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74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
was designed under the guidance and direct participation of Igor Kurchatov, Lev Mysovskii and Gamow. In 1932, Gamow and Mysovskii submitted a draft design for consideration by the Academic Council of the Radium Institute, which approved it. The cyclotron was not completed until 1937.
# Radioactive decay.
... | 37,600 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
by Ronald W. Gurney and Edward U. Condon. Gurney and Condon did not, however, achieve the quantitative results achieved by Gamow.
Classically, the particle is confined to the nucleus because of the high energy requirement to escape the very strong nuclear potential well. Also classically, it takes an enor... | 37,601 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
the emission, which had been previously discovered empirically and was known as the Geiger–Nuttall law. Some years later, the name Gamow factor or Gamow–Sommerfeld factor was applied to the probability of incoming nuclear particles tunnelling through the electrostatic Coulomb barrier and undergoing nuclear... | 37,602 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
spent much of the next two years trying to leave the Soviet Union, with or without official permission. Niels Bohr and other friends invited Gamow to visit during this period, but Gamow could not get permission to leave.
Gamow later said that his first two attempts to defect with his wife were in 1932 and... | 37,603 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
he would not go alone. Eventually the Soviet authorities relented and issued passports for the couple. The two attended and arranged to extend their stay, with the help of Marie Curie and other physicists. Over the next year, Gamow obtained temporary work at the Curie Institute, University of London, and t... | 37,604 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
publish major scientific papers with Mário Schenberg and Ralph Alpher. By the late 1930s, Gamow's interests had turned towards astrophysics and cosmology.
In 1935, Gamow's son, Igor Gamow was born (in his 1947 book, Gamow's dedication was "To my son Igor, who wanted to be a cowboy"). George Gamow became a... | 37,605 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
history of the Solar System. In 1945, he co-authored a paper supporting work by German theoretical physicist Carl Friedrich von Weizsäcker on planetary formation in the early Solar System. Gamow published another paper in the British journal "Nature" in 1948, in which he developed equations for the mass an... | 37,606 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
describing a universe of uniform matter density and constant spatial curvature. Gamow's crucial advance would provide a physical reification of Lemaître's idea of a unique primordial quantum. Gamow did this by assuming that the early universe was dominated by radiation rather than by matter. Most of the la... | 37,607 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
and Planck's constant h.
Gamow's interest in cosmology arose from his earlier interest in energy generation and element production and transformation in stars. This work, in turn, evolved from his fundamental discovery of quantum tunneling as the mechanism of nuclear alpha decay, and his application of th... | 37,608 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
in stars and in supernovae. Gamow formulated a set of coupled differential equations describing his proposed process and assigned, as a PhD. dissertation topic, his graduate student Ralph Alpher the task of solving the equations numerically. These results of Gamow and Alpher appeared in 1948 as the Alpher–... | 37,609 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
and other subjects.
In 1948, he published a paper dealing with an attenuated version of the coupled set of equations describing the production of the proton and the deuteron from thermal neutrons. By means of a simplification and using the observed ratio of hydrogen to heavier elements he was able to obta... | 37,610 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
is trivially predicted – a value slightly more than twice the presently accepted value. In 1967 he published a reminder and recapitulation of his own work as well as that of Alpher and Robert Herman (both with Gamow and also independently of him). This was prompted by the discovery of the cosmic background... | 37,611 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
DNA and RNA.
In 1953, Francis Crick, James Watson, Maurice Wilkins and Rosalind Franklin discovered the double helix structure of the DNA macromolecule. Gamow attempted to solve the problem of how the ordering of four different bases (adenine, cytosine, thymine and guanine) in DNA chains might control the... | 37,612 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
for the twenty amino acids which, he suggested, might well be the sole constituents of all proteins. Gamow's contribution to solving the problem of genetic coding gave rise to important models of biological degeneracy.
The specific system that Gamow was proposing (called "Gamow's diamonds") proved to be i... | 37,613 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
and changing the order of a combination of bases does change the amino acid.
In 1954, Gamow and Watson co-founded the RNA Tie Club. This was a discussion group of leading scientists concerned with the problem of the genetic code, which counted among its members the physicists Edward Teller and Richard Fey... | 37,614 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
became a visiting professor at the University of California, Berkeley. In 1956, he moved to the University of Colorado Boulder, where he remained for the rest of his career. In 1956, Gamow became one of the founding members of the Physical Science Study Committee (PSSC), which later reformed teaching of hi... | 37,615 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
older brother of Frank Oppenheimer, and both of them had worked on the Manhattan Project before their careers in physics were derailed by McCarthyism). While in Colorado, Frank Oppenheimer became increasingly interested in teaching science through simple hands-on experiments, and he eventually moved to San... | 37,616 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
stepwise (corresponding to the longer rows of the conventional periodic table).
Gamow was an atheist.
Gamow continued his teaching at the University of Colorado Boulder and focused increasingly on writing textbooks and books on science for the general public. After several months of ill health, surgeries... | 37,617 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
was seeking a fresh understanding of some concepts used in his earlier work, with Paul Dirac. Gamow relied on Alpher for deeper understanding of mathematics.
On August 19, 1968, Gamow died at age 64 in Boulder, Colorado, and was buried there in Green Mountain Cemetery. The physics department tower at the ... | 37,618 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
a sense of excitement with the revolution in physics and other scientific topics of interest to the common reader. Gamow himself sketched the many illustrations for his books, which added a new dimension to and complemented what he intended to convey in the text. He was unafraid to introduce mathematics wh... | 37,619 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
with Richard Blade on a textbook "Basic Theories in Modern Physics", but the work was never completed or published under that title. Gamow was also writing "My World Line: An Informal Autobiography", which was published posthumously in 1970.
A collection of Gamow's writings was donated to The George Washi... | 37,620 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
"One Two Three ... Infinity" (1947, revised 1961), Viking Press (copyright renewed by Barbara Gamow, 1974), Dover Publications, , illustrated by the author. Dedicated to his son, Igor Gamow, it remains one of the most well received ever in the popular science genre. The book winds from mathematics to biolo... | 37,621 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
Viking Press,
### "Mr Tompkins" series.
Throughout these books, Mr Tompkins is introduced as "C. G. H. Tompkins" to emphasize the notion of cGh physics.
- "Mr Tompkins in Wonderland" (1940) Originally published in serial form in "Discovery" magazine (UK) in 1938.
- "Mr Tompkins Explores the Atom" (1945... | 37,622 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
including recent developments in molecular biology. Coauthored by M. Ycas.
- "The New World of Mr Tompkins" (1999), coauthor Russell Stannard updated "Mr Tompkins in Paperback" ( is a hardcover)
## Science textbooks.
- "The Constitution of Atomic Nuclei and Radioactivity" (1931)
- "Structure of Atomic ... | 37,623 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
The Essential George Gamow" (2005). edited by Robert Oerter, Pi Press, . Incorporates material from "Matter, Earth, and Sky" and "The Atom and Its Nucleus". Notwithstanding the title, this book is "not" part of the Mr. Tompkins series.
# In popular culture.
George Gamow was the inspiration for Professor ... | 37,624 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
Robert C. Herman, and the Prediction of the Cosmic Microwave Background Radiation," Physics in Perspective, 14(3), 300–334, 2012, by Victor S. Alpher.
# External links.
- Memorial Lecture Series (University of Colorado Boulder)
- Biographic sketch (in PDF)
- Gamow Books
- Annotated bibliography for Ge... | 37,625 |
74641 | George Gamow | https://en.wikipedia.org/w/index.php?title=George%20Gamow | George Gamow
sity of Colorado Boulder)
- Biographic sketch (in PDF)
- Gamow Books
- Annotated bibliography for George Gamow from the Alsos Digital Library for Nuclear Issues
- Gamow memorial at George Washington University
- Oral History interview transcript with George Gamow – a lengthy interview, a few months be... | 37,626 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
Knesset
The Knesset ( ; lit. "the gathering" or "assembly") is the unicameral national legislature of Israel. As the legislative branch of the Israeli government, the Knesset passes all laws, elects the President and Prime Minister (although the latter is ceremonially appointed by the President), approves the ... | 37,627 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
However, until an election is completed, the Knesset maintains authority in its current composition. The Knesset is located in Givat Ram, Jerusalem. The Knesset was temporarily dissolved on 30 May 2019.
# Name.
The term "Knesset" is derived from the ancient "Knesset HaGdola" () or "Great Assembly", which acco... | 37,628 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
body.
# Role in Israeli government.
As the legislative branch of the Israeli government, the Knesset passes all laws, elects the president, approves the cabinet, and supervises the work of the government through its committees. It also has the power to waive the immunity of its members, remove the President a... | 37,629 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
and amended by the Knesset, acting in its capacity as a Constituent Assembly.
In addition to the absence of a formal constitution, and with no Basic Law thus far being adopted which formally grants a power of judicial review to the judiciary, the Supreme Court of Israel has since the early nineties asserted it... | 37,630 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
House Committee, and their factional composition represents that of the Knesset itself. Committees may elect sub-committees and delegate powers to them, or establish joint committees for issues concerning more than one committee. To further their deliberations, they invite government ministers, senior officials... | 37,631 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
of expertise, and may initiate legislation. However, such legislation may only deal with Basic Laws and laws dealing with the Knesset, elections to the Knesset, Knesset members, or the State Comptroller. Special committees function in a similar manner to permanent committees, but are appointed to deal with part... | 37,632 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
deals with appeals against the interpretation given by the Speaker during a sitting of the plenum to the Knesset rules of procedure or precedents, and Public Committees, established to deal with issues that are connected to the Knesset.
Permanent committees:
- House Committee
- Finance Committee
- Economic ... | 37,633 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
committees:
- Committee on Drug Abuse
- Committee on the Rights of the Child
- Committee on Foreign Workers
- Israeli Central Elections Committee
- Public Petitions Committee
The other committees are the Arrangements Committee and the Ethics Committee. The Ethics Committee is responsible for jurisdiction ... | 37,634 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
as suggesting committee chairs, lays down the sitting arrangements of political parties in the Knesset, and the distribution of rooms in the Knesset building to members and parties.
# Caucuses.
Knesset members often join together in formal or informal groups known as "lobbies" or "caucuses", to advocate for a... | 37,635 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
Beilin, backed the ultimately unsuccessful institution of the so-called "Norwegian law", which would require appointed members of the cabinet to resign their seats in the Knesset and allow other members of their parties to take their positions while they serve in the cabinet; this would have resulted in more ac... | 37,636 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
All Israeli citizens 18 years or older may vote in legislative elections, which are conducted by secret ballot.
Knesset seats are allocated among the various parties using the D'Hondt method of party list proportional representation. A party or electoral alliance must pass the election threshold of 3.25% of th... | 37,637 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
Knesset). As a result of the low threshold, a typical Knesset has 10 or more factions represented. With such a large number of parties, it is nearly impossible for one party or faction to govern alone, let alone win a majority. No party or faction has ever won the 61 seats necessary for a majority; the closest ... | 37,638 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
with the leaders of every party that won Knesset seats and asks them to recommend which party leader should form the government. The president then nominates the party leader who is most likely to command the support of a majority in the Knesset (though not necessarily the leader of the largest party/faction in... | 37,639 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
main Arab-dominated Israeli political parties. The present Knesset was dissolved on shortly after midnight on 30 May 2019, and will remain so until after elections are held in September 2019.
# Functioning.
Despite numerous motions of no confidence being tabled in the Knesset, a government has only been defea... | 37,640 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
Minister Moshe Sharett resigned in June 1955 following the abstention of the General Zionists (part of the governing coalition) during a vote of no-confidence; the ninth government, which fell after Prime Minister Ben-Gurion resigned in January 1961 over a motion of no-confidence on the Lavon Affair; and the se... | 37,641 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
on 14 May 1948 and succeeding the Assembly of Representatives that had functioned as the Jewish community's representative body during the Mandate era.
The Knesset compound sits on a hilltop in western Jerusalem in a district known as Sheikh Badr before the 1948 Arab–Israeli War, now Givat Ram. The main buildi... | 37,642 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
appearance.
Before the construction of its permanent home, the Knesset met in the Jewish Agency building in Jerusalem, the Kessem Cinema building in Tel Aviv and the Froumine building in Jerusalem.
## Location and construction timeline.
- 14 February 1949: First meeting of the Constituent Assembly, Jewish Ag... | 37,643 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
design won the competition
- 1955: Government approves plans to build the Knesset in its current location
- 1957: James de Rothschild informs Prime Minister David Ben-Gurion of his desire to finance the construction of the building
- 14 October 1958: Cornerstone-laying for new Knesset building
- 31 August 1... | 37,644 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
first election in 1949 is known as the First Knesset. The current Knesset, elected in 2019, is the Twenty-first Knesset.
- First Knesset (1949–1951)
- Second Knesset (1951–1955)
- Third Knesset (1955–1959)
- Fourth Knesset (1959–1961)
- Fifth Knesset (1961–1965)
- Sixth Knesset (1965–1969)
- Seventh Knes... | 37,645 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
(2013–2015)
- Twentieth Knesset (2015–2019)
- Twenty-first Knesset (2019-present)
# Tourism.
The Knesset holds morning tours in Hebrew, Arabic, English, French, Spanish, German, and Russian on Sunday and Thursday, and there are also live session viewing times on Monday, Tuesday, and Wednesday mornings.
# S... | 37,646 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
on Mount Herzl on the eve of Israeli Independence Day.
# Public perception.
A poll conducted by the Israeli Democracy Institute in April and May 2014 showed that while a majority of both Jews and Arabs in Israel are proud to be citizens of the country, both groups share a distrust of Israel's government, incl... | 37,647 |
74656 | Knesset | https://en.wikipedia.org/w/index.php?title=Knesset | Knesset
's government, including the Knesset. Almost three quarters of Israelis surveyed said corruption in Israel's political leadership was either "widespread or somewhat prevalent". A majority of both Arabs and Jews trusted the Israel Defense Forces, the President of Israel, and the Supreme Court of Israel, but Jews... | 37,648 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
Nuclear safety and security
Nuclear safety is defined by the International Atomic Energy Agency (IAEA) as "The achievement of proper operating conditions, prevention of accidents or mitigation of accident consequences, resulting in protection of workers, the public and the environment from ... | 37,649 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
of nuclear materials for medical, power, industry, and military uses.
The nuclear power industry has improved the safety and performance of reactors, and has proposed new and safer reactor designs. However, a perfect safety cannot be guaranteed. Potential sources of problems include human e... | 37,650 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
as well as the safety of military research involving nuclear materials, is generally handled by agencies different from those that oversee civilian safety, for various reasons, including secrecy. There are ongoing concerns about terrorist groups acquiring nuclear bomb-making material.
# Ove... | 37,651 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
contamination.
Nuclear safety therefore covers at minimum: –
# Responsible agencies.
## International.
Internationally the International Atomic Energy Agency "works with its Member States and multiple partners worldwide to promote safe, secure and peaceful nuclear technologies." Some sci... | 37,652 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
and maintain a high level of nuclear safety worldwide, to establish and maintain effective defences in nuclear installations against potential radiological hazards, and to prevent accidents having radiological consequences.
The Convention was drawn up in the aftermath of the Three Mile Isla... | 37,653 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
for nuclear installations contained in the IAEA document Safety Fundamentals ‘The Safety of Nuclear Installations’ (IAEA Safety Series No. 110 published 1993). These obligations cover the legislative and regulatory framework, the regulatory body, and technical safety obligations related to, ... | 37,654 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
with the objective of preventing accidents in the commissioning and operation and, should an accident occur, mitigating possible releases of radionuclides causing long-term off site contamination and avoiding early radioactive releases or radioactive releases large enough to require long-ter... | 37,655 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
for addressing this objective throughout the lifetime of nuclear power plants are to take into account the relevant IAEA Safety Standards and, as appropriate, other good practices as identified inter alia in the Review Meetings of the CNS.
There are several problems with the IAEA, says Najm... | 37,656 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
utilizing nuclear power have specialist institutions overseeing and regulating nuclear safety. Civilian nuclear safety in the U.S. is regulated by the Nuclear Regulatory Commission (NRC). However, critics of the nuclear industry complain that the regulatory bodies are too intertwined with th... | 37,657 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
offered include:
- in China, where Kang Rixin, former general manager of the state-owned China National Nuclear Corporation, was sentenced to life in jail in 2010 for accepting bribes (and other abuses), a verdict raising questions about the quality of his work on the safety and trustworthi... | 37,658 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
to the Ministry of Economy, Trade and Industry, which overtly seeks to promote the nuclear industry and ministry posts and top jobs in the nuclear business are passed among the same small circle of experts.
The book argues that nuclear safety is compromised by the suspicion that, as Eisaku ... | 37,659 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
and the Defence Nuclear Safety Regulator (DNSR). The Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) is the Federal Government body that monitors and identifies solar radiation and nuclear radiation risks in Australia. It is the main body dealing with ionizing and non-ion... | 37,660 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
Nuclear power plant safety and security.
## Complexity.
Nuclear power plants are some of the most sophisticated and complex energy systems ever designed. Any complex system, no matter how well it is designed and engineered, cannot be deemed failure-proof. Veteran journalist and author Step... | 37,661 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
engineers did not know how to respond. The accident revealed serious deficiencies in a system that was meant to protect public health and safety.
The 1979 Three Mile Island accident inspired Perrow's book "Normal Accidents", where a nuclear accident occurs, resulting from an unanticipated i... | 37,662 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
would eventually suffer what he termed a 'normal accident'. Therefore, he suggested, we might do better to contemplate a radical redesign, or if that was not possible, to abandon such technology entirely.
A fundamental issue contributing to a nuclear power system's complexity is its extreme... | 37,663 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
contain large amounts of radioactive fission products which, if dispersed, can pose a direct radiation hazard, contaminate soil and vegetation, and be ingested by humans and animals. Human exposure at high enough levels can cause both short-term illness and death and longer-term death by can... | 37,664 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
to handle the excess heat this causes; however, should the reactor also experience a loss-of-coolant accident, then the fuel may melt or cause the vessel in which it is contained to overheat and melt. This event is called a nuclear meltdown.
After shutting down, for some time the reactor st... | 37,665 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
from the grid and from emergency generators, as a quake and tsunami recently did in Japan", Nuclear Regulatory Commission officials said in June 2011.
As a safeguard against mechanical failure, many nuclear plants are designed to shut down automatically after two days of continuous and unat... | 37,666 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
destroyed Iraq's Osirak nuclear research facility in Operation Opera.
- Between 1984 and 1987, Iraq bombed Iran's Bushehr nuclear plant six times.
- On 8 January 1982, Umkhonto we Sizwe, the armed wing of the ANC, attacked South Africa's Koeberg nuclear power plant while it was still under... | 37,667 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
force of armed guards. In Canada, all reactors have an "on-site armed response force" that includes light-armored vehicles that patrol the plants daily. The NRC's "Design Basis Threat" criterion for plants is a secret, and so what size of attacking force the plants are able to protect agains... | 37,668 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
coast of the U.S. and threatened to crash the plane into a U.S. nuclear weapons plant in Oak Ridge, Tennessee. The plane got as close as 8,000 feet above the site before the hijackers’ demands were met.
The most important barrier against the release of radioactivity in the event of an aircr... | 37,669 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
has caused them."
In addition, supporters point to large studies carried out by the U.S. Electric Power Research Institute that tested the robustness of both reactor and waste fuel storage and found that they should be able to sustain a terrorist attack comparable to the September 11 terror... | 37,670 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
attacks. Even during the construction of the first nuclear power plants, this issue has been advised by security bodies. Concrete threats of attack against nuclear power plants by terrorists or criminals are documented from several states. While older nuclear power plants were built without ... | 37,671 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
arising from a terrorist caused large aircraft crash on a nuclear power plant is currently being discussed. Such a terrorist attack could have catastrophic consequences. For example, the German government has confirmed that the nuclear power plant Biblis A would not be completely protected f... | 37,672 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
Plant location.
In many countries, plants are often located on the coast, in order to provide a ready source of cooling water for the essential service water system. As a consequence the design needs to take the risk of flooding and tsunamis into account. The World Energy Council (WEC) argu... | 37,673 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
caused by the 2011 Tōhoku earthquake and tsunami lead to the Fukushima I nuclear accidents.
The design of plants located in seismically active zones also requires the risk of earthquakes and tsunamis to be taken into account. Japan, India, China and the USA are among the countries to have p... | 37,674 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
multiple nuclear reactor units close to one another. Because of the closeness of the reactors, Plant Director Masao Yoshida "was put in the position of trying to cope simultaneously with core meltdowns at three reactors and exposed fuel pools at three units".
## Nuclear safety systems.
The... | 37,675 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
of radioactive materials.
During everyday routine operations, emissions of radioactive materials from nuclear plants are released to the outside of the plants although they are quite slight amounts.
The daily emissions go into the air, water and soil.
NRC says, "nuclear power plants somet... | 37,676 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
(mSv) annually in average public radiation exposure; the legacy of the Chernobyl disaster is 0.002 mSv/a as a global average as of a 2008 report; and natural radiation exposure averages 2.4 mSv annually although frequently varying depending on an individual's location from 1 to 13 mSv.
## J... | 37,677 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
to facing the potential threat of nuclear emergencies." According to him, a national program to develop robots for use in nuclear emergencies was terminated in midstream because it "smacked too much of underlying danger." Though Japan is a major power in robotics, it had none to send in to F... | 37,678 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
safe. It is instead claimed that a major accident has a likelihood of occurrence lower than (for example) 0.0001/year.
Incidents such as the Fukushima Daiichi nuclear disaster could have been avoided with stricter regulations over nuclear power. In 2002, TEPCO, the company that operated the... | 37,679 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
94% Uranium, 1.3% Plutonium, 0.14% other actinides, and 5.2% fission products. About 1.0% of this waste consists of long-lived isotopes Se, Zr, Te, Pd, Sn, I and Cs. Shorter lived isotopes including Sr, Sr, Ru, Sn, Cs, Cs, and Pm constitute 0.9% at one year, decreasing to 0.1% at 100 years. ... | 37,680 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
trillion to the total radioactivity.
The difference between short-lived high-level nuclear waste and long-lived low-level waste can be illustrated by the following example. As stated above, one mole of both I and I release 3x10 decays in a period equal to one half-life. I decays with the re... | 37,681 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
with the radioactivity decreasing by less than 1% in 100,000 years.
One tonne of nuclear waste also reduces CO emission by 25 million tonnes.
Governments around the world are considering a range of waste management and disposal options, usually involving deep-geologic placement, although t... | 37,682 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
radioactivity of a quantity of buried human radioactive waste would diminish over time compared to natural radioisotopes (such as the decay chain of 120 trillion tons of thorium and 40 trillion tons of uranium which are at relatively trace concentrations of parts per million each over the cr... | 37,683 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
have a far higher concentration of artificial radioisotopes underground than such an average.
# Safety culture and human errors.
One relatively prevalent notion in discussions of nuclear safety is that of safety culture. The International Nuclear Safety Advisory Group, defines the term as ... | 37,684 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
not easy to change. Operators almost never follow instructions and written procedures exactly, and “the violation of rules appears to be quite rational, given the actual workload and timing constraints under which the operators must do their job”. Many attempts to improve nuclear safety cult... | 37,685 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
now".
An assessment conducted by the "Commissariat à l’Énergie Atomique" (CEA) in France concluded that no amount of technical innovation can eliminate the risk of human-induced errors associated with the operation of nuclear power plants. Two types of mistakes were deemed most serious: err... | 37,686 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
So a better-designed, newer reactor is not always a safer one, and older reactors are not necessarily more dangerous than newer ones. The 1979 Three Mile Island accident in the United States occurred in a reactor that had started operation only three months earlier, and the Chernobyl disaste... | 37,687 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
Experts say that the "largest single internal factor determining the safety of a plant is the culture of security among regulators, operators and the workforce — and creating such a culture is not easy".
# Risks.
The routine health risks and greenhouse gas emissions from nuclear fission po... | 37,688 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
The Price-Anderson Act limits industry's liability in the case of accidents, and the 1982 Nuclear Waste Policy Act charges the federal government with responsibility for permanently storing nuclear waste.
Population density is one critical lens through which other risks have to be assessed,... | 37,689 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
5.5 million people within a 30-kilometre radius and the 1,208-megawatt Chin Shan plant with 4.7 million; both zones include the capital city of Taipei.
172,000 people living within a 30 kilometre radius of the Fukushima Daiichi nuclear power plant, have been forced or advised to evacuate th... | 37,690 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
events:
A rare event – especially one that has never occurred – is difficult to foresee, expensive to plan for and easy to discount with statistics. Just because something is only supposed to happen every 10,000 years does not mean that it will not happen tomorrow. Over the typical 40-year ... | 37,691 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
could unleash massive floods. Some reactors are located close to faults or shorelines, a dangerous scenario like that which emerged at Three Mile Island and Fukushima – a catastrophic coolant failure, the overheating and melting of the radioactive fuel rods, and a release of radioactive mate... | 37,692 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
by a "beyond design basis event," the tsunami and associated earthquakes were more powerful than the plant was designed to accommodate, and the accident is directly due to the tsunami overflowing the too-low seawall. Since then, the possibility of unforeseen beyond design basis events has be... | 37,693 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
prose".
Kennette Benedict has said that nuclear technology and plant operations continue to lack transparency and to be relatively closed to public view:
Despite victories like the creation of the Atomic Energy Commission, and later the Nuclear Regular Commission, the secrecy that began wi... | 37,694 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
said there must be greater transparency in nuclear emergencies.
Historically many scientists and engineers have made decisions on behalf of potentially affected populations about whether a particular level of risk and uncertainty is acceptable for them. Many nuclear engineers and scientists... | 37,695 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
Amory B. Lovins and John H. Price. The main theme of the book is that the most important parts of the nuclear power debate are not technical disputes but relate to personal values, and are the legitimate province of every citizen, whether technically trained or not.
# Nuclear and radiation ... | 37,696 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
how effective conventional safety devices are, there is a form of accident that is inevitable, and such accidents are a ‘normal’ consequence of the system.” In short, there is no escape from system failures.
Whatever position one takes in the nuclear power debate, the possibility of catastr... | 37,697 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
companies "would shoulder the fearsome liabilities arising from severe nuclear accidents".
## Hanford Site.
The Hanford Site is a mostly decommissioned nuclear production complex on the Columbia River in the U.S. state of Washington, operated by the United States federal government. Pluton... | 37,698 |
4222539 | Nuclear safety and security | https://en.wikipedia.org/w/index.php?title=Nuclear%20safety%20and%20security | Nuclear safety and security
practices were inadequate, and government documents have since confirmed that Hanford's operations released significant amounts of radioactive materials into the air and the Columbia River, which still threatens the health of residents and ecosystems. The weapons production reactors were dec... | 37,699 |
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