{"id":1259,"date":"2007-12-21T15:23:22","date_gmt":"2007-12-21T13:23:22","guid":{"rendered":"http:\/\/staging.sillon38.com\/2007\/12\/21\/peage-de-roussillon-atmosphere-atmosphere\/"},"modified":"2007-12-21T15:23:22","modified_gmt":"2007-12-21T13:23:22","slug":"peage-de-roussillon-atmosphere-atmosphere","status":"publish","type":"post","link":"https:\/\/www.sillon38.com\/blog\/2007\/12\/21\/peage-de-roussillon-atmosphere-atmosphere\/","title":{"rendered":"P\u00e9age-de-Roussillon: atmosph\u00e8re, atmosph\u00e8re…"},"content":{"rendered":"

H\u00e9l\u00e8ne Blanchard, vice-pr\u00e9sidente du Conseil r\u00e9gional Rh\u00f4ne-Alpes d\u00e9l\u00e9gu\u00e9e \u00e0 l\u2019environnement et \u00e0 la pr\u00e9vention des risques, \u00e9tait hier \u00e0 P\u00e9age-de-Roussillon pour inaugurer la balise de surveillance de la radioactivit\u00e9 atmopsh\u00e9rique, install\u00e9e par la CRIIRAD, en pr\u00e9sence d’\u00e9lus locaux et d’associations, parmi lesquelles AIRE.<\/p>\n

\"stalban.jpg\"<\/p>\n

C’est, en effet, sous l\u2019impulsion de l\u2019association AIRE (Association pour l\u2019Information Rhodanienne sur l\u2019Energie), que le laboratoire de la CRIIRAD (Commission de recherche et d’information ind\u00e9pendante sur la radioactivit\u00e9) a r\u00e9alis\u00e9 depuis plus de 14 ans un certain nombre d\u2019\u00e9tudes radio\u00e9cologiques dans l\u2019environnement du CNPE de Saint-Alban. Ces \u00e9tudes ont \u00e9t\u00e9 financ\u00e9es par les collectivit\u00e9s locales (municipalit\u00e9s, Conseil G\u00e9n\u00e9ral de l\u2019Is\u00e8re, Conseil R\u00e9gional Rh\u00f4ne-Alpes).
\nElles ont permis de d\u00e9montrer l\u2019impact du site chimique des Roches de Condrieu (uranium dans les s\u00e9diments du Rh\u00f4ne), la contamination des plantes aquatiques du Rh\u00f4ne par l\u2019iode 131 (probablement d\u2019origine hospitali\u00e8re), et r\u00e9cemment le marquage radiologique de l\u2019environnement \u00e0 proximit\u00e9 de la centrale de Saint-Alban par le tritium et le carbone 14 pr\u00e9sents dans les rejets atmosph\u00e9riques. Ces informations permettent aux populations, associations, et \u00e9lus locaux de disposer de donn\u00e9es fiables afin de conduire les exploitants \u00e0 r\u00e9duire l\u2019impact de leurs installations sur l\u2019environnement.
\nDans le prolongement de ces \u00e9tudes, la CRIIRAD a souhait\u00e9 installer et exploiter de fa\u00e7on p\u00e9renne une balise de contr\u00f4le en continu de la radioactivit\u00e9 de l\u2019air ambiant dans le secteur de Saint-Alban.<\/p>\n

Qu\u2019est-ce qu\u2019une balise de surveillance de la radioactivit\u00e9 atmosph\u00e9rique ? <\/strong>
\nIl s\u2019agit d\u2019une station fixe comprenant :
\n– un dispositif d\u2019aspiration de l\u2019air ext\u00e9rieur,
\n– un double dispositif de pi\u00e9geage des substances radioactives susceptibles d\u2019\u00eatre contenues dans l\u2019air aspir\u00e9 (filtre papier pour les a\u00e9rosols ; cartouche \u00e0 charbon actif pour les gaz),
\n– plusieurs d\u00e9tecteurs mesurant en continu la radioactivit\u00e9 des modules de pi\u00e9geage,
\n– un dispositif de transmission t\u00e9l\u00e9phonique des donn\u00e9es.<\/p><\/blockquote>\n

L\u2019installation de cette balise \u00e9tend le r\u00e9seau g\u00e9r\u00e9 par la CRIIRAD depuis le d\u00e9but des ann\u00e9es 90, mis en place gr\u00e2ce \u00e0 l\u2019implication des collectivit\u00e9s locales (Conseil g\u00e9n\u00e9ral de la Dr\u00f4me, mairies de Romans, Mont\u00e9limar, Avignon, …) qui, \u00e0 la suite de l\u2019accident de Tchernobyl survenu fin avril 1986, ont souhait\u00e9 se doter d\u2019un syst\u00e8me de contr\u00f4le d\u00e9centralis\u00e9, ind\u00e9pendant des services officiels. La balise du P\u00e9age-de-Roussillon constitue la premi\u00e9re \u00e9tape de cette extension. Lyon devrait \u00eatre la prochaine \u00e9tape. La ville de Grenoble poss\u00e8de d\u00e9j\u00e0 une balise similaire, g\u00e9r\u00e9e par l’ASCOPARG. Faute de moyens techniques suffisants, l’ASCOPARG a sollicit\u00e9 les services de la CRIIRAD afin d’approfondir les analyses. Ce partenariat technique est appel\u00e9 \u00e0 se renforcer.<\/p>\n

La balise install\u00e9e \u00e0 P\u00e9age-de-Roussillon a pour mission :<\/strong>
\n– d\u2019assurer 24 heures sur 24 un contr\u00f4le en continu de la radioactivit\u00e9 de l\u2019air respir\u00e9 par les populations : la balise est install\u00e9e \u00e0 moins de 5 kilom\u00e8tres au sud-est de la centrale nucl\u00e9aire de Saint-Alban, au centre de l\u2019agglom\u00e9ration Roussillon\/Le P\u00e9age-de-Roussillon ;
\n– d\u2019informer rapidement les populations en cas de contamination gr\u00e2ce \u00e0 un syst\u00e8me de gestion informatique alertant automatiquement le service permanent d\u2019astreinte assur\u00e9 par le laboratoire de la CRIIRAD.<\/p><\/blockquote>\n

Pourquoi analyser la radioactivit\u00e9 de l\u2019air ?
\nEn cas d’accident survenant dans une installation nucl\u00e9aire, le risque principal est le rejet de substances radioactives dans l’atmosph\u00e8re. Principal vecteur de la contamination, l’air constitue, durant la premi\u00e8re phase de l’accident, le param\u00e8tre cl\u00e9 pour l’\u00e9valuation des risques.<\/p>\n

sites: balises@criirad.org, atmo-rhonalpes.org <\/em><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

H\u00e9l\u00e8ne Blanchard, vice-pr\u00e9sidente du Conseil r\u00e9gional Rh\u00f4ne-Alpes d\u00e9l\u00e9gu\u00e9e \u00e0 l\u2019environnement et \u00e0 la pr\u00e9vention des risques, \u00e9tait hier \u00e0 P\u00e9age-de-Roussillon pour inaugurer la balise de surveillance de la radioactivit\u00e9 atmopsh\u00e9rique, install\u00e9e par la CRIIRAD, en pr\u00e9sence d’\u00e9lus locaux et d’associations,…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,60],"tags":[324,2863,4419],"class_list":["post-1259","post","type-post","status-publish","format-standard","hentry","category-environnement","category-pollution","tag-aire","tag-helene-blanchard","tag-pollution-atmospherique"],"yoast_head":"\nP\u00e9age-de-Roussillon: atmosph\u00e8re, atmosph\u00e8re... -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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