International Atomic Energy Agency (IAEA) e netefalitse hore boemo ba tritium sehlopheng sa bone sa pheko e hlapollotsoeng. metsi, eo Tokyo Electric Power Company (TEPCO) e qalileng ho e sebelisa ka la 28 Hlakola 2024, e ka tlase haholo ho moeli oa tšebetso oa Japane.
Litsebi tse emeng sebakeng sa Fukushima nyutlelie matla seteishene (FDNPS) se ile sa nka lisampole ka mor'a ho phekoloa metsi e hlapollotsoe ka metsi a leoatle litsing tsa phepelo ka la 28 Hlakola. Tlhahlobo e netefalitse hore mahloriso a tritium a ka tlase haholo ho moeli oa ts'ebetso oa 1,500 becquerels ka litara.
Japane e fana ka phekolo metsi ho tsoa ho FDNPS ka lihlopha. Lihlopha tse tharo tse fetileng - kakaretso ea 23,400 cubic metres ea metsi - li boetse li netefalitsoe ke IAEA hore li na le likhahla tsa tritium tse ka tlase ho meeli ea ts'ebetso.
Ho tloha ha kotsi e hlaha ka 2011, metsi hoa hlokahala ho tsoela pele ho pholisa mafura a qhibilihileng le litšila tsa mafura sebakeng sa Fukushima Daiichi NPS. Ho phaella ho metsi ha a pompeloa ka morero ona, metsi a ka tlas'a lefatše le 'ona a kenella setšeng ho tsoa tikolohong e potolohileng, 'me metsi a pula a oela ka har'a setsi se senyehileng sa merafo le meaho ea turbine. Neng metsi e kopana le mafura a qhibilihisitsoeng, litšila tsa mafura le lintho tse ling tse nang le mahlaseli a kotsi, e fetoha e silafetseng.
E silafetseng metsi is tšoaroa ka mokhoa oa ho hloekisa o tsejoang e le Advanced Liquid Processing System (ALPS) e sebelisang letoto la lik'hemik'hale ho tlosa li-radionuclide tse 62 metsing a silafetseng pele li bolokoa. Leha ho le joalo, tritium e ke ke ea tsoa metsing a silafetseng ka ALPS. Tritium e ka khutlisoa ha e kenelletse haholo metsing a manyane, mohlala ho nyutlelie lisebelisoa tsa ho kopanya. Leha ho le joalo, metsi a bolokiloeng Fukushima Daiichi NPS a na le khatello e tlaase ea tritium ka bongata bo boholo ba metsi 'me kahoo theknoloji e teng ha e sebetse.
Tritium ke mofuta oa tlhaho oa radioactive oa hydrogen (halofo ea bophelo lilemo tse 12.32) e hlahisoang sepakapakeng ha mahlaseli a bokahohle a thulana le limolek'hule tsa moea 'me a na le tšusumetso e tlaase ka ho fetisisa ea mahlaseli a radionuclide ka tlhaho metsing a leoatle. Tritium hape ke sehlahisoa sa ts'ebetso nyutlelie lifeme tsa motlakase ho hlahisa motlakase. E ntša likaroloana tse fokolang tsa beta, ke hore, lielektrone, tse nang le matla a karolelano ea 5.7 keV (kiloelectron-volts), e ka phunyeletsang hoo e ka bang 6.0 mm ea moea empa e ke ke ea phunyeletsa 'meleng ka letlalo la motho. E ka hlahisa kotsi ea mahlaseli ha e hema kapa e ka kenngoa empa e le kotsi ho batho feela ka tekanyo e kholo haholo.
Hajoale, metsi a silafetseng a hlahisoang Fukushima Daiichi NPS aa phekoloa le ho bolokoa setšeng ka litanka tse lokiselitsoeng ka ho khetheha. TEPCO, mosebeletsi oa polante, e kentse litanka tse ka bang 1000 sebakeng sa Fukushima Daiichi NPS ho boloka metsi a ka bang limilione tse 1.3 tsa metsi a hloekisitsoeng (ho tloha ka la 2 Phuptjane 2022). Ho tloha ka 2011, bophahamo ba metsi a polokelo bo eketsehile butle-butle, le tanka ea hona joale sepakapakeng moo e fumanehang ho boloka metsi ana a haufi le ho tlala.
Le hoja lintlafatso li entsoe ho fokotsa haholo lebelo leo metsi a silafetseng a hlahisoang ka lona, TEPCO e entse qeto ea hore tharollo ea nako e telele ea ho lahla e ea hlokahala ho thusa ho netefatsa hore setša se tsoela pele ho tlosoa. Ka Mmesa 2021, Mmuso wa Japane o ile wa fana ka Leano la ona la Motheo le hlalosang taelo ya ho lahlela metsi a hlwekisitsweng ke ALPS ka ho qhallwa ho laolwang lewatleng ho tla qalwa nakong ya dilemo tse 2, ho itshetlehile ka tumello ya taolo ya lehae.
Ka la 11 Hlakubele 2011, Japane e ile ea sisinngoa ke Great East Japan (Tohoku) Tšisinyeho ea lefatše. E ile ea lateloa ke tsunami e ileng ea fella ka hore maqhubu a fihle bophahamong ba limithara tse fetang 10. The tšisinyeho ea lefatše mme tsunami e ile ya baka kotsi e kgolo Fukushima Daiichi Nuclear Seteishene sa Motlakase, se ileng sa qetella se arotsoe e le Level 7 ho Machabeng Nuclear le Radiological Event Scale, boemo bo lekanang le ba Chernobyl ea 1986 kotsi leha ho le joalo litlamorao tsa bophelo bo botle ba sechaba ho Fukushima ha li mpe haholo.
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mehloling
- IAEA. Phatlalatso ea boralitaba - Boemo ba Tritium bo ka tlase haholo ho moeli oa ts'ebetso oa Japane sehlopheng sa bone sa metsi a hloekisitsoeng a ALPS, IAEA e tiisa. E phatlalalitsoe ka la 29 Hlakubele 2024. https://www.iaea.org/newscenter/pressreleases/tritium-level-far-below-japans-operational-limit-in-fourth-batch-of-alps-treated-water-iaea-confirms
- IAEA. Fukushima Daiichi ALPS e Tlisoang ka Metsi a Hlatsoang. Sistimi e tsoetseng pele ea ho sebetsa ka metsi (ALPS). https://www.iaea.org/topics/response/fukushima-daiichi-nuclear-accident/fukushima-daiichi-alps-treated-water-discharge
- IAEA. Kotsi ea Nyutlelie ea Fukushima Daiichi https://www.iaea.org/topics/response/fukushima-daiichi-nuclear-accident
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 has confirmed that the tritium level in the fourth batch of diluted treated water, which Tokyo Electric Power Company (TEPCO) started discharging on 28 February 2024, is far below the Japan’s operational limit. ){kind=link}