Annual Report for 2010/11 and Forward Programme - Sellafield Ltd

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Figure 2.3: Ratio of counts in the 137 Cs window (IW) to counts above this window (AW), fordata collected by Nuvia Ltd from the beach at St Bees between May 2007 and October 2008.2.2 Point Source SimulationsData specifying the date, location, depth and activity of all finds to date was supplied for usein this project. These data are tabulated in Appendix A. The distribution of the depths atwhich the finds have been recovered is shown in Figure 2.4. It can be seen that there are veryfew finds recovered from below 20cm depth, with the majority being recovered from the top10cm of the beach. Simulations of sources at depths that reasonably approximate therecovered finds are needed to simulate the response of the airborne detector to such sources.The first stage of this work simulated sources on the surface and at 10cm depth. In this stageof the work additional simulated spectra have also been produced for depths of 5cm, 15cmand 20cm, with the simulations for each range of recovered depth as given in Table 2.1.5
200150Number of finds1005000 5 10 15 20 25 30Depth (cm)Figure 2.4: Depth distribution of recovered particles from the beaches in the Sellafield area.Depth Range Simulated Depth Depth Range Simulated Depth0-2.5 cm 0 cm 12.5-17.5 cm 15 cm2.5-7.5 cm 5 cm >17.5 cm 20 cm7.5-12.5 cm 10 cmTable 2.1: Simulated depth of recovered particles6
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Particles in the EnvironmentAnnual
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SSEM/2011/4730 June 2011ContentsPur
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SSEM/2011/4730 June 2011List of Tab
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SSEM/2011/4730 June 20111. Introduc
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SSEM/2011/4730 June 2011Figure 2.1.
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SSEM/2011/4730 June 2011In August 2
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SSEM/2011/4730 June 20112.3.4 Find
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SSEM/2011/4730 June 2011as well as
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SSEM/2011/4730 June 2011The monitor
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SSEM/2011/4730 June 2011(Field Inst
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SSEM/2011/4730 June 2011number of f
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SSEM/2011/4730 June 20114.5004.000F
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SSEM/2011/4730 June 2011Table 3.5.
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SSEM/2011/4730 June 20113.1.5 Risks
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SSEM/2011/4730 June 2011presence of
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SSEM/2011/4730 June 2011Beta-rich A
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SSEM/2011/4730 June 2011Find Popula
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SSEM/2011/4730 June 2011Log Am241 A
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SSEM/2011/4730 June 2011Beach Find
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SSEM/2011/4730 June 2011Log Pu239 A
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SSEM/2011/4730 June 2011Figure 3.22
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SSEM/2011/4730 June 2011Table 3.9.
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2.52.72.93.13.33.53.73.94.14.34.54.
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SSEM/2011/4730 June 2011In summary,
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SSEM/2011/4730 June 2011particles h
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SSEM/2011/4730 June 2011• Boron,
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SSEM/2011/4730 June 2011Table 3.15.
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SSEM/2011/4730 June 2011Recommendat
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SSEM/2011/4730 June 2011Recommendat
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SSEM/2011/4730 June 2011homogeneous
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SSEM/2011/4730 June 2011[the Sellaf
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SSEM/2011/4730 June 2011Figure 3.33
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SSEM/2011/4730 June 2011 © Nuclea
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SSEM/2011/4730 June 2011 © Nucle
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SSEM/2011/4730 June 2011The finding
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SSEM/2011/4730 June 2011Communicati
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SSEM/2011/4730 June 20115. Health R
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SSEM/2011/4730 June 2011The numbers
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SSEM/2011/4730 June 2011wear gloves
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SSEM/2011/4730 June 20116. Aims and
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SSEM/2011/4730 June 2011specificati
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SSEM/2011/4730 June 20116.5 Primary
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SSEM/2011/4730 June 20113. Where ar
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SSEM/2011/4730 June 20115. What is
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SSEM/2011/4730 June 2011Fundamental
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SSEM/2011/4730 June 2011size and wi
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SSEM/2011/4730 June 201130 May Drig
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SSEM/2011/4730 June 20117.2 Applica
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SSEM/2011/4730 June 20117.2.3 Consi
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SSEM/2011/4730 June 20117.3.2 DSRL
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SSEM/2011/4730 June 2011contract mo
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SSEM/2011/4730 June 2011From 2008/0
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ID WBS Task Name Duration Start Fin
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SSEM/2011/4730 June 2011Hackney PD,
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SSEM/2011/4730 June 2011Appendix 12
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Harrington monitoring extent and as
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Whitehaven North/Harbour monitoring
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Nethertown monitoring extent for 20
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Drigg monitoring extent and associa
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Contents1. Introduction ...........
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Figure 1 - Swath bathymetry of Scro
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Figures 4 to 6 show the same data w
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3.2 Options for acquiring new bathy
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3.3 Interpretation of gross geomorp
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Head, shows a marked northerly sedi
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of artefacts affecting the original
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Executive Summary
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Table of contents1 Introduction ...
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sinks and transport pathways of rad
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m thick ‘bins’ s
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Page 203 and 204: Bed shear stress exceedance - Sella
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Page 213 and 214: Soulsby, R.L. and Whitehouse, R.J.S
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Page 223 and 224: About usCefas is a multi-disciplina
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Page 227 and 228: SummaryThe response of large volume
Page 229 and 230: Contents1. INTRODUCTION ...........
Page 231 and 232: Figure 3.15: 137 Cs activity concen
Page 233 and 234: 2. MODEL PARAMETERISATIONThe approa
Page 235: Figure 2.2: Stripped 137 Cs count r
Page 239 and 240: 1000 Bq kg -1SignificanceSignifican
Page 241 and 242: SignificanceSignificanceSignificanc
Page 243 and 244: 0 Bq kg -1SignificanceSignificanceS
Page 245 and 246: 40 Bq kg -13Significance21012.5 Bq
Page 249 and 250: 3.1.2.2 Detailed Small Area SurveyF
Page 253 and 254: 3.2 Patches of Enhanced 137 Cs acti
Page 255 and 256: 3020Stripped cps100-100 200 400 600
Page 261 and 262: 4. DISCUSSIONThe work reported here
Page 263 and 264: distribution. There appears to be n
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Page 267 and 268: Appendix A: Location and Activity D
Page 269 and 270: Position (BNG)Activity of recovered
Page 271 and 272: 11/09/2007 301521 503408 6 Sand 195
Page 273 and 274: 14/11/2007 301442 503457 4 Sand 255
Page 275 and 276: 10/01/2008 301694 503522 12 Sand 27
Page 277 and 278: 24/06/2008 301662 503500 4 Sand 263
Page 279 and 280: 27/10/2008 302058 503065 5 Sand 128
Page 281 and 282: 16/01/2009 301522 503320 7 Sand 367
Page 283 and 284: 22/09/2009 301787 503592 7 Pebbles
Page 285 and 286: 17/03/2010 301446 503542 2 Sand 26
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31/08/2010 300219 505597 0 Sand 33
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Position (BNG)Activity of recovered
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24/05/2010 299805 505799 3 Sand 30
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Position (BNG)Activity of recovered
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Activity of recoveredPosition (BNG)
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Page 2 of 3provides useful informat
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Week StartingSoftrak Beach Monitori
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Additional justification of 2011/12
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In the context of the total monitor
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