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Gamma Waste Systems

Products in this category

CANBERRA offers various Gamma measurement systems to measure containers ranging from non-packaged waste to vehicles. These systems can be provided in a variety of configurations from standalone manually-loaded systems to fully-automated systems that provide greater throughput and minimize personnel exposure.

WM2110 Series Q2 Low Level Waste Assay Systems

WM2110 Series Q2 Low Level Waste Assay Systems

Description

Most nuclear facilities treat all materials as radioactive waste, simply because they have been in an area where they might have become contaminated. Likewise, expensive components are sometimes discarded as contaminated because they have inaccessible surfaces which cannot be tested for contamination. These are very expensive practices which can be avoided through judicious use of a sensitive Qualitative and Quantitative (Q2) Low Level Waste Assay system to insure the most cost-effective handling of your waste. By optimizing waste disposal with a WM2110 Series Q2 assay system, a typical nuclear power plant can expect a payback period of less than one year through reduced radioactive waste disposal costs.

Alternative systems based upon gross counting methods do not allow specific release limits for individual isotopes, plus they allow the natural radioactivity of radium, thorium, 40K, or background fluctuations to contribute to measured levels. The result is overstated activity levels and unnecessary added disposal costs, which quickly offset any initial costs savings that may have been realized when the system was purchased.

The high resolution and wide dynamic range of its germanium detectors make the Model WM2110 the system of choice for waste material containing totally unknown and/or complex mixtures, particularly when the samples contain both low energy and high energy nuclides.

Series Q2 Low Level Waste Assay Systems WM2110

Features

  • Provides qualitative and quantitative gamma assays for waste in 208 L (55 gal) drums.
  • Sensitivity better than 370 Bq (10 nCi) for 208 liter (55 gal) drums.
  • Factory calibrated for turnkey operation, and includes QA check source and holder.
  • Low background 10 cm (4 in.) steel shield.
  • Automatic weighing system for matrix attenuation corrections due to sample density.
  • PC-based control and analysis system featuring the user-friendly CANBERRA NDA-2000 Waste Assay Software package.
  • Standardized modular design for easy customization:
    • Shield pre-drilled for field installation of all available options.
    • Optional upgrade to 15 cm (6 in.) steel shield.
    • Optional manual or automatic LN2 fill systems for Ge detectors.
    • Optional electrically-assisted drum loader.
    • Optional environmentally-controlled equipment cabinet with heating and air conditioning units.
WM2200 Series Segmented Assay System

WM2200 Series Segmented Assay System

Description

CANBERRA’s WM2200 Segmented Assay System is designed to perform accurate quantitative assays on gamma emitting nuclides found in fission product, activation product, and Transuranic (TRU) waste. With the optional ASTM algorithms it is also designed for use in safeguards applications. The system provides very accurate assays through the use of a collimated high purity germanium detector. The container is divided into a number of vertical segments and the activity is quantified in each vertical segment using matrix correction techniques which calculate the average matrix density for each segment.

The standard system configuration is designed to assay 200 liter (55-gallon) drums and support weights up to 900 kg (2000 lb). Optional configurations have been provided for larger or heavier containers from 320 L (85 gal) drums to HICs.

The standard system is designed to assay radionuclides such as 60Co or 137Cs with drum activities ranging from approximately 100 nCi up to approximately 20 mCi. For transuranic waste the system is optimized for assaying drums containing 0.1 gram up to 1000 grams of 235U or 239Pu. Detector size and collimation can be used to modify the dynamic range of the system.

WM2200 Series Segmented Assay System

Features

  • Complete quantitative gamma analysis for fission products or TRU (alpha) radionuclides
  • Modular design permits system to be optimized for customer’s measurement application
  • Large coaxial or Broad Energy Detector for optimal performance
  • Non-Destructive Assay Software (NDA-2000) provides extensive setup analysis, calibration, and QA capabilities
  • MGA/MGAU U-Pu isotopics software
  • Fully compatible with ISOCS methodology and calibrations
  • PLC-based electromechanical control system
  • Many optional capabilities available including:
    • Automatic weighing system.
    • Surface dose rate measurement.
    • Inline Automated Conveyor System.
WM2211 Automated Waste Assay System

WM2211 Automated Waste Assay System

 WM2211 Automated Waste Assay System

Description

CANBERRA's WM2211 Segmented Assay System is designed to perform accurate quantitative assays on gamma emitting nuclides found in fission product, activation product, and Transuranic (TRU) waste. With the optional ASTM algorithms it is also designed for use in safeguards applications. The system provides very accurate assays through the use of a collimated high purity germanium detector. The container is divided into a number of vertical segments and the activity is quantified in each vertical segment using matrix correction techniques which calculate the average matrix density for each segment. The system is designed to assay drums with volumes up to 320 L (85 gal) and weights up to 900 kg (2000 lb) in its standard configuration. Optional configurations have been provided for larger or heavier containers.

The standard system is designed to assay radionuclides such as 60Co or 137Cs with drum activities ranging from approximately 100 nCi up to approximately 20 mCi. For transuranic waste the system is optimized for assaying drums containing 0.1 gram up to 1000 grams of 235U or 239Pu. Detector size and collimation can be used to modify the dynamic range of the system.

Features

  • Complete quantitative gamma analysis for fission products or TRU (alpha) radionuclides.
  • Modular design permits system to be optimized for customer's measurement application.
  • Non-Destructive Assay Software (NDA-2000) provides extensive setup analysis, calibration, and QA capabilities
  • PLC based electromechanical control system.
  • Conveyor rotator module for interface to automated conveyor line
  • Automated batch processing software
  • Complete conveyor lines available
  • Optional bar code reader
  • Optional dosimeter(s)
  • Many optional capabilities available including:
    • Automatic weighing system
    • Surface dose rate measurement
    • Inline Automated Conveyor System
WM2900 TGS Tomographic Gamma Scanner

WM2900 TGS Tomographic Gamma Scanner

Description

The WM2900 TGS is CANBERRA’s Tomographic Gamma-ray scanning system for Safeguards and Waste Assay applications. The system is designed to accurately quantify plutonium, uranium, fission and activation products in a variety of containers from 20 L pails to 200 L drums in overpacks.

The TGS uses high purity germanium detection and low spatial resolution transmission and emission imaging to obtain improved measurement accuracy over non-imaging gamma-ray techniques. The container is analyzed in a three-dimensional grid of discrete volume elements called voxels. The activity is quantified in each of these voxels using matrix correction techniques based on the activity content and matrix properties of each voxel.

Data is acquired by scanning hardware with high resolution HPGe detector electronics. Matrix mapping is performed by applying Beers Law to rays from the center of each voxel to the center of the detector face. Special image reconstruction software is used to allow for the response of the collimator in combination with the properties of the waste. A comprehensive graphics package allows the attenuation map and emission image to be visualized from different perspectives.

The system is designed to assay drums with volumes up to 340 L and weights up to 1000 kg (2200 lb) in its standard configuration. Optional configurations can be provided for larger or heavier containers. A detector horizontal drive option is also available to allow assay of smaller containers (e.g. 20 L pails).

The standard system is designed to assay radio-nuclides such as 60Co or 137Cs with drum activities ranging from approximately 500 nCi up to approximately 100 mCi. For transuranic waste the system is optimized for assaying drums containing 0.4 g up to 1000 g of 235U or 239Pu. Detector size and collimation can be used to modify the dynamic range of the system.

WM2900 TGS Tomographic Gamma Scanner

Features

  • Complete quantitative gamma analysis for fission/activation products or TRU (alpha) radionuclides
  • Modular design permits system to be optimized for customer’s measurement application
  • Large coaxial or Broad Energy Detector for optimal performance
  • Non-Destructive Assay Software (NDA 2000) provides extensive setup analysis, calibration, and QA capabilities
  • Los Alamos NIS-6 based tomographic analysis algorithms
  • MGA/MGAU U-Pu isotopics software
  • Fully integrated software
  • Full spectral acquisition and storage at each grab
  • Storage of all 32k spectral data from each grab (position correlated measurement)
  • Region of Interest based gamma-line analysis
  • Storage of all acquisition parameters
  • Full re-analysis capability
  • Ability to alter Regions of Interest,
  • Calibrations, and more for Post Acquisition Analysis
  • Automated emission and transmission image
    reconstruction
  • Interactive Graphics Package
  • PLC-based electromechanical control system
  • Many optional capabilities available including:
    • Automatic weighing system
    • Surface dose rate measurement
    • In-line automated conveyor system
Standard Segmented Gamma Scanner

Standard Segmented Gamma Scanner

Description

CANBERRA's Standard Segmented Gamma Scanner (SGS) is designed to perform accurate quantitative assays on gamma emitting nuclides found in fission products, activation products, and Transuranic (TRU) waste. With the optional ASTM algorithms it is also designed for use in safeguards applications. The system provides very accurate assays through the use of a collimated high purity germanium detector. The container is divided into a number of vertical segments and the activity is quantified in each vertical segment using matrix correction techniques based on attenuation corrections.

The system is designed to assay drums with volumes up to 200 L (55 gal) and weights up to 454 kg (1000 lb). The total system footprint is less than 4 m2 (<36 square-feet) with a maximum height of 213.4 cm (84 in.) including lightpost; 157.5 cm (62 in.) to the top of the frame. Forklift pockets provide for easy transport within a facility.

The system is designed to assay radionuclides such as 60Co or 137Cs with drum activities ranging from approximately 100 nCi up to approximately 20 mCi. For transuranic waste the system is optimized for assaying drums containing 0.1 grams 235U or 0.2 grams 239Pu up to 1000 grams. There is some flexibility in the detector size and collimation that can be used to modify the dynamic range of the system.

Applications

  • Nuclear Waste Assay
  • Decontamination and Decommissioning (D&D)
  • Nuclear safeguards
  • Research laboratories

Standard Segmented Gamma Scanner

Features

  • Quantitative gamma analysis for fission products or TRU (alpha) radionuclides
  • Segment by segment assay results
  • Compact design for reduced footprint
  • NDA-2000 software provides setup, calibration, and QA capabilities
  • Fully integrated PLC-based electromechanical control system
  • CE compliant
  • Optional automatic weighing system

Key Customer Benefits

  • Reduced integration and Installation time on-site
  • Ease of maintenance
  • Transportability within site
Auto Q2 Low Level Waste Assay System

Auto Q2 Low Level Waste Assay System

Description

The Auto Q2 (AQ2) is CANBERRA's second generation Automated Low Level Waste Assay System. Based on CANBERRA's successful IQ3 system, the system is designed to quantify plutonium and uranium in 200 L drums at levels below 10 nCi/g and at the same time perform plutonium isotopics measurements on drums containing less than 10 mg of plutonium.

At this level, low level waste drums can easily be segregated from TRU drums. For TRU drums the AQ2 system utilizes several techniques to provide accurate quantification of the fissile content of the drum. These include transmission correction to determine the drum matrix density, and lump detection using multi-energy assays.

For TRU waste, the AQ2 system utilizes the Multi-Group Analysis (MGA) software to determine the plutonium isotopics as well as the U/Pu ratio and the Pu/241Am ratio. MGAU provides uranium isotopics values for materials which do not contain plutonium. The MGA analysis allows the gamma system to quantify the otherwise difficult to assay isotopes of plutonium.

The system is designed to be operated as an automated counting system which can process batches of drums, or can be incorporated into a complete NDA process line.

The following sections describe the system hardware and software as well as the typical system performance.

Auto Q2 Low Level Waste Assay System

Features

  • Complete quantitative gamma analysis for fission/activation products or TRU(alpha) radionuclides
  • Multiple large coaxial or broad energy etectors for optimal performance
  • Non-Destructive Assay Software (NDA-2000) provides extensive setup analysis, calibration, and QA capabilities
  • 239Pu detection levels <1 mg
  • Container sizes up to 210 L (55 gal)
  • MGA/MGAU U/Pu isotopics software
  • 10 cm (4 in.) low background steel shield
  • PLC-based electromechanical control system
  • Many optional capabilities available including:
    • Automatic weighing system
    • Automatic attenuators
    • Automated conveyor system
    • Larger sample sizes (e.g., 400 liter drums)