IAEA Transfers Highly Enriched Uranium from Venezuela to U.S. Under Tight Security

“This has been an example of the strong will, effective coordination, dedication and professionalism of all the parties involved,” said IAEA Director General Rafael Grossi.

The International Atomic Energy Agency (IAEA) has successfully coordinated a complex international operation to remove highly enriched uranium (HEU) from Venezuela and transport it securely to the United States, marking a significant achievement in global nuclear non-proliferation and international atomic security cooperation.

The high-risk mission involved the safe transfer of 13 kilograms of weapons-usable uranium from a decommissioned Venezuelan research reactor to the U.S. Department of Energy's Savannah River Site in South Carolina under strict military and international safeguards.

The operation was jointly carried out by Venezuela, the United States, the United Kingdom, and the IAEA, with nuclear material transported across South and North America through a carefully orchestrated land-and-sea convoy protected by tight security protocols.

Officials described the mission as a major example of international coordination aimed at reducing the global risks associated with highly enriched uranium — material that can potentially be used in nuclear weapons if acquired by malicious actors.

"This has been an example of the strong will, effective coordination, dedication and professionalism of all the parties involved," said IAEA Director General Rafael Grossi.

Removal of Weapons-Usable Uranium Reduces Global Security Risks

The uranium involved in the operation was enriched to just above 20 percent uranium-235, the fissile isotope used in nuclear fuel and nuclear weapons.

Although the material was originally intended for scientific research purposes, HEU at such enrichment levels is considered sensitive because it poses significant proliferation and nuclear security concerns if stolen, diverted, or mishandled.

Experts say reducing and eliminating civilian stocks of HEU has become one of the international community's central non-proliferation priorities since the end of the Cold War.

"Working alongside our DOE/NNSA, UK, IAEA and Venezuelan counterparts, we've demonstrated how effective partnerships can eliminate nuclear proliferation risks and enhance global nuclear security," said Christopher T. Yeaw, Assistant Secretary for the Bureau of Arms Control and Nonproliferation at the U.S. Department of State.

The fuel originated from Venezuela's RV-1 research reactor at the Venezuelan Institute for Scientific Research (IVIC), located roughly 15 kilometers southwest of Caracas.

The reactor operated for approximately three decades before shutting down in 1991. Following the latest removal mission, no nuclear fuel remains at the facility.

Nighttime Military Convoy Transported Nuclear Material to Venezuelan Port

According to the IAEA, the operation required months of planning, specialized equipment, security coordination, technical verification, and international diplomatic cooperation.

In late April, a heavily protected nighttime convoy escorted by the Venezuelan military transported the nuclear material from the IVIC facility to the coastal port city of Puerto Cabello.

At the port, the uranium was loaded onto a British vessel specially prepared for high-security nuclear transport before beginning its voyage to the United States.

The shipment later arrived safely at the Savannah River Site in South Carolina in early May.

The U.S. Government provided a specialized transportation container designed specifically for the secure movement of sensitive nuclear materials.

Throughout the operation, the IAEA maintained safeguards and verification oversight under its global nuclear monitoring mandate to ensure the material remained secure and accounted for during every stage of the transfer.

Part of Global Effort to Eliminate Civilian HEU Stockpiles

The Venezuela operation forms part of a decades-long international campaign led by the IAEA and partner countries to reduce the worldwide use of highly enriched uranium in civilian research reactors.

Many research reactors constructed during the 1960s and 1970s relied on HEU-based fuel because earlier reactor technologies required higher uranium enrichment levels for scientific experiments and isotope production.

However, advances in reactor engineering now allow most civilian research activities to be carried out using low enriched uranium (LEU), in which uranium-235 concentrations remain below 20 percent.

Because LEU presents far lower proliferation risks, governments and nuclear agencies worldwide have accelerated programs to convert research reactors away from HEU fuel.

According to the IAEA, 111 research reactors and medical isotope production facilities have already been converted from HEU to LEU use or permanently shut down.

Additionally, more than 6,930 kilograms of HEU have been removed, repatriated, or safely disposed of from dozens of countries worldwide under international non-proliferation initiatives.

Nuclear power reactors used for electricity generation already operate using LEU fuel rather than HEU.

Savannah River Site Plays Central Role in U.S. Nuclear Security Missions

The removed Venezuelan uranium was transported to the Savannah River Site (SRS), one of the United States' most strategically important nuclear facilities and a central hub for handling sensitive nuclear materials. (Federal Register)

Located in South Carolina, the Savannah River Site has long been involved in nuclear material storage, fuel reprocessing, downblending of highly enriched uranium, and international non-proliferation operations.

The site has received dozens of international nuclear material shipments since the 1990s under U.S. Department of Energy and National Nuclear Security Administration (NNSA) programs. (Transcending Boundaries)

Recent U.S. initiatives have also focused on converting surplus HEU into high-assay low-enriched uranium (HALEU) for civilian advanced nuclear reactor technologies. (NEI Magazine)

IAEA Expands Role in Global Nuclear Security and Verification

The mission highlights the expanding role of the IAEA as both a technical authority and diplomatic coordinator in sensitive nuclear security operations.

Beyond inspections and safeguards monitoring, the agency increasingly assists member states with nuclear material removal missions, reactor conversions, emergency preparedness, and the secure management of radioactive materials.

Analysts say such operations are becoming increasingly important amid growing international concerns over nuclear terrorism, illicit trafficking of radioactive substances, geopolitical instability, and proliferation risks linked to unsecured nuclear stockpiles.

The successful Venezuela mission also demonstrates that international nuclear cooperation remains possible even amid broader geopolitical tensions.

By eliminating another stockpile of weapons-usable uranium from civilian circulation, officials say the operation has reduced potential proliferation threats while strengthening international nuclear security frameworks designed to prevent dangerous materials from falling into the wrong hands.