Tritium level in seawater spiked over double within 2 weeks

Having measured 500,000,000 Bq/m3 of Tritium from groundwater [URL], Tepco conducted the tritium analysis of seawater of Fukushima nuclear plant port.

According to their press release on 6/24/2013, Tritium level increased to be over double within 2 weeks. It is assumed that Tritium

is significantly leaking into the sea for some reason.



Sample : Seawater

Sampling location : North of water intake of reactor 1 ~ 4

6/21/2013 : 1,100,000 Bq/m3

6/10/2013 : 500,000 Bq/m3



Sample : Seawater

Sampling location : In front of the sea bank (cf, Fukushima plant tide embankment is still in the temporary state “EXIF of the picture is removed” [URL])

6/21/2013 : 910,000 Bq/m3

6/14/2013 : 600,000 Bq/m3


Tepco states they are going to continue to analyze seawater, but it doesn’t stop the sea contamination anyway.


Related article..4500 Mega Bq/m3 of Tritium detected on the east side of reactor2, “Sr-90 data is UNDER ANALYSIS” [URL 2]



I see no hope in the old system of Japan.


Français :

Le niveau en tritium de l’eau de mer a plus que doublé en 2 semaines


Après avoir relevé 500 000 000 Bq/m³ de tritium dans les eaux souterraines [Lien], Tepco a procédé à des analyses de l’eau de mer du port de la centrale nucléaire de Fukushima.

Selon leur communiqué de presse du 24 juin 2013, le niveau du tritium est monté à plus du double en 2 semaines. On pense que le tritium fuit gravement dans la mer.

Échantillon : Eau de mer
Lieu : Nord de la prise d’eau des réacteurs 1 à 4
21 juin 2013 : 1 100 000 Bq/m³
10 juin 2013 : 500 000 Bq/m³

Échantillon : Eau de mer
Lieu : En face de la digue à la mer (cf. La digue de la centrale de Fukushima est toujours en état provisoire, la partie EXIF de la photo est enlevée)
21 juin 2013 : 910 000 Bq/m³
14 juin2013 : 600 000 Bq/m³

Tepco affirme qu’ils vont continuer à analyser l’eau de mer mais ça n’arrêtera pas la contamination.

Article lié : 4 500 MBq/m³ de tritium du côté Est du réacteur 2. C’est “ANALYSE EN COURS” pour le strontium 90


Je ne vois aucun espoir dans l’ancien système japonais

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.


June 2013