Tepco found 2 “pinholes” on multiple nuclide removing system ALPS

On 6/15/2013, Tepco reported about the “possible” leakage from the multiple nuclide removing system ALPS. They measured 6,700,000,000 Bq/m3 of all β from the “possible” leaking water.

(cf, Multiple nuclide removing system ALPS possibly leaks in the test operation [URL])

(cf, 6,700,000,000 Bq/m3 of all beta detected from the leaking water of multiple nuclide removing system [URL 2])

On 6/18/2013, Tepco reported they found 2 pinholes (micropore) on the weld line of the tank.

In addition to ALPS, there are 1,000 tanks to stock contaminated water (1,000 tones each). 270 of them are not even welded.

(cf, 27% of the highly contaminated water tanks will need repairs in 2016, “1,000 tones for each” [URL 3])


↓ Detailed report about the “possible” leakage

Tepco found 2 "pinholes" on multiple nuclide removing system ALPS


2 Tepco found 2 "pinholes" on multiple nuclide removing system ALPS


3 Tepco found 2 "pinholes" on multiple nuclide removing system ALPS





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Français :

Tepco a trouvé 2 “trous d’épingle” sur le système de filtrage multi-nucléide ALPS


Le 15 juin 2013, Tepco publiait sur une “possible” fuite du système de filtrage multi-nucléide ALPS. Ils avaient relevé  6 700 000 000 Bq/m³ de radiations β à partir de la fuite “possible” .
(cf. Le système de filtrage multi-nucléide ALPS a sans doute fuit pendant les opérations de test)
(cf. 6 700 000 000 Bq/m³ de beta-nucléides relevés dans l’eau de la fuite du système de filtrage multi-nucléides)

Le 18 juin 2013, Tepco publie qu’ils ont trouvé 2 trous d’épingles (micropores) sur la ligne de soudure de la citerne.
En plus de ALPS, il y a 1 000 citernes de stockage des eaux extrêmement radioactives (de 1 000 tonnes chacune). 270 d’entre elles ne sont même pas soudées. (cf. 27% des réservoirs à eaux hautement contaminées vont nécessiter des réparations en 2016, “1 000 tonnes chacun”)

↓ Rapport détaillé sur les fuites “possibles”
Tepco a trouvé 2
2 Tepco a trouvé 2
3 Tepco a trouvé 2


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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