What is Radioactive Pollution

8/6/2019 What is Radioactive Pollution

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WHAT IS RADIOACTIVE POLLUTION?

The radioactive pollution is defined as the physical pollution of air, water and the otherradioactive materials. The ability of certain materials to emit the proton, gamma rays andelectrons by their nuclei is known as the radioactivity. The protons are known as thealpha particle and the electrons are also known as the beta particle. Those materials areknown as the radioactive elements. The environmental radiations can be from differentsources and can be natural or manmade. The natural radiations are also known as thebackground radiations. In this the cosmic rays are involved and reach the surface ofearth from space. It includes the radioactive elements like radium, uranium, thorium,radon, potassium and carbon. These occur in the rock, soil and water. The man maderadiations include the mining and refining of plutonium and thorium. This production andexplosion of nuclear weapons include the nuclear fuels, power plants and radioactiveisotopes. The first atom bomb was exploded in the Japan in the year 1945. It affected theHiroshima and Nagasaki cities. It adversely affected the flora, fauna and humans of thatarea. In spite of these destructions the nuclear race is still going on between differentnations. The nuclear arms are tested with the production of nuclear weapons. Theradioactive elements are produced in the environment and affect other materials also. Itincludes the strontium, radium and iodine. The gases and particles are produced by theradioactive materials. They are carried by the wind and the rain brings down theradioactive particles to the ground which is referred as nuclear fallout. The soil transfersthese radioactive substances to the plants and ultimately they reach the human bodyand cause many side effects. The iodine may affect the white blood cells, bone marrow,spleen, lymph, skin cancer, sterility, eye and damage to the lung. The strontium has theability to aggregate in the bones and form a bone cancer and leads to tissuedegeneration. The radioactive materials are passed through the land to water and causean adverse effect on the aquatic animals. They reach to human through the food chain.

The nuclear power generates a lot of energy which is used to run turbines and produceselectricity. The fuel and the coolant produce a large amount of pollution in theenvironment. The atomic reactors are also rich in the radioactive materials. Therebiggest problem is in their disposal and if they are not properly disposed they can harmthe living organisms. If they escape they can cause a hell lot of destruction. The gasesescape as a vapor and cause pollution on the land and water. The use of radioactiveisotopes is multipurpose. They are of a great scientific value and they may be present inthe waste water. From these water resources they reach to the human body via foodchain. The people who work in power plants have more chances of the exposure toharmful radiations. The human beings also receive the radiation and radiotherapy fromthe x rays.

CAUSES OF RADIATIOACTIVE POLLUTION

The radiation pollution causes are various human activities, that add to natural radiation background (radiation

produced everywhere in the Universe in absence of human activities).


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Sources of Radiation Pollution

The sources of radiation pollution involve any process that emanates radiation in the environment. While there are

many causes ofradiation pollution(including research and medical procedures and wastes, nuclear power plants,

TVs, computers, radio waves, cell-phones, etc.), the most common ones that can pose moderate to serious health

risks include:

Nuclear explosions and detonations of nuclear weapons probably the highest amounts of human-

induced radiation pollution have been generated in the mid twenty century through various experimental or

combat nuclear detonations (that ended the Second World War).

Defense weapon production may also release radioactivity from the handled radioactive materials

(usually of high health risks). However, unless accident occurs, the current standards will not allow the

release of any significant amount of radiation.

Nuclear waste handling and disposal may generate low to medium radiation over long period of times.

The radioactivity may contaminate and propagate through air, water, and soil as well. Thus, their effects may

not be easily distinguishable and are hard to predict. Additional, some nuclear waste location may not be

identified. The main issue with the radiation waste is the fact that it cannot be degraded or treated

chemically or biologically. Thus, the only options are to contain the waste by storing it in tightly closed

containers shielded with radiation-protective materials (such as Pb) or, if containing is not possible, to dilute

it. The waste may also be contained by storage in remote areas with little or no life (such as remote caves or

abandoned salt mines). However, in time, the shields (natural or artificial) may be damaged. Additionally, the

past waste disposal practices may not have used appropriate measures to isolate the radiation. Thus, such

areas need to be carefully identified and access restrictions promptly imposed.

Mining of radioactive ores (such as uranium ores) involve the crushing and processing of radioactive ores

and generate radioactive by-products. Mining of other ores may also generate radioactive wastes (such as

mining of phosphate ores).

Nuclear accidents an already classic example of such accident is the nuclear explosion at a former

Soviet nuclear power plant from Chernobyl that occurred in the mid 1986. Its effects are still seen today.

Another example is the 1979 explosion at Three Mile Island nuclear-power generating plant near Harrisburg,

PA. The general problems at nuclear weapons reactors are other examples of this type of sources of

radiation pollution. Even accidents from handling medical nuclear materials/wastes could haveradiation

health effectson workers.

EFFECTS OF RADIOACTIVE POLLUTION

The radiation pollution effects vary depending on the amount of radiation to which we are exposed and onthe sensitivity of each exposed individual. Thus, while exposure to high amounts of radiation almostalways generate serious diseases (cancer is the most common radiation-induced disease) or immediatedeath, serious life-threatening diseases may develop even from exposure to small amounts of radiation

but, in general, over long periods of time, especially in sensitive individuals (the genetic inheritanceplays an important role in how sensitive an individual may be to radiation pollution). This is why there isno safe exposure limit toradiation pollution.

Exposure to High Amounts of Radiation - Radiation Pollution and Cancer

Cancer generation is the most typical health effect of radiation exposure, especially when high or moderate

amounts of radiation are involved (in general regardless of the exposure period). Lung canceris a typical example of
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the effect of exposure to radon, which is the second leading cause of lung cancerin the U.S. (please note that the

risk of developing lung cancer increases with smoking).

Thyroid tumors / cancermay also develop due to the effect of radioactive iodine that accumulates in the thyroid.

This is why, when radiation accident occurs, the intake of non-radioactive dose of iodine is taken as precaution in

order to leave no space for the radioactive iodine to bind and accumulate.

Skin cancermay also develop as a result to prolonged UV exposure at tanning saloons and/or beaches, especially

since the ozone layer gets weaker in protecting us.

The many years ofmonitoring of radiation effects from detonation of nuclear bombs in Japan in 1940s, showed

that cancers may develop immediately following the exposure to radiation or after shorter or longer periods (up to 30

years from the exposure) of time since the exposure occurred.

Exposure to Low Amounts of Radiation over Long Periods of Time

The health effects of exposure to low amounts of radiation over longer times are not well-known, but the genetic

material may be threatened through mutations with unpredictable overall effects. Thus, genetic birth defects and

retardation are possible due to parent exposures. Also otherhealth problems may develop affecting the

neurological, reproductive or cardiac systems. These may or may not be followed by cancer. Other factors may

influence the development of diseases due to radiation.

Hypothyroidism may also be aradiation cause due to the destruction of thyroid gland by radioactive accumulated

iodine.

HOW TO CONTROL RADIOACTIVE POLLUTION AND PREVENT EXPOSURE?

Radiation Pollution Control can be done at various levels, including the handling and treatment of radiation waste,

the control and mitigation of nuclear accidents, as well as the control and minimization of personal exposure to

radiation at an individual level.

Treatment of radiation waste cannot be done through degradation by chemical or biological processes. Additionally,

many radioactive materials have very long half-times (time necessary for half of the material to degrade or transform

into non-radioactive materials) and thus radiation waste may pose a risk for many years after it was produced.

Basically, there are only few options for radiation waste treatment involving:

Containment of the waste in radiation-shielded containers usually buried under ground

Isolation of radiation waste in remote locations such as remote caves or abandoned mines - which may

also involve the use of some kind of barriers (shields),

When the first two alternatives are not possible, the waste may be diluted till background values are

achieved.
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Heat and Radiation Pollution basically radiation is a method of heat transfer. While radiation may be

generated in any conditions, the heat increases the amount of radiation and thus may increase the health risk. For

example, radiation is concentrated in the ash due to burning processes. Also, the higher the heat, the higher the

energy of radiation produced (e.g., UV rays are produced by hot bodies such as the sun). This is why radiation

waste should be stored in cold places, away from any heating source.

Law Enforcement for Radiation Pollution Control in the U.S., environmental standards designed tom protect

human health from radiation are issued by EPA along with guidance for federal agencies related to radiation

exposure standards/limits. The Nuclear Regulatory Commission (NRC) is the federal agency responsible to

implement some of the EPAs regulation and standards. The Department of Energy (DOE) implements the standards

at their facilities.

At individual levels, there are measures you may take to prevent and/or reduce radiation pollutionthat may affect

you and your family. Here are some examples:

First, testing of your home for radon may be done by each person using inexpensive testing kits or by

specialized consulting services. If radiation seems to be an issue (a higher than background value of radonin home is found), a preferred radon reduction technique is the installation of a special system called

active soil depressurization (ASD). This system contains a vent pipe with an inline centrifugal fan that

operates continuously to vent radon and other intruding gases from beneath the house. Thus, the system

may be efficient to block the intrusion into homes not only of radon, but also of other toxic chemicals (non-

radioactive) that may get from the subsurface into indoor breathing air.

Choosing an appropriate location for your home away from the main radiation pollution sources;
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What is Radioactive Pollution