System 361 (FILTRA) provides a filtered pressure relief for the reactor containment in the event of its failure (pressure increase). System 361 is activated via a rupture disc V1 which should rupture at a differential pressure of 5.08 - 5.4 bar across the disc. During the refuelling outage it is possible to replace the rupture disc. After replacement during the outage in 2001, the rupture disc was tested and failed at 3.36 bar instead of as expected at a pressure of at least 5.08 - 5.4 bar. The reason was found to be that the wrong rupture disc had been installed during the outage in 2000. This means that pressure relief of the reactor containment (barrier) would have occurred at a pressure lower than calculated in the event of failure. The safety consequences are judged in this case to be insignificant since the specified suction pressure margins (NPSH) for residual heating and emergency cooling pumps would have been maintained. There would not either have been any unacceptable pressure transients in the reactor containment. The possible impact on the environment is judged to be small.
Jan vd Putte quickly changed from dressing as the pied piper at the protest during the IAEA nuclear power conference to warn for the Russian nuclear power conglomerate Rosatom and its role in Ukraine.
Anke Herold, Executive Director Oeko-Institut, Freiburg (Germany), in Brussels about the claim to triple nuclear by 2050: IPCC scenarios vs forecast development of nuclear.
Yesterday, the ANVS, the Dutch nuclear supervisor, authorized the transport of up to six shipments of fissile enriched uranium from Russia to Urenco in Almelo. This is remarkable because after the Russian invasion, almost two years ago, the uranium-enriching state-owned company in Almelo claimed to be "very concerned" about developments in Ukraine and therefore "stopped […]
[The Guardian]: "As nuclear plant is hit by further delay, real cost will be far higher after inflation is included, as project uses 2015 prices. The owner of Hinkley Point C has blamed inflation, Covid and Brexit as it announced the nuclear power plant project could be delayed by a further four years, and cost […]
From WNN: In 2022, 13 EU countries with nuclear electricity production generated 609,255 GWh of nuclear electricity - down 16.7% compared with 2021, according to figures released by Eurostat, the statistical office of the European Union. It noted this is the lowest level registered in the period from 1990, the first year for which comparable […]