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ÚJV Řež completes irradiation testing of cable samples for CERN, verifying material radiation resistance

On August 3, the Radiation Chemistry and Environmental Qualification Department of ÚJV Řež stated that it had completed irradiation testing of cable samples for the European Organization for Nuclear Research (CERN) research team within a relatively short period, and submitted the test results required for subsequent research. The purpose of this testing was to confirm whether the relevant material samples could maintain reliable performance under high-radiation environments. ÚJV Řež has long been engaged in environmental qualification and cable lifetime management, with capabilities in radiation aging, thermal aging simulation, and testing of material mechanical and electrical properties. Through these tests, researchers can assess the tolerance limits of materials in harsh environments, providing a basis for equipment selection, operation and maintenance, and subsequent experiments...

2026-08-05

Low Danube Water Levels Impact Nuclear Power Plant Operations in Romania and Hungary

On August 4, amid persistently low Danube River water levels, Romania was rushing to build temporary dikes to divert more river water toward the Cernavodă Nuclear Power Plant to secure cooling water for its remaining operational reactor. Meanwhile, Hungary stated that the only still-operating turbine unit at the Paks Nuclear Power Plant was running in a safe condition. Both Hungary's Paks Nuclear Power Plant and Romania's Cernavodă Nuclear Power Plant rely on Danube River water for cooling. Recently, the Danube's water level dropped to historic lows, leading to a significant decline in nuclear power output in both countries. Budapest and Bucharest have had to increase electricity imports and call on residents and businesses to reduce consumption to ease grid pressure...

2026-08-05

Romania purchases nuclear electricity from Ukraine via Moldova to fill gap left by Cernavoda Unit 1 outage

Romanian state-owned nuclear power company Nuclearelectrica announced on August 3 that it purchased electricity from Ukraine, using Moldova's state-owned power supplier Energocom as an intermediary. Although the specific transaction amount is confidential, the price will be determined at market rates. This purchase is intended to compensate for the power gap caused by the shutdown of Unit 1 at the Cernavoda Nuclear Power Plant, thereby mitigating the impact on Romania's energy market. According to the statement, the purchase price will reference official prices on regional spot exchanges, particularly during peak demand hours from 7 PM to 10 PM. Given the widespread heatwave and tight electricity demand currently affecting Romania and Europe, the market...

2026-08-04

Unit 2 of Romania's Cernavoda Nuclear Power Plant can only operate for about 5 more days due to the continuously declining water level of the Danube River

Unit 2 of Romania's Cernavoda Nuclear Power Plant is expected to operate for only about five days due to the declining water level of the Danube River. Romeo Urjan, the plant's director, stated that if the Danube's water level continues to drop at a rate of 2 to 3 centimeters per day, Unit 2 will soon cease operation. Unit 1 has already been shut down due to insufficient water flow. Urjan emphasized that despite this, Unit 2 continues to operate within normal parameters, and nuclear safety is not under any threat. To alleviate the situation, relevant authorities are preparing to deploy four barges to divert more water to the plant, hoping to raise the water level by 7 to 8 centimeters, thereby extending the plant's operating time. Related...

2026-08-04

DUNE Prototype Detector Undergoes 300 kV Pressure Test at CERN

The Deep Underground Neutrino Experiment (DUNE), an international collaborative project led by the Fermi National Accelerator Laboratory under the U.S. Department of Energy, is conducting pressure tests on the prototype detector ProtoDUNE at CERN's Neutrino Platform to verify the long-term stability of the relevant detection technology under extreme operating conditions. DUNE is designed as a large-scale neutrino research experiment aimed at studying the properties of neutrinos and their role in the evolution of the universe. The experiment will install large liquid argon time projection chamber detectors approximately one mile underground at the Sanford Underground Research Facility in South Dakota, USA. Once the detectors are filled with liquid argon and sealed, internal components will be difficult to access for extended periods...

2026-08-03

Antihydrogen hyperfine splitting measurement sets new precision record

The ALPHA collaboration at CERN has recently completed a new measurement of the ground-state hyperfine splitting of antihydrogen. The results show that the hyperfine splitting of antihydrogen and ordinary hydrogen agrees within an uncertainty of four parts per million, improving the measurement precision by two orders of magnitude over previous experiments. Antihydrogen tamers: ALPHA team members from the University of Calgary in Canada. Back row, left to right: Pouya Heidari, Reece Stefanyshyn, Abbygale Swadling, Filobateer Ghaly, Sean Wilson, and Alberto Jesus Uribe Jimenez. Front row: Jay Suh (left) and Timothy Friesen. (Photo courtesy of Jay Suh) Antihydrogen consists of...

2026-08-03

Danube Water Levels Continue to Drop, Putting Pressure on Romania's Cernavodă Nuclear Power Plant Operations

Romanian official Sorin Lindasu said on August 1 that if the Danube River water level continues to decline, the Cernavodă Nuclear Power Plant in Constanța County, southeastern Romania, may only be able to continue operating for 4 to 5 days. To ensure the water level required for continuous plant operation, relevant parties have begun implementing hydraulic engineering works on the Danube. Lindasu stated that the Danube water level is currently dropping at a rate of about 2 to 3 centimeters per day. A flow rate of 1,590 cubic meters per second has been recorded at the Baziaș inlet where the Danube enters Romanian territory, and this figure is expected to continue declining, potentially falling to about 1,450 cubic meters per second by August 7. Under these conditions, Cernavodă...

2026-08-03

Romanian Army Deploys on the Danube to Protect Nuclear Power Plant Operations

The Romanian Ministry of National Defense announced that the Romanian Army has been mobilized to protect the operation of the Cernavodă Nuclear Power Plant and conduct hydrographic measurements on the Danube River. The Ministry stated that this measure was taken in response to the current critical situation on the Danube to ensure the safe operation of the nuclear power plant. The military action aims to obtain the technical data required for the construction of a mobile weir that will redirect a portion of the Danube's flow into the Old Danube. Naval forces are conducting measurements at kilometers 345 to 346 of the Danube, in the area where the Bala branch converges, to determine the parameters needed for implementing the weir. Military experts are analyzing the riverbed and water depth, and transmitting the collected data to the relevant administrative authorities. The Ministry emphasized that these measures...

2026-08-02

Romania Declares National State of Emergency for August Amid Decline in Power Generation

Romania's Acting Prime Minister and Energy Minister Ilie Bolojan announced on July 31 after a cabinet meeting that Romania would enter a national state of emergency in August due to a decline in power generation caused by drought. Bolojan stated that the drought has reduced water levels in rivers, with a notable decrease in the flow of the Danube River. The flow has dropped from over 4,000 cubic meters per second to 1,600 cubic meters per second. He said that as a result, the water level in the intake basin of the Cernavodă NPP has fallen, and Unit 1 of the plant had to be shut down recently. He also noted that Unit 2 of the Cernavodă NPP faces a high risk of shutdown. Should Unit 2 go offline, Romania's total...

2026-08-01

Unit 2 of Romania's Cernavoda Nuclear Power Plant not to shut down temporarily due to low Danube water level

Romania's National Nuclear Power Company (Nuclearelectrica) stated on July 30 that Unit 2 of the Cernavoda Nuclear Power Plant will continue to operate connected to the grid. Previously, the company had warned that the unit, located in Constanța County in southeastern Romania, might need to shut down due to the low water level of the Danube River. The company said that based on an operational analysis completed the previous night, experts believe the currently obtained relevant parameters allow Unit 2 to continue operating under safe conditions. Therefore, the unit will remain connected to Romania's national power system. Nuclearelectrica also stated that technical personnel will continuously monitor and analyze the plant's operating parameters. Given the subsequent hydrological forecasts for the Danube water level...

2026-07-31

Danube River water levels continue to drop, Romania's only nuclear power plant to shut down completely

Affected by prolonged drought and high temperatures, the water level of the Danube River has been continuously declining, impacting the operation of multiple nuclear power plants along its banks. Romanian authorities have confirmed that both units of the country's only nuclear power plant, the Cernavodă Nuclear Power Plant, will be completely shut down to prevent damage to the cooling system. Romania's Acting Prime Minister Ilie Bolojan has called on residents and large industrial users to voluntarily reduce electricity consumption, especially by controlling the load between 8:00 PM and 11:00 PM. He stated that Romania often faces electricity shortage pressure during this period. Bolojan noted that the Danube River flow rate during the same period in previous years was typically 3,900 to 4,500 cubic meters per second, but it has now dropped to 1,600 cubic meters per second, and is expected to continue decreasing in the coming days.

2026-07-30