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 MANAGEMENT CONSIDERATIONS IN CHARACTERISATION CASE STUDY TERMS OF WASTE TECHNOLOGIES MANAGEMENT Nuvia presentation 2

1 RADIOLOGICAL LAND REMEDIATION PROJECTS ➢ Expensive process ➢ Rapid characterisation ➢ Laboratory analysis is costly and time consuming ➢ Understand as far as possible what needs to be done and how you are going to get ➢ In-situ characterisation there ➢ Real-time data to aid in-field decision making ➢ Understand the end point, e.g. ➢ Segregation at the point of generation to minimise declassification, delicensing, residential use, waste commercial use ➢ Waste hierarchy - what is best for the environment ➢ How will you know when you have reached ➢ Recycle, reuse, recover, dispose the end point? ➢ Disposal of waste / transport of materials off-site ➢ How are you going to manage the waste? ➢ Information management Nuvia presentation 3

2 SURFACE RADIATION MAPPING Groundhog TM ➢ Sodium iodide detector ➢ Advanced radiation spectrometer ➢ GPS receiver ➢ Spectrum recorded every second ➢ High density of measurements ➢ GIS - radiation contour maps ➢ Summation of spectra Nuvia presentation 4

2 DEPTH PROFILING Groundhog TM Window sampler drilling Gamma signal superimposed of stratigraphy Nuvia presentation 5

2 SEGREGATION AT SOURCE Gamma Excavation Monitor (GEM) ➢ 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 Nuvia presentation 6

2 HIGH RESOLUTION GAMMA SPECTROMETRY High Resolution Assay Monitor ➢ 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 Nuvia presentation 7

3 INFORMATION MANAGEMENT SYSTEM Waste Management problems Waste Management Solution ➢ Where is the waste package? ➢ Barcode labels ➢ What is in the waste package? ➢ Database and software ➢ Where is the waste to go? ➢ Barcode reader tablets ➢ What vehicle is the package to be loaded onto? ➢ Tracking solution ➢ What skip is the package in? ➢ Assay data automatically loaded into database ➢ What paperwork goes with the package? ➢ Documentation automatically produced ➢ Does the package meet the waste acceptance ➢ No transcription errors criteria ➢ QA system ➢ Is the information correct? Nuvia presentation 8

3 WASTE MANAGEMENT SOLUTION 555 bags consigned off-site per day Nuvia presentation 9

Thank you Merci Nuvia presentation 10