JORNADA SOBRE RADON. Luis Santiago Quindós Poncela Professor University of Cantabria. Radon Group, University of Cantabria
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1 JORNADA SOBRE RADON Luis Santiago Quindós Poncela Professor University of Cantabria Radon Group, University of Cantabria 11 th INTERNATIONAL WORKSHOP ON THE GEOLOGICAL ASPECTS OF RADON RISK MAPPING September 18th-20th, June 2012 Prague, Czech Republic MADRID, 7 DE NOVIIEMBRE DE 2012
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3 UNIVERSITY OF CANTABRIA Radon Group 35 YEARS DEALING WITH NATURAL RADIATION RADON MEASUREMENTS SOIL SAMPLES ANALYSIS EXTERNAL GAMMA RADIATION MEASUREMENTS
4 HEALTH RISKS Epidemiological Approach Dosimetric Approach Factor 1-3 RADON AND PROGENY WILL BE TREATED IN THE SAME WAY AS OTHER RADIONUCLIDE ICRP, Publication 115 (2010)
5 EPIDEMIOLOGICAL
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7 Risk assessment Dosimetric model Estimation of dose per unit exposure from respiratory tract model Progeny retention period Weighting factor for alpha particles Sensibility of pulmonary tissue Weighting factors for esch region Probability density function Applied to miner s conditions (Birchall 1994) 15 msv WLM -1 Applied to dwellings (Marsh 2002) 12 msv WLM -1
8 Ref: Reinniking-Porstendorfer, 1997.
9 DOSE FROM RADON 600 Bq/m msv/year T=7000 h F= 0.4 ICRP Bq/m3, ICRP msv/year
10 European Council Directive 96/29 EURATOM Reduction of dose limit: 50mSv/a --> 20 msv/a Members of the public --> 1 msv/a Monitoring of exposures from natural sources: Royal Decree178, 26 of JULY, 2001 Royal Decree 279, 18 of NOVEMBER, 2010 Royal Decree 22, 26 of JANUARY, 2012
11 Data Souce:CSN
12 Data Souce:CSN
13 University Autonoma of Barcelona University of Santiago de Compostela University of Cantabria
14 A first version of a European Geogenic Radon Map (EGRM) Valeria Gruber 1, Peter Bossew 2, Tore Tollefsen 1, Marc De Cort 1 1 European Commission DG JRC, Radioactivity Environmental Monitoring (REM), Institute for Transuranium Elements, Ispra, Italy 2 German Federal Office for Radiation Protection, Berlin, Germany
15 European Geogenic Radon Map (EGRM) Background defined only in a house Geogenic Rn map = independent of anthropogenic factors indoor Rn subject to human activity, temporally variable outdoor Rn building materials living habits meteo house construction variability at different time scales temporal variability e.g. through upgrading insulation defined everywhere on solid earth geogenic Rn what earth delivers, without influence of human interference, temporally constant over geologic timescale
16 PLAN NACIONAL DE RADON: EBSS Mapa de RADON 10x10
17 indoor radon data
18 First Trial EGRM Geo-types
19 15 lithological units a Souce:ESP IGME 1:1M GeologicUnits, Age, Lithology, Faults Projection: ED50/UTM 30N
20 First Trial EGRM Radon Classes geological
21 First Trial EGRM Radon Classes radiological
22 simplified legend a Souce:Europe BGR 5M Geological Units. OneGeology Portal Projection: WGS 84
23 study area 140x140 km.2 Database MADRID ÁVILA 140 KM TOLEDO 10x10 km Study area: grids 10x10 km2-485 data 140 KM
24 Geological Units: 1.Sandstones, conglomerates, clays, limestones and evaporites 2.Gravels, conglomerates, sands and silts 3.Two-mica granites 4.Quartzites, slates, sandstones and limestones 5.Dolomite, limestone and marl. Sandstones 6.Other granitoids 7.Gneisses 8.Conglomerates, sandstones, clays and limestones. evaporites 9.Slates, grauwackas, quartzites and conglomerates 10.Migmatites, marbles and undifferentiated granitoids
25 E C C A A B D B D Geological Units: A.Marl,conglomerate,limestone,gypsum B.Gneiss, mylonite C.granite group,granodiorite,tonalite D.Quartzite,shale/slate,greenschist,conglomerate E.Limestone,sandstone,marl,mud
26 72 Bq/m3
27 LABORATORY OF NATURAL RADIOACTIVITY (LRN)
28 LRRN Main building
29 one step further about quality International Intercomparison exercise under field conditions 42 LABORATORIES 17 COUNTRIES
30 LABORATORIO DE RADIACTIVIDAD NATURAL (LRN) Uranium mine Saelices el Chico Salamanca, Spain
31 Rn in soil External gamma exposure Rn in air (indoors, outdoors) Rn in water Radon exhalation (soil, building materials)
32 EUROPEAN ASSOCIATION OF RADON SCIENTISTS AND TECHNOLOGISTS (EARST)
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34 some goals.- To promote public awareness of radon measurement, radon mitigation and new construction radon reduction techniques..- To ensure quality standards are developed and adopted in radon measurement, radon mitigation and in construction of new radon reduction techniques..- To provide a community for education, sharing of ideas, resources and research..- To provide an effective partnership between radon professionals in the field and other interested public and private organizations..- To organize the annual Radon conference combining scientific presentations and technical exhibitions from companies working on radon gas. + YOUR PROPOSALS HERE!!
35 FUTURE GOALS COMPLETE THE NATIONAL INDOOR RADON MAPPING IN DWELLINGS PARTICIPATE IN THE EUROPEAN GEOGENIC RADON MAP WITH THE ANALYSIS OF THE SPANISH DATA AVAILABLE ENSURANCE THE QUALITY OF MEASUREMENTS BY PARTICIPATION/ORGANIZATION OF INTERCOMPARISON EXERCISES UNDER FIELD CONDITIONS AND CALIBRATION CHAMBERS MEASURING OCCUPATIONAL RADON EXPOSURE AT A NATIONWIDE SCALE ACCORDING TO THE SPANISH LAW Titulo VII BOE 178 DE 26 DE JULIO DE SPANISH SOIL RADON GAS MAPPING WILL BE START IN 2013
36 NEW BASIC SAFETY STANDARDS
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