Iran’s Centrifuges: The Long Road Towards a Nuclear Bomb

This photo released on Nov. 5, 2019, by the Atomic Energy Organization of Iran shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. (Atomic Energy Organization of Iran via AP, File)
This photo released on Nov. 5, 2019, by the Atomic Energy Organization of Iran shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. (Atomic Energy Organization of Iran via AP, File)
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Iran’s Centrifuges: The Long Road Towards a Nuclear Bomb

This photo released on Nov. 5, 2019, by the Atomic Energy Organization of Iran shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. (Atomic Energy Organization of Iran via AP, File)
This photo released on Nov. 5, 2019, by the Atomic Energy Organization of Iran shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. (Atomic Energy Organization of Iran via AP, File)

The UN nuclear agency has confirmed that Iran plans to install around 6,000 new centrifuges to enrich uranium, according to a report seen by AFP on Friday.

“Iran informed the Agency that it intended to feed” around 6,000 centrifuges at its sites in Fordo and Natanz to enrich uranium to up to five percent, higher than the 3.67 percent limit Tehran had agreed to in 2015.

The Iranian decision came in response to a resolution adopted on November 21 by the UN nuclear watchdog that censures Tehran for what the agency called lack of cooperation.

On Thursday, Iran had threatened to end its ban on acquiring nuclear weapons if Western sanctions are reimposed.

The country’s foreign minister, Abbas Araghchi, said in an interview that the nuclear debate inside Iran is likely to shift towards the possession of its own weapons if the west goes ahead with a threat to reimpose all UN sanctions,

What are centrifuges?

They are precise devices with cylinders that rotate much faster than the speed of sound, to collect enriched uranium atoms.

To explain how centrifugation works, rotating cylinders are much like medical laboratory equipment used to test blood.

The high rotation speeds exert a rotational force that separates the various components of blood as a function of their density and quantity in the sample.

In the case of uranium, the centrifuge operates using the familiar principle of centrifugal force. This force separates two gases of unequal masses in a spinning cylinder or tube. The heavier uranium-238 isotope collects at the outer edges of the cylinder while the lighter uranium-235 collects near the axis of rotation at the center.

Around 20 kg of uranium enriched to a 90% purity level would be needed for a single nuclear weapon. It would take about 1,500 SWU to produce a weapon-equivalent of 90 percent-enriched uranium from this enriched uranium.

At Fordo, Iran is currently using the two only operating cascades of IR-6 centrifuges there to enrich to 60% from 20%.

There are 1,044 centrifuges active at the Fordo uranium enrichment plant, Iran's President Masoud Pezeshkian said.

He had earlier asked the Iran Atomic Energy Agency to begin inserting uranium gas into newly activated advanced centrifuges.

Early this month, a spokesperson for the US State Department said Iran's expansion of uranium enrichment activities in defiance of key nuclear commitments is "a big step in the wrong direction”.

His statement came after Tehran announced it would start injecting uranium gas into centrifuges at Fordo.

Dispute

The Nuclear Non-Proliferation Treaty, signed in 2015 between Tehran and Western countries, says advanced centrifuges for uranium enrichment could operate until January 2027.

The difference between the first generation of centrifuges (IR-1) and the other generations is speed. The latest generation, IR-6, could enrich uranium up to 10 times faster than the first-generation IR-1, according to Iranian officials.

During the heyday of its nuclear program, Iran operated a total of 10,204 first-generation IR-1 centrifuges at the Natanz and Fordo facilities. But under the deal, Iran's commitments included operating no more than 5,060 IR-1 centrifuges for a period of 10 years.

Although the centrifuges that Iran installed before the 2015 nuclear deal were of the first generation, Tehran’s recent uranium enrichment activity at nuclear sites has reached disturbingly advanced levels, potentially increasing the nuclear proliferation risk.

Major centrifuge activities in Iran

May 2008: Iran installed several centrifuges including more modern models.

March 2012: Iranian media announced 3,000 centrifuges at Natanz.

August 2012: The International Atomic Energy Agency announced that Iran had installed large parts of the centrifuges at Fordo.

November 2012: An IAEA report confirmed that all advanced centrifuges had been installed at Fordo, although there were only four working centrifuges, and another four fully equipped, vacuum tested, and ready to go.

February 2013: IAEA says Iran has operated 12,699 IR-1 centrifuges at the Natanz site.

June 2018: Iran’s supreme leader revealed Tuesday that it ultimately wants 190,000 nuclear centrifuges — a figure 30 times higher than world powers allowed under the 2015 deal.

September 2019: Iran mounted 22 IR-4, one IR-5, 30 IR-6, and three IR-6 for testing, outside the treaty boundaries.

September 2019: Iran announced it started operating advanced and fast centrifuges to enrich uranium.

November 2024: Iranian Foreign Minister Abbas Araghchi announces that his country will operate several thousand advanced centrifuges.

November 2024: Iranian state television broadcasts AEOI Chief Mohammad Eslami announcing that “gasification of a few thousands of new generation centrifuges has been started.”



Syria's Military Hospital Where Detainees Were Tortured, Not Treated

Torture survivor Mohammed Najib dreaded being taken by his jailers to a military hospital where he was beaten - AFP
Torture survivor Mohammed Najib dreaded being taken by his jailers to a military hospital where he was beaten - AFP
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Syria's Military Hospital Where Detainees Were Tortured, Not Treated

Torture survivor Mohammed Najib dreaded being taken by his jailers to a military hospital where he was beaten - AFP
Torture survivor Mohammed Najib dreaded being taken by his jailers to a military hospital where he was beaten - AFP

Former Syrian detainee Mohammed Najib has suffered for years from torture-induced back pain. Yet he dreaded being taken by his jailers to a military hospital, where he received beatings instead of treatment.

The prison guards forbade him from revealing his condition, only sending him to hospital for his likely tuberculosis symptoms -- widespread in the notorious Saydnaya prison where he was detained.

Doctors at Tishreen Hospital, the largest military health facility in Damascus, never inquired about the hunch on his back -- the result of sustained abuse.
Freed just hours after the fall of Bashar al-Assad, Najib has a tennis ball-sized bulge on his lower back.
The 31-year-old can barely walk, and the pain is unbearable.

But he insisted on showing AFP around a jail in the military hospital compound.

"I hated being brought here," Najib said as he returned with two friends who had shared the same cell with him after they were accused of ties to the armed rebellion that sought Assad's overthrow.

"They hit us all the time, and because I couldn't walk easily, they hit me" even more, he said, referring the guards.

Because he was never allowed to say he had anything more than the tuberculosis symptoms of "diarrhoea and fever", he never received proper treatment.

"I went back and forth for nothing," he said.

Assad fled Syria last month after opposition factions wrested city after city from his control until Damascus fell, ending his family's five-decade rule.

The Assads left behind a harrowing legacy of abuse at detention facilities that were sites of extrajudicial executions, torture and forced disappearances.

Hours after Assad fled, Syrian opposition broke into the notorious Saydnaya prison, freeing thousands, some there since the 1980s.

Since then, Tishreen Hospital has been out of service pending an investigation.

- 'Assisting torture' -

Human rights advocates say Syria's military hospitals, most notably Tishreen, have a record of neglect and ill-treatment.

"Some medical practitioners that were in some of these military hospitals (were) assisting... interrogations and torture, and maybe even withholding treatments to detainees," Hanny Megally of the UN Commission of Inquiry on Syria told AFP.

Former Saydnaya detainees told AFP about the ordeals they went through after they got sick.

It would begin with a routine examination by two of the jail's military doctors.

One of them used to beat prisoners, sometimes to death, four ex-detainees said.

Guards relentlessly beat them from the moment they were pulled from their cells to the hospital jail, then to its main building to meet the doctors, and finally escorted back to prison.

At the hospital's jail, those who were too ill were left to die or even killed, several former detainees said.

Three years ago, Najib and other inmates were tortured using the "tyre" method inside Saydnaya for merely talking to each other.

They were forced into vehicle tyres and beaten with their foreheads against their knees or ankles.

After a first check-up by a military doctor at Saydnaya, Najib was prescribed painkillers for his back pain.

The doctor eventually accepted to transfer him to Tishreen Hospital for tuberculosis symptoms.

Former prisoners said guards looking to minimize their workload would order them to say they suffered from "diarrhoea and fever" so they could transfer everyone to the same department.

- 'Clean him' -

When Omar al-Masri, 39, was taken to the hospital with a torture-induced leg injury, he too told a doctor he had an upset stomach and a fever.

While he was awaiting treatment, a guard ordered him to "clean" a very sick inmate.

Masri wiped the prisoner's face and body, yet when the guard returned, he angrily repeated the same order: "Clean him".

As Masri repeated the task, the sick prisoner soon took his last breath. An agitated Masri called out to the guard who gave him a chilling response: "Well done."

"That is when I learnt that by 'clean him', he meant 'kill him'," he said.

According to a 2023 report by the Association of Detainees and the Missing in Sednaya Prison, security forces at the hospital jail and even medical and administrative staff inflicted physical and psychological violence on detainees.

A civilian doctor told AFP she and other medical staff at Tishreen were under strict orders to keep conversations with prisoners to a minimum.

"We weren't allowed to ask what the prisoner's name was or learn anything about them," she said, requesting anonymity for fear of reprisals.

She said that despite reports about ill treatment at the hospital, she had not witnessed it herself.

But even if a doctor was courageous enough to ask about a prisoner's name, the scared detainee would only give the number assigned to him by the guards.

"They weren't allowed to speak," she said.

After a beating in his Saydnaya cell, Osama Abdul Latif's ribs were broken, but the prison doctors only transferred him to the hospital four months later with a large protrusion on his side.

Abdul Latif and other detainees had to stack the bodies of three fellow inmates into the transfer vehicle and unloaded them at Tishreen hospital.

"I was jailed for five years," Abdul Latif said.

But "250 years wouldn't be enough to talk about all the suffering" he endured.