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

More documents

Recommendations

Info

SSEM/2011/4730 June 20114. Regulator and Stakeholder engagement.......................................................... 754.1 General Engagement with the Environment Agency..............................................754.2 Multi-Agency Workshop ............................................................................................764.3 COMARE .....................................................................................................................764.4 Sellafield Seabed Monitoring Working Group .........................................................764.5 Local stakeholders.....................................................................................................775. Health Risk Assessment.................................................................................... 785.1 Health Protection Agency assessment ....................................................................785.2 Uncertainty and recommendations for future work................................................795.3 Risks to workers.........................................................................................................805.3.1 Nuvia operations....................................................................................................805.3.2 Inhalation...............................................................................................................815.3.3 Ingestion................................................................................................................815.3.4 Skin contact and wounds.......................................................................................825.3.5 Reassurance by monitoring for internal uptake .....................................................825.3.6 Potential of exposure to the public ........................................................................825.4 Nuvia dosimetry investigation ..................................................................................826. Aims and Objectives .......................................................................................... 846.1 Introducing the requirement for large area beach monitoring...............................846.2 Beach monitoring programme review......................................................................846.3 Developing the approach for offshore monitoring..................................................856.4 Developing aims and objectives for the particles in the environment workprogramme........................................................................................................................866.5 Primary Questions and their Grouping ....................................................................887. Programme of work for 2011/12 ........................................................................ 957.1 2011/12 Beach Monitoring Programme ....................................................................957.2 Application of BAT for beach monitoring ..............................................................1047.2.1 Introduction..........................................................................................................1047.2.2 Beach monitoring detection equipment ...............................................................1047.2.3 Consistent approach for statistical interpretation.................................................1067.2.4 Monitoring speed.................................................................................................1067.2.5 Daily overlap of monitoring area..........................................................................1067.2.6 Strandline monitoring...........................................................................................1077.2.7 Alternative monitoring methods...........................................................................1077.3 Offshore Monitoring for 2011/12 .............................................................................1077.3.1 Continued dialogue with Dounreay Site Restoration Ltd.....................................1077.3.2 DSRL ROV Trial ..................................................................................................1087.3.3 EA Grab Sampling...............................................................................................1087.3.4 Developing the forward programme for offshore monitoring ...............................1097.4 Future Beach Monitoring Assessment Work Programme....................................1137.5 Summary of costs ....................................................................................................1138. Programme of Works ....................................................................................... 115Appendix 1 2010/11 Beach Monitoring Coverage MapsAppendix 2 Interpretation of swath bathymetry in the Eastern Irish Sea for SellafieldLtdAppendix 3 Currents at the Sellafield Ltd Pipeline: June 2010-February 2011Appendix 4 Modelling Gamma Spectrometry Systems for use in Beach Monitoringnear SellafieldAppendix 5 Information sent to EA in support of a 150 ha beach monitoringprogramme© Nuclear Decommissioning Authority 2011. 3
SSEM/2011/4730 June 2011List of TablesTable 2.1. Beach area specified in the CEAR and monitored each year .................................9Table 2.2. Limits of Detection (LoD) of given radioisotopes by Evolution 2 gamma-photondetection system- for finds on the surface and at 10 cm below the surface.............................9Table 2.3. Beach find rates 2006-2010 (particles and stones)...............................................11Table 2.4. Numbers of Particles and Stones recovered 2006-2010.......................................11Table 2.5. Numbers of alpha-rich, beta-rich and 60 Co rich Particles recovered 2006-2010 ...12Table 2.6. Analyses carried out on particles since 2006 by NPL ...........................................13Table 3.1. Total hectares monitored for each beach during the 2010/11 monitoringprogramme. ............................................................................................................................19Table 3.2. Total particle and stone beach finds during the 2010/11 monitoring programme. 19Table 3.3. Beach find rates (finds per hectare) throughout the history of the monitoringprogramme. ............................................................................................................................24Table 3.4. Changes in find classification since 2006..............................................................27Table 3.5. Find classification showing the types of beach finds recovered on beachessurrounding Sellafield.............................................................................................................28Table 3.6. Find numbers and activities by category and monitoring technique......................35Table 3.7. Alpha-rich sub-group numbers ..............................................................................40Table 3.8. Basic statistics for actinide activities based on log normally distributed data........47Table 3.9. Basic statistics data in 3.8 converted from the natural log values back to activities................................................................................................................................................48Table 3.10. Beta-rich Caesium Isotope Decay Factors..........................................................49Table 3.11. Beta-rich Find Estimates. ....................................................................................49Table 3.12. Basic statistics for 137 Cs activities based on log normally distributed data..........52Table 3.13. Basic statistics data in Table 3.12 converted from the natural log values back toactivities..................................................................................................................................52Table 3.14. f 1 factors derived by HPA in-vivo intestinal absorption study. .............................56Table 3.15. Overlap find numbers summary for Sellafield beach monitoring in 2010/11. ......58Table 3.16. Before Overlap Survey Analysis for Finds within Equipment LOD Range. .........58Table 3.17. Statistical techniques report recommendations...................................................59Table 3.18. Statistical sampling report recommendations......................................................62Table 7.1. Repeat areas for the 2011/12 beach monitoring programme................................96Table 7.2. Recommendations from BPM assessment. ........................................................105List of FiguresFigure 2.1. Location of the main beach areas in the vicinity of Sellafield.................................8Figure 3.1. NUVIA’s Beach monitoring Softrak vehicle ..........................................................18Figure 3.2. 2010/11 Monitoring extent from Drigg Point to St Bees .......................................20Figure 3.3. 2010/11 Monitoring extent from Whitehaven Harbour to Harrington....................21Figure 3.4. The distribution of particle and stone beach finds throughout the 2010/11monitoring programme. ..........................................................................................................22Figure 3.5. The distribution of particle and stone beach finds on Braystones and Sellafieldbeach throughout the 2010/11 monitoring programme. .........................................................25Figure 3.6. Changes in year on year find rate at beaches closest to Sellafield......................26Figure 3.7. Changes in find classification since 2006. ...........................................................27Figure 3.8. Geographic location of recovered alpha-rich and beta-rich throughout the 2010/11programme (excluding Whitehaven, Parton, Harrington and Allonby). ..................................29Figure 3.9. Location of recovered alpha-rich and beta-rich finds at Sellafield and Braystonesin 2010/11...............................................................................................................................30Figure 3.10. Location of recovered alpha-rich and beta-rich finds at St Bees in 2010/11......31© Nuclear Decommissioning Authority 2011. 4
Page 1 and 2: Particles in the EnvironmentAnnual
Page 3: SSEM/2011/4730 June 2011ContentsPur
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
Page 15 and 16: SSEM/2011/4730 June 2011as well as
Page 17 and 18: SSEM/2011/4730 June 2011The monitor
Page 19 and 20: SSEM/2011/4730 June 2011(Field Inst
Page 25 and 26: SSEM/2011/4730 June 2011number of f
Page 27 and 28: SSEM/2011/4730 June 20114.5004.000F
Page 29 and 30: SSEM/2011/4730 June 2011Table 3.5.
Page 33 and 34: SSEM/2011/4730 June 20113.1.5 Risks
Page 35 and 36: SSEM/2011/4730 June 2011presence of
Page 37 and 38: SSEM/2011/4730 June 2011Beta-rich A
Page 39 and 40: SSEM/2011/4730 June 2011Find Popula
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.
Page 51 and 52: 2.52.72.93.13.33.53.73.94.14.34.54.
Page 53 and 54: SSEM/2011/4730 June 2011In summary,
Page 55 and 56:
SSEM/2011/4730 June 2011particles h
Page 57 and 58:
SSEM/2011/4730 June 2011• Boron,
Page 59 and 60:
SSEM/2011/4730 June 2011Table 3.15.
Page 61 and 62:
SSEM/2011/4730 June 2011Recommendat
Page 63 and 64:
SSEM/2011/4730 June 2011Recommendat
Page 65 and 66:
SSEM/2011/4730 June 2011homogeneous
Page 67 and 68:
SSEM/2011/4730 June 2011[the Sellaf
Page 69 and 70:
SSEM/2011/4730 June 2011Figure 3.33
Page 71 and 72:
SSEM/2011/4730 June 2011 © Nuclea
Page 73 and 74:
SSEM/2011/4730 June 2011 © Nucle
Page 75 and 76:
SSEM/2011/4730 June 2011The finding
Page 77 and 78:
SSEM/2011/4730 June 2011Communicati
Page 79 and 80:
SSEM/2011/4730 June 20115. Health R
Page 81 and 82:
SSEM/2011/4730 June 2011The numbers
Page 83 and 84:
SSEM/2011/4730 June 2011wear gloves
Page 85 and 86:
SSEM/2011/4730 June 20116. Aims and
Page 87 and 88:
SSEM/2011/4730 June 2011specificati
Page 89 and 90:
SSEM/2011/4730 June 20116.5 Primary
Page 91 and 92:
SSEM/2011/4730 June 20113. Where ar
Page 93 and 94:
SSEM/2011/4730 June 20115. What is
Page 95 and 96:
SSEM/2011/4730 June 2011Fundamental
Page 97 and 98:
SSEM/2011/4730 June 2011size and wi
Page 99 and 100:
SSEM/2011/4730 June 201130 May Drig
Page 101 and 102:
SSEM/2011/4730 June 2011Figure 7.2.
Page 103 and 104:
Page 105 and 106:
SSEM/2011/4730 June 20117.2 Applica
Page 107 and 108:
SSEM/2011/4730 June 20117.2.3 Consi
Page 109 and 110:
SSEM/2011/4730 June 20117.3.2 DSRL
Page 111 and 112:
SSEM/2011/4730 June 2011contract mo
Page 113 and 114:
Page 115 and 116:
SSEM/2011/4730 June 2011From 2008/0
Page 117 and 118:
ID WBS Task Name Duration Start Fin
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
SSEM/2011/4730 June 2011Hackney PD,
Page 125 and 126:
SSEM/2011/4730 June 2011Appendix 12
Page 127 and 128:
Harrington monitoring extent and as
Page 129 and 130:
Whitehaven North/Harbour monitoring
Page 131 and 132:
Nethertown monitoring extent for 20
Page 133 and 134:
Drigg monitoring extent and associa
Page 135 and 136:
This page is intentionally blank
Page 137 and 138:
Contents1. Introduction ...........
Page 139 and 140:
Figure 1 - Swath bathymetry of Scro
Page 141 and 142:
Figures 4 to 6 show the same data w
Page 143 and 144:
3.2 Options for acquiring new bathy
Page 145 and 146:
3.3 Interpretation of gross geomorp
Page 147 and 148:
Head, shows a marked northerly sedi
Page 149 and 150:
of artefacts affecting the original
Page 151 and 152:
Page 154:
-
Page 157 and 158:
Executive Summary
Page 159 and 160:
Table of contents1 Introduction ...
Page 161 and 162:
-
Page 163 and 164:
sinks and transport pathways of rad
Page 165 and 166:
-
Page 167 and 168:
m thick ‘bins’ s
Page 169 and 170:
-
Page 171 and 172:
-
Page 173 and 174:
-
Page 175 and 176:
-
Page 177 and 178:
‘direction to’, and the convent
Page 179 and 180:
-
Page 181 and 182:
-
Page 183 and 184:
-
Page 185 and 186:
-
Page 187 and 188:
-
Page 189 and 190:
-
Page 191 and 192:
-
Page 193 and 194:
-
Page 195 and 196:
- - --
Page 197 and 198:
-
Page 199 and 200:
-
Page 201 and 202:
-
Page 203 and 204:
Bed shear stress exceedance - Sella
Page 205 and 206:
-
Page 207 and 208:
-
Page 209 and 210:
-
Page 211 and 212:
- -
Page 213 and 214:
Soulsby, R.L. and Whitehouse, R.J.S
Page 215 and 216:
-
Page 217 and 218:
-
Page 219 and 220:
-
Page 221 and 222:
-
Page 223 and 224:
About usCefas is a multi-disciplina
Page 225 and 226:
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 and 236:
Figure 2.2: Stripped 137 Cs count r
Page 237 and 238:
200150Number of finds1005000 5 10 1
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 247 and 248:
Page 249 and 250:
3.1.2.2 Detailed Small Area SurveyF
Page 251 and 252:
Page 253 and 254:
3.2 Patches of Enhanced 137 Cs acti
Page 255 and 256:
3020Stripped cps100-100 200 400 600
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
4. DISCUSSIONThe work reported here
Page 263 and 264:
distribution. There appears to be n
Page 265 and 266:
clearance reduce detection limits,
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
Page 287 and 288:
31/08/2010 300219 505597 0 Sand 33
Page 289 and 290:
Page 291 and 292:
24/05/2010 299805 505799 3 Sand 30
Page 293 and 294:
Page 295 and 296:
Activity of recoveredPosition (BNG)
Page 297 and 298:
Page 299 and 300:
Page 2 of 3provides useful informat
Page 301 and 302:
Week StartingSoftrak Beach Monitori
Page 303 and 304:
Additional justification of 2011/12
Page 305 and 306:
In the context of the total monitor
show all

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

Create successful ePaper yourself

Delete template?

Save as template?