[ RadSafe ] Penn professor to present research on radiation-induced cancer
Sandy Perle
sandyfl at earthlink.net
Wed Apr 12 12:33:36 CDT 2006
Index:
Penn professor to present research on radiation-induced cancer
Critics say radiation experts´ input is unfair to ex-workers
Japan nuclear plant reports leak, no outside impact
Town Sees Nuclear Plans as a Boon, Not a Threat
Iran Hits Milestone in Nuclear Technology
Nuclear energy facilitates sustainable development: Aqazadeh Mashhad
=================================================
Penn professor to present research on radiation-induced cancer on
20th anniversary of Chernobyl
Findings could assist medical response in the event of a 'dirty bomb'
explosion
Philadelphia, PA- Virginia A. LiVolsi, MD, Professor of Pathology and
Laboratory Medicine at the University of Pennsylvania School of
Medicine, will be a key presenter at the "Living with Radiation in
the Modern World: Commemorating Chernobyl, Remembering Hiroshima /
Nagasaki," conference to commemorate the 20th anniversary of the
Chernobyl nuclear reactor meltdown. An expert in thyroid pathology,
Dr. LiVolsi will present her work on, "Specific Pathological Findings
in Thyroid Cancer after Radiation Exposure." The conference, to be
held April 20th at the United Nations Building in New York City, is
co-sponsored by the World Information Transfer and the New York Eye
and Ear Infirmary.
Just before dawn on April 26th, 1986, the Number Four nuclear reactor
at Chernobyl exploded. The fallout was 400 times more radioactive
than what was released over Hiroshima during World War II, and it
covered an area the size of New Jersey. Numerous radioactive elements
were released into the air - including radioactive iodine, an element
that is preferentially taken-up by the thyroid gland. As a result,
there was a rise in cancer - and, in particular, in thyroid cancer in
children. (Since the thyroids of children are much smaller than
adults, it is assumed that the relative dose of radioactive iodine
these thyroids received was much larger than the adult thyroids.)
Following the accident, an international panel of experts was formed
to study the after-effects of the accident. One group of specialists
- including pathologists who, like Dr. LiVolsi, have expertise in
thyroid pathology - was charged with studying the thyroid tumors that
had occurred to reach a consensus diagnosis. These analyses,
including samples of the tumors, have been made available to the
international research community to further our understanding of
thyroid-cancer development and radiation-induced tumors.
The isotopes of radioactive iodine that are suspected of causing the
outbreak of thyroid cancer have a relatively short half-life of eight
days, but other isotopes that were released in the explosion -- like
cesium 137 and strontium 90, will last for decades. One of the
interesting aspects of this research is that we are still seeing new
thyroid-cancer tumors in the exposed population - even though, after
20 years, there is no radioactive-iodine fallout left from the
accident," LiVolsi said. "In the future, it will be informative to
compare tumors that appeared initially to those that are occurring
now."
Chernobyl is still a threat to this day. The lead and steel
sarcophagus initially built around the Number Four Reactor has
decayed. A replacement structure is in the planning stages. This
replacement will take four-five years to assemble, cost over $800
million and be the largest movable structure ever built.
However, information learned from the Chernobyl accident could prove
valuable insofar as aiding and treating future victims of a "dirty
bomb" - a conventional explosion that scatters radioactive materials,
including the longer-lasting strontium 90 and cesium 137. According
to the Department of Homeland Security's National Terror Alert
Resource and Information Center website, the Washington Post reported
in March of 2002 that the Bush administration's consensus view is
that the al-Qaeda terrorist network probably had such acquired often-
stolen radioactive contaminants as strontium 90 and cesium 137, which
could be used in a "dirty bomb."
--------------
Critics say radiation experts´ input is unfair to ex-workers
WASHINGTON Apr 9 (AP) - For years, radiation experts at the nation´s
nuclear weapons sites failed to adequately protect workers from on-
the-job hazards. Now some of those experts are helping run a
compensation program for the workers.
The situation has attracted the attention of Congress, with one
lawmaker pressing for an investigation into whether the workers are
being treated fairly.
Rep. John Hostettler recently wrote to the investigative arm of
Congress to ask whether the contractor running the compensation
program has policies that are "sufficient to ensure that conflicts or
biases do not taint the credibility and quality of the science
produced to date."
Hostettler, R-Ind., is chairman of a House subcommittee that deals
with people bringing claims against the government.
Critics contend that the contractor, Oak Ridge Associated
Universities, has put into key jobs people who have managed radiation
monitoring programs at the weapons sites. In some cases, those people
were witnesses for the government when it fought compensation claims.
Jim Melius, who is on a presidential advisory board that oversees the
program, said, "It´s so critical for this program to be credible and
for the claimants to have an understanding and confidence that the
people who were monitoring them - and maybe in some cases failing to
monitor them properly - will not be the people passing judgment on
their exposures and on their compensation."
Nearly 73,000 workers or their survivors have filed claims under the
program, according to the Department of Labor.
"It´s a very difficult, complex dilemma that we face," said Larry
Elliott, who heads the office of compensation in the National
Institute for Occupational Safety and Health. The agency oversees the
contract.
Elliott said the guidelines would try to balance the need to rely on
the radiation experts at the nuclear facilities for their knowledge
of the sites with concerns about potential biases. He said it was
difficult to find experts on the effects of radiation who were not
tied to the government´s nuclear weapons program.
Kate Kimpan, who directs the contractor´s program, said her group
will adhere to the guidelines and "ensure that our conclusions are
beyond refute."
Five years ago, Congress decided to compensate the Cold War-era
workers - tens of thousands of whom worked at sites nationwide -
after the government admitted putting them at risk of cancer caused
by radiation exposure. Sick workers get $150,000 plus medical
benefits.
The Oak Ridge, Tenn.-based contractor is writing reports that detail
hazards at weapons facilities. The reports are blueprints the
contractor is using to estimate how much radiation workers were
exposed to.
Critics say some of the authors appear biased.
Kelly Schmidt, a worker and union leader at the Hanford site in
Washington state, has complained that authors of the Hanford report
managed important aspects of the radiation program there.
Schmidt noted that a version of the report stated it was unlikely
workers received large intakes of radiation that went unnoticed
because there was "rigorous workplace monitoring" at Hanford. "It
gives the impression that they´re saying, `Gosh, we did a great job,´
" Schmidt said.
------------------
Japan nuclear plant reports leak, no outside impact
TOKYO Apr 12 (Reuters) - Radioactive water leaked inside a Japanese
nuclear reprocessing plant but no one was injured and the leak had no
impact outside the plant, a spokesman for the plant's operator, Japan
Nuclear Fuel Ltd, said on Wednesday.
About 40 liters of water containing plutonium and uranium leaked
inside a concrete-lined cell at the plant for reprocessing spent
nuclear fuel in Rokkasho, northern Japan, on Tuesday when an employee
made an error in a remote-controlled process, the spokesman said.
He added that radioactivity monitors showed there had been no effect
outside the cell.
The plant began the current series of trial operations on March 31,
and the accident was the first at the facility since then. Previous
trials have at the facility since 2001 have also caused accidents,
and the plant has yet to go into operation.
-------------------
Town Sees Nuclear Plans as a Boon, Not a Threat
GAFFNEY, S.C. Apr 10 (New York Times) - Bill Whelchel, working the
main chair at Elmore's Barber Shop on Limestone Street, paused the
clippers above his customer's half-sculptured crew cut to consider
the question of atomic energy.
"I'm not worried at all about putting in a new nuclear power plant,"
said Mr. Whelchel, 76. "We're used to nuclear power around here.
Plus, it'll create jobs, and one thing I've learned is that working
people are happy people."
More than a quarter century after the accident at Three Mile Island
and two decades after Chernobyl, America's utilities stand at the
early edge of what promises to be the first large-scale wave of
nuclear plant construction since the 1980's.
And the energy companies are finding - especially in the small,
struggling Southeastern towns like Gaffney where most of the plants
are planned - that memories of those tragedies have faded and that
local governments and residents, eager for jobs and tax revenues to
replace vanished industries, are embracing them with enthusiasm.
Indeed, none of Mr. Whelchel's half-dozen customers said they had any
problem whatsoever with the idea of a nuclear facility going up down
the road.
"I can't remember hearing a single negative comment from any local
resident," Cody Sossamon, publisher of The Gaffney Ledger, said as he
sat in his office out near the highway.
Driven partly by federal Department of Energy projections that demand
for electrical power will increase 50 percent by 2025, and by recent
federal legislation offering a more streamlined application process
and financial incentives for new nuclear facilities, many utilities
are eager to get back into the atomic business.
"We initially were looking at 14 communities in the Southeast, and
then we narrowed that down to four," said Henry B. Barron Jr., chief
nuclear officer for Duke Power, which announced last month that it
would apply to build its first new nuclear plant in three decades
just outside Gaffney. "I found no single individual who had any
concerns about the plant. The few who did have concerns were worried
about increased traffic on the roads during construction."
In a March report, Fitch Ratings, a global financial research
company, said: "It is no longer a matter of debate whether there will
be new nuclear plants in the industry's future. Now, the discussion
has shifted to predictions of how many, where and when."
How many remains to be seen. Nine utilities have said they will apply
to build as many as 19 new nuclear units, but that does not mean all
of them will be built.
As to where, the list includes every state south of Maryland that
touches either the Atlantic Ocean or the Gulf of Mexico, except
Texas, and one facility in central Illinois. And the sites tend to be
in rural counties whose hard-pressed small towns - like Gaffney,
population 13,000 - clutch at the chance for new jobs and tax
revenue.
"The timeline that Duke gave us was that the application process
would take three to five years," said James P. Inman, executive
director of the Cherokee County Development Board, which led the
local drive to attract the new plant. "Then they'd build the first
unit, and it would go online around 2015. At least, that's the least
optimistic projection. We think it could happen as early as 2012."
Wanting the plant was a no-brainer for Gaffney, Mr. Inman said.
Some 1,500 new jobs are expected in the construction phase of the $4
billion to $6 billion facility, and then running the plant will take
1,000 employees. In addition, the plant is to pay $8.5 million in
annual taxes, to be split between the county and the state.
"You add to that the new home construction and the new businesses and
it looks to be a really good things for this community and this
county," Mr. Sossamon said.
If residents of the communities do seem eager for the plants, it is
not entirely unanimous. The Blue Ridge Environmental Defense League,
based in North Carolina, said earlier this month that it intended to
oppose construction of the plant outside Gaffney.
To attract Duke, county officials agreed to a package of financial
incentives, pretty much the same combination of tax breaks offered by
the other counties in North and South Carolina that were finalists
for the plant. But Gaffney also promised to establish new science,
math and engineering courses in local schools to make sure Duke finds
people to hire if the plant opens.
"We're looking at the kids who are in fifth grade," Mr. Inman said.
"Those are the ones who need to start getting ready now for the jobs
that are coming. That way they won't have to move away to find work
if they don't want to."
But now all of the big old mills have closed. From 1999 to 2003
alone, 2,500 textile employees lost their jobs. A few smaller
companies have come in to build newer and smaller mills, but now the
biggest employer is a Stouffer's frozen food plant on the outskirts
of town.
Gaffney's downtown today is a grid of small gift shops, bank
branches, pawnshops and dozens of empty storefronts. On a recent
weekday morning, Elmore's Barber Shop had the biggest crowd. The only
crane rising above downtown was in the process of tearing down the
last of the big textile mills.
For those from outside the area, Gaffney is probably best known for
the annual South Carolina Peach Festival, for the huge water tower
beside Interstate 85 in the shape of a giant peach and for the
sprawling outlet mall - roughly midway between Charlotte, N.C., and
Spartanburg, S.C. - that locals call the "yellow mall," for its egg
yolk color.
The prospective plant site is about a half-hour southeast of town, on
2,000 sloping acres beside the Broad River that Duke had previously
considered for a nuclear plant, 30 years ago, before declining demand
and increasing public anxiety about nuclear power caused them to drop
the plan. The land had since passed into the hands of another
utility, the Southern Company, which will be Duke's partner in the
new facility.
L. Hoke Parris, who retired from a local brick-making factory before
beginning a political career that has seen him become chairman of the
Cherokee County Council, said he was not surprised that the town and
its residents had no problem welcoming atomic energy into their
community.
"The financial impact here will be phenomenal," Mr. Parris said.
"Right now, downtown's pretty much dead. Pretty much all we've got is
Wal-Mart and the yellow mall."
Besides, he said, there have been nuclear facilities around the
region for decades, and he thinks residents in the Carolinas have
gotten used to them.
"I think people are just pretty much comfortable with nuclear power
in this part of the country," Mr. Parris said. "We're getting farther
away from Chernobyl and Three Mile Island."
---------------------
Iran Hits Milestone in Nuclear Technology
TEHRAN, Iran Apr 11 (AP) - Iran has successfully enriched uranium for
the first time, a landmark in its quest to develop nuclear fuel, hard-
line President Mahmoud Ahmadinejad said Tuesday, although he insisted
his country does not aim to develop atomic weapons.
In a nationally televised speech, Ahmadinejad called on the West "not
to cause an everlasting hatred in the hearts of Iranians" by trying
to force Iran to abandon uranium enrichment.
The announcement came ahead of a visit to Tehran this week by Mohamed
ElBaradei, the head of the U.N. nuclear watchdog agency, who is
trying to resolve the West's standoff with Iran. The U.N.
Security Council has demanded Iran stop all enrichment activity by
April 28. Iran has rejected this, saying it has a right to the
process.
"At this historic moment, with the blessings of God almighty and the
efforts made by our scientists, I declare here that the laboratory-
scale nuclear fuel cycle has been completed and young scientists
produced enriched uranium needed to the degree for nuclear power
plants Sunday," Ahmadinejad said.
"I formally declare that Iran has joined the club of nuclear
countries," he told an audience that included top military commanders
and clerics in the northwestern holy city of Mashhad. The crowd broke
into cheers of "Allahu akbar!" or "God is great!" Some stood and
thrust their fists in the air.
The White House denounced the latest comments by Iranian officials,
with spokesman Scott McClellan saying they "continue to show that
Iran is moving in the wrong direction."
Ahmadinejad said Iran "relies on the sublime beliefs that lie within
the Iranian and Islamic culture. Our nation does not get its strength
from nuclear arsenals."
He said Iran wanted to operate its nuclear program under supervision
by the International Atomic Energy Agency and within its rights
and regulations under the regulations of the Nuclear Non-
Proliferation Treaty.
The announcement does not mean Iran is immediately capable of
producing enough fuel to run or a reactor or develop the material
needed for a nuclear warhead. Uranium enrichment can produce either,
but it must be carried out on a much larger scale, using thousands of
centrifuges.
Iran succeeded in enriching uranium to a level needed for fuel on a
research scale - using 164 centrifuges, officials said.
But the breakthrough underlined how difficult it will be for the West
to convince Iran to give up enrichment.
Ahmadinejad made the announcement in a richly appointed hall of one
of Iran's holiest cities in a ceremony clearly aimed at proclaiming
the country's nuclear success.
Speaking before Ahmadinejad, Vice President Gholamreza Aghazadeh -
the nuclear chief - said Iran has produced 110 tons of uranium gas,
the feedstock that is pumped into centrifuges for enrichment. The
amount is nearly twice the 60 tons of uranium hexaflouride, or UF-6,
gas that Iran said last year that it had produced.
Aghazadeh said Iran plans to expand its enrichment program to be able
to use 3,000 centrifuges by the end of the year.
The United States and some European countries accuse Iran of seeking
to develop nuclear weapons, an accusation Tehran denies, saying it
intends only to generate electricity.
The IAEA is due to report to the U.N. Security Council on April 28
whether Iran has met its demand for a full halt to uranium
enrichment. If Tehran has not complied, the council will consider the
next step. The U.S. and Europe are pressing for sanctions against
Iran, a step Russia and China have so far opposed.
McClellan told reporters traveling on Air Force One with
President Bush that Iran's enrichment claims "only further isolate"
Tehran and underscore why the international community must continue
to raise concerns about its suspected ambition to develop nuclear
weapons.
McClellan noted the Security Council clock now running on Iran.
"This is a regime that needs to be building confidence with the
international community," McClellan said. "Instead, they're moving in
the wrong direction."
U.S. Ambassador to the United Nations John Bolton said the
Iranians' announcement "shows that they're not paying any attention
to what the Security Council has said."
"And it shows why we feel a sense of urgency here that we have to
have Iran realize the mistaken course it's pursuing," he told The
Associated Press.
In Vienna, officials of the IAEA, whose inspectors are now in Iran,
declined to comment.
A diplomat familiar with Tehran's enrichment program said the
announcement appeared to be accurate. He demanded anonymity because
he was not authorized to discuss information restricted to the
agency.
The reported breakthrough came only two months after Iran resumed
research on enrichment at its facility in the central town of Natanz
in February. The resumption of work there prompted the IAEA to report
Iran to the U.N. Security Council - escalating the standoff.
The enrichment process is one of the most difficult steps in
developing a nuclear program. It requires a complicated plumbing
network of pipes connecting centrifuges that can operate flawless for
months or years.
The process aims to produce a gas high with an increased percentage
of uranium-235, the isotope needed for nuclear fission, which is much
rarer than the more prevalent isotope uranium 238.
A gas made from raw uranium is pumped into a centrifuge, which spins,
causing a small portion of the heavier uranium-238 to drop away. The
gas then proceeds to other centrifuges - perhaps thousands of them -
where the process is repeated, increasing the proportion of uranium-
235.
The enrichment process can take years to produce a gas rich enough in
uranium-235 that it can be used to power a nuclear reactor or produce
a bomb.
------------------
Nuclear energy facilitates sustainable development: Aqazadeh Mashhad
Apr 12 - (IRNA) The head of Iran's Atomic Energy Organization (IAEO)
Gholam-Reza Aqazadeh said Tuesday Iran achieved nuclear know-how and
has fully paved the way for sustainable progress and development.
Iran has produced uranium enriched 3.5 percent in its Natanz facility
thanks to the efforts of its young talented experts, he said in a
report on Iran's nuclear activities.
"Iran is determined to open its way for civilian use of nuclear
energy with respect to great impacts of nuclear science on
scientific, economic and social development and the sustainable
development in general.
"Generating electricity from nuclear energy is among macro plans of
the Islamic Republic of Iran. Based on a legislation passed by
Majlis, the government is required to produce 20,000 MW electricity
from nuclear energy and build several nuclear power plants.
The IAEO has undertaken to implement the plan in the course of a
specified period.
"A contract was signed and executed in cooperation with Russia to
produce 1,000-MW electricity in the first phase of Bushehr power
plant as part of the plan," he added.
He said, "Construction process of Bushehr power plant by the end of
last Iranian calendar year of 1384 (ended March 20, 2006) showed a
91.9 percent physical progress. We hope the test production will be
launched in the current year.
"The Iranian experts started construction planning of a 360-MW power
plant in line with development of the country's atomic power plants.
Moreover, construction of two 1,000-MW units will be put on
international tender during the current Iranian year.
"The country's increasing need to different radio medicines for
diagnosis and various radioisotopes for industrial and research use
as well as different limitations the country faced in providing these
radioisotopes from foreign suppliers outside the country made the
Iranian officials construct a research reactor to be replaced with an
old reactor.
"The new 40,000 MW heavy water research reactor, known as R-R-40 will
be inaugurated in 2008."
Aqazadeh added, "Self-sufficiency in production of nuclear fuel is
among other macro plans of Iran.
"A decision to construct various nuclear power plants, which are
carried out under full supervision of the International Atomic Energy
Agency (IAEA), urges the Islamic Republic of Iran to work to produce
different nuclear fuel.
"It is obvious, processing of uranium ore into uranium and its
enrichment should be carried out for producing fuel. Iran is active
in all stages of fuel production.
"Bandar Abbas project which was inaugurated during recent weeks by
Iranian experts was an example of Iran's activities to obtain uranium
from natural resources.
"In Saqand project in Yazd, uranium was extracted from a depth of 350-
meter which will turn into yellowcake after different chemical and
physical transitions in Ardekan city, Yazd."
The IAEO head stated, "The UCF project in Isfahan turns yellowcake
into hexa-flouride (UF6) which is metal uranium and uranium oxide.
This UF6 is the main material for enrichment in Natanz.
"What is being done at Natanz is completion of uranium enrichment for
production of nuclear fuel for power plants which use uranium
enriched 3.5 to five percent.
"I have the honor to announce 110 tons of UF6 have been produced at
these important nuclear facilities.
"Iran is now regarded as the eighth country enjoying advanced
technology for uranium-processing facilities."
Aqazadeh added, "Production of heavy water is among most complicated
modern technologies of the world which limited number of countries
have such a capability.
"Primary works of the project began in Iran. Storage of the first
phase of heavy water has been started. Final capacity of this
important project hits 16 tons per year.
"Uranium enrichment technology includes several engineering and basic
know-how which a few countries currently enjoy it. The significance
of this technology led to scientific and industrial improvement of
the country.
"Thanks to the grace of God, inauguration of pilot and the test
process of this complex and its technical and practical know-how are
regarded as the cross border to the advanced know-how.
"This great success in nuclear technology is the result of wise
decisions and policies adopted by high-ranking Iranian officials who
remove suspension from nuclear facilities.
"It showed high peaks of advanced nuclear know-how can be conquered
through resistance against illegitimate demands of others and
confidence of innovative Iranian experts.
Aqazadeh expressed hope that an uranium enrichment complex with a
capacity of 3,000 tons will come on stream by the end of the current
Iranian year (March 20, 2007).
-------------------------------------
Sandy Perle
Senior Vice President, Technical Operations
Global Dosimetry Solutions, Inc.
2652 McGaw Avenue
Irvine, CA 92614
Tel: (949) 296-2306 / (888) 437-1714 Extension 2306
Fax:(949) 296-1144
E-Mail: sperle at dosimetry.com
E-Mail: sandyfl at earthlink.net
Global Dosimetry Website: http://www.dosimetry.com/
Personal Website: http://sandy-travels.com/
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