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The U.S.
Department of Energy (DOE) has proposed the UREX+ reprocessingtechnology as part
of its Global NuclearEnergy Partnership (GNEP) program. TheUREX+ process would
keep the transuranic elements—plutonium, neptunium, americium,and
curium—together, minimizingwaste and making the separation more
proliferation-resistant than it is in thePUREX process. In general, recycling
of the transuranics turns a potential waste liability into an energy asset.
Here is a revealing expose of the true
situation with the spent nuclear fuel and the waste that is misrepresented by
most critics of the nuclear power industry. It shows that the waste problem is
no problem at all. The article was written by a co-worker and colleague of mine,
Ed Sayre. Ed is also chairman of the group of engineers of the organization
ACRES (Advocates for Clean Responsible Energy).
It is a must read for all interested in the
future of energy in the world.
The bottom line to this nuclear waste problem
is summed up by the following statement:
If all the
energy used by the people of California for all electricity, commercial, heating
and transportation, etc. were generated by nuclear energy the amount of nuclear
fission product waste per citizen of California would be the size of an M & M
candy bar. There is no other source of energy more environmentally
friendly than that. This can be safely vitrified and stored.
If you are truly worried about global
warming, nuclear power is the answer.
The U.S.
Department of Energy (DOE) has proposed the UREX+ reprocessingtechnology as part
of its Global NuclearEnergy Partnership (GNEP) program. TheUREX+ process would
keep the transuranic elements—plutonium, neptunium, americium,and
curium—together, minimizingwaste and making the separation more
proliferation-resistant than it is in thePUREX process. In general, recycling
of the transuranics turns a potential waste liability into an energy asset.
Obama dumps Yucca Mountain
Disposing of radioactive waste at Yucca Mountain has all but
stopped after President Barack Obama's budget blueprint yesterday. A new
strategy for permanent storage is to be developed.
The confirmation came with the following words from the
Department of Energy: "The Yucca Mountain program will be scaled back to those
costs necessary to answer inquiries from the Nuclear Regulatory Commission
(NRC), while the administration devises a new strategy toward nuclear waste
disposal." An application to build the Yucca store was lodged with the NRC in
June last year, and this confirmation that NRC will continue to examine it
indicates that Yucca will remain on the table for consideration at least until a
firm strategy is announced. The move remains basically in line with Obama's
pre-election statements that Yucca Mountain was "not an option."
America must now set a new course for long-term management of
high-level radioactive waste, which could include reprocessing and recycling
after a change in attitude towards the practices during recent years. A major
factor could be Obama's position on the Global Nuclear Energy Partnership (GNEP),
which would see a community of countries share nuclear power technology with
leading nations storing all the high-level waste from the entire group after
dramatic volume reduction in advanced reactors.
My comment: maybe Obama is not totally out
of nuclear. At least this move may turn out to be the answer.
Before you read this page
I will put up a recent press release, The house will not fund a
facility to convert plutonium to MOX fuel for conventional power reactors.
U.S.,
Russia
reach deal
on
plutonium
WASHINGTON - The United States and Russia
have resolved a major hurdle in their
negotiations to dispose of tons of excess plutonium, announcing
an accord Friday on a liability issue
that has long
stymied the program
The two countries signed a protocol
that provides a framework for dealing with
liability, the Energy Department announced.
But other issues remain to be worked
out, including details on how Russia is
going to dispose of 34 metric tons of
plutonium from its weapons
stockpile under the agreement.
At the same time, the future of the U .S disposal
program also
has become clouded. The Energy Department said it is ready to break
ground
this fall on a South Carolina plant that would convert
its 34 metric tons of excess plutonium into a
mixed oxide,
or MOX, fuel to be burned in a commercial
power reactor.
However, the U S House of representatives has
eliminated funding for the program for the
fiscal year beginning Oct. 1.
Future funding for the MOX conversion plant
to be built at the Savannah
River complex near
Aiken, S.C.; will depend on whether Congress
restores the money.
Among those
issues is to resolve how Russia
will dispose of its 34 tons
of plutonium. Russia re recently said it did not want to convert
the plutonium to MOX fuel - like the U.S. plan - but to
burn it in a high-speed reactor.
Critics have said that could lead to proliferation since such a reactor
also can be designed as a
so-called "Breeder" that produces
plutonium.
A True Knowledge of
Used “Spent” Nuclear Fuel"
By Edwin D. Sayre 2-21-2006
Introduction: Most people
think that used or “spent” nuclear fuel is a very dangerous material that should
be safely stored away forever. This public view and the view of many
politicians have been generated by the anti-nuclear organizations to help
prevent the use of nuclear energy and technology. In the early days of
nuclear research Atomic Energy Commission and the military promoted this fear as
an auxiliary aid in security for weapons materials. Fear of radioactive
material has also been used to promote security for government nuclear weapons
facilities. In order to get the public to agree with having the US move
into the peaceful nuclear economy and to live near nuclear power plants and have
new and used nuclear fuel transported through their neighborhoods they must
learn the truth about radiation and nuclear fuels.
Before Starting we Should Understand What Isotopes Are:
The earth is made of atoms. Atoms are made
of neutrons and protons in the nucleus and electrons making an outer shell.
There are 96 types of atoms called elements, such as iron, oxygen, carbon,
hydrogen etc. Every element is made up of several different atoms with
different numbers of neutrons but the same number of protons and electrons.
These different atoms of each element are called isotopes. Twenty-nine
elements have natural radioactive isotopes. Uranium 235 is the one that
makes nuclear energy work. Potassium 40 is the most powerful radioactive
isotope.
What is Nuclear
Fuel? Nuclear fuel is the material that
is put in the core of a nuclear reactor. It is capable of emitting
neutrons and it is also capable of absorbing neutrons and becoming unstable so
that it splits into elements of lesser mass and many free neutrons which keep
the nuclear reaction going.. This splitting of the U235 is called fission
and the elements of lesser mass are called fission products. When it splits it
also gives off large quantities of heat energy that is used to boil water to
produce steam to turn turbo-generators that produce electrical energy.
Nuclear power plant fuel is rock-hard, very stable; uranium oxide pellets
encapsulated in 10 feet long ˝ inch diameter zirconium metal tubes. It is
made up of uranium isotope 238 and is enriched with 4 to 5 percent uranium
isotope 235.which is the isotope that splits in the fission reaction.
Contrary to what most people believe these uranium isotopes are very stable with
very low radioactivity compared with other naturally radioactive elements such
as potassium. Nuclear power plant fuel is one of the safest materials that is
transported through our neighborhoods compared with gasoline, liquefied natural
gas, acids, alkalis, organic solvents, insecticides, etc. Keep in mind
that a truck load of bananas, which contain potassium going through your
neighborhood to the grocery store gives off more radioactivity than a truck load
of nuclear fuel going to the nearest nuclear plant.
How Does This
Very Stable Fuel Work in The Reactor? If
this fuel is so stable how do we get these atoms to break down, fission, and
give off the heat energy in the power plant reactor? The technique to make this
happen is to put the fuel together in a configuration called a critical mass and
to provide a water environment, called a moderator, that controls the free
neutron’s energy so it is easy for the fissile-atoms to absorb them and split or
fission giving off more neutrons and heat energy. The uranium235 isotopes decay
at a high enough rate to provide some free neutrons to start the chain
reaction.. As the uranium 235 isotopes start splitting and giving off a lot of
neutrons the reaction speeds up until it gets to what is called critical and the
chain reaction can continue at a constant rate.
There are four things that can stop the chain reaction,
-
1. The volume of the fuel can expand thereby losing the critical mass,
-
2. By inserting a neutron absorbing material,
-
3 By draining out the water and
-
4. By using up too much of the fissile uranium235. When the amount
of the fissile isotope is below a useful level the used or “spent” fuel must be
replaced
What is used
nuclear fuel? When used fuel is
taken from the reactor only 3 to 4% of the total uranium is used which means
about 75% of the original fissile uranium 235 atoms have been fissioned (split
into smaller atoms). This material called (spent fuel, nuclear waste,
deadly waste, long term waste, highly radioactive waste and other unreal names)
is taken out of the reactor and stored for reprocessing. The used fuel pellets
contain most of the original U238, about 25 percent of the original U235 and
some other uranium isotopes and transuranic elements. Transuranic elements
are elements that are heavier than uranium such as plutonium, americium,
neptunium and curium. All of the isotopes of these transuranic elements
are either fissile or can easily become fissile if put back into the reactor in
recycled fuel after reprocessing. Fissile means they can decay and give
off neutrons and they also can absorb neutrons and split into smaller atoms
while giving off many neutrons and heat like uranium 238. By chemical
reprocessing the used fuel to separate out the fission products and reloading
the uranium and fissionable transuranic elements back into the reactor the
fissionable isotopes become an asset, not a liability. Many nations using
nuclear energy for electric power plants have come to understand this valuable
approach for the use of spent
fuel.
What To Do With
Fission Products? If we recycle
everything back into the new fuel going back into the reactor except the fission
products, what do we do with the fission products? One metric ton of
used nuclear fuel contains about 77pounds or 35 kilograms of fission products.
After fifty years of storage & decay, over half of the fission products are just
natural non-radioactive elements such as molybdenum, barium, cerium and
praseodymium These are rare metals with commercial value. Twenty five percent of
the fission products are natural elements with natural radioactive isotopes such
as rubidium, tellurium, lanthanum and neodymium. These valuable metals can be
separated out for commercial use with advanced chemical and
electro-metallurgical processes.
This leaves 16 pounds of
radioactive fission products to be further processed. About half of these such
as technetium 99, cesium 137 and strontium 90 also have commercial value.
Technetium 99, which has very low radioactivity, has some unique metallurgical
alloying potential. Cesium 137 and strontium 90 yield high quantities of
heat with their decay and can make ideal small electric power sources for remote
usage.
This leaves us with just 8
pounds of radioactive fission product waste per each metric ton of used fuel to
deal with. Forty percent of this fission product waste is palladium 107
with very low radioactivity but with 6.5 million years half-life. Most of
the other eleven isotopes have higher radiation energy but very short, a few
years, half-life. The isotope with the greatest problem is iodine 129 with
a 16 million year half-life. The ideal way to handle this waste is to separate
the short lived elements and store them for about 200 years for complete decay
to non-radioactive elements. The long-lived ones such as the palladium and
iodine are packaged in the proper neutron moderating materials and placed back
into the reactors to be transmuted to either short lived or non-radioactive
elements. This will permit all of the decayed fission products to be put
back into the environment in 200 years with no harm.
How Much Waste
to be Transmuted And Stored For a Short Time is Generated?
If all the energy used by the
people of California for all electricity, commercial, heating and transportation
were generated by nuclear energy the amount of nuclear fission product waste per
citizen of California would be the size of an M & M candy. There is no
other source of energy more environmentally friendly than that.
The answer to the waste storage
problem, which is holding up nuclear power development, is to recycle the waste.
We have developed, at Idaho National Labs (INL), a less
costly, cleaner, and more effective nuclear waste reprocessing system than those
currently in use by the British, French, Russians, and Chinese. If we reprocess
and reuse the uranium, residue, we end up with waste that has a half-life of 30
years and a
storage requirement of only 300 years. We also reduce he amount needed
to be stored by 95%. That waste can be stored on-site.
This process requires the re-construction of a fast burner
reactor (we
had two until the Clinton administration) and the construction of an
industrial scale electro-metallurgical reprocessing facility. We have
had an engineering scale facility at INL for the last 11 years. The last
link in the reprocessing and reuse cycle is to create new fuel rods with
the plutonium and other fissionable products extracted in the reprocessing.
We are already making these mixed oxide (MOX) fuel rods using the leftover
weapons-grade plutonium and uranium from our and the Soviet Union's cold war
stockpiles.
The INL process has just been bought into by the South Koreans and they
plan to set up the entire process within 5 years.
If we reprocess and reuse the spent nuclear fuel rods, Yucca
Mountain
becomes irrelevant and we get started replacing our old nuclear power
plants and building safer, more efficient new ones.
John Scire, PhD Adjunct Professor Energy Policy
University of Nevada, Reno
DOE still moving ahead with
plant: The Department of Energy requested an additional $170 million over last
year's $80 million to start the nuclear recycling center process
Creating about 5,000 construction jobs,
the recycling plant would cut up nuclear fuel rods and chemically treat 2,000 to
3,000 metric tons of spent fuel annually starting in about 2020. It would
separate spent nuclear fuel into reusable and waste components and then make
new nuclear fast reactor fuel from the reusable material.
Two other planned projects, which may or
may not be built at recycling plant site, are:
--A reactor to destroy long-lived
radioactive elements in the new fuel while generating electricity.
--A facility to research and develop spent
nuclear fuel recycling processes and other advanced nuclear fuel cycles.
I hope this goes.
The democrats usually kill all nuclear fuel recycling activities and then howler
about the waste
The YUCCA Mountain Storage Facility
By Malcolm Rawlingson
Those against
nuclear power plants like to refer to the spent fuel as "nuclear waste" because
it creates the image they want to portray of a profligate wasteful industry
discarding nuclear materials and resources in an unregulated manner. The
complete opposite of course is true in that this material is the most heavily
regulated controlled and protected industrial by-product in the world - bar
none.
So waste it most
definitely is not. Less than 2.5% of the available energy has been extracted
from this used fuel so the recycling opportunities are enormous.
Think about it.
The US has operated 100 reactors for about 25 years using only 2.5% of the
energy in the already mined and processed fuel. That means the energy in the
existing fuel sitting at nuclear plants across America is enough to operate 40
times that number of reactors for 25 years without ever mining another ounce of
Uranium.
Sure it will
take some energy to reprocess and maybe we could not get 100% of the available
energy out but even if we got 25% of the available energy out it would still be
well worth the effort.
Surely that is
the recycling opportunity of a lifetime. Discarding it in Yucca is both
expensive and totally unnecessary and the technology for reprocessing the spent
fuel into new fuel is already developed and available.
Burying it or
otherwise making this energy source inaccessible to future generations is about
as dumb an idea as I could imagine. Who in their right mind would shutdown
an oil well with only 97.5% of the available fuel still in the ground? But the
anti nukes have convinced us that this stuff is so dangerous that we need to
bury it for a million years. It is not that dangerous (the risks are greatly
exaggerated) and it is a vast fuel source for producing emissions free
electricity for many years.
Nuclear Waste
Storage Requirements.
Below is a peace
written by Carl Walters and Per Peterson
One of the major needs for long lived storage comes from
the long half life of the actinides and a few fission products.
We should be returning all of the actinides back into the
reactors in recycled fuel.
One metric ton of used fuel contains about 77 pound, 35
kilograms of fission products. After fifty years of storage and decay,
over half of the fission products are just natural non-radioactive elements
such as molybdenum, barium, cerium and praseodymium. These are rare
metals with high commercial value. There is a political opinion that
any waste product must remain a waste product. This is nonsense. I
have been involved in recovering technecium from the Hanford wastes at a high
purity so it can be a commercial product. Japan has a very good program
going to separate out valuable fission product commercial elements. I
believe they can be recovered at a cost that will make them safe
and competitive in their markets. Half of the remaining fission products
are natural elements with natural radioactive isotopes such as rubidium,
tellurium,lanthanum and neodymium. These vakuabke rare metals also. We
should get them ou t and use them.
This leaves 16 Kg. of radioactive fission products to be
further processed. About half of these such as technetium 99, cesium 137
and strontium 90 also have commercial valur.Technetium 99, which has very low
radioactivity, has some unique metallurgical alloying potential, since it is a
sister element to rhenium. Cesium 137 and strontium 90 yield high
quantities of heat with their decay and can be ideal for small electric power
sources for remote usage.
This leaves us with just 8 Kg. of radioactive fission
product waste per each metric tone of used fuel to deal with.
Forty percent of this fission product waste is palladium 107 with a very low
radioactivity but with 6.5 billion years half-life. Most of the other
eleven isotopes have high radiation energy but very short half-lives, just a
few years. The isotope with the greatest problem is iodine 129 with 16
million years half-life. The ideal way to handle this waste is to
separate the short lived elements and store them for about 200 years for
complete decay to non-radioactive elements. The long lived ones such as
the palladium and iodine can be packaged in the proper neutron moderating
materials and placed back into the outer areas of the reactors to be
transmuted to either short lived or non-radioactive elements. This will permit
all of the decayed fission products to be put back into the environment in
about 200 years with no harm.&nb sp; If all the energy used by the people
in the U. S. were generated with nuclear fission the amount of waste we would
have to store for 200 years until it is no longer radioactive waste would be
the size of one M&M candy per person.
My
comment: Nuclear waste is not nearly as bad as the anti-Nukes would have
us believe.
If we can keep Jimmy Carter
out of this we may be able to recycle spent fuel from existing power
reactors.
Recent announcement:
The U.S. is moving from a once
through fuel cycle to a new approach that includes recycling of spent
nuclear fuel without separating out pure plutonium. This capability would
employ advanced technologies to increase proliferation resistance, recover
and reuse fuel
resources, and reduce the amount of wastes
requiring permanent geological disposal at Yucca Mountain. This work builds
on the Department of Energy's Advanced Fuel Cycle Initiative, which has been
researching innovative recycle concepts since 2000.
Used nuclear fuel contains uranium, transuranic
elements (plutonium and other long-lived radioactive material) and fission
products. The fission products are waste and make up less than 5 percent of
the used fuel. The buildup of the fission products inhibits the nuclear
fission reaction, so used fuel must be removed from a nuclear power plant.
Under the Global Nuclear Energy Partnership (GNEP),
recycling would comprise uranium extraction plus (UREX+) that would accomplish
the following:
Separate uranium from the spent fuel at a very high level of purification
that would allow it to be recycled for re-enrichment, stored in an unshielded
facility or simply buried as a low-level waste.
Separate and immobilize long-lived fission products, technetium and iodine,
for disposal in Yucca Mountain.
Extract short-lived fission products, cesium and strontium, and prepare them
for decay storage until they meet the requirements for disposal as low-level
waste.
Separate transuranic elements (plutonium, neptunium, americium and curium)
from the remaining fission products so they could be fabricated into fuel for
an Advanced Burner Reactor, a fast reactor.
T o consume, or destroy,
transuranic elements while recovering their energy content, they must be
separated from the uranium and fission products and then be fabricated into
new fuel. Fast reactors would consume these transuranics, eliminating the need
for their disposal in Yucca Mountain. This approach would potentially increase
the effective capacity of the geologic repository by an estimated factor of 50
to 100.
Epilogue
When you hear the constant drone from the
environmentalists about how we cannot contend with the nuclear fuel waste you
will be assured that they are wrong. A lie told repeatedly
does not become factual.
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