Archive | Case Studies

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 […]

Continue Reading 0
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 […]

Continue Reading 0
Figure 1 - sludge retrieval in action. This uses a large vacuum pump to transport the waste into a separate tank elsewhere on the Sellafield site.

In-situ Raman Spectroscopy of Sludge

Research Area: Waste and Fuel Management PI: Prof. Thomas Scott Funders: Posiva Oy, SKB Contact details: Kate Wyness, kw14747@bristol.ac.uk The Challenge Currently there are two legacy storage pond facilities based in Sellafield, Cumbria, the largest decommissioning and processing plant in the UK. These facilities were originally built to handle waste from the 1950’s plutonium breeder […]

Continue Reading 0
Figure 2 - the European Synchrotron Radiation Facility (ESRF), Grenoble, France; where the first single crystal thin film dissolution experiments were performed at beamline BM28.

Storage of Nuclear Fuel: Radiolytic Dissolution at the UO2/H2O Interface

Research Area: Waste and Fuel Management PI: Miss Sophie Rennie Contact details: Sophie.Rennie@bristol.ac.uk The Challenge A key problem facing the nuclear industry is the safe and efficient long-term storage of nuclear fuel. The long-lived radiation fields that result from highly radioactive fission products require spent nuclear fuel to be stored over timescales of tens of […]

Continue Reading 0
Figure 1

PLATINUM – Pulsed Laser Accelerators for the Inspection of Nuclear Materials

Research Area: Waste and Fuel Management PI: Dr Chris Jones Contact details: cj0810@bristol.ac.uk The Challenge As of 2013 the UK currently stores 120,000 tonnes of Intermediate Level Waste (ILW) nationwide, with a further 190,000 tonnes predicted from decommissioning existing sites. This waste is reprocessed prior to storage in 500 litre stainless steel drums backfilled with […]

Continue Reading 0
Figure 2 - characteristic FE model showing the evolution of grout cracking as the corrosion—induced volume expansion progresses in the interior of the drum.

Evaluation of Waste Package Degradation Resulting from Metallic Corrosion

Research Area: Waste and Fuel Management PI: Mr Haris Paraskevoulakos Partners: Diamond Light Source Contact details: cp13846@bristol.ac.uk The Challenge Within the UK, nuclear waste is classified according to the levels of radioactivity in three groups: High Level Waste (HLW), Intermediate Level Waste (ILW) and Low Level Waste (LLW). ILW mostly consists of metallic fragments arisen […]

Continue Reading 0
diamond featured image

Diamond Detectors for Dose Rate Measurements in Highly Active Environments

Research Area: Waste and Fuel Management PI: Dr Chris Hutson Partners: Sellafield Funders: NNL Contact details: Chris.Hutson@bristol.ac.uk The Challenge Decommissioning legacy nuclear facilities requires innovative characterisation technologies due to extreme levels of radioactive hazard, which destroys or saturates conventional detectors. Such technologies will be required to map multiple sources of radioactivity in facilities which have […]

Continue Reading 0
Figure 3

Use of an Ice Pig to Help Reduce and Remove Active Contamination

Research Area: Waste and Fuel Management PI: Prof. Joe Quarini Partners: Agbar Environment Contact details: Joe.Quarini@bristol.ac.uk The Challenge One of the important aspects of nuclear decommissioning is minimising the resultant contaminated volumes. The use of water, acids, organic solvents in cleaning contaminated equipment results in difficult/embarrassing to handle volumes of active effluent streams. The problem […]

Continue Reading 0
Earth

Looking Deep Into the Future for Nuclear Waste Repositories

Research Area: Waste and Fuel Management PI: Dr Natalie Lord Funders: Posiva Oy, SKB Contact details: Natalie.Lord@bristol.ac.uk Project website: https://southwestnuclearhub.ac.uk/2017/12/04/looking-deep-into-the-future-for-radioactive-waste-disposal/ The Challenge Researchers in Geographical Sciences at University of Bristol have looked deep into the future with their Earth system models to assess the state of the globe over the course of the next million […]

Continue Reading 0

NRC