Nuclear weapons |
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Nuclear-armed states |
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Nuclear ethics is a cross-disciplinary field of academic and policy-relevant study in which the problems associated with nuclear warfare, nuclear deterrence, nuclear arms control, nuclear disarmament, or nuclear energy are examined through one or more ethical or moral theories or frameworks. [1] [2] [3] In contemporary security studies, the problems of nuclear warfare, deterrence, proliferation, and so forth are often understood strictly in political, strategic, or military terms. [4] In the study of international organizations and law, however, these problems are also understood in legal terms. [5] Nuclear ethics assumes that the very real possibilities of human extinction, mass human destruction, or mass environmental damage which could result from nuclear warfare are deep ethical or moral problems. Specifically, it assumes that the outcomes of human extinction, mass human destruction, or environmental damage count as moral evils. Another area of inquiry concerns future generations and the burden that nuclear waste and pollution imposes on them. Some scholars have concluded that it is therefore morally wrong to act in ways that produce these outcomes, which means it is morally wrong to engage in nuclear warfare. [6]
Nuclear ethics is interested in examining policies of nuclear deterrence, nuclear arms control and disarmament, and nuclear energy insofar as they are linked to the cause or prevention of nuclear warfare. Ethical justifications of nuclear deterrence, for example, emphasize its role in preventing great power nuclear war since the end of World War II. [7] Indeed, some scholars claim that nuclear deterrence seems to be the morally rational response to a nuclear-armed world. [8] Moral condemnation of nuclear deterrence, in contrast, emphasizes the seemingly inevitable violations of human and democratic rights which arise. [9]
The application of nuclear technology, both as a source of energy and as an instrument of war, has been controversial. [10] [11] [12] [13]
Even before the first nuclear weapons had been developed, scientists involved with the Manhattan Project were divided over the use of the weapon. The role of the two atomic bombings of the country in Japan's surrender and the U.S.'s ethical justification for them has been the subject of scholarly and popular debate for decades. The question of whether nations should have nuclear weapons, or test them, has been continually and nearly universally controversial. [14]
The public became concerned about nuclear weapons testing from about 1954, following extensive nuclear testing in the Pacific Ocean. In 1961, at the height of the Cold War, about 50,000 women brought together by Women Strike for Peace marched in 60 cities in the United States to demonstrate against nuclear weapons. [15] [16] In 1963, many countries ratified the Partial Test Ban Treaty which prohibited atmospheric nuclear testing. [17]
Some local opposition to nuclear power emerged in the early 1960s, [18] and in the late 1960s some members of the scientific community began to express their concerns. [19] In the early 1970s, there were large protests about a proposed nuclear power plant in Wyhl, Germany. The project was cancelled in 1975 and anti-nuclear success at Wyhl inspired opposition to nuclear power in other parts of Europe and North America. Nuclear power became an issue of major public protest in the 1970s. [20]
Between 1949 and 1989, over 4,000 uranium mines in the Four Corner region of the American Southwest produced more than 225,000,000 tons of uranium ore. This activity affected a large number of Native American nations, including the Laguna, Navajo, Zuni, Southern Ute, Ute Mountain, Hopi, Acoma and other Pueblo cultures. [21] [22] Many of these peoples worked in the mines, mills and processing plants in New Mexico, Arizona, Utah and Colorado. [23] These workers were not only poorly paid, they were seldom informed of dangers nor were they given appropriate protective gear. [24] The government, mine owners, scientific, and health communities were all well aware of the hazards of working with radioactive materials at this time. [25] [26] Due to the Cold War demand for increasingly destructive and powerful nuclear weapons, these laborers were both exposed to and brought home large amounts of radiation in the form of dust on their clothing and skin. [27] Epidemiologic studies of the families of these workers have shown increased incidents of radiation-induced cancers, miscarriages, cleft palates and other birth defects. [28] The extent of these genetic effects on indigenous populations and the extent of DNA damage remains to be resolved. [29] [30] [31] [32] Uranium mining on the Navajo reservation continues to be a disputed issue as former Navajo mine workers and their families continue to suffer from health problems. [33]
Over 500 atmospheric nuclear weapons tests were conducted at various sites around the world from 1945 to 1980. Radioactive fallout from nuclear weapons testing was first drawn to public attention in 1954 when the Castle Bravo hydrogen bomb test at the Pacific Proving Grounds contaminated the crew and catch of the Japanese fishing boat Lucky Dragon . [17] One of the fishermen died in Japan seven months later, and the fear of contaminated tuna led to a temporary boycotting of the popular staple in Japan. The incident caused widespread concern around the world, especially regarding the effects of nuclear fallout and atmospheric nuclear testing, and "provided a decisive impetus for the emergence of the anti-nuclear weapons movement in many countries". [17]
As public awareness and concern mounted over the possible health hazards associated with exposure to the nuclear fallout, various studies were done to assess the extent of the hazard. A Centers for Disease Control and Prevention/ National Cancer Institute study claims that fallout from atmospheric nuclear tests would lead to perhaps 11,000 excess deaths amongst people alive during atmospheric testing in the United States from all forms of cancer, including leukemia, from 1951 to well into the 21st century. [46] [47] As of March 2009, the U.S. is the only nation that compensates nuclear test victims. Since the Radiation Exposure Compensation Act of 1990, more than $1.38 billion in compensation has been approved. The money is going to people who took part in the tests, notably at the Nevada Test Site, and to others exposed to the radiation. [48] [49]
Nuclear labor issues exist within the nuclear power industry and the nuclear weapons production sector that impact upon the lives and health of laborers, itinerant workers and their families. [50] [51] [52] This subculture of frequently undocumented workers (e.g., Radium Girls, the Fukushima 50, Liquidators, and Nuclear Samurai) do the dirty, difficult, and potentially dangerous work shunned by regular employees. [53] When they exceed their allowable radiation exposure limit at a specific facility, they often migrate to a different nuclear facility. The industry implicitly accepts this conduct as it can not operate without these practices. [54] [55]
Existent labor laws protecting worker's health rights are not properly enforced. [56] Records are required to be kept, but frequently they are not. Some personnel were not properly trained resulting in their own exposure to toxic amounts of radiation. At several facilities there are ongoing failures to perform required radiological screenings or to implement corrective actions.
Many questions regarding these nuclear worker conditions go unanswered, and with the exception of a few whistleblowers, the vast majority of laborers – unseen, underpaid, overworked and exploited, have few incentives to share their stories. [57] The median annual wage for hazardous radioactive materials removal workers, according to the U.S. Bureau of Labor Statistics is $37,590 in the U.S – $18 per hour. [58] A 15-country collaborative cohort study of cancer risks due to exposure to low-dose ionizing radiation, involving 407,391 nuclear industry workers, showed significant increase in cancer mortality. The study evaluated 31 types of cancers, primary and secondary. [59]
Nuclear power is a potential target for terrorists, such as ISIL, and also increases the chances of nuclear weapons proliferation. [60] Circumventing those problems involves reducing civil liberties, such as freedom of speech and of assembly, and so social scientist Brian Martin says that "nuclear power is not a suitable power source for a free society". [61]
The Advisory Committee on Human Radiation Experiments (ACHRE) was formed on 15 January 1994, by President Bill Clinton. Hazel O'Leary, the Secretary of Energy at the U.S. Department of Energy called for a policy of "new openness", initiating the release of over 1.6 million pages of classified documents. These records revealed that since the 1940s, the Atomic Energy Commission was conducting widespread testing on human beings without their consent. Children, pregnant women, as well as male prisoners were injected with or orally consumed radioactive materials. [62]
Background radiation is a measure of the level of ionizing radiation present in the environment at a particular location which is not due to deliberate introduction of radiation sources.
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion reactions, producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter.
Nuclear fallout is the residual radioactive material propelled into the upper atmosphere following a nuclear blast, so called because it "falls out" of the sky after the explosion and the shock wave has passed. It commonly refers to the radioactive dust and ash created when a nuclear weapon explodes. The amount and spread of fallout is a product of the size of the weapon and the altitude at which it is detonated. Fallout may get entrained with the products of a pyrocumulus cloud and fall as black rain. This radioactive dust, usually consisting of fission products mixed with bystanding atoms that are neutron-activated by exposure, is a form of radioactive contamination.
Nuclear technology is technology that involves the nuclear reactions of atomic nuclei. Among the notable nuclear technologies are nuclear reactors, nuclear medicine and nuclear weapons. It is also used, among other things, in smoke detectors and gun sights.
A nuclear and radiation accident is defined by the International Atomic Energy Agency (IAEA) as "an event that has led to significant consequences to people, the environment or the facility." Examples include lethal effects to individuals, large radioactivity release to the environment, or a reactor core melt. The prime example of a "major nuclear accident" is one in which a reactor core is damaged and significant amounts of radioactive isotopes are released, such as in the Chernobyl disaster in 1986 and Fukushima nuclear disaster in 2011.
Nuclear fission products are the atomic fragments left after a large atomic nucleus undergoes nuclear fission. Typically, a large nucleus like that of uranium fissions by splitting into two smaller nuclei, along with a few neutrons, the release of heat energy, and gamma rays. The two smaller nuclei are the fission products..
Castle Bravo was the first in a series of high-yield thermonuclear weapon design tests conducted by the United States at Bikini Atoll, Marshall Islands, as part of Operation Castle. Detonated on March 1, 1954, the device remains the most powerful nuclear device ever detonated by the United States and the first lithium deuteride-fueled thermonuclear weapon tested using the Teller-Ulam design. Castle Bravo's yield was 15 megatons of TNT [Mt] (63 PJ), 2.5 times the predicted 6 Mt (25 PJ), due to unforeseen additional reactions involving lithium-7, which led to radioactive contamination in the surrounding area.
The Windscale fire of 10 October 1957 was the worst nuclear accident in the United Kingdom's history, and one of the worst in the world, ranked in severity at level 5 out of 7 on the International Nuclear Event Scale. The fire was in Unit 1 of the two-pile Windscale site on the north-west coast of England in Cumberland. The two graphite-moderated reactors, referred to at the time as "piles," had been built as part of the British post-war atomic bomb project. Windscale Pile No. 1 was operational in October 1950, followed by Pile No. 2 in June 1951.
Iodine-131 is an important radioisotope of iodine discovered by Glenn Seaborg and John Livingood in 1938 at the University of California, Berkeley. It has a radioactive decay half-life of about eight days. It is associated with nuclear energy, medical diagnostic and treatment procedures, and natural gas production. It also plays a major role as a radioactive isotope present in nuclear fission products, and was a significant contributor to the health hazards from open-air atomic bomb testing in the 1950s, and from the Chernobyl disaster, as well as being a large fraction of the contamination hazard in the first weeks in the Fukushima nuclear crisis. This is because 131I is a major fission product of uranium and plutonium, comprising nearly 3% of the total products of fission. See fission product yield for a comparison with other radioactive fission products. 131I is also a major fission product of uranium-233, produced from thorium.
Downwinders were individuals and communities in the intermountain between the Cascade and Rocky Mountain ranges primarily in Arizona, Nevada, New Mexico and Utah but also in Oregon, Washington, and Idaho who were exposed to radioactive contamination or nuclear fallout from atmospheric or underground nuclear weapons testing, and nuclear accidents.
Radiophobia is a fear of ionizing radiation. Examples include health patients refusing X-rays because they believe the radiation will kill them, such as Steve Jobs and Bob Marley who both died after refusing radiation treatment for their cancer. Given that overdoses of radiation are harmful, even deadly it is reasonable to fear high doses of radiation. The term is also used to describe the opposition to the use of nuclear technology arising from concerns disproportionately greater than actual risks would merit.
The United States Radiation Exposure Compensation Act (RECA) is a federal statute implemented in 1990, set to expire in July 2024, providing for the monetary compensation of people, including atomic veterans, who contracted cancer and a number of other specified diseases as a direct result of their exposure to atmospheric nuclear testing undertaken by the United States during the Cold War as residents, or their exposure to radon gas and other radioactive isotopes while undertaking uranium mining, milling or the transportation of ore.
A nuclear explosion is an explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction. The driving reaction may be nuclear fission or nuclear fusion or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a pure fusion weapon remains a hypothetical device. Nuclear explosions are used in nuclear weapons and nuclear testing.
Uranium in the environment is a global health concern, and comes from both natural and man-made sources. Mining, phosphates in agriculture, weapons manufacturing, and nuclear power are sources of uranium in the environment.
Strontium-90 is a radioactive isotope of strontium produced by nuclear fission, with a half-life of 28.8 years. It undergoes β− decay into yttrium-90, with a decay energy of 0.546 MeV. Strontium-90 has applications in medicine and industry and is an isotope of concern in fallout from nuclear weapons, nuclear weapons testing, and nuclear accidents.
Nuclear power has various environmental impacts, both positive and negative, including the construction and operation of the plant, the nuclear fuel cycle, and the effects of nuclear accidents. Nuclear power plants do not burn fossil fuels and so do not directly emit carbon dioxide. The carbon dioxide emitted during mining, enrichment, fabrication and transport of fuel is small when compared with the carbon dioxide emitted by fossil fuels of similar energy yield, however, these plants still produce other environmentally damaging wastes. Nuclear energy and renewable energy have reduced environmental costs by decreasing CO2 emissions resulting from energy consumption.
Uranium mining and the Navajo people began in 1944 in northeastern Arizona, northwestern New Mexico, and southeastern Utah.
The uranium mining debate covers the political and environmental controversies of uranium mining for use in either nuclear power or nuclear weapons.
Nuclear labor issues exist within the international nuclear power industry and the nuclear weapons production sector worldwide, impacting upon the lives and health of laborers, itinerant workers and their families.
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