9 avril 2011
La réplique sismique principale de jeudi 7 avril 2011 a neutralisé toutes les lignes à haute tension extérieures à la centrale nucléaire de Higashidori dans la préfecture d’Aomori. L’opérateur a pu employer des générateurs d’alimentation de secours et la source extérieure a été retrouvée. Mais plus tard il a constaté que les générateurs d’alimentation de secours ne fonctionnaient pas correctement.
Available in english only.
Japan’s Nuclear and Industrial Safety Agency says the safety measures for nuclear plants compiled before the problem at the Fukushima Daiichi facility are not sufficient.
Senior agency official Hidehiko Nishiyama spoke to reporters on Saturday.
He said he thought nuclear power plants across Japan were completely safe because they included multiple layers of protection systems.
But he said it is necessary to re-examine safety protocols beyond the regulations formulated in the past and to review the measures based on what happened to the nuclear power plants in the quake-hit areas.
The reactors at the Fukushima plant lost their emergency generators as well as their external power supply after the March 11th earthquake and tsunami.
Plant operator Tokyo Electric Power Company has not yet restored the reactors’ cooling systems.
Thursday’s major aftershock disabled all outside power lines at Higashidori nuclear power plant in Aomori Prefecture.
The operator was able to use emergency power generators and eventually restored outside power.
But later it found that the emergency power generators were not functioning properly.
Saturday, April 09, 2011 22:10 +0900 (JST)
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