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    Mikhail Gorbachev

    Natanz Nuclear Facility
    The entrance to the Natanz nuclear facility on the old Kashan-Natanz road
    Map
    CountryIran
    LocationNatanz County, Isfahan province
    Coordinates33°43′30″N 51°43′30″E / 33.72500°N 51.72500°E / 33.72500; 51.72500
    StatusPartially destroyed
    OwnerGovernment of Iran
    OperatorAtomic Energy Organization of Iran
    External links
    CommonsRelated media on Commons
    [edit on Wikidata]
    Part of a series on the
    Nuclear program of Iran
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    The Natanz Nuclear Facility (Persian: تأسیسات هسته‌ای نطنز), officially the Shahid Ahmadi Roshan Nuclear Facilities (Persian: تأسیسات هسته‌ای شهید احمدی روشن), is one of the nuclear facilities in Iran, which was built near Natanz for uranium enrichment. This center is part of Iran's nuclear program,[1] a program whose estimated cost is 2-3 trillion USD due to economic sanctions.[2] The underground enrichment facility of this center is protected by a concrete shield with a thickness of approximately 7.6 meters.[3]

    According to the Iranian authorities, the gas centrifuges in this center are built under the ground,[4] at a depth of 40 to 50 meters of the earth. This construction design is chosen for "safety of the people"[5] and also for being safe from "possible air attack".[6][7]

    The existence of this nuclear center was first exposed in 2002 by the People's Mojahedin Organization of Iran.[8] In June 2025, during the Iran–Israel War, the facility was bombed extensively by the IDF.[9] The above ground facility was said to have been partially destroyed during the strikes, according to International Atomic Energy Agency chief Rafael Grossi.[10][11]

    Naming

    In February 2012, with the presence of Mahmoud Ahmadinejad, the then-president of Iran, the names of 5 nuclear centers and departments of Iran were changed to the names of five assassinated people. Natanz Nuclear Facility name was changed to "Shahid Ahmadi Roshan Nuclear Facility", in memory of Mostafa Ahmadi Roshan who was assassinated on 11 January 2012.[12]

    Before that, the name of this nuclear facility was the same as the nearby city, Natanz. It is still known internationally with the name "Natanz Nuclear Facility".[13]

    Facilities

    The Fuel Enrichment Plant (FEP) covers 100,000 square meters that is built 8 meters underground and protected by a concrete wall 2.5 meters thick, itself protected by another concrete wall. In 2004, the roof was hardened with reinforced concrete and covered with 22 meters of earth. The complex has been described as being about three floors below ground,[14] and consists of three underground buildings, two of which were built to house 50,000 centrifuges, about 14,000 of which are installed and about 11,000 are in operation,[14] and six buildings above-ground, including two 25,000 square meter halls used for the assembly of gas centrifuges,[15] as well as a number of administrative buildings.

    The Pilot Fuel Enrichment Plant (PFEP) is located within the complex which houses the FEP in a number of buildings above ground, and serves as a facility for research, development, testing and pilot enrichment.[16][17] The facility began operation in 2003.[16][17] It consists of one hall which is divided into a section for research and development and another for production, and can house 6 cascades of 164 centrifuges each.[16][17] The PFEP is used by Iran to test new centrifuge designs. IAEA reports have documented the presence of IR-1, IR-2m, IR-3, IR-4, IR-5, IR-6, and IR6s centrifuges in the facility,[16][18][19] and as of November 2022 Iran was involved in testing IR-8, IR-8b and IR-9 centrifuges at the site.[17][20]

    History

    Acknowledgement, operations and expansion

    In 2002, the NCRI exposed the existence of an undisclosed uranium enrichment facility in Natanz, leading to concerns about Iran's nuclear program.[21][22][23] This once secret site was one of the two exposed by Alireza Jafarzadeh in August, 2002.

    In 2003, after the Iranian government formally acknowledged the facilities, the Atomic Energy Agency inspected them, finding that they had a more advanced nuclear program than had previously been anticipated by U.S. intelligence.[24] The initial discovery of the enrichment facility in Natanz, as well as Iran's refusal to fully cooperate with the IAEA, heightened tensions between Iran and Western powers.[25]

    In February 2003, IAEA Director General Mohamed ElBaradei visited the site and reported that 160 centrifuges were complete and ready for operation, with 1,000 more under construction at the site.[26] During 2003, IAEA inspectors found particles of highly enriched uranium (HEU) at the Natanz facility.[27] Iran claimed the material was contaminated by the supplier country, though Iran did not name it.[27] In accordance with Code 3.1 of the Subsidiary Arrangements to Iran's safeguards agreement that were in force up to that time, Iran was not obligated to declare the Natanz enrichment facility until six months before nuclear material was introduced into the facility.[28]

    Enrichment of Uranium at the plant was halted in July 2004 during negotiations with European countries. In 2006, Iran announced that it would resume Uranium enrichment. In September 2007, the Iranian government announced it had installed 3 centrifuges at Natanz. In 2010, the International Atomic Energy Agency (IAEA) was told by the Iranian government that future enrichment programmes would take place at Natanz, and they would start in March 2011.[29]

    After the election of Mahmoud Ahmadinejad as president of Iran in August 2005, the regime reversed its cooperative stance with the IAEA, on 10 January 2006 Iran removed the IAEAs safeguarding seals from the facility and resumed uranium enrichment, introducing uranium hexafluoride gas (UF6) into centrifuges both in the FEP and in the PFEP.[30][31] According to the IAEA, in 2009 there were approximately 7,000 centrifuges installed at Natanz, of which 5,000 were producing low enriched uranium.[32] In August 2010, the IAEA said Iran had started using a second set of 164 centrifuges linked in a cascade to enrich uranium to up to 20% at its Natanz Pilot Fuel Enrichment Plant.[33]

    In 2010 an Iranian announcement confirmed by the IAEA stated that the PFEP had begun to enrich uranium hexafluoride (UF6) to 20%.[34][35] Starting in July of that year, Iran has been feeding UF6 into two interconnected IR-1 cascades of 164 centrifuges each, in the production hall. As of may 2013, Iran had produced 177.8 kg of UF6 enriched up to 20% in the PFEP.[36] This development heightened concerns over a potential nuclear breakout, as a large stockpile of Uranium enriched to 20% would cut the time it takes to produce weapons-grade uranium by more than half. In April 2021 Iran began enriching UF6 to 60% at the PFEP, using IR-4 and IR-6 centrifuges.[37][38]

    In January 2013, Fereydoun Abbasi from the Atomic Energy Organization of Iran said: "five percent uranium enrichment is continuing at Natanz, and we will continue 20 percent enrichment at Fordo and Natanz to meet our needs".[39]

    Daily inspection by the IAEA of the Natanz site was agreed as part of the nuclear enrichment reduction agreement made with the P5+1 countries in November 2013.[40]

    In July 2020, the Atomic Energy Organization of Iran released photos of a building, presumed to be a centrifuge assembly facility, after a recent explosion. An unnamed Middle Eastern intelligence official later claimed that damage to the facility was caused by an explosive device.[41]

    On 28 October 2020, the International Atomic Energy Agency (IAEA) released satellite images revealing that Iran had begun the construction of an underground plant near its nuclear facility at Natanz.[42] In March 2021, Iran restarted enriching uranium at the Natanz facility with a third set of advanced nuclear centrifuges, in a series of violations of the defunct 2015 nuclear accord.[43]

    In October 2020, the Center for Nonproliferation Studies released satellite images acknowledging that Iran had begun the construction of an underground plant near its nuclear facility at Natanz.[44] In November 2020, the IAEA reported that Iran had started feeding uranium hexafluoride (UF6) into a newly installed underground cascade of 174 advanced IR-2m centrifuges at Natanz, which the JCPOA did not permit.[45] In December 2020, the IAEA reported that Tehran "holds more than 12 times the amount of enriched uranium" permitted under the JCPOA, and that "work has also begun on the construction of new underground facilities close to Natanz, its main enrichment facility".[46]

    In March 2021, Iran restarted enriching uranium at the Natanz facility with a third set of advanced IR-4 nuclear centrifuges in a series of violations of the 2015 nuclear accord.[47][48] On 10 April, Iran began injecting uranium hexafluoride gas into advanced IR-6 and IR- 5 centrifuges at Natanz, but on the next day, an accident occurred in the electricity distribution network.[49] On 11 April, IRNA reported that the incident was due to a power failure and that there were no injuries nor any escape of radioactive material.[50] Further details eventually emerged that it was actually Israel that orchestrated the attack.[51]

    On 14 April 2022, the IAEA said in a report seen by Reuters that Iran is starting to operate a new workshop at Natanz that would build parts for uranium-enriching centrifuges using machinery relocated from its now-closed Karaj plant.[52]

    On 29 April 2022, according to IAEA Director General Rafael Grossi, Iran's new workshop at Natanz for fabricating centrifuge parts was set up underground, presumably to protect it from possible attacks.[53]

    According to Iran Watch, as of October 2024, the Natanz Fuel Enrichment Plant (FEP) was operating 36 cascades (clusters) of IR-1 centrifuges and 30 more advanced centrifuges of the IR-2m, IR-4 and IR-6 models, while the Pilot Fuel Enrichment Plant (PFEP) at Natanz was operating nearly 1000 advanced centrifuges of the IR-4 and IR-6 models,[54] which are enriching uranium to 60%.[55] There are several thousand IR-1 centrifuges in storage in Natanz, as well as a number of powerful centrifuges under development which contribute to the growth of Iran's stockpile of enriched uranium.[54] The accumulation and eventual deployment of large numbers of centrifuges would allow Iran to accelerate the production of nuclear fuel,[54] and potentially allow further enrichment of weapons-grade uranium.[56]

    In November 2024, according to the Washington Post, satellite images show that construction is underway at the Natanz Nuclear Facility. Also, the International Atomic Energy Agency has announced that Iran is building an advanced centrifuge assembly plant in the underground of Natanz Nuclear Facility.[57][58]

    Sabotages and cyber attacks

    See also: Stuxnet, 2020 Iran explosions § Natanz centrifuge assembly facility explosion, and Assassination of Iranian nuclear scientists

    Natanz's nuclear power plant was hit by a sophisticated cyber attack alleged to have been carried out in an operation called Olympic Games by a coalition of German, French, British, American, Dutch and Israeli intelligence organizations.[59] The attack used a Stuxnet worm which hampered the operation of plant's centrifuges and caused damage to them over time.[60] The alleged goal of the cyber attack was not to destroy the nuclear program of Iran completely but to stall it enough for sanctions and diplomacy to take effect.[59] This alleged goal was achieved, as the Joint Comprehensive Plan of Action nuclear treaty with Iran was reached in July 2015.[59]

    Around 2 a.m. local time on 2 July 2020, a fire and explosion hit a centrifuge production plant at a nuclear enrichment facility in Natanz.[61][62] A group known as the "Cheetahs of the Homeland" claimed responsibility for the attack.[63] Some Iranian officials suggested that the incident may have been caused by cyber sabotage.[64]

    On 10 April 2021, Iran began injecting uranium hexafluoride gas into advanced IR-6 and IR- 5 centrifuges at Natanz, but on the next day, an accident occurred in the electricity distribution network.[65] On 11 April, IRNA reported that the incident was due to a power failure and that there were no injuries nor any escape of radioactive material.[66] Reports alleged that Mossad had orchestrated the attack.[67] On 17 April, Iranian state television named 43-year-old Reza Karimi from Kashan as a suspect for the blackout, stating that he had fled the country before the sabotage happened.[68][69] In July 2021, Iran reportedly limited inspectors' access to the plant.[70]

    2025 Israeli airstrikes

    Main articles: Iran–Israel war and List of airstrikes during the Iran–Israel war § Nuclear facilities
    Israeli airstrike locations at the Natanz Nuclear Facility

    The Natanz Nuclear Facility was damaged on the first day of the Iran-Israel war.[71][72][73] The Pilot Fuel Enrichment Plant, a multi-story enrichment hall containing 1,700 advanced gas centrifuges, was destroyed with at least three explosive impacts visible in satellite imagery.[71][74] 60% enriched uranium was being produced by the Pilot Fuel Enrichment Plant at the time of the strikes.[75] An electrical substation feeding power to the Natanz Nuclear Facility was damaged causing a site-wide power outage. The delicate gas centrifuges in the underground Fuel Enrichment Plant were likely severely damaged or destroyed by this unexpected loss of power.[76] Direct impacts on the earth above the underground enrichment halls were visible in satellite imagery, but their significance remains unknown.[71][77] Air defenses around the facility were significantly damaged.[78]

    See also

    References

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    Credit: Wikipedia https://en.wikipedia.org/wiki/Natanz_nuclear_enrichment_facility

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