Radiological Habits Survey: HMNB Clyde (Faslane & Coulport) 2016 Public Report Radiological Habits Survey: HMNB Clyde (Faslane & Coulport) 2016 FF i ii Radiological Habits Survey: HMNB Clyde (Faslane & Coulport) 2016 Authors and Contributors: I. Dale, P. Smith, A. Tyler, A. Watterson, D. Copplestone, A. Varley, S. Bradley, L. Evans, P Bartie, M. Clarke, M. Blake, P. Hunter and R. Jepson External Reviewer: A. Elliott iii Environmental Radioactivity Laboratory & Occupational and Environmental Health Group Contents List of abbreviations and definitions .................................................................................................... viii Units ..................................................................................................................................................... viii Summary ................................................................................................................................................ ix 1. Introduction .................................................................................................................................... 1 1.1 Regulatory Context ................................................................................................................. 1 1.2 Definition of the Representative Person ................................................................................ 2 1.3 Dose Limits and Constraints .................................................................................................... 2 1.4 Habits Survey Aim ................................................................................................................... 3 2. The Survey ....................................................................................................................................... 5 2.1 Introduction ............................................................................................................................ 5 2.2 Site Activity ............................................................................................................................. 5 2.2.1 Current Activity ............................................................................................................... 5 2.2.2 Prospective Site Activity .................................................................................................. 6 2.3 Estimated Activity Concentrations from Licensed Discharges from HMNB Clyde and RNAD Coulport .............................................................................................................................................. 6 2.4 Survey Areas............................................................................................................................ 8 2.5 Land Cover Data ...................................................................................................................... 9 2.6 Soil Data .................................................................................................................................. 9 2.7 Topographic Wetness Index ................................................................................................. 14 2.8 Agricultural Production ......................................................................................................... 16 3. Methods ........................................................................................................................................ 18 3.1 Introduction .......................................................................................................................... 18 3.2 Postal Survey ......................................................................................................................... 18 3.3 Radiometric Surveys ............................................................................................................. 19 3.3.1 In Situ Dosimetry ........................................................................................................... 19 3.3.2 Beta Dosimetry.............................................................................................................. 19 3.3.3 Sampling ........................................................................................................................ 19 3.4 GPS Tracking .......................................................................................................................... 19 3.5 Conduct of the Survey ........................................................................................................... 20 3.6 Meetings and Informal Contacts ........................................................................................... 20 3.7 Data Conversion .................................................................................................................... 21 3.8 Data Rounding and Grouping ................................................................................................ 21 3.9 Qualitative and Quantitative Observations .......................................................................... 23 3.10 Dose Assessment Tool .......................................................................................................... 23 4. Postal Survey ................................................................................................................................. 26 iv 4.1 Introduction .......................................................................................................................... 26 5. Aquatic Radiation Pathways ......................................................................................................... 28 5.1 Introduction .......................................................................................................................... 28 5.2 Aquatic Survey Area Descriptions ......................................................................................... 28 5.3 Commercial seafood operations and controls ...................................................................... 28 5.4 Non-commercial fishing and angling .................................................................................... 29 5.5 Wildfowling ........................................................................................................................... 30 5.6 Sailing .................................................................................................................................... 30 5.7 Royal National Lifeboat Institute .......................................................................................... 31 5.8 Professional dog walkers ...................................................................................................... 31 5.9 Animals grazing ..................................................................................................................... 31 5.10 Seaweed and foraging ........................................................................................................... 32 5.11 Internal Exposure .................................................................................................................. 32 5.11.1 Adult Consumption Rates ............................................................................................. 32 5.11.2 Children and Infant Consumption Rates ....................................................................... 34 5.12 External Exposure ................................................................................................................. 36 6 Terrestrial Radiation Pathways ..................................................................................................... 40 6.1 Introduction .......................................................................................................................... 40 6.2 Terrestrial Survey Area Descriptions .................................................................................... 40 6.2.1 Rosneath Penninsula ..................................................................................................... 40 6.2.2 Glen Fruin ...................................................................................................................... 40 6.3 Private Food Production ....................................................................................................... 41 6.4 Commercial Food Production ............................................................................................... 42 6.5 Wild Foods ............................................................................................................................ 42 6.6 Production of Honey ............................................................................................................. 43 6.7 Other pathways ..................................................................................................................... 44 6.8 GPS Survey Results ................................................................................................................ 45 6.9 Internal Exposure .................................................................................................................. 45 6.9.1 Internal Exposure Adult Consumption Rate ................................................................. 45 6.9.2 Children and Infants’ Consumption Rates .................................................................... 48 7 Direct Radiation Exposure ............................................................................................................. 51 7.1 Introduction