Author Archive | George Riley

Magnetic Tensile Testing of Eurofer97 at 550°C

Research Area: Structural Integrity PI: Dr Mehdi Mokhtarishirazabad Funders: UKAEA Contact details: m.mokhtari@bristol.ac.uk The Challenge As part of the Spherical Tokamak for Energy Production (STEP) programme, UKAEA has a requirement to better understand the behaviour of structural materials in the presence of a magnetic field. A breeding blanket and divertor cassette are the key parts […]

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A render of the as-constructed diamond gammavoltaic, mounted on an SMA head for testing, and here reproduced for monte carlo simulation purposes.

Diamond Gammavoltaic Cells for Biasless Gamma Dosimetry

Research Area: Monitoring PI: Mr Robbie Mackenzie Funders: EPSRC, Sellafield Ltd. Contact details: gm12172@bristol.ac.uk The Challenge Diamond dosimeters are reliable and well-characterised, with significant development having been undertaken within the SWNH [1]. Simple and radiation hard, they have no measured upper limit for dose rate and will continue to operate after other dosimetry technologies have […]

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kuka arm

INTEGRAL – Remote-Operated Nuclear Waste Characterisation and Decontamination Management

Research Area: Waste and Fuel Management PI: Prof. Tom Scott Partners: TWI, ImiTec Ltd., National Centre for Nuclear Robotics Contact details: t.b.scott@bristol.ac.uk The Challenge The 2013 UK Radioactive Waste Management reports highlighted that the total volume of UK radioactive waste across NDA sites was ~165,000m3. The volume of future waste was forecast to be 4,330,000m3. […]

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Figure 1 - Conditions near volcanoes to take measurements can be extremely dangerous.

Advanced Self-Powered ‘Dragon egg’ Sensor Units

Research Area: Monitoring PI: Prof. Tom Scott, Prof Bernard Stark, University of Bristol Partners: Sensor Driven Ltd, University of Cambridge, University of Sheffield, National Centre for Nuclear Robotics Contact details: t.b.scott@bristol.ac.uk,  bernard.stark@bristol.ac.uk The Challenge Volcanoes are inherently unpredictable, therefore it is notoriously difficult to record their behaviour into reliable analytical models – instead, real-time data of […]

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Physical Model of an AGR Nuclear Reactor Graphite Core for Shaking Table Explorations of Seismic Behaviour

Research Area: Structural Engineering PI: Professor Colin Taylor, Dr Adam Crewe Partners: EDF Energy, Atkins Contact details: colin.taylor@bristol.ac.uk The Challenge Sponsored by EDF-Energy Ltd, the ongoing PLEX (Plant Life Extension) project was initiated in 2008. To date EDF have invested around £6.5M in the project and work is expected to continue over the next few […]

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High-Resolution Radiation Mapping to Characterise Contamination

Research Area: Waste and Fuel Management PI: Dr Peter Martin and Mr Dean Connor Partners: Sellafield Ltd. Contact details: Peter.Martin@bristol.ac.uk and Dean.Connor@bristol.ac.uk The Challenge Radiological contamination exists at numerous sites worldwide; whether the result of large-scale radiological release events (such as the Fukushima Daiichi Nuclear Power Plant accident in March 2011), following nuclear weapons testing, […]

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Figure 1 - Left -Test set up for impression creep testing on HAZ slices, right – a HAZ slice.

Creep Deformation and Damage During Stress Relaxation in Stainless Steel Weldments Operated at High Temperature

Research Area: Structural Engineering PI: Mr Satyajit Dey Funders: EDF, Atkins Contact details: sd15325@bristol.ac.uk The Challenge Many engineering steel components used in power generation plants are operated at creep regime temperatures. This means that the steels are susceptible to creep and stress relaxation. It is important to estimate the amount of creep strain accumulation during […]

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Figure 2 - EPR Reactor pressure vessel in the installation process at Oikiluoto (June 2010 – image: Framatome).

ATLAS+ Advanced Structural Integrity Assessment Tools for Safe Plant Operation

Research Area: Structural Engineering PI: Dr Mahmoud Mostafavi Partners: 18 Partners across Europe including VTT Finland, EDF Group, Framatome, and CEA Funders: EU Contact details: M.Mostafavi@bristol.ac.uk Project Website: http://nugenia.org/portfolio_item/atlas/ The Challenge There are 15 nuclear reactors in the UK and many more around Europe. Many of these reactors have been or will be working past […]

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Figure 1 - The Diamond Light Source
(Source: Diamond Light Source)

Improving Life Assessment Procedure for Current and Future Generation Nuclear Power Plants

Research Area: Structural Engineering PI: Prof. David Knowles Partners: EDF Energy Funders: EDF Energy, EU Contact details: c.simpson@bristol.ac.uk; abdullah.mamun@bristol.ac.uk; z.zhang@bristol.ac.uk The Challenge Materials in nuclear power plants operate in extreme conditions (high temperatures and stresses) over lifespans that extend for many decades. The current generation of advanced gas cooled reactor plants have been in service […]

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