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Security perimeterPérimètre de sécurité

Périmètre de sécuritéSecurity perimeter

APIDiscovered1/7blocked by verifiedQuery nowOpen workbenchSubscribe🇨🇭Switzerland

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…

51
fair

Weighted across five axes. Tap a ring for what it measures.

Data schema (15 fields)

Click a field to see example values.

FieldTypeDescription
OBJECTIDoidInternal record identifier.Internal record identifier.
PROPRIETAIREstringOwner of the installation or land, e.g. CERN.Owner of the installation or land, e.g. CERN.
DESCRIPTIONstringName of the CERN installation or facility concerned.Name of the CERN installation or facility concerned.
ETATstringStatus of the installation, such as existing or under study.Status of the installation, such as existing or under study.
OBJETstringPurpose or restriction defined for the security perimeter.Purpose or restriction defined for the security perimeter.
ALTI_MAX_SUPAlti max supdoubleUpper bound of the maximum altitude range, in metres.Upper bound of the maximum altitude range, in metres.
ALTI_MAX_INFAlti max infdoubleLower bound of the maximum altitude range, in metres.Lower bound of the maximum altitude range, in metres.
ALTI_MIN_SUPAlti min supdoubleUpper bound of the minimum altitude range, in metres.Upper bound of the minimum altitude range, in metres.
ALTI_MIN_INFAlti min infdoubleLower bound of the minimum altitude range, in metres.Lower bound of the minimum altitude range, in metres.
CONTACTstringEmail address for enquiries about this perimeter.Email address for enquiries about this perimeter.
LIENstringURL to further information about the restriction.URL to further information about the restriction.
REMARQUESstringAdditional remarks or notes about the perimeter.Additional remarks or notes about the perimeter.
DETERMINATION_PLANIMETRIQUEDetermination planimetriquestringMethod used to determine the planimetric boundaries.Method used to determine the planimetric boundaries.
Shape__AreadoubleArea of the geometry, in square metres.Area of the geometry, in square metres.
Shape__LengthSHAPE.LENdoublePerimeter 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.

Full API documentation ↗

Dataset

Volume & freshness

Datasets
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Machine-readable & source

Périmètre de sécurité — live verification badge

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