British robots glimpse inside the Fukushima plant — The Telegraph

” Japan may be obsessed with robots, but it is a British company that has solved the “impossible” problem of visualising the radiation leaks inside the crippled reactor buildings at Fukushima.

State-of-the-art British imaging technology has been deployed at Japan’s crippled Fukushima nuclear plant to overcome problems that Japanese engineers declared to be insurmountable.

Designed by Cumbria-based Createc, N-Visage cameras have been mounted on remote-controlled drones and caterpillar-tracked robots that can navigate the insides of the three reactor buildings that suffered melt-downs after an earthquake and tsunami hit Fukushima in 2011.

Coupled with unique software, the £200,000 system is able to create a real-time, three-dimensional image of the area being surveyed and identify “hot-spots” of radioactivity.

More than four years after the second-worst nuclear accident in history, radiation levels within the structures remain too high for humans to enter.

British nuclear experts help to decommission Fukushima

That has severely hampered efforts to determine the problems that need to be solved to safely decommission the reactors and clean up the site. Experts have already estimated that process will take three decades but progress to date has been slow.

Tokyo Electric Power, the operator of the plant, was only able to confirm on Thursday previous suspicions that nearly all the fuel from the No. 1 reactor at the plant has melted and fallen into the containment vessel. Two more reactors appear to have experienced similar fates and Tepco is now conducting further tests to confirm that assumption.

“There was some scepticism from Tepco when we were first introduced to their representatives in the UK in April 2012, but they very quickly saw the possibilities”, said Dr Matt Mellor, director of Createc.

“One of their guys said it was like finding a Picasso in the loft because their experts had told them that what we do was impossible”, he added.

Abandoned towns around Fukushima plant

Working in tandem with nuclear unit of Hitachi-GE Nuclear Energy, Createc engineers first visited the Fukushima plant in 2013.

“It was a shocking sight”, said Dr Mellor. “Even more than a year after the tsunami, the damage to the reactors was clear. Vehicles were still laying around the site, fences had been crushed, storage tanks had been flattened and radiation levels in the immediate area of the reactors was still very high.

“Nuclear sites are usually tidy and organised because they have to be, so it was clear this was going to be a major challenge from the outset”, he added.

As well as using remote-controlled vehicles to get the N-Visage system into the damaged buildings, engineers drilled holes through the roof and lowered imaging equipment into the interior.

Createc has permitted Japanese nuclear engineers to undertake a “virtual walk” through the plant and has mapped areas with the very highest concentrations of radiation, which will in the future enable engineers to shield and isolate such “hot spots”.

“It has blown the socks off the engineers at Fukushima,” said Pete Woolaghan, a director of Createc. “We have been able to give them an accurate and exact image of the dose environment that they are faced with, which is enabling them to formulate plans with far more certainty and safety.

“Previously, they were working with educated guesses”.

A bus ride through Japan’s nuclear wilderness

The N-Visage system has been deployed at plants that are undergoing decommissioning processes in the UK, including Sellafield, and has attracted interest from the US nuclear industry.

The Japanese government has this month announced plans to decommission five nuclear reactors, the first time that Japanese plants will have been dismantled. With limited experience and capabilities in this specialist area, Createc and other British firms are anticipating an increase in opportunities in Japan. ”

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Robot to work at Fukushima disaster scene — Übergizmo

” Robots are wonderful workers for a few reasons – they do not get tired, [and neither do they] complain [nor] will they congregate around a water cooler to gossip about their superior and his or her flaws. Not only that, robots do not have union[s] and [are] unable to go on strike – not to mention in a more practical manner, enter places which are deemed dangerous for the average man on the street – such as at a nuclear disaster site as we have seen in the past. This time around, a UK start-up has developed a robot that will help to locate hazardous radiation sources at the scene of the Fukushima disaster in Japan.

Createc is the company behind the camera technology known as N-Visage which will see [robots in action] suited up for such a task, where [they] detect and draw a 3D map of high radiation locations which are deemed to be too contaminated for human workers to actually be in.

This is a big step for UK companies where the realm of robotics are concerned, as British ministers intend to see the UK play catch up with other countries such as the US, Japan and South Korea. The N-Visage camera technology that is implemented in stair-climbing robots will allow those robots to arrive at inaccessible areas that are located deep inside the nuclear site. ”