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IG-SCAN 2000 CONTAINER INSPECTION SYSTEM Principle Diagram

1. Cobalt 60 γ ray source controller

2. Cobalt 60 γ ray source

3. Front collimator

4. Container

5. Truck carrying container

6. Trailer

7. Back collimator

8. Solid detectors

9. Automatic control system

10. Image process system (Inner Channel -2) Image-1 (Menu) Image-2 (Histogram) Image-3 (Data Extension) Image-4 (Comparison-Car) Image-5 (Gun-Absorptive Shading) Image-6 (Full Printing) Image-7 (Data Extension) Image-8 (Comparison-Bicycles)



Principle of Inspection System ØCobalt-60 source emits γ- ray (1.17MeV1.33MeV) Ø Fan shaped γ- ray generated by the shutter and front collimator ØHorizontal angle is 0.1° ØVertical angle is 65° Ø Y- ray penetrates the goods in a container a part of its energy is absorbed while others penetrates through the container Ø Electronic signals are generated afterγ- ray goes through the back collimator and enter the CdWO4 detectors Øγ- ray energy absorbed is related to the absorptivity (weight thickness) of the goods in a container materials with high density and atomic number have strong capability of absorption Ø A scan line can be displayed on the screen by collecting and processing the signals outputted by detectors Ø A two dimensional perspective image can be viewed with the scan lines displayed one by one while the moving container is scanned by the fan shaped γ- ray Image Generating and Processing Unit (IGPU) Technical Specifications Ø Image Quality Indicator: IQI=2.5%2.5mm iron wire behind100mm steel plate can be distinguished Ø Contrast Indicator: CI=0.7%0.7mm iron plate behind100mm steel plate can be distinguished Steel Penetration: SP=240mm Fe lead image behind 240mm steel plate can be seen distinguish Ø Scan speed: 6m/min12m/min18m/min (standard)24m/min Ø Dose per inspection: ≤0.01mGy dose taken in per inspection for an object is less than 0.01mGy Ø Throughput: 20 units 40ft containers / hour Ø Operating temperature: -20 ~ +50℃ Ø Relative humidity: max 95% Ø Radiation Safety: complies with IAEA(1996) standards Ø Object maximum size: 2.5m(W) × 4.6m(H) × 18m(L) Technical Parameters Øγ- ray source: cobalt-60300 curies energy 1.17/1.33MeV Ø Detector array: CdWO4L shaped set plugged electronic boards Ø Front collimator: 300mm(W) × 200mm(D) × 2000mm(H) Ø Back collimator: 300mm(W) × 200mm(D) × 6000mm(H) Ø Shield coefficient of collimator: 10³ Ø Image system: Image Sample WorkstationOperator WorkstationSupervisor WorkstationControl Server Image grey level: 65535 (16 bits A/D convert) Ø Image storage capability: 18GB × 4 (RAID 5) Ø Displayer: 21 pure flatcolor and B/W image modes Image process ØNavigatorØHorizontal and vertical moving and scrolling ØData extension Ø Section and full image zoom ØZoom lens with inserted valueØImage stripping ØHistogram equilibrium and dynamic statistic Ø Low and high pass filter ØPseudo color ØCAT with pause at any momentØAbsorptivity shading with pause at any moment ØCustom shortcut keysØComparison viewØBrightness and contrast changeØEdge enhancement with different parametersØImage and relative information storage and recheckØPrintetc. Trailer system Trailer: 18m(L) × 3m(W) × 0.8m(H) driven by two frequency conversion electro motors Forward: 6m/min12m/min18m/min24m/min Backward: 60m/min(auto)12m/min(manual) power consumption: 7.5kW × 2 Automatic control Ø main control computer (DELL or equivalent) Ø21” pure flat high resolution color displayer Ø programmable logic controller(PLC) OMRON product Ø advanced sensors monitors alarm annunciator closed-circuit television(CCTV) Ø Radiation dose meter safety control 4 channels γdose monitor alarm radiation personal dose meter safety interlocks voice visual and electro alarm Main Advantages of Inspection System uCombination of Cobalt source and solid detector ØIG-SCAN-2000 is the embodiment of both the advantages of Cobalt source and solid detector u Advantage of Cobalt-60 γ source Ø 1. Main characters: Ø Energy is invariable (1.17MeV1.33Mevaverage 1.25MeV) ØIntensity is quite steady ØWorking status of source does not need adjustment monitoring and maintenance γ- ray shutter is opened by electromagnetic power and shut automatically when power off Costs of running and maintenance is much lower Ø 2. Power support ØNo need of out power supply ØNo high-power electric device ØNo interference of high voltage and microwave Ø 3. Security protection ØLittle output of radiation ØUnified source with its shield vessel and shutter easy to be protected ØForbidden area is small that only 6 meters is required ØThe thickness of protection wall is only 0.4 m ØBuild site needed is also quite smaller and the costs of construction is lower Ø 4. Dose ØThe maximum detection dose is only 0.01mGy ØIt is so small just as one percent of an X-rays Ø 5. Price ØThanks to the low price the investment of an inspection station is quite lower. UAdvantages of solid detector Ø 1. Excellent performance ØHigh detecting efficiency (80% detecting rate for Co 60 γ- ray) ØHigh sensitivity image definition and resolution Ø 2. Firm material ØLowest failure rate ØNo higher voltage and air pressure ØHumidity-proofshake-proof Ø 3. Simplified techincs ØShort production cycle and easy to make a batch production ØShort delivery time needed (only 6 months) to meet urgent need of user Ø 4. Convenient maintenance ØMulti glittery crystal and relative circuit are assembled in one board ØConvenient and rapid maintenance only by pulling and plugging electronic boards Comparison to Competitor - Detector Comparison ØThe price/performance rate is excellent Ø Initial investment are extremely low Ø Occupied space of whole system is small Ø High working efficacy Ø Convenient maintenanceOnly normal mechanical and electronical maintenance needed Ø Economic Maintenance Charges during operation Ø Short production period6 months or less delivery time.

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