Cartogam Real-Time Portable Gamma-Ray Imaging System

Transcription

1 Features Complete tool for in situ cartography, saving time, cost and dose Real-time acquisition and immediate display Two dimensional gamma mapping and dose range Dose rate estimation of hot spots Excellent spatial resolution for localization of gamma-ray emitters Perfect superimposition of gamma and visible images No scanning but a whole image in one shot No parallax Discrimination between ambient background and hot spot is less than 30 minutes High detection sensitivity better than 300 ngy/h (30 µrad/h) in less than 30 minutes to 10 Gy/h (1000 Rad/h) Designed for hot cell applications High level of portability Compact detection head Detection head easily protected against contamination and easily cleaned Use for long distance with less penalizing doses for workers (ALARA) Can be used in inaccessible contaminated areas Remote control and operation User-friendly software Emergency response tool Cartogam Real-Time Portable Gamma-Ray Imaging System Description Cartogam is a real-time portable gamma-ray imaging system that creates images of two different wavelengths of photons (visible and gamma) and superimposes them. This allows the user to locate gamma radiation arriving at the sensor. The Cartogam has been in production since 2000, and is used routinely in nuclear facilities all over the world, including nuclear power plants, research centers, fuel reprocessing plants, homeland security and D&D sites. Cartogam integrates the latest enhancements in opto-electronics which makes it the smallest and lightest gamma camera available, with identical visible and gamma optics with no parallax. The sealed-unit is designed for use in contaminated areas. Combined with GammaView, allows intuitive, very user-friendly software allow any non-expert operator to set up the instrument, then acquire and process the images within a few minutes. Cartogam, is mainly designed for in situ gamma measurements to locate radioactivity at nuclear sites. When planning for maintenance or decommissioning operations, it can be used to provide radiation intensity maps of areas during normal operations, to evaluate radiological hot spot locations and to quickly locate positions of contaminated areas during incidents, accidents, emergency situations, or reactor outages. Cartogam also supplies input for quantitative gamma spectroscopy measurements of radioactive waste or in situ radioactivity. Its remote operation capability allows for a significant reduction of human exposure complying with stringent ALARA principles. Cartogam consists of a small detection head connected with a special cable to a Cartogam Box that contains acquisition boards. The Box is connected via a giga ethernet cable to a regular PC. The detection head has been specifically designed to take into account the harshest environmental constraints of operations within hot areas of nuclear sites. The Cartogam head is splash-proof and can be easily decontaminated, making it practical for use in contaminated areas. Cartogam is the perfect tool for real-time mapping of gamma emitting hot spots it allows fast localization of radio nuclides within contaminated areas. Acquisition, image analysis and data storage are managed through GammaView software. CANBERRA IS THE NUCLEAR MEASUREMENTS BUSINESS UNIT OF AREVA. We are Measurement solutions for nuclear safety and security. C /11 Printed in U.S.A.

2 The detection head can be remotely adjusted via a Pan and Tilt or specific remote manipulator devices. The Cartogam Box to detection head distance can be up to 200 m (655 ft). The Cartogam operation is very simple with GammaView software. Control of acquisition, analysis of scenes and data storage are particularly user-friendly and use a Windows XP Look and Feel man-machine interface. In situ radiological inventory prior to decontamination with Cartogam detection head mounted on Pan and Tilt and tripod After selection of the acquisition mode (low or high counting rate) as well as the area to be mapped, the operator starts the automatic sequence of acquisitions. At the end of the exposure time, Cartogam generates a composite image of the gamma mapping, superimposed on the visible image. The gamma image intensity is automatically adjusted to full scale. The hot spots may also be evaluated in dose rate according to a user-defined nuclide or energy. The acquired raw data (composed of visible and gamma images, and other various parameters) are stored to ensure data integrity. Enhanced storage functions are available. Cartogam Typical Applications Monitoring of maintenance and decontamination activities Initial dose rate mapping in preparation for maintenance or dismantling scenarios Suitable for pipeline measurements Source localization prior to decontamination Planning for maintenance during outages of nuclear power reactors Printed images that show workers radioactive area locations with estimated dose rate Inspection of radio-chemical process (tanks, drums, pipelines ) Radiological inventory prior to dismantling Maintenance and localization of hot spots in reprocessing plants Industries with difficult nuclear conditions (high dose rates, hot cells, unreachable areas) Emergency situations such as: spills, transportation accidents, fires, large-scale radiation incidents, etc. Better and faster results with high activities (Total Cost of Ownership: financial gain, operational gain because of faster acquisitions which is not the case for the scanning systems) Reduced exposure with improved job planning (according to the ALARA principle) Provides a very good and easy-to-interpret record of where the radioactivity is located, and therefore how to model it more accurately with ISOCS Can be coupled with MERCURAD, dosecalculation software. MERCURAD users can greatly benefit from Cartogam output showing where the radioactivity is located, as well for the ISOCS output identifying and quantifying the hot spots Remote survey of radiological conditions Evaluation and dimensioning of protective shielding Cost-effective sorting of nuclear waste Major potential customers for Cartogam are: Health physics managers Radiological engineering Shielding designer Emergency planning Safety departments Post accident/homeland security

3 Real time imaging with Cartogam (Allows defining a scenario without cutting a pipe) A hot spot detected while controlling the piping A vibrating system was installed where the stopper was positioned Following the motion of the hot spot in real time Follow up the maintenance efficiency and real time knowledge when the pipe was unblocked Cartogam in association with ISOCS and Mercurad for easy localization and activity measurements of hot spots

4 Specifications CARTOGAM HEAD: FEATURES ENERGY RANGE 50 kev to 1.5 MeV and higher. ACQUISITION MODES: High Count rate mode. Low Count rate mode (allows real-time signal processing for improved spatial resolution). DISPLAY MODES: Counts vs. position. Dose rate according to user-defined nuclide or energy. DETECTOR TYPE CsI(Tl) or BGO upon request for high dose rates. DETECTOR SENSITIVITY* Can detect in 30 minutes a point source of 137 Cs that generates a dose rate of 300 ngy/h (30 μr/h) at the detector head, when used in low count rate mode. EXPOSURE TIME From 40 ms to 30 min. FIELD OF VIEW Typically 43 x 33 (H x V) for a collimator of 50. SPATIAL RESOLUTION* Collimator 662 kev 1332 kev * Performance values are for a standard unit at 25 C (77 F) and for Csl(Tl). PHYSICAL OPERATING TEMPERATURE +5 C to +40 C (41 F to 104 F). STORAGE TEMPERATURE -20 C to 45 C (-4 F to 113 F). INTERNAL RELATIVE HUMIDITY 0 to 80%. WEIGHT 17.7 kg (39 lb). LENGTH 414 mm (16.3 in.). DIAMETER 80 mm (3.2 in.). DETECTION HEAD TO CARTOGAM BOX CABLE 30 m (98 ft) long (supplied with Cartogam), additional cables up to 200 m (655 ft) (see options). CARTOGAM BOX: PHYSICAL OPERATING TEMPERATURE 0 C to 45 C (32 F to 113 F). STORAGE TEMPERATURE -20 C to 60 C (-4 F to 140 F). RELATIVE HUMIDITY 0 to 90%. WEIGHT 2.5 kg (5.5 lb). LENGTH 284 mm (11.2 in.). WIDTH 169 mm (6.65 in.). HEIGHT 90 mm (3.55 in.). POWER SUPPLY V, Hz. COMPUTER DATA RECORDING: Gamma image, video image, and composite. Gamma/video images may be stored on disk, printed or transferred via a network. STANDARD SOFTWARE GammaView 5.0. PROCESSING UNIT Portable PC: Operating System: Windows XP SP3. Screen resolution: 1280X800. GB network interface (RealTek or Intel). JUMBO FRAMES Network Board: more than 9kBytes. POWER SUPPLY V, Hz. ORDERING INFORMATION EM71267 Cartogam 50 (English Version). EM68845 Cartogam 50 (French Version). Including: Real-time portable Gamma-ray imaging system. 30 m (98 ft) cable. Cartogam Box with 10 m (32 ft) Giga Ethernet cable. Standard laptop with Giga Ethernet board. GammaView software. Dedicated transport case.

5 OPTIONS AND ACCESSORIES Additional Cable Between Detection Head and Cartogam Box: EM m (16 ft). EM m (32 ft). EM m (65 ft). EM m (98 ft) (delivered with CARTOGAM in standard). EM m (131 ft). EM m (164 ft). EM m (328 ft). EM m (492 ft). EM m (655 ft). EM48052: Tabletop tilt-stand to support Cartogam. EM73418: Spare kit for Cartogam including a 4 mm scintillator, (Csl or BGO), two entrance windows and optical grease. EM51594: Heavy duty tripod. EM83687: Pan and Tilt mechanism. Additional Cable Between Pan and Tilt and Remote Control Unit: EM m (16 ft). EM m (32 ft). EM m (65 ft). EM m (98 ft). EM m (131 ft). EM m (164 ft). EM m (328 ft). EM m (492 ft). EM m (655 ft). Remote Control Unit for Pan and Tilt: EM83689 French Version. EM89600 UK Version. EM89601 US Version. Pan and Tilt EM49090: Annular tungsten shield for protection against lateral sources (25 kg /55 lb). Tripod EM91703: Light-weight carrying case for Pan and Tilt and tripod. Remote Control ISOCS is a trademark of Canberra Industries, Inc. Mercurad is a registered trademark of Canberra Eurisys Corporation France. Windows is a registered trademark of Microsoft Corporation in the United States and/or other countries Canberra Industries, Inc. All rights reserved.