Design and Implementation of Equipment for Enhanced Safeguards of a - PowerPoint PPT Presentation

Design and Implementation of Equipment for Enhanced Safeguards of a Plutonium Storage in a Reprocessing Plant “PuO 2 STORE PROJECT” www.jrc.ec.europa.eu The Unattended Combined Measurement System Serving society Stimulating innovation Supporting legislation European Commission Joint Research Centre Institute for Transuranium Elements Nuclear Security Unit – Ispra (It) P. RICHIR, Ph. BUCHET, L. DECHAMP, P. DRANSART, Z. DZBIKOWICZ, P. PEERANI patrice.richir@jrc.ec.europa.eu 1

2 Creatjng a win-win situatjon: EURATOM N, gamma counters balance •Double laser curtain to distinct entries/exits •Main store can be accessed only in presence of and to categorize them (forklift, trolley…) a DG ENER inspector •RFID tags and reader to identify duly •In the meantime, PuO 2 containers are authorized pieces of equipment introduced in channels between the main and •Camera to inspect “sensitive” equipment the temporary stores before leaving the store •Containers are retrieved in presence of the •Neutron portal monitors inspector Once the procedure and equipment validated:  Main store can be accessed any time by the Operator  DG ENER manpower requirements drastically reduced IAEA - Oct. 2014 -P. RICHIR

3 Double Laser Curtain: 2 LASER devices When an entry/exit event is completed, a profile and a video sequence are recorded Categorization: -Fork Lift Truck -FLT + charge block -Person -Person pushing a trolley -Stillage Courtesy of Sellafield Ltd. -“Others” Event detection  entry or exit  Analyse of normalized profile (parameters, neural network)  Categorization of event  Selection of events of interest for fast review IAEA - Oct. 2014 -P. RICHIR

4 Double Laser Curtain: profile examples “2D-profile” of a forklift truck Reconstructed image from Associated video record (FLT) and its charge block the profile “2D-profile” of a stillage Reconstructed image from Associated video record the profile IAEA - Oct. 2014 -P. RICHIR

5 Neutron portal monitors: Located over the door to access O/N store to detect entry/exit events involving PuO 2 : 2 x 3 He-3 tubes of 1 m Courtesy of Sellafield Ltd. IAEA - Oct. 2014 -P. RICHIR

6 RFID tags and reader: To automatically identify the authorized pieces of equipment When leaving the store, the “sensitive” equipment has to be presented in front of a camera and a neutron counter Courtesy of Sellafield Ltd. IAEA - Oct. 2014 -P. RICHIR

7 Unattended Combined Measurement System: Front and side cuts of the UCMS and its The UCMS and of the Operator PC – monitor used by instrumentation the production staff to start the measurement The instrumentation has been designed and characterized (HV, pre-delay, gate width…) at Ispra. For its calibration, DG ENER made use of 20 cans of 4 different batches on the basis of the operator declarations verified by the existing instrumentation or validated by the on-site laboratory measurements. IAEA - Oct. 2014 -P. RICHIR

8 Event, data and video reviewing: UCMS measurements: the By selecting an event spotted Inspector has the possibility to by the DLC, the Inspector has visualize the can ID and check the possibility to select it with the displayed picture, cameras, to perform direct the weight, the raw neutron video reviewing and to counting information and the visualize other relevant info: gamma spectrum via a link neutron count rates, tag IDs… IAEA - Oct. 2014 -P. RICHIR

9 Feedback: hardware Few hardware problems were encountered during the initial period: • Hard disk failures compromising the RAID system. Series effect: all the hard disks were from the same (non reliable) batch. The hard disks were all replaced  OK • The lower hinge of the UCMS door became stiff causing difficulties to open and to close the door. With the support of the Sellafield workshop, the hinge was dismantled to reposition the ball-bearings which were slightly displaced (transport?)  OK • Blockages of the UCMS balance auto calibration system causing the impossibility to use the whole functionalities of the device. The balance and its interface were replaced  OK The UCMS software was modified so that some non-crucial activities can be Courtesy of Sellafield Ltd. Courtesy of Sellafield Ltd . deactivated remotely from DG ENER Head Quarters to avoid the total blockage of the UCMS.

10 Feedback: measurement performances Neural network classification testing: out of 2208 entry/exit events, 98.5% were properly classified. None of the events requiring “more attention” was categorized as events requiring “less attention”. By now more than 70 cans from 8 different batches have been measured and the average difference with the Pu declared masses does not exceed 0.5%. IAEA - Oct. 2014 -P. RICHIR