium fuel plates
started coming loose. Without the
reactor, Australia has had to import radioactive ingredients, needed to make
the 500,000 doses of nuclear medicine used every year, from South Africa and
Canada. The fault, requiring the redesign of fuel plates used to power the reactor, has already forced a rationing of radiopharmaceuticals, with doctors and Lucas Heights specialists having to choose who should miss out when imports are held up. The Australian Nuclear Science and Technology Organisation originally expected the Argentine-designed reactor would be out of service for only eight weeks while repairs were made.
Isotope problems in Canada With
thanks to those nice people writing for the Toronto Star web pages for
this one. The supplier of medical isotopes,
based in Ottawa, Canada, is contradicting the federal government's version of
when Ottawa first knew there was a problem with the isotope supply in November
2007. Officials
of MDS Nordion told a recent hearing that they were blunt when they met with
officials from the Department of Natural Resources on Nov. 22. "We were
very clear. This was a crisis situation. We had a global supply issue that was
going to impact nuclear medicine and physicians around the world," said
Grant Malkoske, vice-president of Strategic Technologies at MDS. The
company reprocesses isotopes produced by Atomic Energy of Canada Ltd. in Chalk
River, Ont., and sells them to pharmaceutical companies around the world.
It's science, Jim, but not as we know it
Rice University's Jim Tour and his colleagues at two
Houston health institutions have found a drug that, when given to mice before
radiation exposure, is 5,000 times more effective than the best-available
therapy for radiation injuries. Officials at the US Department of Defence, seeking
remedies for the radiation sickness that would follow a nuclear strike, were so
taken by the research that they recently gave Tour a $540,000 (around £271,000)
grant and asked him to compress the next phase of testing into an almost
unheard-of nine months. "They originally asked for something in six
months, but I told them that was impossible," said Tour, a chemist who
directs Rice's Carbon Nanotechnology Laboratory.
Get your particle accelerator here With
thanks to Andrew Pollack, writing for the International Herald
Tribune. Medical
centres in the US are rushing to turn nuclear particle accelerators, formerly
used only for exotic physics research, into the latest weapons against cancer. "I'm
fascinated and horrified by the way it's developing," said Anthony L.
Zietman, a radiation oncologist at Harvard and Massachusetts General Hospital,
which operates a proton centre "This is the dark side of American
medicine." It costs around $50,000 to treat prostrate cancer with protons,
which is around twice the price of X-ray treatment. Once hospitals have made such a huge investment, experts like Dr. Zietman say, doctors will be under pressure to guide patients toward proton therapy when a less costly alternative might suffice.
A look inside Australia's Opal Reactor
Engineers at the U.S. Department of Energy's Argonne National Laboratory, using an emerging sensing technology, have developed a suite of sensors for national security applications that can quickly and effectively detect chemical, biological, nuclear and explosive materials. This technology can also be used to detect if a country is using its nuclear reactors to produce material for nuclear weapons.
Canadian nuclear plant reopens after shutdown Found on a recent trawl through the BBC’s
web pages. A Canadian nuclear reactor producing two-thirds of the world's medical isotopes resumed
operations recently after being shut down for a month. The
country's Atomic Energy Agency says that new supplies will be ready within days
to meet a worldwide shortage. The
Chalk River nuclear plant in the province of Ontario, in Eastern Canada,
produces isotopes used all over the world for medical imaging and diagnostic
scans for fractures, cancer and heart conditions. The 50-year old reactor was originally shut down for a week of routine maintenance but the country's nuclear regulator refused to allow it to resume production until a number of safety issues were resolved.
New Trinitite theory emerges
The White Sands public-affairs staff had been telling it the same way until Los Alamos National Lab Scientists Robert Hermes and William Strickfaden published the results of their recent investigation.
Strickfaden said he ran the appropriate numbers through the appropriate formulas and could not get the atomic fireball to form glass in the thickness found on site. He said the fireball did not hover over the site long enough to account for glass that thick. After further research, they suggested that the desert sand was scooped up into the fireball instead of being baked on the ground underneath it.
Thorium Oxide - better in reactors than uranium Thorium Oxide could be the answer to many concerns about nuclear power. Reactors that use thorium, rather than uranium, produce radioactive waste that needs to be stored for only 500 years. They can also incinerate the much longer-lived radioactive products from conventional nuclear plants, making a Chernobyl-type meltdown virtually impossible: Okay…
Treaty launches £7bn fusion project
MIT developes power output technology Researchers at MIT have developed technology they say will boost the power output of nuclear power plants by 50 per cent, and make them safer to run. Well, that’s okay then…
You can't make a bomb in a bathtub Making an atomic bomb isn’t for dummies - or for sissies. "It's not done in your basement or bathtub," said Robert Norris, a nuclear weapons expert at the Natural Resources Defense Council, an environmental group in Washington. Okay… Home Geiger Counters UV Torches & Marbles Bits & Bobs Nuclear Novelties Science Signs & Labels Nibbles Sources
Vermont Yankee off-line
Plant
officials said the shutdown occurred during routine testing of steam valves.
Plant technicians are trying to determine the cause of the automatic shutdown. Officials
said the plant remains in a safe and stable condition and will be restarted after
engineers complete a thorough evaluation of the shutdown. Prior to the shutdown, the plant had been operating at a 62% power level to allow repairs on one of the plants two cooling towers.
1kg uranium produces 4,000kwh electricity Hands up if you knew this: One kilogram (2.2 pounds) of natural uranium can produce more than 4,000 kilowatt hours of electricity - equivalent to burning 38 tons of coal or 150 barrels of oil
N Korea claims successful test
Uranium 238 has 4.5bn year half-life Here’s a statistic to make you think: Uranium 238, the most prevalent isotope in uranium concentrates, has a half-life of about 4.5 billion years.
Plutonium 'valuable energy source' Plutonium routinely made in power reactors and that from dismantled nuclear weapons, is a valuable energy source when integrated into the nuclear fuel cycle.
Plutonium not now in Earth's crust Here’s something to ponder over your cornflakes, again from the World-Nuclear Association web site: Plutonium has occurred naturally, but except for trace quantities it is not now found in the earth's crust.
Japanese town wants to host new plant A Japanese town has put itself forward to possibly host the country's high-level radioactive waste storage facility. Toyocho, in Kochi prefecture, was the first to respond to a government invitation
1 tonne of fuel same as 120,000 tonnes of coal According to the World Nuclear Transport
Institute
1 tonne of nuclear fuel is the equivalent of burning 120,000 tonnes of
coal… 85% radiation comes from natural sources Another gem from the people at the
World Nuclear Transport Institute : 85% of the world’s
radiation comes from naturally radioactive sources
We're all bathed on radiation Here’s something to make you
think: every plant, animal and human that has ever lived on Earth has been bathed in radiation for every second of its life.
Seawater plant due for Pakistan A thermal seawater desalination plant will be coupled to the Karachi nuclear power plant as a "first step" towards the employment of large scale production of potable water which has "socio-economic significance" for Pakistan.
The country's Atomic Energy Commission (PAEC) has teamed up with the International Atomic Energy Agency (IAEA) to undertake a Coordinated Research Project The result of the work will be the Nuclear Desalination Demonstration Plant (NDDP), which will use extraction steam from one of the Karachi nuclear plant's (Kanupp's) feed heaters to desalinate seawater.
Nuts to you - Brazils are radioactive Brazil nuts are often said to be one of the most radioactive foodstuffs in the
world. The Brazil nut tree tends to accumulate high amounts of calcium. In the
process, the nut also accumulates high levels of other elements such as barium
and radium.
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