Accident Statistics 2010-2014 18. 9. 2014 TE-MSC Safety Day - Thomas Otto, TE-DSO 1.

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Presentation transcript:

Accident Statistics TE-MSC Safety Day - Thomas Otto, TE-DSO 1

Catégories d’accidents professionnels 8 accidents de trajet 140 jours de congé maladie 34 accidents de travail 39 jours de congé maladie TE-MSC Safety Day - Thomas Otto, TE-DSO 2

Evolution temporelle TE-MSC Safety Day - Thomas Otto, TE-DSO 3

Types d’accidents NoType 7Outillage à main ou poratatif 6Manipulation de charges 5Véhicules 4Chute de plein pied ou avec dénivellement 4Heurt au poste de travail 4Produits chimiques 2Particules ou masses projetés 1Machines outils 1En voulant récupérer un chaton tombé dans une fosse, s'est fait mordre 2 doigts 0Radiation TE-MSC Safety Day - Thomas Otto, TE-DSO 4

Radiation Hazard TE-MSC Safety Day - Thomas Otto, TE-DSO 5

Radiation Hazard Where does it come from ? How can I protect myself ? Time, distance, shileding Personal dosimeters What are the dose limits ? How to get a radioactive object from A to B ? TE-MSC Safety Day - Thomas Otto, TE-DSO 6

Where does radiation come from ? Operating particle Accelerators Accelerators in maintenance Radioactive sources Sources of X-rays TE-MSC Safety Day - Thomas Otto, TE-DSO 7

Operating Particle Accelerators Accelerated particle beam is misguided High-energy particles collide with matter Instantaneous generation of radiation cascade Very high dose rate – access forbidden TE-MSC Safety Day - Thomas Otto, TE-DSO 8

Accelerators in Maintenance Nuclear reactions have generated radioactive nuclei in matter Radioactive nuclei decay slowly (over weeks to years) under emission of radiation Low to moderate dose rates. Access and work possible under safety conditions TE-MSC Safety Day - Thomas Otto, TE-DSO 9

Dose limits The legal dose limit is 20 mSv in one year. A worker receiving 20 mSv every year of his career would have the same probability death from professional illness (cancer) than any worker in a “safe” industry (occupational accident or illness). At CERN, an action level is fixed at 6 mSv, from whereon strict optimisation measures are taken. Only half a dozen workers received more than 3 mSv during LS1, most workers have zero dose TE-MSC Safety Day - Thomas Otto, TE-DSO 10

External vs. Internal Radiation TE-MSC Safety Day - Thomas Otto, TE-DSO 11 Very frequent at CERN Protection by optimisation (time – distance – shielding) Not very frequent at CERN. Protection by specific clothing

How can I protect myself ? External radiation Reduce time in close to radioactive objects Increase distance object Place shielding between you and the object TE-MSC Safety Day - Thomas Otto, TE-DSO 12

Personal Dosimeters Personal Dosimeter (DIS)Operational Dosimeter TE-MSC Safety Day - Thomas Otto, TE-DSO 13

Transport of Radioactive Objects Assume that any object coming out of a radioactuive area is radioactive by itself Place it in the buffer zone TE-MSC Safety Day - Thomas Otto, TE-DSO 14

Request for Transport Use TREC to ask for measurement and transport ( RP will make a measurement TE-MSC Safety Day - Thomas Otto, TE-DSO 15

How to transport ? You will be informed of the result. If the object has been declared non-radioactive, you can transport it yourself If not, a transport request for radioactive goods will be generated for EN-HE TE-MSC Safety Day - Thomas Otto, TE-DSO 16