Tag Archives | Risk Management

Managing the risks and consequences of a large polluting accident

The J-value framework (J for Judgement) is an integrated methodology that generates objective advice on how much should be spent to avert human harm and environmental loss. It estimates the maximum it is reasonable to spend on a safety measure or system by balancing the safety expenditure against the increase life expectancy it brings about.

At its core is the concept of the life-quality index (LQI), which is an increasing function of both life expectancy and annual utility, with risk-aversion used to convert monetary income to utility – the satisfaction that the money brings. The maximum reasonable expenditure will have been reached when the increase in the LQI due to the greater life expectancy the safety measure confers is just matched by the decrease in life quality associated with the fall in income incurred by paying for it.

The presentations will challenge the conventional thinking of how to manage the consequences of both large nuclear accidents and large polluting accidents and will demonstrate how the J-value can aid decision-making by Governments, Regulatory Bodies and other organisations concerned with post-accident response.

12.00 – 12.20 - Presentation by Professor Philip Thomas: Professor of Risk Management, University of Bristol

12.20 – 12.40 - Presentation by Dr Ian Waddington: Senior Software Engineer

12.40 – 13.00 - Discussion forum (Q&A) chaired by Mr Nick Shaw: Chair of Board of Trustees, Hazards Forum


You can register for this free webinar via the ICE website.

Event page
Continue Reading
J value

Nuclear safety analysis tool applied to Covid-19 lockdown scenarios

New analysis from the University of Bristol has evaluated options available to national governments to combat the COVID-19 pandemic using the J Value method, previously applied to mass evacuation scenarios. The method empirically assesses expenditure of a safety scheme against the value of life and potential gains in life expectancy. The research paper, published in […]

Continue Reading

Fukushima Secondary Health Effects Symposium

  • Tuesday 10th December
  • 2.30-5.15pm
  • David Smith Building, University of Bristol

Seminar Agenda

Talk 1: Professor Masahuaru Tsubokura, Fukushima Medical University. Evaluating Secondary health issues from the Fukushima Daiichi accident

Talk 2: Dr Ian Waddington, Analytic Eye. The J Value and the NREFS project: Management of Nuclear Risk Issues: Environmental, Financial and Safety

Talk 3: Dr Peter Martin University of Bristol. Environmental radiation mapping and robotics fieldwork in Japan

Talk 4: Professor Philip Thomas, University of Bristol. Why the most risk averse people sometimes take the riskiest decisions


Spaces for this seminar are limited so please register via this short form:

Eventbrite page

Speaker Biographies


Dr. Masaharu Tsubokura is a Specially Appointed Professor at the Department of Public Health in Fukushima Medical University School of Medicine. After the Fukushima nuclear power plant accident in 2011, he worked with local municipalities in Fukushima, and played an important role in the establishment of the internal radiation exposure screening programs for the local residents.

He is also a member of the committee on radiation protection and public health in Minamisoma and Soma Cities, and has actively sought to provide radiation seminars to the public, to respond to public worries about the effects of radiation exposure on health.





Professor Philip Thomas is Professor of Risk Management at the University of Bristol. He previously held a Chair in Engineering Development at City University, London.  He has published over 100 articles on control, instrumentation, nuclear decommissioning, risk assessment and economics.

His work in risk analysis and management, and particularly the J Value project, has excited the interest of the national and international press; his findings have been covered by both broadsheets and the popular press




Dr Peter Martin is a Research Associate in the Interface Analysis Centre at the University of Bristol.

His research spans a broad spectrum of nuclear materials, radiation detection/characterisation and sensor-based systems. Dr Martin has conducted a significant amount of fieldwork in Japan and the Fukushima Daiichi Nuclear Power Plant investigating the evolving distribution of contamination as well as applying novel micro-analysis techniques.




Dr Ian Waddington is a Senior Software Engineer at Analytic Eye. Ian leads on the software support for the J-Value project, an innovative tool that assesses the cost-effectiveness of safety schemes for a wide range of industries.

The J Value is a core part of the NREFS project: Management of Nuclear Risk Issues: Environmental, Financial and Safety that assessed mass evacuation after a large nuclear accident such as that at Fukushima Daiichi against gains in life expectancy.

Continue Reading

Nuclear South West Risk Factors Workshop

Interested in potential supply opportunities within the Hinkley Point C project?

Calling all SME companies based in the South West and South Wales looking to enter the Nuclear Sector.

This fully funded* workshop will help you incorporate the following factors into your strategy to minimise your risk and assist in maximising profits:

  • Benchmarking your current costing and pricing policy
  • Recognising nuclear risk factors
  • Managing the pricing process to be competitive int eh nuclear sector

Learn how to evaluate your current business practices when pricing for nuclear-driven requirements.

To book or find our more information email: maria.ison@swmas.co.uk

*Fully funded for SME (small and medium enterprise) companies based in Devon, Somerset, Bristol, Bath and North East Somerset and Wales. If you are an LE (large enterprise) or a South West supplier based outside these funded regions, there will be a charge of £125 to attend this workshop. Please contact us for more information.

Continue Reading 0
poster image

Homes should not be abandoned after a big nuclear accident

New research suggests that few people, if any, should be asked to leave their homes after a big nuclear accident, which is what happened in March 2011 following the Fukushima Daiichi nuclear disaster. This is the main finding of a multi-university research study led by Philip Thomas, Professor of Risk Management at the University of […]

Continue Reading 1