Nyonoksa radiation accident

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Nyonoksa radiation accident
Date8 August 2019; 2 months ago (2019-08-08)
LocationState Central Navy Testing Range near Nyonoksa, Arkhangelsk Oblast, Russian Federation
TypeNuclear and radiation accident
CauseExplosive destruction of an "isotope power source" (officially). Allegedly a failed 9M730 Burevestnik nuclear-powered cruise missile test/recovery.

The Nyonoksa radiation accident, Arkhangelsk explosion or Nyonoksa explosion (Russian: Инцидент в Нёноксе, Intsident v Nyonokse) occurred on 8 August 2019 near Nyonoksa, a village under the administrative jurisdiction of Severodvinsk, Arkhangelsk Oblast, Russian Federation. Five military and civilian specialists were killed and three (or six, depending on the source) were injured.[1][2][3]


Between November 2017 and 26 February 2018, Russia conducted four tests of the 9M730 Burevestnik nuclear-powered cruise missile, launched from other test sites.[4][5] According to the United States intelligence community, only the flight test in November 2017 from Pankovo test site was moderately successful with all of the others ending in failure.[6][7] According to Russia, none of the tests ended in failure.[5] During recovery efforts later in 2018, Russia used three ships, one capable of handling radioactive material from the weapons nuclear core, to bring the missile tested in November 2017 from the seabed of Barents Sea back to the surface.[5][8][9] Based on satelite images, the Nyonoksa test site copies those at Kapustin Yar and Pankovo, where 9M730 Burevestnik was tested.[9][10][11]


The accident occurred at the State Central Navy Testing Range (Russian: «Государственный центральный морской полигон») which is the main rocket launching site of the Russian Navy and is also called Nyonoksa.[12] According to the version presented by Russian officials, it was a result of a failed test of an "isotope power source for a liquid-fuelled rocket engine".[13][14][15] Nonproliferation expert Jeffrey Lewis and Federation of American Scientists fellow Ankit Panda suspect the incident resulted from a Burevestnik cruise missile test.[16] However, the researcher Michael Kofman, Fellow at the Wilson Center disputed the assertions, and believes the explosion was probably not related to Burevestnik.[17] According to CNBC, the Russians were trying to recover a missile from the seabed which was lost during a previously failed test.[18] No NOTAMs were filed prior to the explosion to warn pilots of a possible missile test.[9] Previously the residents of Nyonoksa were warned and evacuated prior to the missile tests.[9] Also, two Russian special purpose ships were at the Nyonoksa test range when the explosion occurred: the Serebryanka (Rosatom Flot vessel used for handling nuclear waste from nuclear reactors) and the Zvyozdochka (used for underwater salvage operations and is equipped with two heavy lift sea cranes and two underwater unmanned robots).[9][10] Event of explosive nature was registered on 8 August at 06:00 UTC (local time 09:00) at the infrasound station in Bardufoss (Troms, Norway). The event was also registered on seismic data, which means it must have been coupled to the ground. The practical meaning of an explosion coupling to the ground is that it took place either at the ground or in contact with it; for example on water. The timing and location of the event coincides with the reported accident in Archangelsk.[19] Several fishermen stated on sanatatur.ru that they witnessed the accident: one saw a 100-meter column of water rise into the air after the explosion and another saw a large hole in the side of a ship which had been at the site of the explosion.[9]


In the aftermath of the explosion, three of the victims were treated at the Semashko Medical Center in Arkhangelsk, which had radiation treatment expertise and employed the use of hazmat suits, while three others were taken to the Arkhangelsk Regional Clinical Hospital, arriving at 4:35 p.m. on August 8, where the hospital staff were not warned of the radiation exposure.[20] Several Arkhangelsk Regional Hospital staff were later flown to Moscow for radiation testing. One doctor was found to test positive for Cesium-137, though the levels remain unknown, as the medical staff involved were forced to sign non-disclosure agreements.[21][22][23]

According to an unnamed medical worker, two of the injured by the explosion died of radiation sickness en route from Arkhangelsk Regional Hospital to treatment in Moscow.[23][24] Their bodies were sent to Moscow's Burnazyan Federal Medical and Biophysical Center (FMBC) (Russian: ГНЦ Федеральный медицинский биофизический центр имени А. И. Бурназяна ФМБА России).[23][a]

Five immediate deaths[edit]

On Monday August 12, 2019, flags in Sarov were lowered to half-staff during the viewing of five coffins in Sarov's main square.[26] These were the bodies of five Rosatom workers[b] who were killed during and immediately following the August 8, 2019 explosion.[3][12] Later, on August 12, 2019, the bodies of the Rosatom workers were buried in Sarov's main cemetery.[26]

Radiation levels[edit]

Yuri Peshkov from the Roshidromet, the Russian meteorology service, stated that background radiation levels peaked at 4-16 times normal levels at six of its eight stations in Severodvinsk, 47 kilometres (29 mi) to the east, reaching 1.78 microsieverts per hour shortly after the explosion, but returned to normal levels 2.5 hours after the explosion.[29][30][31] The administration in Severodvinsk reported elevated radiation levels for 40 minutes leading to a rush on medical iodine.[29][32][33] In the days following the event several monitoring stations in Russia stopped sending data to the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), a data network for radiation monitoring made of 80 stations around the world.[34][35]

According to the information posted by Roshydromet on radiation situation in Severodvinsk in the hours following the accident, a number of short-lived isotopes were discovered: Strontium-91, Barium-139, Barium-140 and Lanthanum-140.[36][37] Norwegian nuclear safety expert Nils Bøhmer stated that such isotope composition proves a nuclear reactor was involved in the accident.[36]

External media
Two radioactive pontoons
Radiation measurements in Nyonoksa on YouTube

On 2 September, Belomorkanal news agency published a video showcasing two abandoned pontoons near the mouth of where the Nyonoksa River[c] empties into the Dvina Bay only 4 km from the center of Nyonoksa, with one of them carrying an array of heavily damaged testing equipment.[38][39] According to Nyonoksa residents, the first pontoon "PP PP Plant No. 2" (Russian: «ПП ПП зав №2») with two 6-metre (20 ft) blue containers washed ashore on 9 August and the heavily damaged second pontoon with a damaged crane, a 6-metre (20 ft) blue container and a yellow container similar to a Siempelkamp container for highly radioactive materials was towed by tugboats to a site near the first pontoon about five days after the explosion.[11][38][39] The video by Severodvinsk journalist Nikolai Karneyevich (Russian: Николай Карнеевич) demonstrates gamma radiation levels at 150 metres (490 ft) from the abandoned vessels on the White Sea shore close to Nyonoksa with the reading reaching 186 μR/hour - 15 times higher than natural.[10][40] Nyonoksa residents said that just days prior to the 31 August measurements, the gamma ray radiation levels were 750 μR/hour at the same location.[41] Alpha and beta radiation levels have not been measured. The site has been neither enclosed nor guarded and no radiation warning signs have been observed.[39][41][42]

Evacuation of population[edit]

According to the local press, it was announced that about 450 inhabitants of the Nyonoksa village had to be evacuated by train for two hours on 14 August then this evacuation would have been canceled. According to the The Moscow Times quoting RIA Novosti, residents of Nyonoksa will be evacuated each month by special train for two hours (early Wednesday morning) for planned military activities in the city; evacuation that according to a villager already exists: it is expected, everyone is taken from the village about once a month, even if some remained behind. But now, after the last events, I think everyone will leave. The governor of the Arkhangelsk region (Igor Orlov) denied that the evacuation was an emergency, saying it was a routine measure, already "planned".[27][43]


  •  Russia: Although initially denied, involvement of radioactive materials in the accident was later confirmed by Russian officials.[15] On 13 August, the authorities initiated evacuation of the village of Nyonoksa.[44] On 14 August the evacuation was cancelled.[45] On 26 August, Aleksei Karpov, Russia’s envoy to international organizations in Vienna, stated that the accident was linked to the development of weapons which Russia had to begin creating as "one of the tit-for-tat measures in the wake of the United States’ withdrawal from the Anti-Ballistic Missile Treaty".[46]
  •  Norway: Over 500 miles (800 km) away, tiny amounts of radioactive iodine, which were collected from 9-12 August, were detected at an air filter station in Svanhovd by Norway's nuclear safety authority.[47][48][49] The agency could not determine if the detection was linked to the accident, and, according to Reuters, such iodine measurements were not unusual as monitoring stations in Norway detected radioactive iodine about six to eight times a year and also were usually unable to determine the source of the isotope.[47]
  •  USA: On 12 August a tweet from US president Donald Trump suggested that the accident was a failed Burevestnik test. In the tweet Burevestnik was referred to by its NATO reporting name "Skyfall".[50] On 10 October, Thomas DiNanno, member of the United States delegation to the United Nations General Assembly First Committee, stated that the "August 8th 'Skyfall' incident [...] was the result of a nuclear reaction that occurred during the recovery of a Russian nuclear-powered cruise missile", which "remained on the bed of the White Sea since its failed test early last year".[51] On 14 October, three United Stated diplomats were removed from the Nyonoksa-Severodvinsk train, being accused of attempting to enter the closed city of Severodvinsk without the official permission. According to Russian officials, the diplomats were initially supposed to visit Arhangelsk, which isn't in the restricted zone, but then made two attempts to enter the restricted zone next to the Nyonoksa testing site, the second one involving renting a car.[52] The US embassy in Russia and the State Department confirmed the incident, stating the diplomats were on official travel and had informed Russian authorities of their travel in advance.[52][53]

See also[edit]


  1. ^ On December 27, 2007, the Clinical Hospital No. 6 (Russian: Клинической больнице № 6) merged with the Institute of Biophysics of the FMBA of Russia (Russian: Института биофизики ФМБА России) to become the SSC A. I. Burnazyan Federal Medical Biophysical Center (FMBC) which was named after Avetik Ignatevich Burnazyan (Russian: Аветик Игнатьевич Бурназян) and became the only Federal Medical Biophysical Center (FMBC) (Russian: ГНЦ Федеральный медицинский биофизический центр имени А. И. Бурназяна ФМБА России) that specializes in contaminated persons exposed to high levels of ionizing radiation from radiological incidents such as at Mayak and Chernobyl.[25]
  2. ^ According to the head of Rosatom, Alexei Likhachev (Russian: Алексей Лихачев), the five Rosatom workers killed were Alexei Vyushin (Russian: Алексей Вьюшин), Evgeny Koratayev (Russian: Евгений Коротаев), Vyacheslav Lipshev (Russian: Вячеслав Липшев), Sergei Pichugin (Russian: Сергей Пичугин), and Vladislav Yanovsky (Russian: Владислав Яновский).[27][28]
  3. ^ Verkhovka River (Russian: Река верховка) empties into Lake Nizhny (Russian: озеро Нижнее) which drains to the Nyonoksa River. The Nyonoksa River joins Lake Nizhny with the Dvina Bay of the White Sea.


  1. ^ Andrew E. Kramer (10 August 2019). "Russia Confirms Radioactive Materials Were Involved in Deadly Blast". The New York Times. Retrieved 12 August 2019.
  2. ^ Mike Eckel (10 August 2019). "What Exactly Happened at Russian Missile Test Site?". VOA. Retrieved 12 August 2019.
  3. ^ a b "Russia explosion: Five confirmed dead in rocket blast". BBC News. 9 August 2019. Retrieved 12 August 2019.
  4. ^ Panda, Ankit (6 February 2019). "Russia Conducts Test of Nuclear-Powered Cruise Missile: The test is the thirteenth to date to involve the experimental Burevestnik". Diplomat. Retrieved 11 October 2019.
  5. ^ a b c Macias, Amanda (21 August 2018). "Russia is preparing to search for a nuclear-powered missile that was lost at sea months ago after a failed test". CNBC. Retrieved 11 October 2019.
  6. ^ "Putin's much-hyped nuclear-powered cruise missile still isn't working right as Russia restarts testing". Business Insider. 7 February 2019. Retrieved 11 October 2019.
  7. ^ Panda, Ankit (23 August 2018). "Russia Readies Recovery Effort for Nuclear-Powered Cruise Missile, Lost at Sea in 2017: Russia is preparing to retrieve the wreckage of a nuclear-powered cruise missile from the Barents Sea". Diplomat. Retrieved 11 October 2019.
  8. ^ Pickrell, Ryan (22 August 2018). "Putin lost his supposedly 'invulnerable' nuclear-powered missile at sea — now he has to go find it". Business Insider. Retrieved 11 October 2019.
  9. ^ a b c d e f Kurtov, Mark; Dobrynin, Sergey; Eckel, Mike (30 August 2019). "Did A Botched Bid To Recover A Sunken Missile Cause The Russian Radiation Blast?". Radio Free Europe. Retrieved 15 October 2019.
  10. ^ a b c Soukup, Ondřej (6 September 2019). "Nová teorie jaderné havárie: Radiaci uvolnila podvodní exploze, naznačují satelity" [New nuclear accident theory: Underwater explosions released radiation, satellites suggest]. Aktuálně.cz (in Czech). Retrieved 15 October 2019.
  11. ^ a b Добрынин, Сергей (Dobrynin, Sergey); Крутов, Марк (Krutov, Mark) (3 September 2019). ""Была настоящая паника". Нёнокса: продолжение расследования" ["There was real panic." Nyonoksa: continued investigation]. Svoboda (in Russian). Retrieved 15 October 2019.
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  14. ^ Johnson, Reuben (15 August 2019). "How Russia Is Tempting Fate—And the Next Chernobyl". The Bulwark. Retrieved 2019-08-16.
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  17. ^ Michael Kofman (15 August 2019). "Mystery explosion at Nenoksa test site: it's probably not Burevestnik".
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  19. ^ NORSAR (23 August 2019). "New data sheds further light on description of incidents reported in North-Russia".
  20. ^ Ackeret, Markus. "Was inzwischen zum Nuklearunfall am Weissen Meer bekannt ist – und warum es ein schlechtes Licht auf die Behörden wirft". Neue Zürcher Zeitung. Retrieved 24 August 2019.
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  22. ^ ""I ate Fukushima crabs": they explained to the doctor who treated the injured at Nenoxa the infection with a radioactive isotope". Novaya Gazeta. Retrieved 22 August 2019.
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  31. ^ "Превышение было: Росгидромет опубликовал данные по излучению в Северодвинске в день взрыва в Нёноксе: Доза гамма-излучения была превышена в 4–16 раз" [The excess was: Roshydromet published data on radiation in Severodvinsk on the day of the explosion in Nyonoksa: The dose of gamma radiation was exceeded 4-16 times]. 29.RU (in Russian). 12 August 2019. Retrieved 17 October 2019.
  32. ^ "Russians buy up iodine in Arctic rocket radiation scare". BBC News. 9 August 2019. Retrieved 12 August 2019.
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  34. ^ Kuznets, Dmitry. "Russian officials have openly acknowledged the country's August 8 nuclear blast. Why did they turn off four nuclear monitoring stations anyway?". Meduza. Retrieved 22 August 2019.
  35. ^ Zerbo, Lassina. "Lassina Zerbo". Twitter. Retrieved 22 August 2019.
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  37. ^ Пешков, Ю.В., Об аварийном, экстремально высоком и высоком загрязнении окружающей среды и выявленных случаях изменения радиационной обстановки на территории Российской Федерации в период с 10 по 23 августа 2019 года [About accidental, extremely high and high environmental pollution and detected cases of changes in the radiation situation in the Russian Federation in the period from August 10 to 23, 2019], «РосГидроМет» (Roshydromet), retrieved 26 August 2019
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  39. ^ a b c "Эхо взрыва 8 августа. В Нёноксе до сих пор неспокойно" [The echo of the explosion on August 8th. In Nyonoksa is still restless]. Belomorkanal (Russian: «Беломорканал») TV29.RU (The White Sea Channel) (in Russian). Severodvinsk. 2 September 2019. Retrieved 4 September 2019.
  40. ^ "Замер радиации в Нёноксе" [Measurement of radiation in Nyonoksa]. Belomorkanal (Russian: «Беломорканал») TV29.RU (The White Sea Channel) (in Russian). Severodvinsk. 2 September 2019. Retrieved 15 October 2019.
  41. ^ a b Брицкая, Татьяна (Britskaya, Tatyana) (2 September 2019). "СМИ: у Неноксы после взрыва брошены радиоактивные понтоны, излучение в 10 раз выше нормы" [Media: At Nyonoksa after the explosion threw radioactive pontoons, radiation 10 times higher than normal] (in Russian). Новая газета. Retrieved 3 September 2019.
  42. ^ "Radiation levels still surging at pontoons damaged in Russia's mysterious missile-test explosion". Meduza. 3 September 2019. Retrieved 4 September 2019.
  43. ^ "I think everyone will leave" on August 14, local residents will be taken out of the Nenoksa village -- this is due to scheduled site work". 29.ru. Retrieved 22 August 2019.
  44. ^ Thomas Grove (13 August 2019). "Russia Urges Villagers to Leave Radioactive Blast Site". Wall Street Journal. Retrieved 18 August 2019.
  45. ^ Nathan Hodge, Olga Pavlova (14 August 2019). "Russian officials cancel evacuation of village near suspected missile accident". CNN.
  46. ^ Kramer, Andrew E. (26 August 2019). "Russia Identifies 4 Radioactive Isotopes From Nuclear Accident". The New York Times. Retrieved 26 August 2019.
  47. ^ a b "Norway detects radioactive iodine by Russian border days after blast". Reuters. 15 August 2019. Retrieved 18 August 2019.
  48. ^ Longman, James. "Concerns grow as radiation is detected in Norway after missile explosion in Russia". ABC News. Moscow. Retrieved 17 October 2019.
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