Accident Statistics 2010-2014

Accident Statistics 2010-2014
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Catégories d’accidents professionnels
•
8 accidents de trajet
•
34 accidents de
travail
•
140 jours de congé
maladie
•
39 jours de congé
maladie
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Evolution temporelle
14
12
10
8
Travail
Trajet
6
4
2
0
2010
2011
2012
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2013
2014
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Types d’accidents
No
Type
7
Outillage à main ou poratatif
6
Manipulation de charges
5
Véhicules
4
Chute de plein pied ou avec dénivellement
4
Heurt au poste de travail
4
Produits chimiques
2
Particules ou masses projetés
1
Machines outils
1
En voulant récupérer un chaton tombé dans une fosse ,
s'est fait mordre 2 doigts
0
Radiation
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4
Radiation Hazard
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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 ?
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Where does radiation come from ?
•
•
•
•
Operating particle Accelerators
Accelerators in maintenance
Radioactive sources
Sources of X-rays
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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
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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
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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
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External vs. Internal Radiation
Very frequent at CERN
Protection by
optimisation (time –
distance – shielding)
Not very frequent at
CERN. Protection by
specific clothing
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How can I protect myself ?
External radiation
•
Reduce time in
close to radioactive
objects
•
Increase distance
object
•
Place shielding
between you and
the object
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11
12
1
10
2
9
3
8
4
7
6
5
111
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Personal Dosimeters
Personal Dosimeter (DIS)
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Operational Dosimeter
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Transport of Radioactive Objects
•
•
Assume that any object coming out of a
radioactuive area is radioactive by itself
Place it in the buffer zone
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Request for Transport
•
Use TREC to ask for measurement and
transport (http:\\trec.cern.ch)
•
RP will make a measurement
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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.
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