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Characterisation and waste management solutions to support land remediation
Dr Helen Beddow NIA Decommissioning and Existing Generation Group Developments in decommissioning Energus
CONTENT
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management solutions to support land remediation Dr Helen Beddow - - PowerPoint PPT Presentation
management solutions to support land remediation Dr Helen Beddow - - PowerPoint PPT Presentation
Characterisation and waste management solutions to support land remediation Dr Helen Beddow NIA Decommissioning and Existing Generation Group Developments in decommissioning Energus CONTENT 1 2 3 INTRODUCTION: RADIOLOGICAL IN-SITU DATA
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➢ Expensive process ➢ Understand as far as possible what needs to be done and how you are going to get there ➢ Understand the end point, e.g. declassification, delicensing, residential use, commercial use ➢How will you know when you have reached the end point? ➢How are you going to manage the waste? ➢Rapid characterisation
➢Laboratory analysis is costly and time consuming
➢ In-situ characterisation
➢Real-time data to aid in-field decision making
➢Segregation at the point of generation to minimise waste ➢Waste hierarchy - what is best for the environment
➢Recycle, reuse, recover, dispose
➢Disposal of waste / transport of materials off-site
➢Information management
RADIOLOGICAL LAND REMEDIATION PROJECTS
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Groundhog TM
SURFACE RADIATION MAPPING
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➢ Sodium iodide detector ➢ Advanced radiation spectrometer ➢ GPS receiver ➢ Spectrum recorded every second ➢ High density of measurements ➢ GIS - radiation contour maps ➢ Summation of spectra
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Window sampler drilling
DEPTH PROFILING
GroundhogTM
Gamma signal superimposed of stratigraphy
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Gamma Excavation Monitor (GEM)
SEGREGATION AT SOURCE
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➢ Rapid screening technology for excavator buckets ➢ Shielded sodium iodide detector
➢Spectral or gross gamma
➢ Metal bucket detected by optical sensors ➢ Dose-rate meter to indicate high activity ➢ Operated remotely using an Android tablet ➢ Calibrated using MCNP ➢ Coloured light indicates the waste category ➢ Typically a 10 second count time
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High Resolution Assay Monitor
HIGH RESOLUTION GAMMA SPECTROMETRY
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➢ High Resolution Gamma Spectrometry ➢ Housed in a cabin on a trailer with turntable ➢ Programmed to model the waste package ➢ Produces a unique calibration ➢ Provides real-time data including:
➢Fingerprint application ➢Transport calculations ➢Waste acceptance criteria calculations ➢Waste category ➢Nuclear material calculations
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Waste Management problems
➢ Where is the waste package? ➢ What is in the waste package? ➢ Where is the waste to go? ➢ What vehicle is the package to be loaded onto? ➢ What skip is the package in? ➢ What paperwork goes with the package? ➢ Does the package meet the waste acceptance criteria ➢ Is the information correct?
Waste Management Solution
➢ Barcode labels ➢ Database and software ➢ Barcode reader tablets ➢ Tracking solution ➢ Assay data automatically loaded into database ➢ Documentation automatically produced ➢ No transcription errors ➢ QA system
INFORMATION MANAGEMENT SYSTEM
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555 bags consigned off-site per day
WASTE MANAGEMENT SOLUTION
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Thank you Merci
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