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

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SSEM/2011/4730 June 2011Particles in the Environment Annual Report 2010/11Purpose of this reportThis report details the progress that has been made during the 2010/11 financial year on theunderstanding of the nature and potential health risk posed by radioactive particles in theEnvironment. It sets out the aims and objectives for the project and provides the programmeof future work that Sellafield Ltd believes will meet these objectives.© Nuclear Decommissioning Authority 2011. 1
SSEM/2011/4730 June 2011ContentsPurpose of this report .............................................................................................. 1Contents.................................................................................................................... 2List of Tables ............................................................................................................ 4List of Figures........................................................................................................... 41. Introduction........................................................................................................... 62. Background........................................................................................................... 72.1 Origin of the large area beach monitoring programme ............................................72.2 Beach monitoring methods.........................................................................................92.3 Beach monitoring findings to date ...........................................................................102.3.1 Locations ...............................................................................................................102.3.2 Find rates...............................................................................................................102.3.3 Find sizes ..............................................................................................................112.3.4 Find classification ..................................................................................................122.3.4.1 Alpha and Beta-rich ........................................................................................122.3.4.2 Alpha-rich .......................................................................................................122.3.4.3 Beta-rich .........................................................................................................122.3.4.3 60 Co rich..........................................................................................................122.3.5 Analysis of finds.....................................................................................................132.4 Sources and Pathways of beach finds.....................................................................132.5 Offshore monitoring...................................................................................................152.6 Risk Assessment........................................................................................................153. Progress during 2010/11.................................................................................... 173.1 Beach Monitoring 2010/11 ........................................................................................173.1.1 Introduction............................................................................................................173.1.2 Beach monitoring programme specification for 2010/11 .......................................173.1.3. Achievement of the 2010/11 beach monitoring programme.................................173.1.3.1 Detection capability of radionuclide populations...........................................173.1.3.2 Area coverage ................................................................................................183.1.4 Beach Finds..........................................................................................................193.1.4.1 Particles and Stones.......................................................................................193.1.4.2 Geographic distribution of finds ......................................................................233.1.4.3 Find rates per hectare ....................................................................................233.1.4.4. Find Classification .........................................................................................263.1.5 Risks from particles found in the environment.......................................................323.1.6 Conclusions...........................................................................................................323.2 Find Analysis and Statistics......................................................................................333.2.1 Introduction............................................................................................................333.2.2 What has been achieved with this analytical data? ...............................................343.2.2.1 Key Findings from Sellafield Ltd Analyses .....................................................343.2.2.2 Key Findings from External Analyses Contracts ............................................533.2.2.3 Key Findings from GIS Analysis .....................................................................563.2.2.4 Key Findings from Statistical Techniques Analyses .......................................593.2.3 Analysis Conclusions............................................................................................633.3 Offshore Monitoring...................................................................................................643.3.1 Hydrodynamic Modelling Contract.........................................................................643.3.2 Progress on analysis and interpretation of existing swath bathymetry data..........653.3.3 Progress on measurements of bed shear stress in the vicinity of the Sellafielddischarge pipeline...........................................................................................................673.3.4 Progress on the literature review of airborne transport of particles in the Cumbrianbeach environment.........................................................................................................713.4 Monitoring R&D: Evaluation of Airborne Gamma Spectrometry...........................73© Nuclear Decommissioning Authority 2011. 2
Page 1: Particles in the EnvironmentAnnual
Page 5 and 6: SSEM/2011/4730 June 2011List of Tab
Page 7 and 8: SSEM/2011/4730 June 20111. Introduc
Page 9 and 10: SSEM/2011/4730 June 2011Figure 2.1.
Page 11 and 12: SSEM/2011/4730 June 2011In August 2
Page 13 and 14: SSEM/2011/4730 June 20112.3.4 Find
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Page 17 and 18: SSEM/2011/4730 June 2011The monitor
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Page 25 and 26: SSEM/2011/4730 June 2011number of f
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Page 29 and 30: SSEM/2011/4730 June 2011Table 3.5.
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Page 35 and 36: SSEM/2011/4730 June 2011presence of
Page 37 and 38: SSEM/2011/4730 June 2011Beta-rich A
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Page 41 and 42: SSEM/2011/4730 June 2011Log Am241 A
Page 43 and 44: SSEM/2011/4730 June 2011Beach Find
Page 45 and 46: SSEM/2011/4730 June 2011Log Pu239 A
Page 47 and 48: SSEM/2011/4730 June 2011Figure 3.22
Page 49 and 50: SSEM/2011/4730 June 2011Table 3.9.
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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 2011Figure 7.2.
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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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‘direction to’, and the convent
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Bed shear stress exceedance - Sella
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Soulsby, R.L. and Whitehouse, R.J.S
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About usCefas is a multi-disciplina
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SummaryThe response of large volume
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Contents1. INTRODUCTION ...........
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Figure 3.15: 137 Cs activity concen
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2. MODEL PARAMETERISATIONThe approa
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Figure 2.2: Stripped 137 Cs count r
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200150Number of finds1005000 5 10 1
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1000 Bq kg -1SignificanceSignifican
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SignificanceSignificanceSignificanc
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0 Bq kg -1SignificanceSignificanceS
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40 Bq kg -13Significance21012.5 Bq
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3.1.2.2 Detailed Small Area SurveyF
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3.2 Patches of Enhanced 137 Cs acti
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3020Stripped cps100-100 200 400 600
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4. DISCUSSIONThe work reported here
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distribution. There appears to be n
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clearance reduce detection limits,
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Appendix A: Location and Activity D
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Position (BNG)Activity of recovered
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11/09/2007 301521 503408 6 Sand 195
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14/11/2007 301442 503457 4 Sand 255
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10/01/2008 301694 503522 12 Sand 27
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24/06/2008 301662 503500 4 Sand 263
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27/10/2008 302058 503065 5 Sand 128
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16/01/2009 301522 503320 7 Sand 367
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22/09/2009 301787 503592 7 Pebbles
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17/03/2010 301446 503542 2 Sand 26
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31/08/2010 300219 505597 0 Sand 33
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24/05/2010 299805 505799 3 Sand 30
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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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Annual Report for 2010/11 and Forward Programme - Sellafield Ltd

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