NRA decided not to apply INES evaluation to Fukushima plant anymore

On 12/10/2014, NRA (Nuclear Regulation Authority) announced they are not going to apply INES (International Nuclear Estimation System) to any further accidents in Fukushima plant.

Severe contamination leakage continues to occur in Fukushima plant.

The leakage that occurred in August 2013 was evaluated as INES Level 3, another leakage that occurred this February is also assumed to be evaluated as INES Level 3.

(cf, [Level.7 Plus] Nuclear Regulation Authority classified H4 tank area leakage as INES Level.3 [URL 1])

(cf, [100m3 overflow] Accident scale INES level 3 potentially / The amount of damage up to a few million USD [URL 2])


Literally, Fukushima accident is now evaluated as Level 7 + 3 + 3.


As the reason why NRA abandons INES, they point out that they cannot prepare deep safeguard in the crippled plant anymore, however no significant increase in radioactive density was observed offshore Fukushima.


NRA is only going to qualitatively explain the outline of the potential accident and effect to the environment instead of indicating INES level.





Français :

La NRA décidé de ne plus appliquer l’évaluation INES à la centrale de Fukushima


Le 10 décembre 2014, la NRA (Nuclear Regulation Authority Autorité de Régulation Nucléaire) a annoncé qu’ils n’allaient plus appliquer INES (International Nuclear Estimation System) aux futurs accidents qui pourront se produire dans la centrale de Fukushima.

Des fuites extrêmement radioactives continuent de se produire dans la centrale de Fukushima.
La fuite qui a eu lieu en août 2013 était évaluée comme un INES niveau 3, une autre fuite ayant eu lieu en février dernier était également supposée être évaluée comme un INES niveau 3.
(cf. [Niveau 7 Plus] La Nuclear Regulation Authority a classé la zone de la fuite de la citerne H4 au niveau INES 3)
(cf. [débordement des 100 m³] L’échelle INES pourrait être de 3 : Des dégâts estimés à plusieurs millions d’ USD)

Littéralement, l’accident de Fukushima est actuellement évalué comme de niveaux 7 + 3 + 3.

La raison avancée pour laquelle la NRA abandonne INES est qu’ils ne peuvent plus appliquer de grandes mesures de précaution dans la centrale dévastée, néanmoins aucune augmentation significative de la radioactivité n’a été observée au large de Fukushima.

Au lieu d’en donner un niveau INES, la NRA ne va plus expliquer que qualitativement les grandes lignes des accidents à venir et leurs effets sur l’environnement.

About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.


December 2014