Chapter 20 Assessment of radiation pollution from nuclear power plants

Nuclear power plants split uranium atoms in a process called fission. In a nuclear power plant, heat is generated to produce steam that spins a turbine to generate electricity. Nuclear energy has been proposed in response to the need for a clean energy source compared to CO2 production plants. However, nuclear energy is not necessarily a source of clean energy as nuclear power plants release small amounts of greenhouse emissions in activities related to building and running the plant. Moreover, even if all safety measures are followed, there is no guarantee that an accident will not occur in a nuclear power plant. In the case of an accident involving a nuclear power plant, the environment and the people around it may be exposed to high levels of radiation. Another important environmental problem related to nuclear energy is the generation of radioactive waste that can remain radioactive and dangerous to human health for thousands of years. There are also several issues with burying the radioactive waste. Here, we describe different types of radioactive waste pollution from nuclear power plants, their environmental effects, nuclear regulations, and nuclear power plant incidents. Moreover, two case studies on nuclear power plant accidents and their consequences are discussed

Cough aerosol in healthy participants: fundamental knowledge to optimize droplet-spread infectious respiratory disease management

<p>Abstract</p> <p>Background</p> <p>The Influenza A H1N1 virus can be transmitted via direct, indirect, and airborne route to non-infected subjects when an infected patient coughs, which expels a number of different sized droplets to the surrounding environment as an aerosol. The objective of the current study was to characterize the human cough aerosol pattern with the aim of developing a standard human cough bioaerosol model for Influenza Pandemic control.</p> <p>Method</p> <p>45 healthy non-smokers participated in the open bench study by giving their best effort cough. A laser diffraction system was used to obtain accurate, time-dependent, quantitative measurements of the size and number of droplets expelled by the cough aerosol.</p> <p>Results</p> <p>Voluntary coughs generated droplets ranging from 0.1 - 900 microns in size. Droplets of less than one-micron size represent 97% of the total number of measured droplets contained in the cough aerosol. Age, sex, weight, height and corporal mass have no statistically significant effect on the aerosol composition in terms of size and number of droplets.</p> <p>Conclusions</p> <p>We have developed a standard human cough aerosol model. We have quantitatively characterized the pattern, size, and number of droplets present in the most important mode of person-to-person transmission of IRD: the cough bioaerosol. Small size droplets (< 1 μm) predominated the total number of droplets expelled when coughing. The cough aerosol is the single source of direct, indirect and/or airborne transmission of respiratory infections like the Influenza A H1N1 virus.</p> <p>Study design</p> <p>Open bench, Observational, Cough, Aerosol study</p

'Fracking':Promoter and destroyer of 'the good life'

When discussing the effects of resource extraction in rural communities, academics commonly focus on specific and concrete impacts that fall nicely into the categories of environmental, economic, and social – for example, effects on water quality, jobs, and roads. A less common way of conceptualising effects of extractive industries, but more akin to way in which rural residents discuss and experience the complex set of effects, is changes to way of life. A growing literature explores effects on ‘wellbeing’ and ‘the good life’ as important determinants of responses to development projects, and as necessary considerations for policies regulating such development. One approach to conceptualising the good life – Aristotle’s ideas of eudaimonia (human flourishing) and the pursuit of eudaimonia (perfectionism) – remains underdeveloped as a means for characterising how rural residents respond to natural resource extraction. We use the example of unconventional gas development (UGD) to illustrate how definitions of human flourishing – and perfectionist pursuit of that flourishing – strongly motivate support for and opposition to a contentious extractive industry in the rural communities where development is occurring or is likely to occur (e.g., through commitments to: a rural way of life, retaining local population, beauty, peace, and/or quiet). Approximately fifty interviews across six US and three Canadian communities support this vital role for conceptions of human flourishing. The import of human flourishing to members of the public, and of them pursuing that flourishing through perfectionism, has crucial implications for communication and policy related to extractive development. Policy makers need to consider how the public’s definitions for flourishing shape their support/opposition, and not just to focus on the economic and environmental impacts commonly discussed in policy discourse