NO NEED FEARING NUCLEAR POWER
Some people are a bit skeptical of the idea that Kenya is
planning to build its first nuclear plant by 2022 to boost its domestic energy consumption.
In the last concluded 3rd Conference on Nuclear Energy in Africa
held in Kwale, a member of the Departmental Parliamentary Committee on Energy,
Communication and Information Hon. Richard Tongi was quoted saying that Kenya
is not yet ready to have nuclear power.
What are some of the things that makes many people fear
nuclear power? According to a survey done by member of staff at Kenya Nuclear
Electricity Board, majority of Kenyans do not understand the whole meaning
of generation of electricity using
nuclear power. To some, using nuclear power means making of nuclear bomb and
that means preparing for war. However, for a few educated elite groups, their
arguments against nuclear energy are based on its cancerous brought about by
emissions of radioactive radiations from the nuclear power plant reactors.
Others, base their arguments on the probability of nuclear reactors being a
target for terrorist attack.
Generally, a nuclear reactor works by using the energy that
is released when the nucleus of a heavy atom splits. That process is called fission.
In reactors, fission occurs when uranium atoms are hit by slow-moving neutrons.
Absorbing these excess neutrons sometimes causes the atoms to break apart. As
the nucleus splits, it releases energy, in the form of heat. In a boiling water
reactor, this heat becomes steam, which drives turbines to generate the
electricity.
About the fear of cancerous effect, it is true that
radiations released from nuclear reactors can cause cancer. As radioactive material decays, or breaks down, the
energy released into the environment has two ways of harming a body that is
exposed to it. It can directly kill cells, or it can cause mutations to DNA. If
those mutations are not repaired, the cell may turn cancerous as said by Kathryn
Higley, director of the Oregon State University department of nuclear
engineering and radiation health physics.
Nonetheless radioactive emissions is
short-lived and will be around for only about two months after an exposure,
said Andre Bouville of the National Cancer Institute, who has studied
radiation doses from the fallout of the 1986 Chernobyl explosion in
Ukraine. So, if the exposure to the air comes after that time, radioactive
and more specifically iodine, does not pose a health risk, said Bouville. It
also need a huge amount of radiation for it to cause a health risk. For example,
no
increase in cancer rates were observed after the release of radioactive from a
power plant on Three Mile Island in USA in 1979.
Nuclear power
plants routinely produce radioactive gases and liquid wastes during normal
operations. A plant has tanks designed to store gas and liquid radioactive
materials that are generated during normal operation. The radioactive elements
are retained for occasionally before they are used for reaction to reduce the
threat of emission of radioactive radiations. During normal operations,
penetrating radiation emitted from the radioactive materials in the reactor and
in the systems and buildings of the plant are not able to expose someone
outside the boundary of the plant. Nevertheless, in any plant radiation
monitors are placed on the fence line surrounding the site to directly measure
any radiation leakages that might occur.
In countering the terror scare Kenya Nuclear Electricity
Board, executive chair, Hon. Ochilo Ayacko, recently said that the plant
reactors will be designed to withstand the impact of airplanes and bombs just
not to mention the heavily armed security that will be guarding the various
sites. This will happen after the new legislation passed by parliament that
will oversee the board mandated with overseeing operations of the yet to be
established nuclear power plant(s) such as safety, inspection of sites and
issuing of licenses as well as cancellation.
Fukushima
accident also had installed a lot of fear among many governments in starting of
nuclear power plants towards generating of electricity. Climate Change Scientist, James Hansen, says that
the plant at Fukushima was built to withstand only a 3 meter Tsunami using the
old technology that proved to be disastrous. However with the current new
technology, in case of tsunami or earthquake occurrence, the plant can easily
shut down itself and cool down without power, says Hansen. In the case of Fukushima
the reactors could not cool down without the power. This means therefore there
are very minimal risk if any associated with nuclear power compared to
advantages that are more than enough.