Why corridors fit an evidence system
Utility corridors usually have clearer zoning, entries and a reason to inspect again. Power, comms, water, heat or fire may share a gallery. Any product that lets one algorithm judge every trade overreaches. The correct object is segment + trade + evidence + reviewer.
Places such as Shenzhen pushing underground-utility data standards show that government sides care about exchangeable codes, space and 3D. A startup that invents a format nothing can ingest will watch the trial data die on a disk.
What a robot actually does in a gallery
People inspection is limited by permit, gas and fatigue. A robot fits pre-entry reconnaissance, night gap-filling, and sending suspect clips to a specialist screen. Collision tolerance matters at supports, trays and local obstacles. A long unobstructed run may not need flight.
PipeGuardian’s corridor target is: video, depth, gas and attitude bound to an asset code; weak links visible; the mission recoverable. It does not promise to replace a statutory inspection, and does not promise unevaluated cable sandwiches or Ex zones.
How to read this back to PipeGuardian
This article is industry education, not a pilot news item. If a vendor, university, funding scheme or standard appears, treat it as a contrast question: what must our own rig answer, and what must public copy forbid. Copying an external figure into a PipeGuardian spec sheet conflicts with the evidence page.
The English site carries the full method set: system architecture, safety bounds, target specifications, the 18-month roadmap and HK–SZ operations. Field work still starts with a permit and a recovery path. Reading an article is not a confined-space permit.