Security perimeterPérimètre de sécurité
Périmètre de sécuritéSecurity perimeter
This geodata layer shows the protection perimeter around CERN facilities, including current installations (LHC and others) and the FCC project under study. It is intended primarily for project developers working underground, such as foundations, structures, or deep boreholes exceeding 10 metres in depth, helping them determine whether their works fall within zones requiring coordination with CERN. The dataset is published by the Système d'information du territoire genevois (Geneva territorial information system) and applies to the canton of Geneva, Switzerland.Cette géodonnée présente le périmètre de protection des installations du CERN actuelles (LHC et autres installations) et en étude (FCC). Ceci notamment vis-à-vis des porteurs de projets en souterrain (fondations, ouvrages ou forages profonds de profondeur supérieure à 10m). Les profondeurs indiquée…
Trust score
How is this computed?Weighted across five axes. Tap a ring for what it measures.
Data schema (15 fields)
Click a field to see example values.
| Field | Type | Description |
|---|---|---|
| OBJECTID | oid | Internal record identifier.Internal record identifier. |
| PROPRIETAIRE | string | Owner of the installation or land, e.g. CERN.Owner of the installation or land, e.g. CERN. |
| DESCRIPTION | string | Name of the CERN installation or facility concerned.Name of the CERN installation or facility concerned. |
| ETAT | string | Status of the installation, such as existing or under study.Status of the installation, such as existing or under study. |
| OBJET | string | Purpose or restriction defined for the security perimeter.Purpose or restriction defined for the security perimeter. |
| ALTI_MAX_SUPAlti max sup | double | Upper bound of the maximum altitude range, in metres.Upper bound of the maximum altitude range, in metres. |
| ALTI_MAX_INFAlti max inf | double | Lower bound of the maximum altitude range, in metres.Lower bound of the maximum altitude range, in metres. |
| ALTI_MIN_SUPAlti min sup | double | Upper bound of the minimum altitude range, in metres.Upper bound of the minimum altitude range, in metres. |
| ALTI_MIN_INFAlti min inf | double | Lower bound of the minimum altitude range, in metres.Lower bound of the minimum altitude range, in metres. |
| CONTACT | string | Email address for enquiries about this perimeter.Email address for enquiries about this perimeter. |
| LIEN | string | URL to further information about the restriction.URL to further information about the restriction. |
| REMARQUES | string | Additional remarks or notes about the perimeter.Additional remarks or notes about the perimeter. |
| DETERMINATION_PLANIMETRIQUEDetermination planimetrique | string | Method used to determine the planimetric boundaries.Method used to determine the planimetric boundaries. |
| Shape__Area | double | Area of the geometry, in square metres.Area of the geometry, in square metres. |
| Shape__LengthSHAPE.LEN | double | Perimeter length of the geometry, in metres.Perimeter length of the geometry, in metres. |
Schema captured from arcgis 1 month ago.
Query the data
Pick columns and a sort, then fetch a live preview straight from the source. Choose an API-filterable column (marked ▾) under “Where” to pick from its list of values.
Sample data (2 records)
Record 1ETAT: A l’étude · LIEN: —
{
"ETAT": "A l’étude",
"LIEN": null,
"OBJET": "Emprise d’étude indicative",
"CONTACT": "fcc-info@cern.ch",
"OBJECTID": 1,
"REMARQUES": null,
"DESCRIPTION": "FCC",
"Shape__Area": 18132815.012563,
"ALTI_MAX_INF": 340,
"ALTI_MAX_SUP": 450,
"ALTI_MIN_INF": 160,
"ALTI_MIN_SUP": 260,
"PROPRIETAIRE": "CERN",
"Shape__Length": 181328.389192131,
"DETERMINATION_PLANIMETRIQUE": null
}Record 2ETAT: Existant · LIEN: https://voisins.web.cern.ch/fr/mind-wher
{
"ETAT": "Existant",
"LIEN": "https://voisins.web.cern.ch/fr/mind-where-you-bore-0",
"OBJET": "Interdiction de forage superieur à 10m de profondeur",
"CONTACT": "sig.support@cern.ch",
"OBJECTID": 2,
"REMARQUES": null,
"DESCRIPTION": "LHC et autres tunnels",
"Shape__Area": 9893530.26481756,
"ALTI_MAX_INF": 380,
"ALTI_MAX_SUP": 420,
"ALTI_MIN_INF": 300,
"ALTI_MIN_SUP": 350,
"PROPRIETAIRE": "CERN",
"Shape__Length": 81162.199624748,
"DETERMINATION_PLANIMETRIQUE": null
}Live sample captured at profiling time — values may have changed upstream.
Verification Status
Using the API
Configuration
- Base URL
- https://vector.sitg.ge.ch/arcgis/rest/services/CERN_PERIMETRE_SECU_INFRA_SOUT/FeatureServer
License
Terms stated by the source (not a recognized license):
© 2026 SITG
Query examples
curl -s 'https://vector.sitg.ge.ch/arcgis/rest/services/CERN_PERIMETRE_SECU_INFRA_SOUT/FeatureServer?f=json' -H 'Accept: application/json'Service definition: the list of layers.
Dataset
Volume & freshness
Machine-readable & source
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