Low altitude unmanned aerial vehicle for characterising remediation effectiveness following the FDNPP accident.

Abstract:

:On the 12th of March 2011, The Great Tōhoku Earthquake occurred 70 km off the eastern coast of Japan, generating a large 14 m high tsunami. The ensuing catalogue of events over the succeeding 12 d resulted in the release of considerable quantities of radioactive material into the environment. Important to the large-scale remediation of the affected areas is the accurate and high spatial resolution characterisation of contamination, including the verification of decontaminated areas. To enable this, a low altitude unmanned aerial vehicle equipped with a lightweight gamma-spectrometer and height normalisation system was used to produce sub-meter resolution maps of contamination. This system provided a valuable method to examine both contaminated and remediated areas rapidly, whilst greatly reducing the dose received by the operator, typically in localities formerly inaccessible to ground-based survey methods. The characterisation of three sites within Fukushima Prefecture is presented; one remediated (and a site of much previous attention), one un-remediated and a third having been subjected to an alternative method to reduce emitted radiation dose.

journal_name

J Environ Radioact

authors

Martin PG,Payton OD,Fardoulis JS,Richards DA,Yamashiki Y,Scott TB

doi

10.1016/j.jenvrad.2015.09.007

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

58-63

eissn

0265-931X

issn

1879-1700

pii

S0265-931X(15)30102-8

journal_volume

151 Pt 1

pub_type

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