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Le rayonnement de fond, surveillé partout, en permanence.

Un réseau national de surveillance de la radioactivité mesure le débit de dose gamma ambiant dans des stations à travers le pays, pour que l’autorité connaisse le bruit de fond normal et voie aussitôt toute hausse. Les stations doivent transmettre en continu, être étalonnées et inspirer confiance en situation d’urgence.

Industrie

Gouvernement

Mesures

4

Sources citées

4

1. Administration publique · Surveillance de la radioactivité dans l’environnement

   The background, and any rise

   A national radiation monitoring network measures the gamma dose rate across the country so the authority knows the normal background everywhere and sees a rise the moment it begins, whether from a facility at home or a release across a border. In an emergency, stations must keep reporting and be trusted.

2. Ce qui est mesuré

   Dose rate, rain and weather

   Dose-rate probes stand at the standard height over open ground. A rain gauge beside each probe records the rainfall that washes natural radon progeny to the ground, and weather sensors record wind for plume estimates. Selected stations sample air for laboratory analysis of nuclides.

   Instruments

   Gamma dose-rate probe · Rain gauge · Weather sensors · Air sampler

3. Le nœud de base

   Rain or release

   The station node compares each dose rate with the station’s own background and its rainfall. Rises that rain explains are labelled; unexplained rises shorten the reporting interval and alert the authority at once. Every value is signed, so the record is trusted in an emergency.

4. Radio et liaisons

   Reporting through the emergency

   Stations report every few minutes over public cellular. Stations near facilities also have a satellite path, so they keep reporting when terrestrial networks fail, and batteries for days of autonomy carry them through power cuts. Values reach the authority and the exchange in agreed formats.

   Liaisons

   Réseau mobile public · Satellite

5. Comment ça marche

   From a probe to the duty officer

   Dose rates rise at three stations downwind of a border facility with no rain recorded. The nodes shorten their intervals and flag the rise, the duty officer sees the pattern on the national map, neighbours see the same data through the exchange, and the emergency plan begins.

6. De la commande à l’exploitation · Commande

   Scope the network and its duties

   The scope reads the existing stations, the facilities at home and across borders, emergency planning zones, the authority’s duties to report and exchange, and its emergency plans. Nexus Observatory Inc. returns a station plan, the reporting and exchange design and a price per station and per year.

   Planifier un déploiement

7. De la commande à l’exploitation · Relevé

   Survey open ground

   Crews visit each candidate site for open, level ground away from buildings and trees, representative surroundings, power, backhaul and public access. Background is measured on site, and the survey is recorded with photographs and coordinates. Findings shape the kit for each site before anything is built.

8. De la commande à l’exploitation · Autorisations

   Land and public information

   Land agreements are signed with owners, mostly public bodies, and planning approval is sought where needed. The authority prepares public information about what the stations measure, because visible probes raise questions that published data can answer. No crew goes to site before its approvals are in place.

9. De la commande à l’exploitation · Fabrication

   Build and calibrate

   Probes are calibrated in a laboratory traceable to national standards before they ship; stations are assembled with rain gauges, weather sensors, nodes and backhaul, enrolled with their identities and run together for days before they leave the shop. Nothing ships until the whole kit has passed its tests together.

   Ouvrir le configurateur de stations

10. De la commande à l’exploitation · Installation

    Install at standard height

    Crews set the probe at the standard height over open ground, mount the rain gauge and weather sensors, install the cabinet, power and backhaul, and photograph every part. The station position and surroundings are recorded with the station. Crews follow the site safety plan throughout the work.

11. De la commande à l’exploitation · Mise en service

    Commission and learn the background

    Each node proves its identity, readings are checked with a travelling reference source and instrument, reports reach the authority and the exchange, and the station records weeks of background with rainfall before its alarm thresholds are set. Acceptance is recorded with the owner before handover.

12. De la commande à l’exploitation · Exploitation

    Watch the country continuously

    The authority sees every station’s dose rate, its background and rainfall, data completeness and alarms. Rises explained by rain are labelled, unexplained rises alert duty officers at once, and neighbours see the same data through the exchange. Every alert and action is kept on the record.

13. De la commande à l’exploitation · Maintenance

    Recalibrate and exercise

    Probes are recalibrated on the agreed plan, stations are checked on visits, software updates roll out in rings, and the network takes part in national and international emergency exercises. Every change and exercise is kept with the station record. Maintenance history stays with each site for its whole life.

    Réserver des services sur le terrain

14. Produits de données

    For the authority and the public

    The radiation protection authority receives a live national dose-rate map; duty officers and emergency services receive unexplained rise alerts; the public and media receive published hourly values with an explanation; neighbouring authorities and international platforms receive the exchanged data, each with station and time.

    Voir les produits de données

15. Preuves

    Trusted in an emergency

    Probes meet the international standard for environmental photon radiation equipment and are calibrated traceably. Monitoring follows the international safety guidance on environmental monitoring and on emergency preparedness, and data support the reporting duties of the Euratom Treaty. Every value, alarm and exercise is kept.

    Référentiels

    IEC 61017 · IAEA Safety Standards RS-G-1.8 · IAEA GSR Part 7 · Treaty establishing the European Atomic Energy Community, Articles 35 and 36

16. Ce que vous obtenez

    Surveillance de l’exposition environnementale pour les programmes de santé

    Mesures de l’exposition à la chaleur, à l’air et à l’eau autour des établissements et des collectivités; aucun diagnostic ni traitement. Fourni sous forme de service géré et licence de données, pour health authorities, hospital networks, employers. Scale: City to national. Service levels are written as numbers you can measure on your own dashboard.

    Parler aux ventes

17. Étape suivante

    Planifier avec nous : surveillance de la radioactivité dans l’environnement

    Tell us the site, the measurements and the rules it answers to. We reply with a survey proposal, a design and a scope for environmental radiation monitoring. An engineer replies with a survey proposal and a scope, and the plan grows from one site to the network you need, at your pace.

    Planifier un déploiementOuvrir le configurateur de stationsOuvrir le Studio

01Le lieu et ses dangers

Où il fonctionne, et ce qui peut mal tourner.

Operating contextRadiation protection authorities run early warning networks of dose-rate probes, often hundreds of stations, and share data with neighbours. Monitoring follows international safety guidance for environmental monitoring and emergency preparedness, instruments meet the standard for environmental photon radiation equipment, and in Europe member states report environmental radioactivity under the Euratom Treaty.

Dangers

• Releases from facilities at home or across borders
• Stations silent when they are needed in an emergency
• Natural changes from rain washing out radon progeny mistaken for releases
• Probes drifting out of calibration
• Public mistrust when data are not published

02Ce qu’il faut mesurer

Quoi, où, à quelle fréquence, et selon quelles règles.

Chaque mesure indique où elle est prise, à quelle fréquence, et la norme ou la réglementation publique qui la fonde. Les numéros de la colonne des sources ouvrent la source citée plus bas.

03La pile d’observation

D’un module de base à un réseau.

Les mêmes briques à chaque échelle : des instruments et un nœud de base, un site avec sa radio, une flotte exploitée comme un tout, et un réseau fédéré sur le protocole ouvert.

1. 01

   Unité de base

   A station: a dose-rate probe at standard height with a rain gauge and weather sensors on a sensor hub and node.

   Build a station →
2. 02

   Site

   A site: the probe on open ground away from buildings, the station cabinet, power with long backup and two backhaul links.

   Plan a site →
3. 03

   Parc

   The national network of stations with one console at the authority and one calibration plan.

   Managed offers →
4. 04

   Réseau

   Authorities exchange dose rates with neighbours and international platforms through agreed formats.

   The open protocol →

• 01Station météorologique automatique (classe OMM)
• 02Station météo compacte
• 03Passerelle de capteurs et d’instruments
• 04Micronœud (Nano)
• 05Modem/routeur cellulaire
• 06Terminal plat LEO
• 07Champ solaire
• 08Poteau

Radio et liaisons

Réseau mobile public

Stations report every few minutes over cellular in normal times.

Radio et liaisons

Satellite

A satellite path keeps stations near facilities reporting when terrestrial networks fail in an emergency.

Edge computeThe node compares each dose rate with the station’s own background and rainfall, flags rises that rain does not explain, shortens the reporting interval when a threshold is crossed and signs every value.

PowerMains with batteries for days of autonomy, so stations keep reporting through the power cuts that can accompany an emergency; remote stations run on solar.

04Comment ça marche

De l’instrument au produit.

Le parcours d’une observation, niveau par niveau, avec l’interface de chaque liaison et une nomenclature en dessous ; puis comment ce nœud devient un site, une flotte et des réseaux fédérés.

05De la commande à l’exploitation

Chaque étape, du premier appel à un site en service.

La même équipe et le même dossier portent le travail, du cadrage à la maintenance.

1. 01 Order

   Scope the network and its duties

   The scope reads the existing stations, the facilities at home and across borders, emergency planning zones, the authority’s duties to report and exchange, and its emergency plans. Nexus Observatory Inc. returns a station plan, the reporting and exchange design and a price per station and per year. 3

2. 02 Survey

   Survey open ground

   Crews visit each candidate site for open, level ground away from buildings and trees, representative surroundings, power, backhaul and public access. Background is measured on site, and the survey is recorded with photographs and coordinates. Findings shape the kit for each site before anything is built. 2

3. 03 Permits

   Land and public information

   Land agreements are signed with owners, mostly public bodies, and planning approval is sought where needed. The authority prepares public information about what the stations measure, because visible probes raise questions that published data can answer. No crew goes to site before its approvals are in place.

4. 04 Build

   Build and calibrate

   Probes are calibrated in a laboratory traceable to national standards before they ship; stations are assembled with rain gauges, weather sensors, nodes and backhaul, enrolled with their identities and run together for days before they leave the shop. Nothing ships until the whole kit has passed its tests together. 1

5. 05 Install

   Install at standard height

   Crews set the probe at the standard height over open ground, mount the rain gauge and weather sensors, install the cabinet, power and backhaul, and photograph every part. The station position and surroundings are recorded with the station. Crews follow the site safety plan throughout the work.

6. 06 Commission

   Commission and learn the background

   Each node proves its identity, readings are checked with a travelling reference source and instrument, reports reach the authority and the exchange, and the station records weeks of background with rainfall before its alarm thresholds are set. Acceptance is recorded with the owner before handover. 1

7. 07 Operate

   Watch the country continuously

   The authority sees every station’s dose rate, its background and rainfall, data completeness and alarms. Rises explained by rain are labelled, unexplained rises alert duty officers at once, and neighbours see the same data through the exchange. Every alert and action is kept on the record. 4

8. 08 Maintain

   Recalibrate and exercise

   Probes are recalibrated on the agreed plan, stations are checked on visits, software updates roll out in rings, and the network takes part in national and international emergency exercises. Every change and exercise is kept with the station record. Maintenance history stays with each site for its whole life. 3

06Produits de données et intégration

Ce qu’il fournit, à qui, et dans quels systèmes.

Produits de données

• Live national dose-rate mapRadiation protection authority
• Unexplained rise alertsDuty officers and emergency services
• Published hourly valuesThe public and media
• Data exchanged with neighboursNeighbouring authorities and international platforms

Intégration

• Authority systemsDose rates and alarms arrive in the authority’s own emergency systems.
• International exchangeValues are sent to regional and international platforms in the agreed formats.
• Public portalHourly values are published with an explanation of background and rain.

Exchanged through OGC SensorThings API, MQTT, IRIX.

07Questions des acheteurs

Avant de cadrer votre projet.

Can it tell rain from a release?

Rainfall at each station explains most natural rises, and those are labelled.

Will it work in an emergency?

Stations have days of battery and a satellite path near facilities.

Can our existing probes join?

Yes, through their own interfaces if they meet the environmental standard.

Is the data public?

Publishing follows the authority’s own policy; the network supports it.

08Ressources

Les sources de cette page.

Normes, réglementations et lignes directrices publiques, citées là où elles s’appliquent. Chacune ne s’applique que dans sa juridiction ou son champ.

1. 1IEC 61017: Radiation protection instrumentation, equipment to measure photon radiation for environmental monitoringInternational Electrotechnical Commission
2. 2IAEA Safety Standards RS-G-1.8: Environmental and Source Monitoring for Purposes of Radiation ProtectionInternational Atomic Energy Agency
3. 3IAEA GSR Part 7: Preparedness and Response for a Nuclear or Radiological EmergencyInternational Atomic Energy Agency · 2015
4. 4Treaty establishing the European Atomic Energy Community, Articles 35 and 36European Union

09Voir aussi

Cas d’usage et solutions.

10Administration publique : domaines spécialisés

Les autres domaines de cette industrie.

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