DavideWilliams

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DavideWilliams
DavideWilliams
29 dec 21

DeRank™: 3,00

France, another incident at the Tricastin nuclear power plant (250 km from Turin). Authorities: "No contamination outside the site"

www.ilfattoquotidiano.it

Ye t another blow to French nuclear power plants. An incident at the Tricastin facility, one of the oldest in the country, occurred at the end of November but details have been emerging in recent days. It led to contamination from tritium, a radioactive isotope of hydrogen, in the groundwater of the electricity production unit. The nuclear safety authority (Asn) has assured that the leak has been contained and that no contamination was detected in the groundwater outside the site, but the public operator Électricité de France (Edf), while reporting the incident, referred to it as a "significant event." After conducting an inspection, Asn confirmed: “Approximately 900 liters of effluents containing tritium penetrated the ground between November 25 and December 8, 2021.” This episode also occurred during the closure of four nuclear reactors due to a defect found in a pipe. For safety reasons, all plants of the same type were shut down, two in Civaux and two in Chooz, near the Belgian border. This decision caused Électricité de France's stock to plummet.

Meanwhile, Paris lost a terawatt-hour of electricity within a year, in the midst of an energy crisis, and November was a month of doubts. First, with the news published by Le Monde of a lawsuit filed by a former manager of the Tricastin plant, who reported a “policy of concealment” of incidents and safety deviations, and then with revelations provided to the French NGO Criirad by a whistleblower working in the atomic industry, who spoke about a design defect affecting all EPR reactors (European Pressurized Water Reactor) concerning the incident in June at the Taishan 1 nuclear plant in China.

The incident – The latest blow, the incident at the Tricastin plant in Drôme, where four pressurized water reactors (PWR) of 915 MW each are operational. Liquid radioactive effluents are transferred to various storage tanks, which are filled one at a time. On November 25, something went wrong. One of the tanks did not have enough free volume to contain the transferred effluents, which overflowed and ended up in a recovery pit. While operators began redirecting the liquids to another tank, the pit continued to fill beyond capacity, causing some effluents to flow into rainwater collection gutters not designed to be watertight. On December 8, 2021, after heavy rains, the gutters were emptied, returning the effluents to the recovery pit, but while some of the radioactive liquids were recovered
  
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