International Radiation Protection Association 11 th International Congress Madrid, Spain - May 23-28, 2004

Transcription

1 International Radiation Protection Association 11 th International Congress Madrid, Spain - May 23-28, 2004 Protecting against Natural Radiation Exposure

2 Natural Radiation: The Basic Questions How much natural is there? Can it be detrimental to health? Should we protect people against nature? If so, how should we do it? Can (and should) we be coherent vis-à-vis protection against artificial? 20 September,

3 Incoherence, inconsistency Is natural the tritium in the water we drink? cosmic-ray genesis? cold-war legacy? NPP discharge? radio pharmaceutical? 20 September,

4 Incoherence, inconsistency Is natural the radium in bricks? it was in the mud? ashes from coal? mine-tailing? 20 September,

5 Incoherence, inconsistency Are the tailings from a tunnel excavation natural? and are those from uranium mining artificial? Should they be regulated differently? 20 September,

6 Incoherence, inconsistency Occupational exposure? No occupational exposure? 20 September,

7 The alma matter Renate CZARWINSKI 20 September,

8 20 September,

9 The Panelists Norman GENTNER, UNSCEAR Anselmo PASCHOA, Brazil Andrzej WOJCIK, Poland David OWEN, ILO František SPURNÝ, Czech Republic Hans-Henning LANDFERMANN, Germany Kaare ULBAK, Denmark 20 September,

10 20 September,

11 I will try to be a democratic moderator 20 September,

12 20 September,

13 International Radiation Protection Association 11 th International Congress Madrid, Spain - May 23-28, 2004 Occupational Protection of Workers against Natural Radiation Exposure 20 September,

14 Is this mason an occupationally exposed worker? 20 September,

15 Is this pilot an occupationally exposed worker? and this trainer? 20 September,

16 The Exposure of Workers Occupational exposure: ALL exposure of workers incurred in the course of their work. Most of the exposure is amenable to control and must be controlled by the employer.? A fraction could be unamenable to control (e.g. e.g. cosmic rays) and may be excluded. 20 September,

17 In international standards there is not distinction among workers! There are distinct working conditions! 20 September,

18 The Current Standards for Occupational Protection 20 September,

19 Occupational Dose Restrictions msv in a year Maximum (except life saving) Every effort not to exceed it All reasonable efforts not t to exceed it Annual dose limit Average dose limit Optimization of Protection 20 September, R E S C U E N O R M A L

20 What to do if the occupational natural exposure that is controllable by the employer is higher than 20 msv/year? 20 September,

21 Responsibilities Employers Government Licensee Workers 20 September,

22 The female worker: protecting the unborn and the infant 20 September,

23 Exposure conditions 20 September,

24 D AIR CREW Normal background D δd/δt t δd/δt t t t δ 2 D/δt 2 δ 2 D/δt 2 t t 20 September,

25 Enhanced background D Normal background D δd/δt t δd/δt t t t δ 2 D/δt 2 δ 2 D/δt 2 t t 20 September,

26 Causation 20 September,

27 Dose (msv( msv) Epidemiological detectability 10 2 Collective dose x 5%/Sv = number of occupational deaths! 10 1 dose 10-0 Collective dose workers People 20 September,

28 Dose (msv ( msv) Do the effects in this region actually occur? People 20 September, Epistemological Epistemological Limitation Limitation No No grounds grounds of of knowledge!! knowledge!! CAUSATION Epidemiological detectability

29 International action plan 20 September,