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The key facilities of Iran's nuclear program

The key facilities of Iran's nuclear program

Donald Trump, President of the United States, said that on Saturday, U.S. forces had carried out a "very succesful attack" against nuclear sites in Iran. This included a facility located deep within a mountain in Fordow, South of Tehran.

Israel has struck Iranian nuclear sites after launching its attacks on Iran in June. These include Natanz, the centre of Iran's uranium-enrichment programme, as well as Khondab, an incomplete heavy-water research reactor.

Here are some of Iran’s most important nuclear facilities.

Where are Iran's nuclear facilities?

The Iranian nuclear programme is spread out over many different locations. Although the threat of Israeli aerial strikes has been looming for decades, only a few of the sites are underground.

IRAN HAS A NUCLEAR WEAPONS SYSTEM?

The United States, as well as the U.N.'s nuclear watchdog, believe that Iran had a secret and coordinated nuclear weapons program which it stopped in 2003. The Islamic Republic has denied ever possessing or planning one.

Iran agreed to limit its nuclear activities as part of a 2015 agreement with world powers. In exchange, the deal lifted international sanctions. The pact collapsed after Trump, during his first term in office, pulled out the United States in 2018. Tehran began to abandon the restrictions the following year.

IS IRAN INCREASING ITS URANIUM ENRICHMENT?

Yes. Since the deal fell apart, Iran has expanded its uranium-enrichment programme. The "breakout time", or the amount of time needed to produce weapons-grade uranium to make a nuclear weapon is now days or a little more than one week instead of at least a full year as it was under the 2015 agreement.

It would take more time to actually make a bomb using that material. The exact time is not known and the debate continues.

Iran enriches uranium up to 60% fissile purity, which is close to 90% weapons grade, at two locations. In theory, it has enough material to make six bombs if enriched any further.

NATANZ

Complex at the centre of Iran's nuclear enrichment program, located on a plain bordering mountains south of Tehran in the Shi'ite holy city of Qom. Natanz is home to two enrichment facilities: the huge, underground Fuel Enrichment Plant as well as the above-ground Pilot Fuel Enrichment Plant.

In 2002, an exiled Iranian group revealed that Iran was building secretly Natanz. This sparked a diplomatic standoff with the West over Iran's nuclear intentions. The standoff continues to this day.

The FEP is a facility designed for commercial enrichment, with a capacity of 50,000 centrifuges. Around 16,000 centrifuges had been installed, and 13,000 were in use, refining the uranium up to 5% purity.

The FEP is described by diplomats who are familiar with Natanz as being three floors underground. It has been long debated how much damage Israeli aircraft could cause to the building.

Other means of damage have been used to destroy centrifuges in the FEP, including an explosion that occurred and a power outage in April 2021 which Iran claimed was an Israeli attack.

The PFEP above ground only houses hundreds of centrifuges, but Iran enriches up to 60% purity in this area.

FORDOW

Fordow, on the other side of Qom is a site for enrichment dug into the mountain. It's probably better protected against potential bombardment as the FEP. Trump tweeted on social media that "Fordow has been destroyed."

Iran was not allowed to enrich in Fordow under the 2015 agreement with major powers. The facility was equipped with around 2,000 centrifuges, most of which were advanced IR-6 machines. Of these, up to 350 of them could enrich up to 60%.

In 2009, the United States announced that Iran had secretly built Fordow for many years without informing the IAEA. Barack Obama, then-President of the United States, said that "the size and configuration is inconsistent with a peace programme."

ISFAHAN

Iran's second-largest city, Isfahan has a major nuclear technology center on its outskirts.

The facility includes the Fuel Plate Fabrication Plant as well as the Uranium Conversion Facility that converts uranium to uranium Hexafluoride, which is then fed into centrifuges.

Diplomats claim that Iran stores uranium enriched at Isfahan.

There is equipment at Isfahan to make uranium metal, a process that is particularly proliferation-sensitive since it can be used to devise the core of a nuclear bomb.

Isfahan will be a new location for 2022, according to the IAEA. It has machines that can make centrifuge components.

KHONDAB

Iran has a heavy-water reactor that is partially constructed. It was originally named Arak, and it's now called Khondab. Heavy-water research reactors are a risk to nuclear proliferation because they produce plutonium easily, which can be used, just like enriched Uranium, as the core for an atomic weapon.

The 2015 agreement saw construction halted and the core of the reactor removed, then filled with concrete, rendering it useless. The reactor would be redesigned to "minimize the production of Plutonium and to not produce weapon-grade Plutonium during normal operation". Iran told the IAEA it intended to begin operating the reactor by 2026.

TEHRAN RESERVE CENTRE

The Iranian nuclear research facilities at Tehran include a reactor for research.

BUSHEHR

The only nuclear power station in Iran, located on the Gulf Coast, uses Russian fuel, which Russia takes back after it has been used, reducing proliferation risks.

(source: Reuters)