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Exploring the leukaemia link
08 December, 2011
The latest report of the UK committee on medical aspects of radiation in the environment (COMARE) in May 2011 again finds no link between nuclear power plants and leukaemia in Great Britain; it also analyses results from the German KiKK study, which did find a link. An excerpt is reproduced here, together with responses to queries made since publication.

The low-power SVBR 100
27 October, 2011
A reactor design originally used in Russian nuclear submarines can be linked together in multiple units to form a modular nuclear power plant. The safety features of its design, including the relatively small amount of energy/m3 of coolant, would prevent the kind of radiation release seen at Fukushima Daiichi, given similar initiating events, enabling its installation in towns and factories. By V. V. Petrochenko

Fukushima Daiichi crisis | Tsunami
27 October, 2011
Since the Fukushima accident there has been greater awareness of the risk from tsunami to reactors in seismically-active areas. It is important, however, to realise that tsunami include a wider range of phenomena that could impact a variety of nuclear facilities in different geographical settings. By Ian G. McKinley, W. Russell Alexander and Hideki Kawamura

Simplified Modeling of the Reactor Primary System and Containment Response following Reactor Scram
10 October, 2011
This document describes the simplified models used to predict the reactor primary system and containment response following scram. By James Healzer

A turnaround story
20 September, 2011
When Exelon was planning to buy the Salem and Hope Creek nuclear power plants in 2005, the utility began to transfer the stations to its own management model. This article describes that model and how its implementation led to improved performance at the New Jersey plants. By Kenneth Ainger

Pipe work
20 September, 2011
Following a major uprate in 2009, Sweden’s Oskarshamn 3 is due to start operating at its maximum capacity of 1450 MW next year. Part of the uprate project involved the structural verification of some 40km of reactor piping. By Lennart Jansson, Lingfu Zeng and Lars Dahlström

Packing up Bradwell's ILW
13 September, 2011
A year-long project has begun at Bradwell to tackle 45m3 of sludges and ion exchange media.

Could WIPP replace Yucca Mountain?
13 September, 2011
The 2010 decision by the?US Department of Energy to abandon the Yucca Mountain repository for high-level radioactive waste is still being played out. Yet in May the Blue Ribbon Commission on America’s Nuclear Future said that the need for a disposal solution is ‘inescapable,’ and that a mined repository is the most promising option. Could an expansion of the operating Waste Isolation Pilot Plant be a viable alternative to Yucca Mountain? By Christopher Timm and Jerry Fox

GE Hitachi: responding with the industry
22 August, 2011
Brian Johnson is VP, US markets for GE Nuclear Energy’s new plant business. Fukushima Daiichi is based on GE?designs.

Into Eternity
15 August, 2011
A film on limited release documents the world’s first underground spent fuel repository currently being constructed at Onkalo near Olkiluoto in Finland. By Penny Hitchin

A high-conductivity oxide fuel concept
15 August, 2011
Beryllium oxide (BeO) is proposed as an engineered additive to enhance the thermal conductivity of UO2. It was determined that the beginning-of-cycle reactivity may increase by about 2900 percent milliRho, resulting in an increase in cycle length of ~20 days with a potential increase in end-of-cycle burnup to about 4000 MWd/tHM. The average operating fuel temperature can be diminished by more than 150°C. By Sean M. McDeavitt, Jean Ragusa, Shripad T. Revankar, Alvin A. Solomon and James Malone

The UK utility response
15 August, 2011
In the days after the Japanese earthquake and tsunami in mid-March, the UK’s EDF Energy set up a crisis team and performed some short-term engineering checks of the seven advanced gas-cooled and one PWR stations it operates.

A watching brief
15 August, 2011
The need to ensure the integrity of interim waste packages over a longer-than-envisaged design life has led to an integrated approach to identify effective waste package monitoring solutions. By Jonathan Cox

Slowing down expectations
29 March, 2011
Since the 1970s, major decisions on development of sustainable closed fuel cycles have been based on the assumptions that uranium resources are limited and that consequently what is required is a fast reactor with as high a conversion ratio as feasible (which turns out to be 1.2 to 1.3). These assumptions drove fuel cycle decisions. The 2010 MIT study ‘The Future of the Nuclear Fuel Cycle’ concludes that both assumptions are incorrect—uranium resources are large and a conversion ratio of unity is preferred.

The science of aging well
28 March, 2011
A strategic planning economic analysis aims to put a price on different possible steam generator repair options. It considers both technical and economic factors, and estimates the results of uncertainties

Simplifying thermal creep
04 March, 2011
TN International (TNI) recently started a study of irradiated fuel cladding thermal creep in routine transport conditions to evaluate creep rupture risk of LWR fuel. Analytical calculations are not possible because of creep behaviour non-linearity and large number of input parameters. Finite Elements Analysis (FEA) is very time-consuming and inflexible in practice. Therefore, TN International has developed a simplified FORTRAN calculation model currently undergoing validation. By Maurice Dallongeville, Cédric Langlade and Aravinda Zéachandirin

The role of carbon prices
21 January, 2011
It is quite obvious that a price on carbon emissions has an impact on the competitiveness of nuclear power generation compared with the generation of electricity with fossil fuels, in particular coal. However, the magnitude of that impact is still imperfectly understood and it can vary depending on the form of carbon pricing. By Ron Cameron and Jan-Horst Keppler

Trouble on the horizon
21 January, 2011
On the surface, the UK’s nuclear new build programme has a serene inevitability about it. But rising construction costs and low and volatile electricity prices are indications that plenty could go wrong. By Tony Roulstone



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