Nuclear-Power-Accidents&Incidents
Chernobyl_burning-aerial_view_of_core.jpg

Nuclear power reactors are a system which requires 100 percent perfect safety all the time. Of course, enter in error-prone humans and profit-motive CEO's and this becomes an impossible achievement. Take just the Chernobyl accident alone. Fallout covered much of eastern Europe, the United Kingdom and all the way over to the Eastern United States. The ground immediately downwind of the meltdown explosion is now uninhabitable for 600 years.

Here are the serious accidents and incidents known in the public domain. It is quite possible many more occurred that went unreported (for instance, Romanian officials claimed they had near-meltdown events, but that their modularized containment tubes design made it impossible to harm anybody.) In another critical industry, Aviation is a super safe system which requires great documentation, however, airlines have repeatedly been caught not performing required safety work or in actual collusion with government inspectors. When an airliner goes down a hundred people may be killed. When a nuclear reactor leaks or explodes, millions can suffer adverse health affects. After you see how many close calls we've had, and how many thousands of places are now contaminated due to reactor operation (including depleted uranium ammunition) it seems impossible that an informed public would ever support such a dangerous menace in their back yards.

This page outlines known:

Civilian Reactor Emergencies

Military Reactor Crisis

Maritime

Airborne

Weapon Testing

This page will start with what was seen on wikipedia on November 7, 2009. None of it has been verified by us. http://en.wikipedia.org/wiki/List_of_civilian_nuclear_accidents

List of civilian nuclear accidents

From Wikipedia, the free encyclopedia
This article lists notable civilian accidents involving fissile nuclear material or nuclear reactors. Civilian incidents not serious enough to be accidents are listed at List of civilian nuclear incidents.
Contents [hide]
1 Scope of this article
2 1950s
3 1960s
4 1970s
5 1980s
6 1990s
7 2000s
8 See also
9 References
10 external links
[edit]Scope of this article

In listing civilian nuclear accidents, the following criteria have been followed:
There must be well-attested and substantial health damage, property damage or contamination.
The damage must be related directly to radioactive material, not merely (for example) at a nuclear power plant.
To qualify as "civilian", the nuclear operation/material must be principally for non-military purposes.
The event should involve fissile material or a reactor.
[edit]1950s

December 12, 1952 — INES Level 5 - Chalk River, Ontario, Canada - Reactor core damaged
A reactor shutoff rod failure, combined with several operator errors, led to a major power excursion of more than double the reactor's rated output at AECL's NRX reactor. The operators purged the reactor's heavy water moderator, and the reaction stopped in under 30 seconds. A cover gas system failure led to hydrogen explosions, which severely damaged the reactor core. The fission products from approximately 30 kg of uranium were released through the reactor stack. Irradiated light-water coolant leaked from the damaged coolant circuit into the reactor building; some 4,000 cubic meters were pumped via pipeline to a disposal area to avoid contamination of the Ottawa River. Subsequent monitoring of surrounding water sources revealed no contamination. No immediate fatalities or injuries resulted from the incident; a 1982 followup study of exposed workers showed no long-term health effects. Future U.S. President Jimmy Carter, then a nuclear engineer in the US Navy, was among the cleanup crew.[1][2]
May 24, 1958 — INES Level needed - Chalk River, Ontario, Canada - Fuel damaged
Due to inadequate cooling a damaged uranium fuel rod caught fire and was torn in two as it was being removed from the core at the NRU reactor. The fire was extinguished, but not before radioactive combustion products contaminated the interior of the reactor building and to a lesser degree, an area surrounding the laboratory site. Over 600 people were employed in the clean-up.[3][4]
October 25, 1958 - INES Level needed - Vinča, Yugoslavia - Criticality excursion, irradiation of personnel
During a subcritical counting experiment a power buildup went undetected at the Boris Kidrich Institute's zero-power natural uranium heavy water moderated research reactor [5]. Saturation of radiation detection chambers gave the researchers false readings and the level of moderator in the reactor tank was raised triggering a criticality excursion which a researcher detected from the smell of ozone [6]. Six scientists received radiation doses between 200 to 400 rems [7] (p.96). An experimental bone marrow transplant treatment was performed on all of them in France and five survived, despite the ultimate rejection of the marrow in all cases. A single woman among them later had a child without apparent complications. This was one of the first nuclear incidents investigated by then newly-formed IAEA. [8]
July 26, 1959 — INES Level needed - Santa Susana Field Laboratory, California, United States - Partial meltdown
A partial core meltdown took place when the Sodium Reactor Experiment (SRE) experienced a power excursion that caused severe overheating of the reactor core, resulting in the melting of one-third of the nuclear fuel and significant releases of radioactive gases. [9]
[edit]1960s

October 5, 1966 — INES Level needed - Monroe, Michigan, United States - Partial meltdown
A sodium cooling system malfunction caused a partial meltdown at the Enrico Fermi demonstration nuclear breeder reactor (Enrico Fermi-1 fast breeder reactor). The accident was attributed to a zirconium fragment that obstructed a flow-guide in the sodium cooling system. Two of the 105 fuel assemblies melted during the incident, but no contamination was recorded outside the containment vessel. [10]
Winter 1966-1967 (date unknown) – INES Level needed – location unknown – loss of coolant accident
The Soviet icebreaker Lenin, the USSR’s first nuclear-powered surface ship, suffered a major accident (possibly a meltdown — exactly what happened remains a matter of controversy in the West) in one of its three reactors. To find the leak the crew broke through the concrete and steel radiation shield with sledgehammers, causing irreparable damage. It was rumored that around 30 of the crew were killed. The ship was abandoned for a year to allow radiation levels to drop before the three reactors were removed, to be dumped into the Tsivolko Fjord on the Kara Sea, along with 60% of the fuel elements packed in a separate container. The reactors were replaced with two new ones, and the ship re-entered service in 1970, serving until 1989.
May 1967 — INES Level needed - Dumfries and Galloway, Scotland, United Kingdom - Partial meltdown
Graphite debris partially blocked a fuel channel causing a fuel element to melt and catch fire at the Chapelcross nuclear power station. Contamination was confined to the reactor core. The core was repaired and restarted in 1969, operating until the plant's shutdown in 2004.[11] [12].
January 21, 1969 — INES Level needed - Lucens, Canton of Vaud, Switzerland - Explosion
A total loss of coolant led to a power excursion and explosion of an experimental nuclear reactor in a large cave at Lucens. The underground location of this reactor acted like a containment building and prevented any outside contamination. The cavern was heavily contaminated and was sealed. No injuries or fatalities resulted. [13][14]
[edit]1970s

February 22, 1977 — INES Level 4 - Jaslovské Bohunice, Czechoslovakia - Fuel damaged
Operators neglected to remove moisture absorbing materials from a fuel rod assembly before loading it into the KS 150 reactor at power plant A-1. The accident resulted in damaged fuel integrity, extensive corrosion damage of fuel cladding and release of radioactivity into the plant area. The plant was decommissioned following this accident. [15]

March 28, 1979 — INES Level 5 - Middletown, Dauphin County, Pennsylvania, United States - Partial meltdown
Equipment failures and worker mistakes contributed to a loss of coolant and a partial core meltdown at the Three Mile Island Nuclear Generating Station 15 km (9 miles) southeast of Harrisburg. While the reactor was extensively damaged on-site radiation exposure was under 100 millirems (less than annual exposure due to natural sources), with exposure of 1 millirem (10 µSv) to approximately 2 million people. There were no fatalities. Follow up radiological studies predict at most one long-term cancer fatality. [16][17][18]
[No, No, No…. That's not what really happened. For the rest of the Three Mile Island story go here: Three Mile Island Cover Up

March 13, 1980 - INES Level 4 - Orléans, France - Nuclear materials leak
A brief power excursion in Reactor A2 led to a rupture of fuel bundles and a minor release (8 x 1010 Bq) of nuclear materials at the Saint-Laurent Nuclear Power Plant. The reactor was repaired and continued operation until its decommissioning in 1992. [19]
March, 1981 — INES Level 2 - Tsuruga, Japan - Overexposure of workers
More than 100 workers were exposed to doses of up to 155 millirem per day radiation during repairs of a nuclear power plant, violating the company's limit of 100 millirems (1 mSv) per day. [20]
September 23, 1983 — INES Level 4 - Buenos Aires, Argentina - Accidental criticality
An operator error during a fuel plate reconfiguration in an experimental test reactor led to an excursion of 3×1017 fissions at the RA-2 facility. The operator absorbed 2000 rad (20 Gy) of gamma and 1700 rad (17 Gy) of neutron radiation which killed him two days later. Another 17 people outside of the reactor room absorbed doses ranging from 35 rad (0.35 Gy) to less than 1 rad (0.01 Gy).[21] pg103[22]
April 26, 1986 — INES Level 7 - Prypiat, Ukraine (then USSR) - Power excursion, explosion, complete meltdown
A mishandled reactor safety test led to an uncontrolled power excursion, causing a severe steam explosion, meltdown and release of radioactive material at the Chernobyl nuclear power plant located approximately 100 kilometers north-northwest of Kiev. Approximately fifty fatalities resulted from the accident and the immediate aftermath most of these being cleanup personnel. An additional nine fatal cases of thyroid cancer in children in the Chernobyl area have been attributed to the accident. The explosion and combustion of the graphite reactor core spread radioactive material over much of Europe. 100,000 people were evacuated from the areas immediately surrounding Chernobyl in addition to 300,000 from the areas of heavy fallout in Ukraine, Belarus and Russia. An "Exclusion Zone" was created surrounding the site encompassing approximately 1,000 mi² (3,000 km²) and deemed off-limits for human habitation for an indefinite period. Several studies by governments, UN agencies and environmental groups have estimated the consequences and eventual number of casualties. Their findings are subject to controversy.
See also: Chernobyl disaster
May 4, 1986 – INES Level needed - Hamm-Uentrop, Germany (then West Germany) - Fuel damaged
A spherical fuel pebble became lodged in the pipe used to deliver fuel elements to the reactor at an experimental 300-megawatt THTR-300 HTGR. Attempts by an operator to dislodge the fuel pebble damaged its cladding, releasing radiation detectable up to two kilometers from the reactor. [23]
November 24, 1989 — INES Level needed - Greifswald, Germany (then East Germany) - Fuel damaged
Operators disabled three of six cooling pumps to test emergency shutoffs. Instead of the expected automatic shutdown a fourth pump failed causing excessive heating which damaged ten fuel rods. The accident was attributed to sticky relay contacts and generally poor construction in the Soviet-built reactor. [24]
[edit]1990s

April 6, 1993 — INES Level 4 - Tomsk, Russia - Explosion
A pressure buildup led to an explosive mechanical failure in a 34 cubic meter stainless steel reaction vessel buried in a concrete bunker under building 201 of the radiochemical works at the Tomsk-7 Siberian Chemical Enterprise plutonium reprocessing facility. The vessel contained a mixture of concentrated nitric acid, uranium (8757 kg), plutonium (449 g) along with a mixture of radioactive and organic waste from a prior extraction cycle. The explosion dislodged the concrete lid of the bunker and blew a large hole in the roof of the building, releasing approximately 6 GBq of Pu 239 and 30 TBq of various other radionuclides into the environment. The contamination plume extended 28 km NE of building 201, 20 km beyond the facility property. The small village of Georgievka (pop. 200) was at the end of the fallout plume, but no fatalities, illnesses or injuries were reported. The accident exposed 160 on-site workers and almost two thousand cleanup workers to total doses of up to 50 mSv (the threshold limit for radiation workers is 100 mSv per 5 years)[25]. [26] [27]
June, 1999 — INES Level needed - Ishikawa Prefecture, Japan - Control rod malfunction
Operators attempting to insert one control rod during an inspection neglected procedure and instead withdrew three causing a 15 minute uncontrolled sustained reaction at the number 1 reactor of Shika Nuclear Power Plant. The Hokuriku Electric Company who owned the reactor did not report this incident and falsified records, covering it up until March, 2007. [28]
September 30, 1999 — INES Level 4 - Ibaraki Prefecture, Japan - Accidental criticality
Workers put uranyl nitrate solution containing about 16.6 kg of uranium, which exceeded the critical mass, into a precipitation tank at a uranium reprocessing facility in Tokai-mura northeast of Tokyo, Japan. The tank was not designed to dissolve this type of solution and was not configured to prevent eventual criticality. Three workers were exposed to (neutron) radiation doses in excess of allowable limits. Two of these workers died. 116 other workers received lesser doses of 1 mSv or greater though not in excess of the allowable limit. [29] [30][31] [32]
See also: Tokaimura nuclear accident and 5 yen coin
.
[edit]2000s

April 10, 2003 — INES Level 3 - Paks, Hungary - Fuel damaged
Partially spent fuel rods undergoing cleaning in a tank of heavy water ruptured and spilled fuel pellets at Paks Nuclear Power Plant. It is suspected that inadequate cooling of the rods during the cleaning process combined with a sudden influx of cold water thermally shocked fuel rods causing them to split. Boric acid was added to the tank to prevent the loose fuel pellets from achieving criticality. Ammonia and hydrazine were also added to absorb iodine-131. [33], [34]
April 19, 2005 — INES Level 3 - Sellafield, England, United Kingdom - Nuclear material leak
Twenty metric tons of uranium and 160 kilograms of plutonium dissolved in 83,000 litres of nitric acid leaked over several months from a cracked pipe into a stainless steel sump chamber at the Thorp nuclear fuel reprocessing plant. The partially processed spent fuel was drained into holding tanks outside the plant. [35].
November 2005 — INES Level needed - Braidwood, Illinois, United States - Nuclear material leak
Tritium contamination of groundwater was discovered at Exelon's Braidwood station. Groundwater off site remains within safe drinking standards though the NRC is requiring the plant to correct any problems related to the release.
March 6, 2006 — INES Level needed - Erwin, Tennessee, United States - Nuclear material leak
Thirty-five liters of a highly enriched uranium solution leaked during transfer into a lab at Nuclear Fuel Services Erwin Plant. The incident caused a seven-month shutdown and a required public hearing on the licensing of the plant.[36] [37]

^ [1] http://www.cns-snc.ca/history/nrx.html
^ [2] http://www.nuclearfaq.ca/cnf_sectionD.htm#x
^ [3] http://www.ccnr.org/paulson_legacy.html
^ [4] http://www.johnstonsarchive.net/nuclear/radevents/1958YUG1.html
^ [5] http://www.vin.bg.ac.rs/150/RB_Reactor.htm
^ [6] http://www.csirc.net/docs/reports/la-13638.pdf
^ [7] http://www.energy.ca.gov/nuclear/california.html
^ [8] http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=393948
^ [9] http://www.energy.ca.gov/nuclear/california.html
^ [10] http://hyperphysics.phy-astr.gsu.edu/hbase/nucene/nucacc.html#c1
^ [11] http://www10.antenna.nl/wise/index.html?http://www10.antenna.nl/wise/552/5297.html
^ [12] http://www.kare-uk.org/magnoxes.htm
^ [13] http://www.protectia-mediului.ro/en/nuclear/cernavoda2npp/hazards.html
^ [14]http://www-pub.iaea.org/MTCD/publications/PDF/cnpp2003/CNPP_Webpage/PDF/2002/Documents/Documents/Switzerland%202002.pdf
^ [15] http://www.iaea.org/inisnkm/index.html
^ [16] http://www.nrc.gov/reading-rm/doc-collections/fact-sheets/3mile-isle.html
^ [17] http://www.world-nuclear.org/info/inf36.htm
^ [18] http://www.nucleartourist.com/events/tmi.htm
^ [19] http://www.world-nuclear.org/info/inf06app.html
^ [20] http://www.nuclearfiles.org/menu/key-issues/nuclear-weapons/issues/accidents/accidents-1980's-01.htm
^ [21] http://www.fas.org/sgp/othergov/doe/lanl/la-3611.pdf
^ [22] http://www.nrc.gov/reading-rm/doc-collections/gen-comm/info-notices/1983/in83066s1.html
^ [23] http://www.nrc.gov/reading-rm/doc-collections/gen-comm/info-notices/1983/in83066s1.html
^ [24] http://www.antenna.nl/wise/326-7/3257.html
^ [25] http://www.ccohs.ca/oshanswers/phys_agents/ionizing.html
^ [26] http://www-pub.iaea.org/MTCD/publications/PDF/P060_scr.pdf
^ [27] http://news.bbc.co.uk/2/hi/science/nature/5165736.stm
^ [28] http://www.iht.com/articles/2007/03/15/business/nuke.php
^ [29] http://www.nytimes.com/2007/03/15/business/worldbusiness/15iht-nuke.4924774.html?_r=1
^ [30] http://www.uic.com.au/nip52.htm
^ [31] http://www.isis-online.org/publications/tokai.html
^ [32] http://news.bbc.co.uk/2/hi/science/nature/5165736.stm
^ [33] http://www.foxnews.com/story/0,2933,137875,00.html
^ [34] http://www.guardian.co.uk/elsewhere/journalist/story/0,7792,1347615,00.html
^ [35] http://www.neimagazine.com/story.asp?sectionCode=132&storyCode=2029958
^ [36] http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2007_register&docid=fr04my07-111
^ [37] http://www.nytimes.com/2007/07/05/us/06cnd-nuke.html
end quote

Also: It appears Little Known Rancho Seco Nuclear Power Plant almost melted down in 1979: Seen on Wiki on Nov 10, 2009 http://en.wikipedia.org/wiki/Rancho_Seco

Steam generator dry-out
On 20 March 1978 a failure of power supply for the plant's non-nuclear instrumentation system led to steam generator dryout. (ref NRC LER 312/78-001). In an on-going study (ref NRC Commission Document SECY-05-0192 Attachment 2 [1]) of "precursors" that could lead to a nuclear disaster if additional failures were to have occurred, the NRC concluded (as of 24-Oct-2005) that this event at Rancho Seco was the third highest ranked occurrence (second highest if one omits the event at the Three Mile Island Nuclear Generating Station).
When the reactor was at power, a failure of the NNI power supply resulted in a loss of main feedwater, which caused a reactor trip. Because instrumentation drift falsely indicated that the steam generator contained enough water, control room operators did not take prompt action to open the EFW flow control valves to establish secondary heat removal. This resulted in steam generator dryout.

This is a list of civilian nuclear incidents which are notable, but do not fit the criteria for inclusion in List of civilian nuclear accidents.

Military accidents are listed at List of military nuclear accidents. Civil radiation accidents not involving fissile material are listed at List of civilian radiation accidents. For a general discussion of both civilian and military accidents, see Nuclear and radiation accidents.
Contents [hide]
1 Scope of this article
2 1960s
3 1970s
4 2000s
5 See also
6 References
[edit]Scope of this article

In listing civilian nuclear incidents, the following criteria have been followed:
The event should involve fissile material or a reactor.
The incident must be related directly to radioactive material, not merely (for example) at a nuclear power plant.
To qualify as "civilian", the nuclear operation/material must be principally for non-military purposes.
The event must not qualify for the List of civilian nuclear accidents
See also: List of military nuclear accidents and List of civilian radiation accidents
[edit]1960s

November 1965
An operator error caused overheating and melting of some fuel in the Experimental Breeder Reactor-1 facility at the National Reacor Testing Station in Idaho. There was no raditaion release or exposure.[1]
[edit]1970s

22 March 1975 — Browns Ferry Nuclear Power Plant, AL, United States
A fire caused by careless technicians cut off many control circuits for two nuclear power reactors of the Tennessee Valley Authority at Browns Ferry Station in Alabama. The fire burned uncontrolled for 7.5 hours and the two operating GE nuclear reactors were at full power when the fire began. One of them went "dangerously out of control" for several hours and was not stabilized until a few hours after the fire was put out.[2] There was some concern about a meltdown, but this did not occur and there was no radioactive contamination.[3]
March 1977 — Toledo, OH, United States
An electromatic relief valve stuck open following a reactor scram at the Davis-Besse nuclear power plant near Toldedo, OH. The valve was noticed by operators, and the reactor, manufactured by Babcock & Wilcox, was only slightly damaged.[4]
[edit]2000s

See also: List of civilian nuclear accidents#2000s
9 February, 2002 —
Two workers were exposed to a small amount of radiation and suffered minor burns when a fire broke out at the Onagawa Nuclear Power Station Miyagi Prefecture, Japan. The fire occurred in the basement of reactor #3 during a routine inspection when a spray can was punctured accidentally, igniting a sheet of plastic.[5]
July, 2002 —
UK Authorities blamed an incident at a Scottish nuclear plant on "procedural and hardware deficiencies". Fuel rods falling to the floor were deemed responsible for the incident.[6]
9 August 2004 — Mihama Nuclear Power Plant, Japan
An incident occurred in a building housing turbines for the Mihama 3 reactor. Hot water and steam leaking from a broken pipe killed five workers and resulted in six others being injured. Officials insist that there was no radiation leak, and there is no danger to the surrounding area.[7]
September and October, 2005 — Dounreay, UK
In September, the site's cementation plant was closed when 266 litres of radioactive reprocessing residues were spilled inside containment.[8] In October, another of the site's reprocessing laboratories was closed down after nose-blow tests of eight workers tested positive for trace radioactivity.[9]
25 July, 2006 —
An electrical fault prompted shut down of the Forsmark Nuclear Power Plant, Sweden. Although there was no damage to the reactor, no radioactive release and no adverse health consequences, the incident highlighted potentially hazardous flaws in the site's reactor shutdown procedures, as well as two out of four German-built Siemens emergency coolant pumps failing.[10][11]
July, 2007 —
Hunterston B nuclear power station in the UK had to be shut down due to "problems with controls that keep the delicate process at exactly the right temperature".[12]
16 July, 2007 — Kashiwazaki-Kariwa Nuclear Power Plant, Japan
A 6.8 magnitude earthquake struck the Kashiwazaki-Kariwa nuclear plant. A small fire in a transformer was extinguished a few hours later. Several reactors were automatically closed down and as of April 2009 they have not been restarted. The quake was stronger than the reactors had been designed to withstand.[13]
November 28, 2007 — INES Level 2 - Tarragona, Spain - Nuclear material leak
Ascó Nuclear Power Plant told the Spanish Nuclear Board that about 200 thousand Bq were leaked to the atmosphere, due to a configuration failure in the ventilation systems. The incident was declared at INES level 1. However, the Spanish Nuclear Board realized there were leaked more than 80 millions Bq, and the incident was notified in April 2008. So the incident was updated to INES Level 2, the Nuclear Power Plant was fined with 15 millions euros and it manager removed.
4 June, 2008 — Krško Nuclear Power Plant, Slovenia - Loss of coolant
Emergency response system ECURIE (European Community Urgent Radiological Information Exchange) received an alert message following a loss of coolant accident at the Krsko Nuclear Power Plant.[14]
8 July, 2008, France — Nuclear material leak
A 6.25 m³ material leak is discovered on the Tricastin Nuclear Power Center, with 12g of uranium per litre (around 75kg in total). The Préfecture forbid the use of water, bath, nautical activities, fishing and irrigation in the Bollène area.[15]
23 July, 2008, France — Nuclear material leak
During a maintenance on the 4th reactor of the Tricastin Nuclear Power Center, a pipe was opened and low level radiation contaminated around 100 employees.[16]
[edit]See also

Criticality accident
International Nuclear Events Scale
List of Chernobyl-related articles
List of crimes involving radioactive substances
List of nuclear reactors · a comprehensive annotated list of the world's nuclear reactors
Nuclear debate
Nuclear power
Nuclear reactor technology
Radiation
[edit]References

^ "Three Mile Island (The Hour-By-Hour Account of What Really Happened)", by Mark Stephens, First Edition, page 75.
^ Vivian Weil, (1983). "The Browns Ferry Case" in Engineering Professionalism and Ethics, edited by James H. Schaub and Karl Pavlovic, and published by John Wiley & Sons.
^ "Three Mile Island (The Hour-By-Hour Account of What Really Happened)", by Mark Stephens, First Edition, page 76.
^ "Three Mile Island (The Hour-By-Hour Account of What Really Happened)", by Mark Stephens, First Edition, page 76.
^ Acusafe Incident News Summary
^ Safety flaws caused nuclear accident
^ Timeline: Nuclear plant accidents
^ Dounreay hit by radioactive spill
^ Fresh safety alert at Dounreay
^ Investigation into ”serious” fault at power station
^ SKI: Ingen risk för härdsmälta (Swedish)
^ Nuclear shutdown sparks energy fears
^ Further leaks at quake-hit Japanese nuclear plant
^ Briefing on Incident at Krsko Nuclear Power Plant on 4 June 2008
^ UNEP Year Book 2009 p. 18.
^ Will French Leaks Harm Nuclear's Revival?

List of military nuclear accidents

From Wikipedia, the free encyclopedia
This article lists notable military accidents involving nuclear material. Civilian accidents are listed at List of civilian nuclear accidents. For a general discussion of both civilian and military accidents, see nuclear and radiation accidents.
Contents [hide]
1 Scope of this article
2 1940s
3 1950s
4 1960s
5 1970s
6 1980s
7 1990s
8 2000s
9 See also
10 References
11 External links
[edit]Scope of this article

In listing military nuclear accidents, the following criteria have been adopted:
There must be well-attested and substantial health damage, property damage or contamination.
The damage must be related directly to radioactive material, not merely (for example) at a nuclear power plant.
To qualify as “military”, the nuclear operation/material must be principally for military purposes.
[edit]1940s

June 23, 1942 – Leipzig, Germany (then Third Reich) – steam explosion and reactor fire
Shortly after the Leipzig L-IV atomic pile — worked on by Werner Heisenberg and Robert Doepel — demonstrated Germany’s first signs of neutron propagation, the device was checked for a possible heavy water leak. During the inspection air leaked in igniting the uranium powder inside. The burning uranium boiled the water jacket, generating enough steam pressure to blow the reactor apart. Burning uranium powder scattered throughout the lab causing a larger fire at the facility.[1]

A sketch of Louis Slotin’s criticality accident used to determine exposure of those in the room at the time.
August 21, 1945 – Los Alamos National Laboratory, Los Alamos, New Mexico, USA – Accidental criticality
Harry K. Daghlian, Jr. dropped a tungsten carbide brick onto a plutonium core, inadvertently creating a critical mass at the Los Alamos Omega site. He quickly removed the brick, but was fatally irradiated, dying September 15.[2]
May 21, 1946 – Los Alamos National Laboratory, Los Alamos, New Mexico, USA – Accidental criticality
While demonstrating his technique to visiting scientists at Los Alamos, Canadian physicist Louis Slotin manually assembled a critical mass of plutonium. A momentary slip of a screwdriver caused a prompt critical reaction. Slotin died on May 30 from massive radiation poisoning, with an estimated dose of 1,000 rads (rad), or 10 grays (Gy). Seven observers, who received doses as high as 166 rads, survived.[3] Both men, Daghlian and Slotin, were working with the same bomb core which was known as the “demon core”.
[edit]1950s

February 13, 1950 – British Columbia, Canada – Non-nuclear detonation of a simulated atomic bomb
A USAF B-36 bomber, AF Ser. No. 44-92075, was flying a simulated combat mission from Eielson Air Force Base, near Fairbanks, Alaska, to Carswell Air Force Base in Fort Worth, Texas carrying one weapon containing a dummy warhead. The warhead contained uranium instead of plutonium. After six hours of flight, the bomber experienced mechanical problems and was forced to shut down three of its engines at an altitude of 12,000 feet (3,700 m). Fearing that severe weather and icing would jeopardize a safe emergency landing, the weapon was jettisoned over the Pacific Ocean from a height of 8,000 ft (2,400 m). The weapon’s high explosives detonated upon impact. All of the sixteen crew members and one passenger were able to parachute from the plane and twelve were subsequently rescued from Princess Royal Island. The Pentagon’s summary report does not mention if the weapon was later recovered.[4]
April 11, 1950, – Albuquerque, New Mexico, USA – Loss and recovery of nuclear materials
Three minutes after departure from Kirtland Air Force Base in Albuquerque a USAF B-29 bomber carrying a nuclear weapon, four spare detonators, and a crew of thirteen crashed into a mountain near Manzano Base. The crash resulted in a fire which the New York Times reported as being visible from 15 miles (24 km) The bomb’s casing was completely demolished and its high explosives ignited upon contact with the plane’s burning fuel. However, according to the Department of Defense, the four spare detonators and all nuclear components were recovered. A nuclear detonation was not possible because, while on board, the weapon’s core was not in the weapon for safety reasons. All thirteen crew members died.[4]
July 13, 1950; Lebanon, Ohio, USA – Non-nuclear detonation of an atomic bomb
USAF B-50 aircraft on a training mission from Biggs Air Force Base with a nuclear weapon flew into the ground. High explosive detonation, but no nuclear explosion.[5]
November 10, 1950 – Rivière du Loup, Québec, Canada – Non-nuclear detonation of an atomic bomb
Returning one of several U.S. Mark 4 nuclear bombs secretly deployed in Canada, a USAF B-50 had engine trouble and jettisoned the weapon at 10,500 feet (3,200 m). The crew set the bomb to self-destruct at 2,500 ft (760 m) and dropped over the St. Lawrence River. The explosion shook area residents and scattered nearly 100 pounds (45 kg) of depleted uranium used in the weapon's tamper. The plutonium core (“pit”) was not in the bomb at the time.[6]

The Castle Bravo fallout pattern.
March 1, 1954 – Bikini Atoll, Republic of the Marshall Islands (then Trust Territory of the Pacific Islands) – Nuclear test accident
During the Castle Bravo test of the first deployable hydrogen bomb, a miscalculation resulted in the explosion being over twice as large as predicted, with a total explosive force of 15 megatons of TNT (63 PJ). Of the total yield, 10 Mt (42 PJ) were from fission of the natural uranium tamper, but those fission reactions were quite dirty, producing a large amount of fallout. Combined with the much-larger-than-expected yield and an unanticipated wind shift radioactive fallout was spread eastward onto the inhabited Rongelap and Rongerik Atolls. These islands were evacuated, but many of the Marshall Islands natives have since suffered from birth defects and have received some compensation from the federal government. A Japanese fishing boat, Daigo Fukuryu Maru, also came into contact with the fallout, which caused many of the crew to take ill with one fatality. The test resulted in an international uproar and reignited Japanese concerns about radiation, especially with regard to the possible contamination of fish.
November 29, 1955 – Idaho, USA – Partial meltdown
Operator error led to a partial core meltdown in the experimental EBR-I breeder reactor, resulting in temporarily elevated radioactivity levels in the reactor building and necessitating a significant repair.[7][8]
March 10, 1956 – Over the Mediterranean Sea – nuclear weapons lost
A USAF B-47 Stratojet disappeared before a scheduled refueling, while carrying two nuclear weapon cores. The plane was lost while flying through dense clouds, and the cores and other wreckage were never located.[9][10]
July 27, 1956 – Lakenheath in Suffolk, UK – Nuclear weapons damaged
A USAF B-47 crashed into a storage igloo spreading burning fuel over three Mark 6 nuclear bombs at RAF Lakenheath. A bomb disposal expert stated it was a miracle exposed detonators on one bomb did not fire, which presumably would have released nuclear material into the environment.[11]
July 28, 1957 – Atlantic Ocean – Two weapons jettisoned and not recovered
A USAF C-124 aircraft from Dover Air Force Base, Delaware was carrying three nuclear bombs over the Atlantic Ocean when it experienced a loss of power. The crew jettisoned two nuclear bombs to protect their safety, which were never recovered.[5]
September 11, 1957 – Rocky Flats Plant, Golden, Colorado, USA – Fire, release of nuclear materials
A fire began in a materials handling glove box and spread through the ventilation system into the stack filters at the Rocky Flats weapons mill 27 kilometres (17 mi) from Denver, Colorado. Plutonium and other contaminants were released, but the exact amount of which contaminants is unknown; estimates range from 25 mg to 250 kg.[12][13][14][15]
September 29, 1957 – Kyshtym, Chelyabinsk Oblast, Russia (then USSR) – Explosion, release of nuclear materials
See Kyshtym disaster. A cooling system failure at the Mayak nuclear processing plant resulted in a major explosion and release of radioactive materials. Hundreds of people died and hundreds of thousands were evacuated.[16]
October 8–12, 1957 – Sellafield, Cumbria, UK – Reactor core fire
See Windscale fire. Technicians mistakenly overheated Windscale Pile No. 1 during an annealing process to release Wigner energy from graphite portions of the reactor. Poorly placed temperature sensors indicated the reactor was cooling rather than heating. The excess heat lead to the failure of a nuclear cartridge, which in turn allowed uranium and irradiated graphite to react with air. The resulting fire burned for days, damaging a significant portion of the reactor core. About 150 burning fuel cells could not be lifted from the core, but operators succeeded in creating a firebreak by removing nearby fuel cells. An effort to cool the graphite core with water eventually quenched the fire. The reactor had released radioactive gases into the surrounding countryside, primarily in the form of iodine-131 (131I). Milk distribution was banned in a 200-square-mile (520 km2) area around the reactor for several weeks. A 1987 report by the National Radiological Protection Board predicted the accident would cause as many as 33 long-term cancer deaths, although the Medical Research Council Committee concluded that “it is in the highest degree unlikely that any harm has been done to the health of anybody, whether a worker in the Windscale plant or a member of the general public.” The reactor that burned was one of two air-cooled graphite-moderated natural uranium reactors at the site used for production of plutonium.[17][18][19]
October 11, 1957 – Homestead Air Force Base, Florida – nuclear bomb burned after B-47 aircraft accident[20]
B-47 aircraft crashed during take-off after a wheel exploded; one nuclear bomb burned in the resulting fire.
January 31, 1958 – Morocco – Nuclear bomb damaged in crash[20]
During a simulated takeoff a wheel casting failure caused the tail of a USAF B-47 carrying an armed nuclear weapon to hit the runway, rupturing a fuel tank and sparking a fire. Some contamination was detected immediately following the accident.[21][22]
February 5, 1958 – Savannah, Georgia, USA – Nuclear bomb lost
See Tybee Bomb. A USAF B-47 bomber jettisoned a Mark 15 Mod 0 nuclear bomb over the Atlantic Ocean after a midair collision with a USAF F-86 Sabre during a simulated combat mission from Homestead Air Force Base, Florida. The F-86’s pilot ejected and parachuted to safety. The USAF claimed the B-47 tried landing at Hunter Air Force Base, Georgia three times before the bomb was jettisoned at 7,200 ft (2,200 m) near Tybee Island, Georgia. The B-47 pilot maintains he successfully landed in one attempt only after he first jettisoned the bomb. A 3-square-mile (7.8 km2) area near Wassaw Sound was searched for 9 weeks before the search was called off. The bomb was searched for in 2001 and not found. A new group in 2004 claims to have found an underwater object which it thinks is the bomb.[23]
March 11, 1958 – Florence, South Carolina, USA – Non-nuclear detonation of a nuclear bomb
A USAF B-47 bomber flying from Hunter Air Force Base in Savannah, Georgia accidentally released a nuclear bomb after the bomb lock failed. The chemical explosives detonated on impact in the suburban neighborhood of Florence, South Carolina. Radioactive substances were flung across the area. Several minor injuries resulted and the house on which the bomb fell was destroyed. No radiation sickness occurred.
June 16, 1958 – Oak Ridge, Tennessee, USA – Accidental criticality
A supercritical portion of highly enriched uranyl nitrate was allowed to collect in the drum causing a prompt neutron criticality in the C-1 wing of building 9212 at the Oak Ridge National Laboratory Y-12 complex. It is estimated that the reaction produced 1.3 * 1018 fissions. Eight employees were in close proximity to the drum during the accident, receiving neutron doses ranging from 30 to 477 rems. No fatalities were reported.[24]
December 30, 1958 – Los Alamos, New Mexico, USA – Accidental criticality
During chemical purification a critical mass of a plutonium solution was accidentally assembled at Los Alamos National Laboratory. The crane operator died of acute radiation sickness. The March, 1961 Journal of Occupational Medicine printed a special supplement medically analyzing this accident. Hand-manipulations of critical assemblies were abandoned as a matter of policy in U.S. federal facilities after this accident.[24]
November 20, 1959 – Oak Ridge, Tennessee, USA – Explosion
A chemical explosion occurred during decontamination of processing machinery in the radiochemical processing plant at Oak Ridge National Laboratory in Tennessee . (Report ORNL-2989, Oak Ridge National Laboratory). The accident resulted in the release of about 15 grams (0.53 oz) of 239Pu.
[edit]1960s

June 7, 1960 – New Egypt, New Jersey, USA – Nuclear warhead damaged by fire
A helium tank exploded and ruptured the fuel tanks of a USAF BOMARC-A surface-to-air missile at McGuire Air Force Base, New Jersey. The fire destroyed the missile, and contaminated the area directly below and adjacent to the missile.[22]
October 13, 1960 – Barents Sea, Arctic Ocean – Release of nuclear materials
A leak developed in the steam generators and in a pipe leading to the compensator reception on the ill-fated K-8 while the Soviet Northern Fleet November-class submarine was on exercise. While the crew rigged an improvised cooling system, radioactive gases leaked into the vessel and three of the crew suffered visible radiation injuries according to radiological experts in Moscow. Some crew members had been exposed to doses of up to 1.8 - 2 Sv (180 - 200 rem).[25]

SL-1 reactor being removed from the National Reactor Testing Station.
January 3, 1961 – National Reactor Testing Station, Idaho, USA – Accidental criticality, steam explosion
During maintenance procedures the SL-1 experimental nuclear reactor underwent a prompt critical reaction causing the water surrounding the core to explosively vaporize. A pressure wave struck the top of the reactor vessel propelling the control rods and entire reactor vessel upwards. One operator who had been standing on top of the vessel was killed when flying control rods pinned him to the ceiling. Two other military personnel supervising the maintenance operations were also killed. See SL-1.
January 24, 1961 – Goldsboro B-52 crash – Physical destruction of a nuclear bomb, loss of nuclear materials
A USAF B-52 bomber caught fire and exploded in midair due to a major leak in a wing fuel cell 12 miles (19 km) north of Seymour Johnson Air Force Base, North Carolina. Five crewmen parachuted to safety, but three died—two in the aircraft and one on landing. The incident released the bomber’s two Mark 39 hydrogen bombs. Three of the four arming devices on one of the bombs activated, causing it to carry out many of the steps needed to arm itself, such as the charging of the firing capacitors and, critically, the deployment of a 100-foot (30 m) diameter retardation parachute. The parachute allowed the bomb to hit the ground with little damage. The fourth arming device — the pilot’s safe/arm switch — was not activated preventing detonation. The second bomb plunged into a muddy field at around 700 mph (300 m/s) and disintegrated. Its tail was discovered about 20 feet (6 m) down and much of the bomb recovered, including the tritium bottle and the plutonium. However, excavation was abandoned due to uncontrollable ground water flooding. Most of the thermonuclear stage, containing uranium, was left in situ. It is estimated to lie around 180 feet (55 m) below ground. The Air Force purchased the land and fenced it off to prevent its disturbance, and it is tested regularly for contamination, although none has so far been found.[26]
March 14, 1961 – 1961 Yuba City B-52 crash
USAF B-52 bomber experienced a decompression event that required it to fly below 10,000 feet. Resulting increased fuel consumption led to fuel exhaustion; the aircraft crashed with two nuclear bombs, which did not trigger a nuclear explosion.
July 4, 1961 – coast of Norway – Near meltdown
The Soviet Hotel-class submarine K-19 suffered a failure in its cooling system. Reactor core temperatures reached 800 °C (1,000 °F), nearly enough to melt the fuel rods, although the crew was able to regain temperature control by using emergency procedures. The incident contaminated parts of the ship, some of the onboard ballistic missiles and the crew, resulting in several fatalities. The movie K-19: The Widowmaker, starring Harrison Ford and Liam Neeson, offers a controversially fictionalized story of these events.
May 1, 1962 - Sahara desert, French Algeria - Accidental venting of underground nuclear test
The second French underground nuclear test, codenamed Béryl, took place in a shaft under mount Taourirt, near In Ecker, 150 km (100 mi) north of Tamanrasset, Algerian Sahara. Due to improper sealing of the shaft, a spectacular flame burst through the concrete cap and radioactive gases and dust were vented into the atmosphere. The plume climbed up to 2600m (8500 ft) high and radiation was detected hundreds of km away. About a hundred soldiers and officials, including two ministers, were irradiated. The number of contaminated Algerians is unknown.
January 13, 1964 – Salisbury, Pennsylvania and Frostburg, Maryland, USA – Accidental loss and recovery of thermonuclear bombs
A USAF B-52 on airborne alert duty encountered a severe winter storm and extreme turbulence, ultimately disintegrating in mid-air over South Central Pennsylvania[27]. Only the two pilots survived. One crew member failed to bail out and the rest succumbed to injuries or exposure to the harsh winter weather. A search for the missing weapons was initiated, and recovery was effected from portions of the wreckage at a farm northwest of Frostburg, MD.
April 21, 1964 – Indian Ocean – Launch failure of a RTG powered satellite
A U.S. Transit-5BN-3 nuclear-powered navigational satellite failed to reach orbital velocity and began falling back down at 150,000 feet (46 km) above the Indian Ocean. The satellite’s SNAP-9a generator contained 16 kCi (590 TBq) of 238Pu (2.1 pounds), which at least partially burned upon reentry. Increased levels of 238Pu were first documented in the stratosphere four months later. In the estimation of the EPA, there was little 238Pu contamination to human lungs (0.06 mrem or 0.6 µSv) compared to fallout from weapons tests in the 1950s (0.35 mrem or 3.5 µSv) or the EPA’s Clean Air Act airborne exposure limit of 10 mrem (100 µSv).[28][29] All subsequent Transit satellites were fitted with solar panels.
8 December 1964; Bunker Hill Air Force Base, USA – Fire, radioactive contamination
USAF B-58 aircraft carrying a nuclear weapon caught fire while taxiing. Nuclear weapon burned, causing contamination of the crash area.[5]
January 1965 – Livermore, California, USA – Release of nuclear materials
An accident at Lawrence Livermore National Laboratory released 300 kCi (11 PBq) of tritium gas. Subsequent study found this release was not likely to produce adverse health effects in the surrounding communities.[30]
11 October, 1965 – Rocky Flats Plant, Golden, Colorado, USA – Fire, exposure of workers
A fire at Rocky Flats exposed a crew of 25 to up to 17 times the legal limit for radiation.
December 5, 1965 – coast of Japan – Loss of a nuclear bomb
A U.S. Navy A-4E Skyhawk aircraft with one B43 nuclear bomb on board fell off the aircraft carrier Ticonderoga into 16,200 feet (4,900 m) of water while the ship was underway from Vietnam to Yokosuka, Japan. The plane, pilot and weapon were never recovered. There is dispute over exactly where the incident took place—the U.S. Defense Department originally stated it took place 500 miles (800 km) off the coast of Japan, but Navy documents later show it happened about 80 miles (130 km) from the Ryukyu Islands and 200 miles (320 km) from Okinawa.[31]
January 17, 1966 – Palomares incident – Accidental destruction, loss and recovery of nuclear bombs
A USAF B-52 carrying four hydrogen bombs collided with a USAF KC-135 jet tanker during over-ocean in-flight refueling. Four of the B-52's seven crew members parachuted to safety while the remaining three were killed along with all four of the KC-135’s crew. The conventional explosives in two of the bombs detonated upon impact with the ground, dispersing plutonium over nearby farms. A third bomb landed intact near Palomares while the fourth fell 12 miles (19 km) off the coast into the Mediterranean sea. The US Navy conducted a three month search involving 12,000 men and successfully recovered the fourth bomb. The U.S. Navy employed the use of the deep-diving research submarine DSV Alvin to aid in the recovery efforts. During the ensuing cleanup, 1,500 tonnes (1,700 short tons) of radioactive soil and tomato plants were shipped to a nuclear dump in Aiken, South Carolina. The U.S. settled claims by 522 Palomares residents for $600,000. The town also received a $200,000 desalinization plant. The motion picture Men of Honor (2000), starring Cuba Gooding, Jr. as USN Diver Carl Brashear, and Robert De Niro as USN Diver Billy Sunday, contained an account of the fourth bomb’s recovery.[32]
January 21, 1968 – 1968 Thule Air Base B-52 crash, Greenland – Loss and partial recovery of nuclear bombs
A fire broke out in the navigator’s compartment of a USAF B-52 near Thule Air Base, Greenland. The bomber crashed 7 miles (11 km) from the air base, rupturing its nuclear payload of four hydrogen bombs. The recovery and decontamination effort was complicated by Greenland's harsh weather. Contaminated ice and debris were buried in the United States. Bomb fragments were recycled by Pantex, in Amarillo, Texas. The incident caused outrage and protests in Denmark, as Greenland is a Danish possession and Denmark forbade nuclear weapons on its territory. Information declassified in 2008 confirms that one of the bombs remains unaccounted for.
May 24, 1968 – location unknown – loss of cooling, radioactive contamination, nuclear fuel damaged
During sea trials the Soviet nuclear submarine K-27 (Project 645) suffered severe problems with its reactor cooling systems. After spending some time at reduced power, reactor output inexplicably dropped and sensors detected an increase of gamma radiation in the reactor compartment to 150 rad/h. The safety buffer tank released radioactive gases further contaminating the submarine. The crew shut the reactor down and subsequent investigation found that approximately 20% of the fuel assemblies were damaged. The entire submarine was scuttled in the Kara Sea in 1981.
August 27, 1968 – Severodvinsk, Russia (then USSR) – Reactor power excursion, contamination
While in the naval yards at Severodvinsk for repairs Soviet Yankee-class nuclear submarine K-140 suffered an uncontrolled increase of the reactor’s power output. One of the reactors activated automatically when workers raised control rods to a higher position and power increased to 18 times normal, while pressure and temperature levels in the reactor increased to four times normal. The accident also increased radiation levels aboard the vessel. The problem was traced to the incorrect installation of control rod electrical cables.
May 11, 1969 – Rocky Flats Plant, Golden, Colorado, USA – Plutonium fire, contamination
An accident in which 5 kilograms of plutonium burnt inside a glovebox at Rocky Flats. Cleanup took two years and was the costliest industrial accident ever to occur in the United States at that time.[33][34][35]
[edit]1970s

April 12, 1970 – Bay of Biscay – Loss of a nuclear submarine
The Soviet November-class attack submarine K-8 sank with all 52 crew members after suffering fires in two compartments simultaneously. Both reactors were shut down. The crew attempted to hook a tow line to an Eastern Bloc merchant vessel, but failed.[36]

Baneberry's radioactive plume rises from a shock fissure. Contaminants were carried three different directions by the wind
December 18, 1970 – Nevada Test Site – Accidental venting of nuclear explosion
In Area 8 on Yucca Flat, the 10 kiloton "Baneberry" weapons test of Operation Emery detonated as planned at the bottom of a sealed vertical shaft 900 feet below the Earth's surface but the device's energy cracked the soil in unexpected ways, causing a fissure near ground zero and the failure of the shaft stemming and cap.[37] A plume of hot gases and radioactive dust was released three and a half minutes after ignition,[38] and continuing for many hours, raining fallout on workers within NTS. Six percent of the explosion's radioactive products were vented. The plume released 6.7 MCi of radioactive material, including 80 kCi of Iodine-131 and a high ratio of noble gases.[39] After dropping a portion of its load in the area, the hot cloud's lighter particles were carried to three altitudes and conveyed by winter storms and the jet stream to be deposited heavily as radionuclide-laden snow in Lassen and Sierra counties in northeast California, and to lesser degrees in northern Nevada, southern Idaho and some eastern sections of Oregon and Washington states.[40] The three diverging jet stream layers conducted radionuclides across the US to Canada, the Gulf of Mexico and the Atlantic Ocean.
December 12, 1971 – New London, Connecticut, USA – Spill of irradiated water
During the transfer of radioactive coolant water from the submarine USS Dace to the submarine tender USS Fulton 500 US gallons (1,900 l; 420 imp gal) were spilled into the Thames River (USA).
December 1972 – Pawling, New York, USA – Contamination
A major fire and two explosions contaminated the plant and grounds of a plutonium fabrication facility resulting in a permanent shutdown.
1975 – location unknown – Contamination
Radioactive resin contaminates the American Sturgeon-class submarine USS Guardfish after wind unexpectedly blows the powder back towards the ship. The resin is used to remove dissolved radioactive minerals and particles from the primary coolant loops of submarines. This type of accident was fairly common; however, U.S. Navy nuclear vessels no longer discharge resin at sea.
October 1975 – Apra Harbor, Guam – spill of irradiated water
While disabled, the submarine tender USS Proteus discharged radioactive coolant water. A Geiger counter at two of the harbor's public beaches showed 100 millirems/hour, fifty times the allowable dose.[citation needed]
August 1976 – Benton County, Washington, USA – Explosion, contamination of worker
An explosion at the Hanford site Plutonium Finishing Plant blew out a quarter-inch-thick lead glass window. Harold McCluskey, a worker, was showered with nitric acid and radioactive glass. He inhaled the largest dose of 241Am ever recorded, about 500 times the U.S. government occupational standards. The worker was placed in isolation for five months and given an experimental drug to flush the isotope from his body. By 1977, his body’s radiation count had fallen by about 80 percent. He died of natural causes in 1987 at age 75.[41]
1977 – coast of Kamchatka – loss and recovery of a nuclear warhead
The Soviet submarine K-171 accidentally released a nuclear warhead. The warhead was recovered after a search involving dozens of ships and aircraft.[42]
January 24, 1978 – North West Territories, Canada – spill of nuclear fuel
Cosmos 954, a Soviet Radar Ocean Reconnaissance Satellite with an onboard nuclear reactor, failed to separate from its booster and broke up on reentry over Canada. The fuel was spread over a wide area and some radioactive pieces were recovered. The Soviet Union eventually paid the Canadian Government $3 million CAD for expenses relating to the crash.
May 22, 1978 – near Puget Sound, Washington, USA – spill of irradiated water
A valve was mistakenly opened aboard the submarine USS Puffer releasing up to 500 US gallons (1,900 l; 420 imp gal) of radioactive water.
[edit]1980s

September 18, 1980 – At about 6:30 p.m., an airman conducting maintenance on a USAF Titan-II missile at Little Rock Air Force Base's Launch Complex 374-7 in Southside (Van Buren County), just north of Damascus, Arkansas, dropped a Socket wrench, which fell about eighty feet before hitting and piercing the skin on the rocket’s first-stage fuel tank, causing it to leak. At about 3:00 a.m., on September 19, 1980, the missile exploded. The W53 warhead landed about 100 feet (30 m) from the launch complex’s entry gate; its safety features operated correctly and prevented any loss of radioactive material. An Air Force airman was killed and the launch complex was destroyed.[43]
August 8, 1982 – While on duty in the Barents Sea, there was a release of liquid metal coolant from the reactor of the Soviet Project 705 Alfa-class submarine K-123. The accident was caused by a leak in the steam generator. Approximately two tons of metal alloy leaked into the reactor compartment, irreparably damaging the reactor such that it had to be replaced. It took nine years to repair the submarine.
January 3, 1983 – The Soviet nuclear-powered spy satellite Kosmos 1402 burns up over the South Atlantic.
August 10, 1985 – About 35 miles (56 km) from Vladivostok in Chazhma Bay, Soviet submarine K-431, a Soviet Echo-class submarine had a reactor explosion, producing fatally high levels of radiation. Ten men were killed, but the deadly cloud of radioactivity did not reach Vladivostok.[44]
1986 – The U.S. government declassifies 19,000 pages of documents indicating that between 1946 and 1986, the Hanford Site in Richland, Washington, released thousands of US gallons (several m³) of radioactive liquids. Of 270,000 people living in the affected area, most received low doses of radiation from 131I.
October 3, 1986 – 480 miles (770 km) east of Bermuda, K-219, a Soviet Yankee I-class submarine experienced an explosion in one of its nuclear missile tubes and at least three crew members were killed. Sixteen nuclear missiles and two reactors were on board. Soviet leader Mikhail Gorbachyov privately communicated news of the disaster to U.S. President Ronald Reagan before publicly acknowledging the incident on October 4. Two days later, on October 6, the submarine sank in the Atlantic Ocean while under tow in 18,000 feet (5,500 m) of water.[45]
October 1988 – At the nuclear trigger assembly facility at Rocky Flats in Colorado, two employees and a D.O.E. inspector inhale radioactive particles, causing closure of the plant. Several safety violations were cited, including uncalibrated monitors, inadequate fire equipment, and groundwater contaminated with radioactivity.
[edit]1990s

1997 – Georgian soldiers suffer radiation poisoning and burns. They are eventually traced back to training sources abandoned, forgotten, and unlabeled after the collapse of the Soviet Union. One was a 137Cs pellet in a pocket of a shared jacket which put out about 130,000 times the level of background radiation at 1 meter distance.[46]
[edit]2000s

February 2003: Oak Ridge, Tennessee Y-12 facility. During the final testing of a new saltless uranium processing method, there was a small explosion followed by a fire. The explosion occurred in an unvented vessel containing unreacted calcium, water and depleted uranium. An exothermic reaction among these articles generated enough steam to burst the container. This small explosion breached its glovebox, allowing air to enter and ignite some loose uranium powder. Three employees were contaminated. BWXT, a partnership of BWX Technologies and Bechtel National, was fined $82,500 for the accident.[47]
[edit]See also

List of civilian nuclear accidents
International Nuclear Event Scale
List of disasters
Nuclear weapons
List of nuclear reactors - a comprehensive annotated list of the world's nuclear reactors
Radiation
United States military nuclear incident terminology
List of accidents and incidents involving military aircraft
[edit]References

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^ "Harry K. Daghlian, Jr.: America's First Peacetime Atom Bomb Fatality". Retrieved 2007-06-17.
^ U.S. National Atomic Museum (1995-06-01). "Trinity Atomic Bomb". Retrieved 2007-06-17.
^ a b Tiwari J, Gray CJ. "U.S. Nuclear Weapons Accidents". Retrieved 2007-06-17.
^ a b c HR Lease (March 1986). "DoD Mishaps". Armed Forces Radiobiology Research Institute. Retrieved 2008-12-04.
^ Norris RS, Arkin WM, Burr W (1999). "Where they were". Bulletin of the Atomic Scientists 55 (6): 26–35. doi:10.2968/055006011.
^ Rohrig ND (2004-09-09). "Dose Reconstruction Project for NIOSH". Retrieved 2007-06-17.
^ "Industrial/Warnings of Serious Risks for Nuclear Reactor Operations". Retrieved 2007-06-17.
^ "Broken Arrow Nuclear Weapon Accidents". Retrieved 2008-11-29.
^ "Broken Arrow B-47". Retrieved 2008-11-29.
^ "nh4_1.gif". Retrieved 2007-06-17.
^ "A Brief History of Nuclear Fission and its Opposition". Retrieved 2007-06-17.
^ "1957 Fire". Citizen Summary: Rocky Flats Historical Public Exposures Studies. Retrieved 2007-06-17.
^ Rood AS, Grogan HA. "Estimated Exposure and Lifetime Cancer Incidence Risk from Plutonium Released from the 1957 Fire at the Rocky Flats Plant". RAC Report No. 2-CDPHE-RFP-1999-FINAL. Retrieved 2007-06-17.
^ Wasserman H, Solomon N. Bomb Production at Rocky Flats: Death Downwind. In: Killing Our Own: The Disaster of America's Experience with Atomic Radiation. Delta. ISBN 0-440-54566-6. Retrieved 2007-06-17.
^ "Ural Mountains Nuclear Waste". Retrieved 2007-06-17.
^ "Windscale Nuclear Incident". The Virtual Nuclear Tourist. 2005-12-22. Retrieved 2007-06-17.
^ "The 1957 Windscale Fire". Retrieved 2007-06-17.
^ "Sellafield". United Kingdom Nuclear Forces. 2005-04-28. Retrieved 2007-06-17.
^ a b "Narrative Summary of Accidents Involving U.S. Nuclear Weapons 1950-1980". United States Department of Defence. April 1981. Retrieved 2009-04-23.
^ "U.S. Department of Defense Nuclear Weapons Accident 1950-1980: Introduction". The Defense Monitor. 1981. ISSN 0195-6450. Retrieved 2007-06-17.
^ a b "Broken Arrows". United Kingdom Nuclear Forces. 2005-04-28. Retrieved 2007-06-17.
^ CNN (2004-09-13). "Lost nuclear bomb possibly found: Device dropped in ocean off Georgia during Cold War". CNN.com. Retrieved 2007-06-17.
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^ "K-8 submarine reactor accident, 1960". Database of radiological incidents and related events—Johnston's Archive. 2004-06-10. Retrieved 2007-06-17.
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^ Grossman K (1997). "The Wrong Stuff: Plutonium in Space - Racism and Corporate Interests" ([dead link] – Scholar search). Earth Island Journal 12 (4).
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^ CNN (1998). "Cold War: Broken Arrows (1960e)". CNN.com. Retrieved 2007-06-17.
^ http://www.iht.com/articles/2008/09/11/europe/journal.php
^ Snider, Laura (2009-05-10). "Looking back on Mother's Day fire at Rocky Flats". Boulder & County News. Boulder Daily Camera. Retrieved 2009-07-26. "On Mother's Day in 1969… the worst industrial conflagration the country had ever seen… when Building 776-777 on the Rocky Flats campus eight miles south of Boulder caught fire…"
^ Greenlee, Robert (2008-04-24). "Flats Colorado.pdf Rocky Flats Colorado Nuclear Weapons Production Facility 1952 - 1988" (PDF). ME 360L - Mechanical Engineering Design III. University of New Mexico. Retrieved 2009-07-26. "1969 Fire … * Most costly industrial accident in US * 2 years to cleanup"
^ Moore, LeRoy (2006-January). "Guilt or innocence at Rocky Flats" (PDF). NUCLEAR NEXUS » Local Hazards » Rocky Flats. Rocky Mountain Peace and Justice Center. Retrieved 2009-07-26. "A fire at Rocky Flats on Mother’s Day, May 11, 1969, turned out to be the worst industrial fire to date in US history."
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^ Lawrence Livermore National Laboratory. News Archive. Tarabay H. Antoun. Three Dimensional Simulation of the Baneberry Nuclear Event
^ University of Las Vegas. Nevada Test Site Oral History Project. Clifford Olsen (interviewed September 20, 2004)
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^ Parson P (2004-06-11). "BWXT Y-12 fined for explosion, fire". The Oak Ridger. Retrieved 2007-06-17.
[edit]External links

ProgettoHumus: From Trinity Test to… List of nuclear explosions in the world
ProgettoHumus List of all nuclear accidents in the history (updated)
Bibliography of military nuclear accidents from the Alsos Digital Library for Nuclear Issues
Official List of accidents involving nuclear weapons from the UK Ministry of Defence
Schema-root.org: Nuclear Power Accidents 2 topics, both with a current news feed
US Nuclear Regulatory Commission (NRC) website with search function and electronic public reading room
International Atomic Energy Agency website with extensive online library
Concerned Citizens for Nuclear Safety Detailed articles on nuclear watchdog activities in the US
World Nuclear Association: Radiation Doses Background on ionizing radiation and doses
Canadian Centre for Occupational Health & Safety More information on radiation units and doses.
Radiological Incidents Database Extensive, well-referenced list of radiological incidents.
[1] Bellona's listing of accidents of Soviet / Russian submarines, a fair number of which are nuclear powered. Currently not many are included in the list above.
20 Mishaps That Might Have Started Accidental Nuclear War A handy (if somewhat chilling) list of close calls.
US Nuclear Weapons Accidents list published by the Center for Defense Information (CDI)
Trinity Atomic Bomb by U.S. National Atomic Museum

Nuclear powered submarines have suffered a number of accidents (not all related to the power supply).

K-19, 1961, the reactor almost had a meltdown and exploded. Several of the crew died of radiation exposure. The events on board the submarine are dramatized by the film K-19: The Widowmaker.
USS Thresher (SSN-593), 1963, was lost during deep diving tests and later investigation concluded that failure of a brazed pipe joint and ice formation in the ballast blow valves prevented surfacing. The accident motivated a number of safety changes to the US fleet.
USS Scorpion (SSN-589), 1968, lost.
K-27, 1968, experienced a near meltdown of one of its liquid metal (lead-bismuth) cooled VT-1 reactors, causing the ship to be deactivated by 20 July 1968.
K-219, 1986, the reactor almost had a meltdown. Sergei Preminin died after he manually lowered the control rods, and stopped the explosion. The submarine sank three days later.
K-141 Kursk, 2000, the generally accepted theory is that a leak of hydrogen peroxide in the forward torpedo room led to the detonation of a torpedo warhead, which in turn triggered the explosion of half a dozen other warheads about two minutes later.
USS San Francisco (SSN-711), 2005, collided with a seamount in the Pacific Ocean.
HMS Vanguard & Le Triomphant, February 2009, the French and British submarines collided in the Atlantic while on routine patrols. There were no injuries among the crews, but both ships were damaged during the collision. The chair of the Campaign for Nuclear Disarmament, Kate Hudson, said "the dents reportedly visible on the British sub show the boats were no more than a couple of seconds away from total catastrophe."[10]

Nuclear Weapons Testing

http://en.wikipedia.org/wiki/Nuclear_testing

Nuclear tests can involve many hazards. A number of these were illustrated in the U.S. Castle Bravo test in 1954. The weapon design tested was a new form of hydrogen bomb, and the scientists underestimated how vigorously some of the weapon materials would react. As a result, the explosion – with a yield of 15 Mt – was over twice what was predicted. Aside from this problem, the weapon also generated a large amount of radioactive nuclear fallout, more than had been anticipated, and a change in the weather pattern caused the fallout to be spread in a direction which had not been cleared in advance. The fallout plume spread high levels of radiation for over a hundred miles, contaminating a number of populated islands in nearby atoll formations (though they were soon evacuated, many of the islands' inhabitants suffered from radiation burns and later from other effects such as increased cancer rate and birth defects), as well as a Japanese fishing boat (Daigo Fukuryū Maru). One member of the boat's crew died from radiation sickness after returning to port, and it was feared that the radioactive fish they had been carrying had made it into the Japanese food supply.

Because of concerns about worldwide fallout levels, the Partial Test Ban Treaty was signed in 1963. Above are the per capita thyroid doses (in rads) in the continental United States resulting from all exposure routes from all atmospheric nuclear tests conducted at the Nevada Test Site from 1951-1962.
Castle Bravo was the worst U.S. nuclear accident, but many of its component problems – unpredictably large yields, changing weather patterns, unexpected fallout contamination of populations and the food supply – occurred during other atmospheric nuclear weapons tests by other countries as well. Concerns over worldwide fallout rates eventually led to the Partial Test Ban Treaty in 1963, which limited signatories to underground testing. Not all atmospheric tests stopped, however, but because the United States and the Soviet Union in particular stopped testing above ground it cut the number of atmospheric tests down substantially, because about 86% of all nuclear tests were conducted by those two countries. France continued atmospheric testing until 1974, and People's Republic of China until 1980.

Radioactive fallout was spread eastward onto the inhabited Rongelap and Rongerik atolls which were tardily evacuated [5]. Subsequently many Marshall Islands natives have suffered from birth defects and have received some compensation from the U.S. Federal government. A medical study, named Project 4.1, studied the effects of the fallout on the blast.[6]

300px-Castle_Bravo_fish_contamination_map.png
Map showing points (X) where contaminated fish were caught or where the sea was found to be excessively radioactive. B=original "danger zone" around Bikini announced by the U.S. government. W="danger zone" extended later. xF=position of the Lucky Dragon fishing boat. NE, EC, and SE are equatorial currents.
Although the atmospheric fallout plume drifted eastward, once fallout landed in the water it was carried in several directions by ocean currents, including northwest and southwest.[7]
A Japanese fishing boat, Lucky Dragon No. 5, came in direct contact with the fallout which caused many of the crew to grow ill; one eventually died. This resulted in an international uproar and reignited Japanese concerns about radiation, especially in regard that Japanese citizens were once more affected by U.S. nuclear weapons. The official U.S. line had been that the growth in the strength of atomic bombs was not accompanied by an equivalent growth in radiation released. Japanese scientists who had collected data from the fishing vessel disagreed with this. Sir Joseph Rotblat, working at St Bartholomew's Hospital, London, demonstrated that the contamination caused by the fallout from the test was far greater than that stated officially. Rotblat was able to deduce that the bomb had three stages and showed that the fission phase at the end of the explosion increased the amount of radioactivity a thousandfold. Rotblat's paper was taken up by the media, and the outcry in Japan reached such a level that diplomatic relations became strained and the incident was even dubbed by some as "a second Hiroshima".[8] Nevertheless, the Japanese and U.S. governments quickly reached a political settlement which gave the fishery a compensation of 2 million dollars with the surviving victims receiving about ¥ 2 million each (US$ 5,550 in 1954, US$ 44000.12 in 2009[9]).[10] It was also agreed that the victims would not be given Hibakusha status.
Unanticipated fallout and radiation also affected many of the vessels and personnel involved in the test, in some cases trapping them in bunkers. One prominent scientist later recalled that he was on a ship 30 miles (48 km) away, and received 10 Röntgen of radiation as a result. Sixteen crew members of the aircraft carrier USS Bairoko received beta burns and there was an increased cancer rate. Radioactive contamination also affected many of the testing facilities built on other islands of the Bikini atoll system.
The fallout spread traces of radioactive material as far as Australia, India and Japan, and even the US and parts of Europe. Though organized as a secret test, Castle Bravo quickly became an international incident, prompting calls for a ban on the atmospheric testing of thermonuclear devices.[11]

Fallout patterns from US nuclear testing are here:

http://www.idealist.ws/maps.php

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Worst Nuclear Disasters of All Time

Incident: INES Scale:
Chernobyl - 7
Khyshtym - 6
Mayak - 6
Windscale - 5
Three Mile Island - 5
Saint Laurant Des Eaux - 4
Tokaimura - 4
Simi Valley - 4

radioactivity was released outside of the plant:
Braidwood, IL (2005) - ?
Erwin, TN (2006) - ?

getfile.php?f=Radioactive_fall-out_from_the_Chernobyl_accident.jpg

Worst disaster: Chernobyl

Second Worst Nuclear Accident in the World by INES rating:

The Kyshtym disaster was a radiation contamination disaster, which happened on 29 September 1957, in Mayak, a nuclear fuel reprocessing plant in Russia (then a part of the Soviet Union). It measured as a Level 6 disaster on the International Nuclear Event Scale (the Chernobyl disaster is the only accident listed as more serious than this one). The event occurred in the town of Ozyorsk, a closed city in the USSR built around Mayak. Since Ozyorsk/Mayak (also known as Chelyabinsk-40 and Chelyabinsk-65) were not marked on maps, the disaster was named for Kyshtym, the nearest known town.
Contents [hide]
1 Background
2 Explosion
3 Aftermath
4 Current situation
5 See also
6 Notes
[edit]Background

After the Second World War the Soviet Union lagged behind the United States in development of nuclear weapons, so it started a rapid research and development program to produce a sufficient amount of weapons-grade uranium and plutonium. The Mayak plant was built in a great hurry between 1946 and 1950. Gaps in knowledge of Soviet physicists about nuclear physics at the time made it difficult to judge the safety of many decisions. Also, environmental concerns were not taken seriously during the early development stage. Initially Mayak was dumping high-level radioactive waste into a nearby river, which was taking waste to the river Ob, flowing farther down to the Arctic Ocean. Later on, Lake Karachay was used for open-air storage.[1]
A storage facility for liquid nuclear waste was added around 1953. It consisted of steel tanks mounted in a concrete base, 8.2 meters underground. Because of the high level of radioactivity, the waste was heating itself (though a chain reaction was not possible). For that reason, a cooler was built around each bank containing 20 tanks. Facilities for monitoring operation of the coolers and the content of the tanks were not adequate.[2]
[edit]Explosion

In September 1957 the cooling system in one of the banks containing about 70-80 tons of radioactive waste failed, and the temperature in it started to rise, resulting in a non-nuclear explosion of the dried waste having a force estimated at about 70-100 tons of TNT, which threw the concrete lid, weighing 160 tons, into the air.[2] There were no immediate casualties as a result of the explosion, which released some 740 PBq (20 MCi) of radioactivity.[1][3].
In the next 10 to 11 hours the radioactive cloud moved towards the northeast, reaching 300-350 kilometers from the accident. The fallout of the cloud resulted in a long-term contamination of an area of more than 800 square kilometers, primarily with caesium-137 and strontium-90.[1] This area is usually referred to as the East-Ural Radioactive Trace (EURT).
[edit]Aftermath

Because of the secrecy surrounding Mayak, the population of affected areas were not initially informed of the accident. A week later (on 6 October) an operation for evacuating 10,000 people from the affected area started, still without giving an explanation of the reasons for evacuation. People "grew hysterical with fear with the incidence of unknown 'mysterious' diseases breaking out. Victims were seen with skin 'sloughing off' their faces, hands and other exposed parts of their bodies."[4] It was Zhores Medvedev who revealed the nature and extent of the disaster to the world.
Even though the Soviet government suppressed information about the figures, it is estimated that the direct exposure to radiation caused at least 200 cases of death from cancer.[5]
To reduce the spread of radioactive contamination after the accident, contaminated soil was excavated and stockpiled in fenced enclosures that were called "graveyards of the earth".[6]
The Soviet government in 1968 disguised the EURT area by creating the East-Ural Nature Reserve, which prohibited any unauthorised access to the affected area.
Rumours of a nuclear mishap somewhere in the vicinity of Chelyabinsk had long been circulating in the West. That there had been a serious nuclear accident west of the Urals was eventually inferred from research on the effects of radioactivity on plants, animals, and ecosystems, published by Professor Leo Tumerman, former head of the Biophysics Laboratory at the Institute of Molecular Biology in Moscow, and associates.
According to Gyorgy,[7] who invoked the Freedom of Information Act to gain access to the relevant Central Intelligence Agency (CIA) files, the CIA knew of the 1957 Mayak accident all along, but kept it secret to prevent adverse consequences for the fledgling American nuclear industry. Only in 1990 did the Soviet government declassify documents pertaining to the disaster.[8]
[edit]Current situation

The level of radiation in Ozyorsk itself is claimed to be safe for humans, but the area of EURT is still heavily contaminated with radioactivity.[5]

The Mayak disasters:

Mayak (Russian: Маяк, "beacon") is a nuclear fuel reprocessing plant between the towns of Kasli and Kyshtym (Кыштым also transliterated Kishtym or Kishtim) 72 km northwest of Chelyabinsk in Russia. The plant is in the Ozersk central administrative territorial unit, formerly known as Chelyabinsk-40, later as Chelyabinsk-65, and part of the Chelyabinsk Oblast.
Working conditions at Mayak resulted in severe health hazards and many accidents, with a serious accident occurring in 1957. In the past 45 years, about half a million people in the region have been irradiated in one or more of the incidents, exposing some of them to more than 20 times the radiation suffered by the Chernobyl disaster victims.[1]
Mayak was the goal of Gary Powers' surveillance flight in May 1960.[2]
Contents [hide]
1 Nuclear history
2 Kyshtym Disaster
3 Other accidents
4 See also
5 References
6 External links
[edit]Nuclear history

The Mayak plant was built in 1945-48, in a great hurry and in total secrecy, as part of the Soviet Union's nuclear weapon program. The plant's original mission was to make, refine, and machine plutonium for weapons. Five nuclear reactors were built for this purpose. Later the plant came to specialize in reprocessing plutonium from decommissioned weapons, and waste from nuclear reactors. Today the plant makes tritium and radioisotopes, but no plutonium. In recent years, proposals that the plant reprocess, for money, waste from foreign nuclear reactors have given rise to controversy.
In the early years of its operation, the Mayak plant released quantities of radioactively contaminated water into several small lakes near the plant, and into the Techa river, whose waters ultimately flow into the Ob River. The downstream consequences of this radiation pollution have yet to be determined. Some residents of Ozersk claim that living there poses no present-day risk, because of the decrease in the ambient radiation level over the past 50 years. They also report no problems with their health and the health of Mayak plant workers. These claims lack hard verification, and no one denies that many who worked at the plant in 1950s and '60s subsequently died of the effects of radiation. While the situation has since improved, the administration of the Mayak plant has been repeatedly criticized in recent years for environmentally unsound practices.
[edit]Kyshtym Disaster

Main article: Kyshtym Disaster
Working conditions at Mayak resulted in severe health hazards and many accidents.[3] The most notable accident occurred on 29 September 1957, when the failure of the cooling system for a tank storing tens of thousands of tons of dissolved nuclear waste resulted in a non-nuclear explosion having a force estimated at about 75 tons of TNT (310 gigajoules), which released some 2 Million Curies of radioactivity over 15,000 sq. miles.[4] Subsequently, at least 200 people died of radiation sickness, 10,000 people were evacuated from their homes, and 470,000 people were exposed to radiation. People "grew hysterical with fear with the incidence of unknown 'mysterious' diseases breaking out. Victims were seen with skin 'sloughing off' their faces, hands and other exposed parts of their bodies."[5] "Hundreds of square miles were left barren and unusable for decades and maybe centuries. Hundreds of people died, thousands were injured and surrounding areas were evacuated."[6] This nuclear accident, the Soviet Union's worst before the Chernobyl disaster, is categorised as a level 6 "serious accident" on the 0-7 International Nuclear Events Scale.

[edit]Other accidents

On 10 December 1968, the facility was experimenting with plutonium purification techniques. Two operators were using an "unfavorable geometry vessel in an improvised and unapproved operation as a temporary vessel for storing plutonium organic solution." In other words, the operators were decanting plutonium solutions into the wrong type of vessel. After most of the solution had been poured out, there was a flash of light, and heat. After the complex had been evacuated, the shift supervisor and radiation control supervisor re-entered the building. The shift supervisor then deceived the radiation control supervisor and entered the room of the incident and possibly attempted to pour the solution down a floor drain, causing a large nuclear reaction and irradiating himself with a deadly dose of radiation. The shift supervisor's actions are the subject of a Darwin Award nomination.[9]
The Mayak plant is associated with two other major nuclear accidents. The first occurred as a result of heavy rains causing Lake Karachay polluted with radioactive waste to release radioactive material into surrounding waters, and the second occurred in 1967 when wind spread dust from the bottom of Lake Karachay, a dried-up radioactively polluted lake (used as a dumping basin for Mayak's radioactive waste since 1951), over parts of Ozersk; over 400,000 people were irradiated.[10][11]

What will happen when another accident happens?

And it will. Aviation is a super-safe system monitored and regulated by the government, yet ever airplane design ever built that has any appreciable time in service and numbers has crashed out of control killing innocent members of the public. But when a nuclear plant explodes or melts down, millions of people around the globe can be at risk for cancer. It is not acceptable to rely on a system of power generation that requires 100 percent perfect safety all the time. Humans are fallible and they make mistakes. Before you accept a nuclear plant in your state you might want to see what could be in store for you at some point in time living with a hundred miles of a nuke plant:

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Illegal dumping
Main article: Radioactive waste dumping by the 'Ndrangheta
Authorities in Italy are investigating a 'Ndrangheta mafia clan accused of trafficking and illegally dumping nuclear waste. According to a turncoat, a manager of the Italy’s state energy research agency Enea paid the clan to get rid of 600 drums of toxic and radioactive waste from Italy, Switzerland, France, Germany, and the US, with Somalia as the destination, where the waste was buried after buying off local politicians. Former employees of Enea are suspected of paying the criminals to take waste off their hands in the 1980s and 1990s. Shipments to Somalia continued into the 1990s, while the 'Ndrangheta clan also blew up shiploads of waste, including radioactive hospital waste, and sending them to the sea bed off the Calabrian coast.[54] According to the environmental group Legambiente, former members of the 'Ndrangheta have said that they were paid to sink ships with radioactive material for the last 20 years.[55]
[edit]Accidents involving radioactive waste

Main article: Nuclear and radiation accidents
A number of incidents have occurred when radioactive material was disposed of improperly, shielding during transport was defective, or when it was simply abandoned or even stolen from a waste store.[56] In the Soviet Union, waste stored in Lake Karachay was blown over the area during a dust storm after the lake had partly dried out.[57] At Maxey Flat, a low-level radioactive waste facility located in Kentucky, containment trenches covered with dirt, instead of steel or cement, collapsed under heavy rainfall into the trenches and filled with water. The water that invaded the trenches became radioactive and had to be disposed of at the Maxey Flat facility itself. In other cases of radioactive waste accidents, lakes or ponds with radioactive waste accidentally overflowed into the rivers during exceptional storms.[citation needed] In Italy, several radioactive waste deposits let material flow into river water, thus contaminating water fit for domestic use.[58] In France, in the summer of 2008 numerous incidents happened;[59] in one, at the Areva plant in Tricastin, it was reported that during a draining operation liquid containing untreated uranium overflowed out of a faulty tank and about 75 kg of the radioactive material seeped into the ground and, from there, into two rivers nearby;[60]; in another case, over 100 staff were contaminated with low doses of radiation.[61]
Scavenging of abandoned radioactive material has been the cause of several other cases of radiation exposure, mostly in developing nations, which may have less regulation of dangerous substances (and sometimes less general education about radioactivity and its hazards) and a market for scavenged goods and scrap metal. The scavengers and those who buy the material are almost always unaware that the material is radioactive and it is selected for its aesthetics or scrap value.[62] Irresponsibility on the part of the radioactive material's owners, usually a hospital, university or military, and the absence of regulation concerning radioactive waste, or a lack of enforcement of such regulations, have been significant factors in radiation exposures. For an example of an accident involving radioactive scrap originating from a hospital see the Goiânia accident.[62]

http://en.wikipedia.org/wiki/Nuclear_waste

Radioactive waste dumping by the 'Ndrangheta
From Wikipedia, the free encyclopedia

The 'Ndrangheta, a criminal organisation from Calabria (Italy) has been involved in radioactive waste dumping since the 1980s. Ships with toxic and radioactive waste were sunk off the Italian coast. In addition, vessels were allegedly sent to Somalia and other developing countries with toxic waste, including radioactive waste cargoes, which were either sunk with the ship or buried on land. The introduction of more rigorous environmental legislation in the 1980s made illegal waste dumping a lucrative business for organised crime groups in Italy.[1]
A 1995 parliamentary waste commission report spoke of the "possible existence of national and international trafficking in radioactive waste, managed by business and criminal lobbies, which are believed to operate also with the approval of institutional subjects belonging to countries and governments of the European Union and outside the EU." Its conclusions noted "interferences and threats" against investigators, and were critical of Enea, Italy's state energy research agency, and their management of nuclear waste.[2]
[edit]Waste dumping off Italian coast

The 'Ndrangheta, an Italian mafia syndicate, has been accused by turncoat Francesco Fonti, a former member of 'Ndrangheta, of sinking at least 30 ships loaded with toxic waste, much of it radioactive. In 2005, Fonti revealed the conspiracy in the news magazine L'espresso. His statements led to widespread investigations into the radioactive waste disposal rackets, involving Giorgio Comerio and his disposal company, the Odm (Oceanic Disposal Management).[3]
Legambiente, an Italian NGO for the protection of the environment provided the public prosecutor’s office with all the data collected by Legambiente since 1994 concerning the disappearance of at least 40 ships in Mediterranean waters.[4] Over two decades Italian prosecutors have looked into more than 30 suspicious deep-water sinkings. They suspect that Italian and foreign industrialists have acted in league with the 'Ndrangheta, and possibly government agencies, to use the Mediterranean as a dumping ground. Vessels that sank in fair weather had suspicious cargo, sent no mayday or the crew vanished.[2]
According to Fonti a manager of Enea paid the clan to get rid of 600 drums of toxic and radioactive waste from Italy, Switzerland, France, Germany, and the US, with Somalia as the destination, where the waste was buried after buying off local politicians. Former employees of Enea are suspected of paying the criminals to take waste off their hands in the 1980s and 1990s. Shipments to Somalia continued into the 1990s, while the 'Ndrangheta clan also blew up shiploads of waste, including radioactive hospital waste, and sending them to the sea bed off the Calabrian coast.[5]
Fonti personally sank three ships and identified a wreck located 28 kilometres off the coast of Cetraro, in Calabria, by environmental workers as MV Cunsky and says he sunk it himself in 1992, complete with 120 barrels of toxic and radioactive waste. He said 'Ndrangheta received £100,000 for the job.[1][6][7] Fonti had been put on the job by his boss Sebastiano Romeo of the 'Ndrangheta clan from San Luca in collaboration with Giuseppe Giorgi. Another 'Ndrangheta boss involved was Natale Iamonte who sank ships near Melito di Porto Salvo.[8]
[edit]Alleged delivery of toxic waste to Somalia

Both Fonti and environmental group Legambiente claimed vessels were sent to Somalia and other developing countries such as Kenya and Zaire with toxic cargoes, which were either sunk with the ship or buried on land. Legambiente alleges that local rebel groups were given weapons in exchange for receiving the waste ships. Fonti claims that Italian TV journalist Ilaria Alpi and her cameraman Miran Hrovatin were murdered in 1994 in Somalia because they had seen toxic waste arrive in Bosaso, Somalia.[7]
The huge waves which battered northern Somalia after the 2004 Indian Ocean tsunami are believed to have stirred up illegally dumped nuclear and toxic waste. There is also lead, and heavy metals such as cadmium and mercury. The waves broke up rusting barrels and other containers and hazardous waste dumped along the long, remote shoreline in the war-racked country during the early 1990s, according to the United Nations Environment Programme (UNEP) said.[9][10]
According to Fonti Christian Democrat politicians, including former prime minister Ciriaco De Mita, had been involved in illegal disposal operations, using the secret service SISMI to cover up their connection. De Mita denied the allegations.[8] Fonti also claimed that Socialist politicians Gianni De Michelis and Bettino Craxi intervened to ensure that Italian peacekeeping troops in Somalia turned a blind eye to the transports.[11]
[edit]References

^ a b Mafia accused of sinking ship full of radioactive waste off Italy, by Nick Squires, The Telegraph, September 16, 2009
^ a b Italian police close in on 'toxic' shipwreck, The Financial Times, October 21 2009
^ (Italian) Parla un boss: Così lo Stato pagava la 'ndrangheta per smaltire i rifiuti tossici, by Riccardo Bocca, L’Espresso, August 5, 2005
^ (Italian) Dal plutonio alle polveri di marmo il "cimitero" delle navi radioattive, La Repubblica, September 14, 2009
^ From cocaine to plutonium: mafia clan accused of trafficking nuclear waste, The Guardian, October 9, 2007
^ Mafia sank boat with radioactive waste: official, AFP, September 14, 2009
^ a b Shipwreck may hold radioactive waste sunk by mafia off Italian coast, by John Hooper, The Guardian, September 16, 2009
^ a b (Italian) Complotto sotto il mare, by Riccardo Bocca, L’Espresso, September 17, 2009
^ Waves 'brought waste to Somalia', BBC News, March 2, 2005
^ After the Tsunami. Rapid Environmental Assessment, United Nations Environment Programme
^ Establishment hit by fresh accusations in toxic waste scandal, by Phillip Willan, The Herald, September 20, 2009

http://en.wikipedia.org/wiki/
Radioactive_waste_dumping_by_the_%27Ndrangheta

Because of corrupt Human nature, nuclear power is unsafe under any circumstances.

TJ






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