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EAN Workshop Use of Dosimeters for Industrial Radiography Operations

EAN Workshop Use of Dosimeters for Industrial Radiography Operations. OPERATIONAL DOSIMETRY MGP Instruments. D O S I S Y S. The French Regulation : Goals. Optimization (ALARA) Reduction at the lowest achievable level of individual and collective doses Data handling

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EAN Workshop Use of Dosimeters for Industrial Radiography Operations

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  1. EAN WorkshopUse of Dosimeters for Industrial Radiography Operations

  2. OPERATIONALDOSIMETRYMGP Instruments D O S I S Y S

  3. The French Regulation : Goals Optimization (ALARA) Reduction at the lowest achievable level of individual and collective doses Data handling The employer is responsible of recording and transmitting the personal doses to a central office OPRI

  4. The French Regulation : Means • " Real time " and "differed time” individual dosimeters • Individual and personal dosimeter • Real time information for cumulated dose and dose rate • Adjustable prealarm and alarm thresholds • Dose monitoring and recording by means of interconnected readers • Dosemanagement software used for the weekly transmission of data to the OPRI office

  5. DMC 2000 Dosimeter Display of Dose and Dose rate Alarms and pre-alarms for dose and dose rate detection : - Gamma - X - Beta Hp (10) and Hp(0,07) X and Gamma : 20 KeV to 6 MeV Beta : Average Energy > 60 KeV

  6. DMC 2000 • “Hand free " transmission with the reader • Operation in stand alone mode or with a system • 10 months Autonomy (in normal use) • Standard battery (CR2450) • storage of historical data (events and measurements)

  7. LDM 2000 Reader DOSIVIEW Dose acquisition Connection with Dose Manager Software DOSIVIEW

  8. LDM 2000 Reader The LDM 2000 can be set as : • Entrance reader :(DMC 2000 configuration) • Exit reader :(reading of dosimetry data) • Entrance and exit reader • Sub-area reader The LDM 2000 can memorize 1000 passages in case of network disconnection with the centralizer. The data will be transmitted to the centralizer once the network back to normal operation. Files are updated automatically.

  9. DOSISYS Architecture Ethernet TCP/IP Data Base DOSIVIEW RS 485 LDM 2000 LDM 2000 LDM 2000 LDM 2000 Entrance / Exit Readers

  10. DOSIVIEW software

  11. DOSIVIEW Software Management of : Individual DOSES and Collective DOSES by controlled area or sub area Cumulated Doses based on calendar year or sliding Periods Worker Data: ID, SS number, professional, medical, training qualification….

  12. DOSIVIEW Software Cumulated dose visualization and printing for each worker by : DAY WEEK MONTH THREE MONTHS YEAR 5 YEARS

  13. Wireless dosimetry The wireless system • Real time Transmission of dosimetry data • “Clamshell” design to contain DMC 2000S • 50 mW peak power • 3 user-selectable frequencies (904-924.5 MHz) • 4 user-selectable transmission times(4 sec, 10 sec, 30 sec, 60 sec) • AC Power Option • Standard AAA battery – 30 hour operation • Up to 1000 dosimeters monitored together • Applications : Personnel monitoring, Wireless area monitoring, Underwater diver or multi- dosimeter monitoring

  14. Special applications for industrial radiography • Use of audio beep by pulse (+/- 1 beep/10 nSv/hr) • Use of historical information to obtain a feedback of many operations. (information is not memorized if there is no dose rate or event) • Possibility to secure the Source Projector using the dosimeter’s alarms dry contacts.

  15. Conclusion • It’s now very easy to protect workers with very low cost dosimetry systems • It’s possible to improve Industrial Radiography in Radiation Protection with the same units and this in real time (Irradiator, Source Projector ...) • ALARA method can be simply applied and it’s possible to have a Good Feedback about how the doses are taken by means of the Historical Data.

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