Refuelling of Unit 4 was commenced on 18 June 1988. Operating personnel performed a planned switchover to natural circulation from loops 4 and 6 to loops 1 and 3 on 30 June. Meanwhile, the effectiveness of core cooling by natural circulation decreased sharply for about a 3 hour period. After switching over the natural circulation among the llps, the operating personnel isolated loops 4 and 6 and started to drain them. Nitrogen used to drain the water got into the loops in operation and most of the water was pushed from the SG primary side into the reactor vessel. The operator tried to stop disturbance of natural circulation by starting periodically the make-up pump to the working loops. During this injection the personnel performed venting several times to take away the gas-air mixture from the top of SG headers, Eventually, restoration of natural circulation was achieved by continuous venting of the SG headers. BASIS FOR RATING: BIR ref. 4.2b, 4.4 DIFFICULTIES IN RATING:
The Netherlands has agreed to allow Urenco to be used for the British military nuclear program. This clears the way for uranium enriched by Urenco to be used in nuclear weapons. With his decision, Foreign Minister Berendsen (CDA Christen Democrats) is departing from the principle that civilian and military nuclear applications must remain strictly separate. […]
Behnam Raeesian is an internationally recognized visual artist and poster designer from Iran, known for bold political and cultural works. Through exhibitions, workshops, jury roles, and collaborations with cultural institutions worldwide, he has built a strong voice in contemporary political graphic design. His projects confront complex issues such as nuclear risk and technological impact, transforming […]
Everywhere you look, the nuclear industry’s hype machine is in overdrive. Goldman Sachs, Microsoft, and the UK government all tout small modular reactors as the silver bullet for climate change and energy security. Tech billionaires are hiring nuclear veterans. Wall Street is whispering about “round-the-clock power” for artificial intelligence data centers. For those old enough […]
Kernenergie en veiligheid: A wargame sought to test if a major radiological release that would prompt the evacuation of millions of civilians in South Korea could distract key US allies from assisting and rebuffing an all-out military invasion of Taiwan. The short answer was yes. The game originally presumed that China, wanting to keep the […]
Big batteries and EVs to the rescue again as faults with new nuclear plant cause chaos on Nordic grids The Finnish nuclear power plant Olkiluoto was finally connected to the grid last year, at an estimated cost of €11 billion compared to the original budget of €3 billion. That cost blowout forced its developer, the […]
