NPP D&D, Canberra experience and capabilities

Transcription

1 NPP D&D, Canberra experience and capabilities Fabrice Consalvo Director D&D Business Development Tokyo, Thursday September 3rd, 2015 p1

2 Canberra s offering Canberra s core business has always been the supply of reliable high-end nuclear measurement equipment supported by a high level of service The nuclear market is transitioning very fast toward a market where reactors D&D is playing a significant role Based on its long experience (D&D of Fuel Cycle facilities, supplier of products and services for the D&D of reactors in the USA, UK, Germany, France) Canberra has developed a unique approach of the reactors D&D activities with one single priority: Turn nuclear measurement into a D&D performance improvement tool The efficient implementation of Canberra s nuclear measurement portfolio of solutions is a key lever for efficiently mastering D&D projects from a technical as well as financial standpoints p2

3 Areva - Canberra comprehensive offer for all stages of a D&D / Waste Management project PRE SHUTDOWN - Assessment of costs - Radiation inspection of the facility - Modeling of scenarios SHUTDOWN OF FACILITY Evaluation of contaminated areas Mapping of large areas and walls BUILDING DEMOLITION Rough sorting of rubble and debris Sorting and characterization of liquid and solid wastes PACKAGING TRANSPORT & STORAGE Verification of wastes before transport & storage FINAL VERIFI- CATION Final status measurement before returning the site to public Workers and Environment protection - Comprehensive range of on-site environmental monitoring and laboratory sample measurements - Radiation protection of workforce (ALARA) and sample characterization p3

4 A few examples of Canberra s solutions Upfront involvement in Project planning Site and plant characterization Surface and depth profiling of contamination Application to walls and floors 3D mapping of soil contamination Underwater measurements System, Structure and Components characterization Operations support Improving waste assay accuracy Mobile Characterization Services Large box / Truck counters Environment and workers protection p4

5 A few examples of Canberra s solutions Upfront involvement in Project planning Site and plant characterization Surface and depth profiling of contamination Application to walls and floors 3D mapping of soil contamination Underwater measurements System, Structure and Components characterization Operations support Improving waste assay accuracy Mobile Characterization Services Large box / Truck counters Environment and workers protection p5

6 Upfront involvement in Project Planning Consultancy services The added-value brought by Canberra for D&D projects is maximum when our experts are involved upfront Provide experts embedded in customers teams so D&D groups can design processes / plant with measurement systems / services in mind Access to a network of experts in all NM domains Perform technical Studies to assist in development of waste management / decommissioning strategies Advise on data analysis and the impact this analysis can have on procedures, assay methods, waste categorization, safety program Develop sampling plans, calibration procedures, processes, operating methods Perform feasibility studies e.g. for optioneering assay techniques Advise on NDA system upgrade Help customers prepare documentation for regulators Support customers through interaction with their client p6

7 A few examples of Canberra s solutions Upfront involvement in Project planning Site and plant characterization Surface and depth profiling of contamination Application to walls and floors 3D mapping of soil contamination Underwater measurements System, Structure and Components characterization Operations support Improving waste assay accuracy Mobile Characterization Services Large box / Truck counters Environment and workers protection p7

8 Site and plant Characterization Surface and Depth profiling of contamination Support in selecting the right method and tool to minimize work time and waste volumes + supply of solution Surface mapping Handheld equipment for dose rate measurement Gamma imaging Spectroscopic measurements Defining criteria of choice (radionuclides, accessibility, area size, activity ) Depth profiling Invasive solutions Non -invasive solutions On core samples ISOCS measurement of depth tagged samples with TruPro vacuum drilling Detectors inserted inside drilled holes ISOCS measurements In-situ measurement using spectral shape information p8

9 Site and plant Characterization Surface and Depth profiling of contamination Application to concrete walls and floors Outside Wall in-situ measurement, using spectrum shape data External measurements at various locations Can use simpler nuclide(s) or with single energy line nuclides; Method utilizes increased compton down-scatter for activity at deeper locations Calibration based on peak-to-compton ratio as a function of depth. Specific algorithms implemented p9

10 Site and plant Characterization Surface and Depth profiling of contamination Application to 3D mapping of contaminated soils Surface mapping of the activity of the area (handheld equipment, detectors on a carrier ) Geostatistical treatment * Determination of the number and position of the drillings. The size of the mesh is also a conditioned by the precision required by the customer Thin-wall hollow tubes are pushed in the soil. A collimated LaBr or a sealed HPGe probe is inserted in these empty tubes. 3D mapping performed by a software of geostatistic data treatment *Specific algorithms have been developed by the companies specialized in geostatistics with whom we are working, and successfully implemented on real projects p10

11 Site and plant Characterization Underwater measurements Underwater concrete characterization Our in-situ measurement method using spectrum shape data has been adapted for underwater measurements. Available on an ROV for automatic measurements in ponds Waste, fuel debris characterization in ponds o ISOCS measurements: Example of application for separating fuel debris in spent fuel pool from activation and contaminated debris o SMOPY: Coupling of a neutron measurement with a γ spectrometry at ambient temperature (CZT) Spectroscopic measurements in ponds, seas and rivers SMOPY For application not needing high energy resolution HPGe. Low and Medium energy resolutions p11

12 Site and plant Characterization Systems, Structures and components characterization (1/2) Canberra acquired a unique worldwide experience in systems, structures and components characterization: In-situ gamma spectroscopic nuclide identification and activity measurements with different types of probes, modeling We bring constant improvement to our in-situ spectroscopic equipment, We develop measurement methods and write corresponding procedures (Standard procedures exist that meet national standards, site-specific or NQA-1 compliant in US) Calibrations developed and validated for previous campaigns (more than 100,000 items assayed) We perform the on-site measurements or we train the teams that can do the measurements following our procedures Our experts analyze the measurement results, We perform on-site measurements with evolutions of the ISOCS equipment that are not yet available on the market p12

13 Site and plant Characterization Systems, Structures and components characterization (2/2) A few examples Ventilation ducts measurements in Marcoule (CEA France) Free release of heat exchangers at Seabrook NPP (USA) Measurement service at SG replacement outage at Tihange3 NPP (Belgium) p13

14 A few examples of Canberra s solutions Upfront involvement in Project planning Site and plant characterization Surface and depth profiling of contamination Application to walls and floors 3D mapping of soil contamination Underwater measurements System, Structure and Components characterization Operations support Improving waste assay accuracy Mobile Characterization Services Large box / Truck counters Environment and workers protection p14

15 Accuracy improvement Operations Support Improving waste assay accuracy (1/2) Accuracy improvement for container measurements where risk of hotspot(s) Improved waste segregation e.g. TRU (PCM) / LLW Detection of hotspots in bulk waste (builders bags / big boxes) Improved uncertainty evaluation if unknown internal fill-height (when RTR image not available) Benefits Improve efficiency of segregation of waste Reduce proportion of waste pessimistically sentenced to higher category Optimize storage of containers in facilities Reduce waste storage costs Reduce waste disposal costs p15

16 Operations Support Improving waste assay accuracy (1/2) Challenge: Many of the characteristics of items encountered in the field are defined with a certain level of certainty (Matrix composition, density and fill height, weight fraction of U in matrix, container dimensions ) These variables can lead to very high uncertainties and conservative approaches ISOCS Uncertainty Estimator (IUE) software tool already allows to reduce measurement uncertainties Advanced ISOCS Uncertainty Estimator (A-IUE) takes it one step further. Robust analysis with improved accuracy based on all measurement data available Automated determination of efficiency calibration most consistent with gamma ray spectrum or spectra measured in the field. A-IUE developed by Canberra in close collaboration with the IAEA A comparative measurement campaign for TRU / LLW segregation in soft waste packages showed that not using A-IUE (calibration with worst case) can lead to an over-estimation by almost a factor 2. p16

17 Operations Support Mobile Characterization Services The need Permanent safe storage of transuranic waste Clean-up of contaminated sites (Los Alamos, Hanford, Oak Ridge National labs) The Customer The primary customer is Washington Tru Solutions, operator of the DoE s WIPP (Waste Isolation Pilot Project), in New Mexico The solution: Mobile Characterization Services (MCS) Partnership A special purpose company formed by Canberra and local partners Defining and Implementing Operating procedures in line with DoE and EPA requirements Providing all required measurement and lab equipment to characterize, sort and document waste Managing and Operating the program based on a performance contract Processing over drums in 10 years p17

18 Operations Support Large box / Truck counters Free release measurement for large volumes of waste: Yankee Rowe Truck counting system Truck screening station equipped with 6 Ge detectors (3/side) Calibrated truckload using ISOCS 93 million pounds of soils and rubble Over 2500 truck loads assayed Up to 30 trucks / 10 hour shift Waste sorting through measurement of sub-volumes activity: Truck monitor Fukushima Prefecture Need system to sort incoming waste at ISF Thresholds: 3000, 8000, 100,000 Bq/kg 30 seconds per truck Individual bag activities 8 shielded 3x3 NaI detectors, LED stabilized Automatic ISOCS calibrations for each sack (variable fill height) Maximum Entropy algorithm to give maximum activity in each sack consistent with measurements p18

19 A few examples of Canberra s solutions Upfront involvement in Project planning Site and plant characterization Surface and depth profiling of contamination Application to walls and floors 3D mapping of soil contamination Underwater measurements System, Structure and Components characterization Operations support Improving waste assay accuracy Mobile Characterization Services Large box / Truck counters Environment and workers protection p19

20 Environment and Workers Protection (1/2) Environmental Radiation Monitoring Systems Flexible easy to deploy wired (or wireless) network of environmental monitoring equipment with central supervision and control AM ip100si Ion chamber Ecospec Ecogamma icam α/ß Monitor G64 Gamma Monitor p20

21 Environment and Workers Protection (2/2) Personnel Monitoring Products Entry or Exit from areas where nuclear materials are used Passive Monitoring & Evaluation Daily Entry Screening RCA Exit: Argos, Cronos, GEM-5 Sirius Plant Exit/Entrance-GEM-5 Exit WBC-Fast Scan/AccuScan Exit Passive Monitoring-GEM-5-Argos w/zeus Specific movable solutions can be developed to relocate the equipment as site remediation progresses p21

22 Conclusion For each type of activity occurring in the course of a D&D project, a thorough analysis of how measurement solutions can bring the highest added-value to the D&D contractor has been performed by Canberra, leading to Propose proven solutions with an optimized efficiency Bring innovative efficient integrated solutions Solutions = Products / Services / Expertise, consulting D&D doesn t systematically require neither the most high-end solution nor the cheapest but the most adapted to the challenge imposed by the field. That s why our approach is to Support our customer with our team of experts that helps take the best possible decision and implement it (methods, procedures ) Propose a unique extensive portfolio of measurement solutions, standard or custom Implement these solutions in the field (fieldwork measurements, analysis of results ) with one single objective: Turn nuclear measurement into a D&D performance improvement tool p22