report visit saphymo
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Report Visit SAPHYMO . Dorothea Pfeiffer. GIF++ Project Meeting 22.08.2012. SAPHYMO Company Information. Core business: Detection and monitoring of ionizing radiation for radioprotection purpose, environment process control and monitoring - PowerPoint PPT PresentationTRANSCRIPT
REPORT VISIT SAPHYMO
Dorothea PfeifferGIF++ Project Meeting22.08.2012
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SAPHYMO Company Information
Core business: Detection and monitoring of ionizing radiation for radioprotection purpose, environment process control and monitoring
Visit of site in Thiron-Gardais (A. Errahhaoui, R. Guida , S. La Mendola, D. Pfeiffer, Y. Pira)
Small building with two floors (bunker with irradiator on ground floor)
Around 40 employees are working there21.08.2012Dorothea
Pfeiffer
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Procurement of irradiator Irradiator ordered from
Leipzig/Germany based company GSM (Gamma Service Medical GmbH)
Sources of Russian origin acquired by GSM via Eckert & Ziegler Nuclitec GmbH
GSM also took old irradiator and sources back
Sources were delivered in Type B container on July 25th 2012
Installation and commissioning took 2 days (3 GSM technicians)
Several preparatory meetings, verification of dimensions of doors
21.08.2012Dorothea Pfeiffer
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Specification of irradiator and sources
Multi-source irradiator that can contain up to 8 sources
5 positions filled with 137 Cs sources of different activities
In garage position one of the sources can be selected (source wheel rotates)
Then the selected source is lifted into the irradiation position with the help of pressured air
Irradiator has three lead attenuators (factor 2, 10, 50) which are not used
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Irradiator, lead attenuators and console
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Console and connections
Dorothea Pfeiffer 21.08.2012
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Bunker, irradiation zone and safety
Bunker with 40 cm concrete walls Movable table for irradiation tests (small irradiation zone ca. 10 cm x 10 cm, no
lenses for field uniformity) Safety and monitoring devices: video surveillance, movement sensor, dose monitor,
acoustical and optical irradiation warning, door locking system Only two operators work with the sources Irradiation tests take only between seconds and minutes (just calibration, no ageing)
Dorothea Pfeiffer 21.08.2012
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Irradiation zone with isotropic source
Second irradiation zone for dosimeter tests
Flat vertical irradiator with 137 Cs source (115 GBq)
Round table to place dosimeters
Irradiator similar to the 60 Co horizontal irradiator R2E would like to order
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Fire Safety remarks (S. La Mendola)
29.06.2012Dorothea Pfeiffer
Fire Extinguishers in place EI 120 fire resistant door in both
bunkers Fire emergency procedure availableBUT Heating appliances in the
bunkers Electric cables not fire-rated Other combustible materials are
present in the bunker No smoke detection and general
alarm system, no ventilation, opening system of escape doors not compliant, etc.
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Resume from EN/PH perspective
Different type of irradiator: Only one collimation window, multiple sources, lead attenuators not used
Different irradiation scenario: Small radiation zone, only calibration, short duration of tests (cost effectiveness)
Safety and access system less restrictive Some important fire safety measures missing Old GIF facility better example for new GIF++ (R.
Guida will organize visit) For PH and EN less educational due to differences
than for RP sources service
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RP radioactive sources resume (A. Errahhaoui) Radioactive sealed sources according to ISO 2919 with
special form certificate Leak test performed on the radioactive source (200 Bq is the
maximum tolerated contamination per year ) The sources was shipped inside the irradiator, irradiator inside
a shipping Type B(u) Transport, stowage, handling of the irradiator was made by
GSM 40 cm of concrete shielding would be good enough for GIF++
source as well Sources of SAPHYMO: The incertitude of activity is 15 % but I
already contacted GSM to know if we can receive a source with incertitude less than 10 % (for M. Brugger) Recommended working life for these sources is 15 years.
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RP Operational resume (Y. Pira) No specific new ideas learned during the visit Similar safety measures used at CERN (monitoring, beam
imminent warning system, movement sensor) SAPHYMO facility is less restrictive than CERN GIF++ project
concerning these points:
21.08.2012Dorothea Pfeiffer
Specifications Saphymo irradiator GIF++ facilityControlled entrance and exit of each single person.
No (only 2 operators work with the sources)
Yes (with PAD)
Entrance granted only allowed after badging with a DIS dosimeter.
No (active and passive dosimeter mandatory but no barrier, no PAD, simple interlocked access door)
Yes
Patrol before operation with irradiator.
No (small bunker with simple geometry)
Yes
Access door equipped with a radiation veto lock.
No (simple key lock) Yes