AsgardEHS Ontology
An OWL/Turtle ontology for environmental health & safety regulatory routing across federal frameworks (OSHA, EPA, DOT, NRC, MSHA, NFPA, ANSI).
A practitioner-built ontology for multi-agency EHS compliance routing.
The AsgardEHS Ontology models the three-axis routing problem
(HazardType × ActionContext × ContextualCondition) across the federal
EHS compliance landscape. Given a workplace situation, it surfaces which
regulatory frameworks fire — and why.
Get the ontology
The canonical resolvable IRI is https://w3id.org/asgardehs/ehs. Importing
that URL always returns the current release.
| Version | Type | Download |
|---|---|---|
| latest | live | ehs.ttl |
| 3.3.0 | frozen | snapshots/ehs-3.3.0.ttl |
| 3.2.0 | frozen | snapshots/ehs-3.2.0.ttl |
For citations in publications, prefer the version IRI
(e.g. https://w3id.org/asgardehs/ehs/3.3.0) over the moving ehs.ttl.
Cite
Bick, Adam J. The Compliance Routing Problem — A Practitioner-Built Ontology for Multi-Agency EHS Navigation. 2026. Submitted to EngrXiv.
The paper validates the routing model through nine worked scenarios spanning chemical spills, transport accidents, multi-hazard interactions, and NPDES/stormwater compliance.
License
CC BY-SA 4.0 — share and adapt with attribution; derivative work must use the same license.
Source & development
Source repository: github.com/asgardehs/ehs-ontology.
Issues, pull requests, and the CHANGELOG
live there. Releases follow semantic versioning; each release is published
both as a moving ehs.ttl pointer and as an immutable
snapshots/ehs-X.Y.Z.ttl file.