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            <gco:CharacterString>Maître d'ouvrage :
IPSN 1984-2002
IRSN 2002-présent

Maître d'œuvre :
IPSN 1984-2002
IRSN 2002-présent

Financeur(s) :
IRSN</gco:CharacterString>
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                  <gco:CharacterString>La surveillance radiologique de l’environnement est une mission confiée à l’IRSN dans son décret de création
n°222-254 du 2 février 2002.
Cette mission, déclinée au milieu marin, est assurée par une quinzaine de stations auxquelles s’ajoutent
quelques stations d’observations. Au total près de 800 prélèvements sont réalisés pour partie avec l’appui
d’EDF, d’AREVA, de la Marine Nationale et la DGAL.
Les données de surveillance de l’IRSN sont destinées à être exploitées et diffusées (Bilan radiologique et sites
internet notamment, Commission européenne, convention OSPAR).

Nombre de points d'observation ou de mesure : Méditerranée : 9 sites ; Manche Atlantique : 14
Le plan de surveillance radiologique du milieu marin par l’IRSN est évolutif et présente par conséquent des différences d’une année sur l’autre en termes de fréquences, d’analyses et de prélèvements réalisés
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                        <gco:CharacterString>Type de données : 
Méditerranée : mollusques (moule), poissons (rouget, sole)
Mer du Nord, Manche, Atlantique : eau de
mer, algues brunes (fucus), mollusques
(moule, patelle, huitre, Saint-Jacques),
sédiments côtiers

Précision sur le type de donnée : 
Mesures de radioactivité sur résidu sec
ou sur cendres
Mesures de radioactivité exprimées en Bq.l
dans les matrices liquides et en Bq.kg-1 sec
ou Bq.kg-1 frais dans les matrices solides

Paramètre(s) observé(s) ou mesuré(s) :
Radionucléides mesurés par
spectrométrie gamma : 137Cs, 60Co,
106Ru, 40K, 7Be, 234Th
Spectrométrie alpha : 210Po, U, Pu,
Emetteur bêta : 90 Sr
Radionucléides mesurés par spectrométrie
gamma (137Cs, 60Co, 106Ru, 40K, 7Be, 234Th)
Radionucléides nécessitant une radiochimie
et un comptage par spectrométrie alpha
(Am, Pu…)
Emetteurs Beta nécessitant des séparations
: 3H, 14C, 90Sr
Résolution du (ou des) paramètre(s) : 
Au plus bas des meilleures techniques métrologiques
Résolution adaptée aux objectifs de mesure
des niveaux de référence et de l'impact des
installations nucléaires
Fréquence d'actualisation :
Annuelle
Fréquence d'observation :
Méditerranée : bimestrielle
Mensuelle à annuelle selon les lieux et les
matrices</gco:CharacterString>
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Spatial</gco:CharacterString>
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RINBIO, Mediterranean Mussel Watch, Réseau National de Mesure de la radioactivité dans l’environnement</gco:CharacterString>
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