Security

A man killed in a car bomb last week in Enerhodar, Ukraine, may have been targeted because of his ties to Zaporizhzhia nuclear power plant.

The International Atomic Energy Agency received information from both the Russian Federation and Ukraine about the suspected assassination, which occurred in the town where most of the plant staff live, said IAEA director general Rafael Mariano Grossi.

A new report from the U.S. Government Accountability Office finds that the Nuclear Regulatory Commission has not taken the steps needed to address the potential economic and societal radiological risks that could arise from a “dirty bomb.”

Walt Kirchner

The Nuclear Regulatory Commission’s Advisory Committee on Reactor Safeguards (ACRS) is seeking qualified candidates for two open positions. The ACRS is the world’s oldest organization devoted to reactor safety and is statutorily mandated by the Atomic Energy Act of 1954, as amended. Today, the ACRS reports directly to the NRC’s commission and provides an independent expert technical review of and advice on matters related to the safety of existing and proposed nuclear facilities and on the adequacy of proposed reactor safety standards. The ACRS also advises the commission on health physics, radiation protection, and nuclear waste disposal facility issues.

The ACRS is a part-time advisory group consisting of a maximum of 15 members who are well-recognized experts in technical areas that are key to nuclear safety and whose membership represents a diverse breadth of experience in all aspects of the nuclear enterprise: industry, universities, national laboratories, and government.

The U.S. Department of Energy’s National Nuclear Security Administration and Romania’s National Commission for Nuclear Activities Control (CNCAN) recently celebrated 15 years of collaboration in advancing radiological security.

The U.S. Attorney’s Office in Massachusetts announced criminal charges this week against two men for allegedly smuggling and conspiring to violate export controls relating to the sale of laser equipment to the Russian nuclear industry.

The military conflict with Russia that began in February 2022 has left Ukraine with “dangerous instability” of its national grid, according to the International Atomic Energy Agency’s director general Rafael Mariano Grossi.

Following a meeting in Kyiv with Ukrainian president Volodymyr Zelenskyy on September 3, Grossi promised to take a more proactive stance in protecting the country’s energy infrastructure—especially where nuclear safety is vulnerable. During recent months there have been numerous missile and drone attacks, with some directly causing the disconnection of several nuclear power plants.

The water level in Ukraine’s Zaporizhzhia nuclear power plant cooling pond continues to decrease, creating a serious safety threat.

“If this trend continues, ZNPP staff confirmed that it will soon become challenging to pump water from the pond. Maintaining the level of the pond is made more difficult by the hot summer weather,” said Rafael Mariano Grossi, director general of the International Atomic Energy Agency, in an update issued August 2.

A major milestone has been reached in the construction of a plutonium pit production facility at the Savannah River Site, located near Aiken, S.C.

After 18 months of work involving local trade unions, the dismantlement and removal (D&R) of commodities and equipment throughout the Savannah River Plutonium Processing Facility (SRPPF), previously installed by the Mixed Oxide (MOX) project, was completed in June 2024, the Department of Energy reported on July 24.

Security watchdogs with the International Atomic Energy Association are reporting continuing issues at Ukraine’s Zaporizhzhia nuclear plant due to the military invasion from Russia.

IAEA director general Rafael Mariano Grossi said in his weekly briefing on Ukraine that Zaporizhzhia nuclear power plant staff experienced another power outage in the nearby city of Enerhodar—where most of the workers live—and a shortage of tap water that has also affected the plant.

The Nuclear Regulatory Commission has posted an unclassified version of its annual report to Congress on the results of the agency’s security inspection activities in 2023.

The report covers the NRC’s security inspection program, including force-on-force exercises, for commercial nuclear power reactors and Category I fuel cycle facilities. It keeps Congress and the public informed of the NRC’s oversight of the protection of the nation’s civilian nuclear power infrastructure and strategic special nuclear material.

An external radiation monitoring station was taken out by shelling and fire near the Zaporizhzhia nuclear plant in Ukraine the last week of June.

This brings the total to four of the plant’s 14 radiation monitoring sites that are out of commission, further reducing the effectiveness of its off-site capability to detect and measure any radioactive release during an emergency, said IAEA director general Rafael Mariano Grossi.

Earlier this month, nearly 250 personnel at the Department of Energy’s Savannah River Site in South Carolina took part in an annual exercise to test preparedness for a radiological release and contamination emergency.

International Atomic Energy Agency director general Rafael Mariano Grossi was in Switzerland last week to talk with insurance executives at the Nuclear Pools’ Forum about the potential of nuclear power.

The board of governors for the International Atomic Energy Agency censured Iran this week for its failure to cooperate with access requests and materials needed to confirm that the Middle Eastern nation is adhering to nuclear safeguard obligations.

During the 2024 International Conference on Nuclear Security (ICONS) in May, representatives from the U.S. Department of Energy and the National Nuclear Security Administration discussed U.S. nuclear security priorities, noted their achievements and those of U.S. partners, and explained how to tackle the security challenges of today and tomorrow.

Greg Bowman and George Smith work for the Nuclear Regulatory Commission in implementing programs that deal with risk, whether to nuclear power plants or from nuclear materials, such as radiological sabotage and theft or diversion of materials. Bowman is the director of the NRC’s Division of Physical and Cybersecurity Policy in the Office of Nuclear Security and Incident Response. Smith is the senior project manager for security in the Source Management & Protection Branch of the Division of Materials Safety, Security, State, and Tribal Programs in the Office of Nuclear Material Safety and Safeguards.

The three initiatives Bowman and Smith discussed with Nuclear News editor-in-chief Rick Michal are the Insider Threat Program, the Cybersecurity Program, and the Domestic Safeguards Program.

James Conca

The term “dirty bomb” surfaces occasionally, usually in the context of nuclear waste, which, while understandable, is incorrect.

Dirty bombs, or radiation dispersal devices (RDDs), use conventional methods like car bombs to disperse radioactive materials in populated economic districts, such as lower Manhattan. The point is to cause great economic and social disruption disproportionate to the actual radiological effects—and well beyond the physical destruction from the conventional bomb components.

Society’s irrational fear of radiation makes the dirty bomb an ultimate weapon of terror. But it is a psychological weapon, not a nuclear one. The public should not be any more afraid of a dirty bomb than they are of an ordinary car bomb.

Ukraine’s Zaporizhzhia nuclear power plant temporarily lost the connection to its sole remaining 750 kilovolt (kV) off-site power line last week due to a reported short circuit, leaving it reliant on a single backup line for more than three hours.

Ensuring that nuclear technology is used exclusively for peaceful purposes remains a critical challenge for our society today. The global community faces several grave nuclear security threats: nations that attempt to create (such as Iran) or augment (such as Russia, China, and North Korea) their nuclear arsenals, acts of aggression that target civilian nuclear reactors (as seen with Russia in Ukraine), and the looming menace of nuclear weapons deployment (emanating from Russia). Furthermore, addressing climate change necessitates an expansion of nuclear energy for electricity generation, which brings with it the need for safeguarding and regulating the deployment of advanced reactors.

During the International Atomic Energy Agency’s International Conference on Nuclear Security this week, leaders from the U.S. Department of Energy’s National Nuclear Security Administration and the European Commission made a joint statement on enhancing radioactive source security.