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

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Commercial operator – a number of commercial operators exist that have thecapability to undertake a bespoke swath bathymetry survey of the area. Prices willvary depending on the scope of the project and the risks involved. For instance, thestanding charges (mobilisation/demobilisation) start to become less significant for asurvey that will take several weeks to complete. The main risk is the down time dueto poor weather conditions.Invest in Eagle – The Sellafield-owned and operated vessel “Eagle” is capable ofhaving a swath bathymetry system installed. An initial assessment shows that,amongst others, a WASSP swath system (~£40-£50k) (www.wassp.com) orGeoSwath Plus system (~£150k) (www.km.kongsberg.com/geoacoustics) would besuitable for undertaking these surveys. The crew would need to be trained in theoperation of the instruments and processing of the data, with Cefas providing qualitycontrol support. A major benefit of this approach is that the Eagle and crew arealready funded and the vessel can be mobilised quickly if a weather window isforecast, and the vessel is not required for other operations.In summary, three options are proposed in order to acquire the bathymetry information.Table 1 shows these options with potential advantages/disadvantages and costs. Whilstthese are initial estimates they can help inform the decision making process.Table 1 – Potential options for completion of Swath Survey.Option Proposal Rough Cost Advantages Disadvantages1 ExtendEnvironmentAgency surveyTBCVesselalreadyequippedNeed to ensure highquality of the survey toenable bed formcharacterisation.[The 2010 survey hasbeen completed]2 Commercialsurvey£30k-£50k 13 Update Eagle WASSP(~£50k)GeoSwathPlus*(~£150k)High levels ofQualitycontrol. Fast.Uses existingship.*IndustrystandardequipmentMay cost more thanaugmenting EA survey.Need to train personnel.Initial cost.1 Exact Figure to advised
3.3 Interpretation of gross geomorphological features (objective 2)Although bedform features cannot be identified from the 2009 swath bathymetry data, agross interpretation of the morphological changes can be attempted. After gridding the 2002and 2009 surveys in the Fledermaus package on a similar basis, the volumetric differencebetween the surfaces was calculated. This was then exported for visualisation in a GISpackage as shown in Figure 8. This revealed apparent differences in elevation, but there aresignificant uncertainties associated with interpretation due to differences in relative coverageof swath (‘complete’) vs. single beam (
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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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Page 125 and 126: SSEM/2011/4730 June 2011Appendix 12
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Page 137 and 138: Contents1. Introduction ...........
Page 139 and 140: Figure 1 - Swath bathymetry of Scro
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Page 157 and 158: Executive Summary
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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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