Proposed nuclear power plants in the UK –

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MISSION STATEMENT To ensure that people in Ireland are protected from the harmful effects of radiation Contact Us Radiological Protection Institute of Ireland 3 Clonskeagh Square Dublin 14 Ireland Tel: 01 2697766 Fax: 01 2697437 Web: www.rpii.ie
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Proposed nuclear power plants in th
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i RPII 13/01 Proposed nuclear power
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determine all the possible ways tha
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Potential accident scenarios and co
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4.1 Methodology for assessing the i
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Annex 6. Nuclear and Radioactive Wa
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Figure 34. Percentage contribution
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List of tables Table 1. Assumed ann
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1 Introduction The UK Government ha
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used in the assessment of the accid
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particles or redissolution. These e
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operations 2 . Both vendors describ
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2.2.2 Assessment of environmental t
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A turbulent transport component rep
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Figure 5. Representative annual ave
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The variability of deposition rates
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As there is no direct method for us
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north Wales is just over 100 km fro
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and the time the family is assumed
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prediction models to forecast futur
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contribute a somewhat higher propor
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namely, Civaux, a precursor of the
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Figure 18. General circulation patt
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Figure 19. Schematic showing pathwa
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For all groups, the time spent on t
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The environmental concentrations pr
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Figure 21. Comparison of contributi
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Figure 23. Predicted time progressi
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1.0,) respectively. The radiation d
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3.1 Mining and milling of uranium N
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the resultant spent fuel arising fr
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toxicity of the waste, the activity
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egulatory framework in the UK for t
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4 Assessment of the potential impac
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The initial part of the assessment
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Table 19. Description of accident s
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elease rates over the duration of t
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factors for the foods and animal fe
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Wylfa Moorside Heysham Oldbury 61
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Wylfa (24 h release) Wylfa (48 h re
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Based on the analysis of the result
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(a) (b) (c) Figure 32. Comparison o
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Table 26. Emergency intervention le
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equire protective actions if the pl
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this assumption, the same models we
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Figure 38. Ingestion dose by radion
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etween deposition and the harvestin
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(a) Plant foods (b) Meat (c) Dairy
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Table 29. Maximum permitted levels
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(a) ‘Other foodstuffs’ (b) Dair
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While these controls have been show
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5.1 Identification of source terms
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Table 33. Radioactive release to se
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Hartnett, 2009; Olbert, et al., 201
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Figure 46. Example of the modelled
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The peak seawater activity concentr
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Radionuclide Release (GBq) Te-123m
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Similarly, the radioactivity concen
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MST2 - Equivalent to Fukushima Acci
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Figure 52. Breakdown of radiation d
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could lead to significant releases
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Table 40. Summary of impacts on Ire
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7 Bibliography Akinmboni, R., McMah
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EC, 2002. Guidance on the realistic
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McCubbin, D., Leonard, K. S. & Emer
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http://www.uranium.info/world_urani
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Fuel fabrication: Process to conver
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9 Acknowledgements The authors grat
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Table 42. Discharges from Sellafiel
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Other nuclear licensed sites in the
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Table 47. Principal discharges to a
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Appendix 2: Determination of potent
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Table 50. Derivation of annual disc
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adionuclides cannot be discharged i
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The recommended default value of ab
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Formulae used to calculate radiatio
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The density of the sediment (Dens),
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(a) Source: Nelson et al (2002) (b)
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temperatures at surface and bottom
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Appendix 5. Accident source terms O
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modelling. All the processes listed
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impacts. While for the UK, an earth
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This scenario is initiated by a com
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Ireland (more than 100 km). Instead
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particles) but some hot particles o
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(a) (b) Figure 60. Comparison of ra
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Nuclear power plant location (relea
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Nuclear power plant location (relea
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Annex 1: Framework of the UK’s pr
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Finnish and French regulators issui
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Figure A1.1. Map of proposed locati
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seismic risk at each site will be a
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DECC, 2009. Towards a Nuclear Natio
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Annex 2: Sites identified as suitab
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any mitigation measures. The effect
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A2.3 Moorside The new build site at
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A2.5 Wylfa The site at Wylfa is loc
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EDF Energy has a grid connection ag
Page 204 and 205: However, the Environment Agency has
Page 206 and 207: Annex 3: Nuclear reactor types prop
Page 208 and 209: produced tend to have long half liv
Page 210 and 211: vessel. The pressure vessel’s fun
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Page 214 and 215: coolant accident (LOCA) with the lo
Page 216 and 217: AP1000 passive safety-related syste
Page 218 and 219: References: AREVA NP & EDF, 2008. T
Page 220 and 221: Annex 4. Regulatory framework under
Page 222 and 223: IRR99 require employers to keep exp
Page 224 and 225: For the Convention on Nuclear Safet
Page 226 and 227: Commission (HSC) 82 . The HSC has s
Page 228 and 229: tolerability limits for risk result
Page 230 and 231: To date there has never been a tran
Page 232 and 233: Annex 5. The Nuclear Fuel Cycle The
Page 234 and 235: Figure A5.3. World uranium mining m
Page 236 and 237: is purchased on the international m
Page 238 and 239: transport of the spent fuel is now
Page 240 and 241: of a facility with radioactive mate
Page 242 and 243: WNA, 2011c. World Uranium Mining. [
Page 244 and 245: Low Level Waste (LLW) is defined as
Page 246 and 247: Since it commenced operations in 19
Page 248 and 249: A6.4 Intermediate Level Waste Manag
Page 250 and 251: steel canisters), and low permeabil
Page 252 and 253: year period of underground research
Page 254: WNA, 2011. Nuclear Power in the Uni
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