Underground, the air is the first thing to fail.
Confined spaces, gas risk, water finding its way in — underground assets live with conditions that change faster than any inspection round. SapienOS watches them continuously, so the first indication of a problem isn't a person opening the door.

Between checks, nobody's watching
Gas builds on its own schedule
In sewer, service and utility tunnels, methane accumulates whether or not anyone is due to check. A handheld sweep tells you about the moment of the sweep — not the hours a space stood closed.
Water arrives as damage, not data
Ingress through linings and joints announces itself as staining, ponding and damaged plant — evidence of a problem months after it started. By the time it's visible, the cheap fix has already passed.
Unattended rooms underground
Plant rooms, sumps and switch rooms below ground run for weeks without a visit. When conditions drift — heat, damp, gas — the first alert is too often the failure itself.
Gas first — it's where the platform comes from
Continuous methane detection
SapienOS is built on industrial methane sensing heritage. Continuous methane detection in the spaces that need it most, with alerting that backs up your gas-safety and confined-space procedures — it never replaces them.
Conditions in the spaces you don't visit
Temperature, humidity and pressure in plant rooms and service corridors, measured continuously — so persistent damp, rising heat and drifting conditions show up as trends, not surprises.
A record that stands up
Authenticated readings — per-device keys, signed at the gateway — building a continuous record of every monitored space, ready for closeouts, audits and incident reviews.
Structural monitoring
Structural monitoring of linings and movement is in development — on the roadmap, not available today. The platform watching your air now is built to grow into it.
In developmentEyes on every space, all the time

The underground estate in one view
Every monitored space in one browser dashboard — gas and environment side by side, with what's normal, what's drifting, and what tripped an alert.
Alerts with the readings attached
When methane trends up or a space drifts from its normal, the alert carries the location, the readings and the advisory context — informing your procedures, never substituting for them.
Evidence for closeouts and audits
A continuous, authenticated record of what each space was doing and when — the file you open when the auditor, the insurer or the incident review asks.
Start with the space that worries you
Pilot partnerships are open for tunnel operators, utilities and contractors — continuous gas and environment monitoring in a real space, with a record you can point to.