Post-Fukushima Report: Concern over Plutonium and Uranium being deposited and re-concentrating far away — Isotopes transfer to land via sea spray, aerosols, flooding — Human exposure by inhalation, food, contact

Friday, December 27, 2013
By Paul Martin
December 27th, 2013

House of Commons Energy and Climate Change Committee (pdf), Volume II Additional written evidence, Sixth Report of Session 2012–13:

Recommendations for post event marine monitoring programmes

[…] At Fukushima the monitoring authorities chose to focus on those isotopes (iodine and Caesium) [and] failed to investigate the presence, concentration and radiological significance of “hot” particles of reactor fuel, used fuel from cooling ponds and/or pieces of reactor of cooling pond structure released into coolant and ECW [Emergency Cooling Water] flows as a result of explosion, meltdown, containment breach, washout of coolant and through flow of ECW.

[…] Such a programme should identify near, mid and far field end fate deposition environments (seabed and inter tidal fine sediment deposits) where very long lived, non-soluble isotopes of Plutonium, Americium, Uranium and Curium might be expected to deposit out and re-concentrate relative to ambient water column concentrations.

[…] scientifically attested work […] has demonstrated the ability of several isotopes […] to re-concentrate in marine micro layers, marine sea sprays and marine aerosols and hence to transfer from the sea to the land [with] potential human exposure via inhalation, contact etc.

[…] such isotopes […] have been shown to transfer from the sea to the land (via sea spray, aerosols, flooding) and to contaminate terrestrial foodstuffs and thus enter terrestrial dietary chains.

[…] radioactivity deposited in inter tidal sedimentary environments has been shown to be susceptible to re-suspension (in drying conditions) and blowing ashore adsorbed to fine sediment particles to contaminate house dust and perhaps terrestrial foodstuffs […]

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